From 96192ff1a9d0c6ef365d21667080259d83ea2f5b Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@suse.de>
Date: Mon, 20 Jun 2005 21:15:16 -0700
Subject: [PATCH] devfs: Remove the miscdevice devfs_name field as it's no
 longer needed

Also fixes all drivers that set this field.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/i386/kernel/microcode.c | 1 -
 1 file changed, 1 deletion(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/microcode.c b/arch/i386/kernel/microcode.c
index 0a865889b2a..40b44cc0d14 100644
--- a/arch/i386/kernel/microcode.c
+++ b/arch/i386/kernel/microcode.c
@@ -493,7 +493,6 @@ static struct file_operations microcode_fops = {
 static struct miscdevice microcode_dev = {
 	.minor		= MICROCODE_MINOR,
 	.name		= "microcode",
-	.devfs_name	= "cpu/microcode",
 	.fops		= &microcode_fops,
 };
 
-- 
cgit v1.2.3-70-g09d2


From 685143ac1f7a579a3fac9c7f2ac8f82e95af6864 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@suse.de>
Date: Mon, 12 Jun 2006 15:18:31 -0700
Subject: [PATCH] 64bit resource: fix up printks for resources in arch and core
 code

This is needed if we wish to change the size of the resource structures.

Based on an original patch from Vivek Goyal <vgoyal@in.ibm.com> and
Andrew Morton.

(tweaked by Andy Isaacson <adi@hexapodia.org>)

Cc: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Andy Isaacson <adi@hexapodia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/i386/kernel/efi.c                |  6 +++--
 arch/powerpc/kernel/pci_32.c          | 37 +++++++++++++++---------------
 arch/powerpc/platforms/83xx/pci.c     |  5 +++--
 arch/powerpc/platforms/85xx/pci.c     |  5 +++--
 arch/powerpc/platforms/chrp/pci.c     |  4 ++--
 arch/powerpc/platforms/maple/pci.c    |  5 +++--
 arch/powerpc/platforms/powermac/pci.c |  5 +++--
 arch/ppc/kernel/pci.c                 | 42 +++++++++++++++++++++--------------
 arch/sparc/kernel/ioport.c            |  4 +++-
 kernel/resource.c                     | 10 +++++----
 10 files changed, 71 insertions(+), 52 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/efi.c b/arch/i386/kernel/efi.c
index 9202b67c4b2..8beb0f07d99 100644
--- a/arch/i386/kernel/efi.c
+++ b/arch/i386/kernel/efi.c
@@ -601,8 +601,10 @@ efi_initialize_iomem_resources(struct resource *code_resource,
 		res->end = res->start + ((md->num_pages << EFI_PAGE_SHIFT) - 1);
 		res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
 		if (request_resource(&iomem_resource, res) < 0)
-			printk(KERN_ERR PFX "Failed to allocate res %s : 0x%lx-0x%lx\n",
-				res->name, res->start, res->end);
+			printk(KERN_ERR PFX "Failed to allocate res %s : "
+				"0x%llx-0x%llx\n", res->name,
+				(unsigned long long)res->start,
+				(unsigned long long)res->end);
 		/*
 		 * We don't know which region contains kernel data so we try
 		 * it repeatedly and let the resource manager test it.
diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index b5431ccf114..d9e2506db5f 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -99,7 +99,7 @@ pcibios_fixup_resources(struct pci_dev *dev)
 		if (!res->flags)
 			continue;
 		if (res->end == 0xffffffff) {
-			DBG("PCI:%s Resource %d [%08lx-%08lx] is unassigned\n",
+			DBG("PCI:%s Resource %d [%016llx-%016llx] is unassigned\n",
 			    pci_name(dev), i, res->start, res->end);
 			res->end -= res->start;
 			res->start = 0;
@@ -117,7 +117,7 @@ pcibios_fixup_resources(struct pci_dev *dev)
 			res->start += offset;
 			res->end += offset;
 #ifdef DEBUG
-			printk("Fixup res %d (%lx) of dev %s: %lx -> %lx\n",
+			printk("Fixup res %d (%lx) of dev %s: %llx -> %llx\n",
 			       i, res->flags, pci_name(dev),
 			       res->start - offset, res->start);
 #endif
@@ -183,7 +183,7 @@ void pcibios_align_resource(void *data, struct resource *res, unsigned long size
 
 		if (size > 0x100) {
 			printk(KERN_ERR "PCI: I/O Region %s/%d too large"
-			       " (%ld bytes)\n", pci_name(dev),
+			       " (%lld bytes)\n", pci_name(dev),
 			       dev->resource - res, size);
 		}
 
@@ -255,8 +255,8 @@ pcibios_allocate_bus_resources(struct list_head *bus_list)
 				}
 			}
 
-			DBG("PCI: bridge rsrc %lx..%lx (%lx), parent %p\n",
-			    res->start, res->end, res->flags, pr);
+			DBG("PCI: bridge rsrc %llx..%llx (%lx), parent %p\n",
+				res->start, res->end, res->flags, pr);
 			if (pr) {
 				if (request_resource(pr, res) == 0)
 					continue;
@@ -306,7 +306,7 @@ reparent_resources(struct resource *parent, struct resource *res)
 	*pp = NULL;
 	for (p = res->child; p != NULL; p = p->sibling) {
 		p->parent = res;
-		DBG(KERN_INFO "PCI: reparented %s [%lx..%lx] under %s\n",
+		DBG(KERN_INFO "PCI: reparented %s [%llx..%llx] under %s\n",
 		    p->name, p->start, p->end, res->name);
 	}
 	return 0;
@@ -362,13 +362,14 @@ pci_relocate_bridge_resource(struct pci_bus *bus, int i)
 		try = conflict->start - 1;
 	}
 	if (request_resource(pr, res)) {
-		DBG(KERN_ERR "PCI: huh? couldn't move to %lx..%lx\n",
+		DBG(KERN_ERR "PCI: huh? couldn't move to %llx..%llx\n",
 		    res->start, res->end);
 		return -1;		/* "can't happen" */
 	}
 	update_bridge_base(bus, i);
-	printk(KERN_INFO "PCI: bridge %d resource %d moved to %lx..%lx\n",
-	       bus->number, i, res->start, res->end);
+	printk(KERN_INFO "PCI: bridge %d resource %d moved to %llx..%llx\n",
+	       bus->number, i, (unsigned long long)res->start,
+	       (unsigned long long)res->end);
 	return 0;
 }
 
@@ -479,14 +480,14 @@ static inline void alloc_resource(struct pci_dev *dev, int idx)
 {
 	struct resource *pr, *r = &dev->resource[idx];
 
-	DBG("PCI:%s: Resource %d: %08lx-%08lx (f=%lx)\n",
+	DBG("PCI:%s: Resource %d: %016llx-%016llx (f=%lx)\n",
 	    pci_name(dev), idx, r->start, r->end, r->flags);
 	pr = pci_find_parent_resource(dev, r);
 	if (!pr || request_resource(pr, r) < 0) {
 		printk(KERN_ERR "PCI: Cannot allocate resource region %d"
 		       " of device %s\n", idx, pci_name(dev));
 		if (pr)
-			DBG("PCI:  parent is %p: %08lx-%08lx (f=%lx)\n",
+			DBG("PCI:  parent is %p: %016llx-%016llx (f=%lx)\n",
 			    pr, pr->start, pr->end, pr->flags);
 		/* We'll assign a new address later */
 		r->flags |= IORESOURCE_UNSET;
@@ -956,7 +957,7 @@ pci_process_bridge_OF_ranges(struct pci_controller *hose,
 			res = &hose->io_resource;
 			res->flags = IORESOURCE_IO;
 			res->start = ranges[2];
-			DBG("PCI: IO 0x%lx -> 0x%lx\n",
+			DBG("PCI: IO 0x%llx -> 0x%llx\n",
 				    res->start, res->start + size - 1);
 			break;
 		case 2:		/* memory space */
@@ -978,7 +979,7 @@ pci_process_bridge_OF_ranges(struct pci_controller *hose,
 				if(ranges[0] & 0x40000000)
 					res->flags |= IORESOURCE_PREFETCH;
 				res->start = ranges[na+2];
-				DBG("PCI: MEM[%d] 0x%lx -> 0x%lx\n", memno,
+				DBG("PCI: MEM[%d] 0x%llx -> 0x%llx\n", memno,
 					    res->start, res->start + size - 1);
 			}
 			break;
@@ -1074,7 +1075,7 @@ do_update_p2p_io_resource(struct pci_bus *bus, int enable_vga)
 	DBG("Remapping Bus %d, bridge: %s\n", bus->number, pci_name(bridge));
 	res.start -= ((unsigned long) hose->io_base_virt - isa_io_base);
 	res.end -= ((unsigned long) hose->io_base_virt - isa_io_base);
-	DBG("  IO window: %08lx-%08lx\n", res.start, res.end);
+	DBG("  IO window: %016llx-%016llx\n", res.start, res.end);
 
 	/* Set up the top and bottom of the PCI I/O segment for this bus. */
 	pci_read_config_dword(bridge, PCI_IO_BASE, &l);
@@ -1223,8 +1224,8 @@ do_fixup_p2p_level(struct pci_bus *bus)
 					continue;
 				if ((r->flags & IORESOURCE_IO) == 0)
 					continue;
-				DBG("Trying to allocate from %08lx, size %08lx from parent"
-				    " res %d: %08lx -> %08lx\n",
+				DBG("Trying to allocate from %016llx, size %016llx from parent"
+				    " res %d: %016llx -> %016llx\n",
 					res->start, res->end, i, r->start, r->end);
 			
 				if (allocate_resource(r, res, res->end + 1, res->start, max,
@@ -1574,8 +1575,8 @@ static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp,
 	else
 		prot |= _PAGE_GUARDED;
 
-	printk("PCI map for %s:%lx, prot: %lx\n", pci_name(dev), rp->start,
-	       prot);
+	printk("PCI map for %s:%llx, prot: %lx\n", pci_name(dev),
+		(unsigned long long)rp->start, prot);
 
 	return __pgprot(prot);
 }
diff --git a/arch/powerpc/platforms/83xx/pci.c b/arch/powerpc/platforms/83xx/pci.c
index 16f7d3b30e1..3baceb00fef 100644
--- a/arch/powerpc/platforms/83xx/pci.c
+++ b/arch/powerpc/platforms/83xx/pci.c
@@ -91,9 +91,10 @@ int __init add_bridge(struct device_node *dev)
 		mpc83xx_pci2_busno = hose->first_busno;
 	}
 
-	printk(KERN_INFO "Found MPC83xx PCI host bridge at 0x%08lx. "
+	printk(KERN_INFO "Found MPC83xx PCI host bridge at 0x%016llx. "
 	       "Firmware bus number: %d->%d\n",
-	       rsrc.start, hose->first_busno, hose->last_busno);
+	       (unsigned long long)rsrc.start, hose->first_busno,
+	       hose->last_busno);
 
 	DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
 	    hose, hose->cfg_addr, hose->cfg_data);
diff --git a/arch/powerpc/platforms/85xx/pci.c b/arch/powerpc/platforms/85xx/pci.c
index bad290110ed..48c8849c07c 100644
--- a/arch/powerpc/platforms/85xx/pci.c
+++ b/arch/powerpc/platforms/85xx/pci.c
@@ -79,9 +79,10 @@ int __init add_bridge(struct device_node *dev)
 		mpc85xx_pci2_busno = hose->first_busno;
 	}
 
-	printk(KERN_INFO "Found MPC85xx PCI host bridge at 0x%08lx. "
+	printk(KERN_INFO "Found MPC85xx PCI host bridge at 0x%016llx. "
 	       "Firmware bus number: %d->%d\n",
-		rsrc.start, hose->first_busno, hose->last_busno);
+		(unsigned long long)rsrc.start, hose->first_busno,
+		hose->last_busno);
 
 	DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
 		hose, hose->cfg_addr, hose->cfg_data);
diff --git a/arch/powerpc/platforms/chrp/pci.c b/arch/powerpc/platforms/chrp/pci.c
index ac224876ce5..53515daf01b 100644
--- a/arch/powerpc/platforms/chrp/pci.c
+++ b/arch/powerpc/platforms/chrp/pci.c
@@ -143,7 +143,7 @@ hydra_init(void)
 	if (np == NULL || of_address_to_resource(np, 0, &r))
 		return 0;
 	Hydra = ioremap(r.start, r.end-r.start);
-	printk("Hydra Mac I/O at %lx\n", r.start);
+	printk("Hydra Mac I/O at %llx\n", (unsigned long long)r.start);
 	printk("Hydra Feature_Control was %x",
 	       in_le32(&Hydra->Feature_Control));
 	out_le32(&Hydra->Feature_Control, (HYDRA_FC_SCC_CELL_EN |
@@ -267,7 +267,7 @@ chrp_find_bridges(void)
 			       bus_range[0], bus_range[1]);
 		printk(" controlled by %s", dev->type);
 		if (!is_longtrail)
-			printk(" at %lx", r.start);
+			printk(" at %llx", (unsigned long long)r.start);
 		printk("\n");
 
 		hose = pcibios_alloc_controller();
diff --git a/arch/powerpc/platforms/maple/pci.c b/arch/powerpc/platforms/maple/pci.c
index 9a4efc0c3b2..f7170ff86da 100644
--- a/arch/powerpc/platforms/maple/pci.c
+++ b/arch/powerpc/platforms/maple/pci.c
@@ -376,9 +376,10 @@ static void __init maple_fixup_phb_resources(void)
 		unsigned long offset = (unsigned long)hose->io_base_virt - pci_io_base;
 		hose->io_resource.start += offset;
 		hose->io_resource.end += offset;
-		printk(KERN_INFO "PCI Host %d, io start: %lx; io end: %lx\n",
+		printk(KERN_INFO "PCI Host %d, io start: %llx; io end: %llx\n",
 		       hose->global_number,
-		       hose->io_resource.start, hose->io_resource.end);
+		       (unsigned long long)hose->io_resource.start,
+		       (unsigned long long)hose->io_resource.end);
 	}
 }
 
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index 80035853467..d524a915aa8 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -939,9 +939,10 @@ static int __init add_bridge(struct device_node *dev)
 		disp_name = "Chaos";
 		primary = 0;
 	}
-	printk(KERN_INFO "Found %s PCI host bridge at 0x%08lx. "
+	printk(KERN_INFO "Found %s PCI host bridge at 0x%016llx. "
 	       "Firmware bus number: %d->%d\n",
-		disp_name, rsrc.start, hose->first_busno, hose->last_busno);
+		disp_name, (unsigned long long)rsrc.start, hose->first_busno,
+		hose->last_busno);
 #endif /* CONFIG_PPC32 */
 
 	DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
diff --git a/arch/ppc/kernel/pci.c b/arch/ppc/kernel/pci.c
index d20accf9650..8544e100d71 100644
--- a/arch/ppc/kernel/pci.c
+++ b/arch/ppc/kernel/pci.c
@@ -95,8 +95,10 @@ pcibios_fixup_resources(struct pci_dev *dev)
 		if (!res->flags)
 			continue;
 		if (res->end == 0xffffffff) {
-			DBG("PCI:%s Resource %d [%08lx-%08lx] is unassigned\n",
-			    pci_name(dev), i, res->start, res->end);
+			DBG("PCI:%s Resource %d [%016llx-%016llx] is unassigned\n",
+				pci_name(dev), i,
+				(unsigned long long)res->start,
+				(unsigned long long)res->end);
 			res->end -= res->start;
 			res->start = 0;
 			res->flags |= IORESOURCE_UNSET;
@@ -179,8 +181,8 @@ void pcibios_align_resource(void *data, struct resource *res, unsigned long size
 
 		if (size > 0x100) {
 			printk(KERN_ERR "PCI: I/O Region %s/%d too large"
-			       " (%ld bytes)\n", pci_name(dev),
-			       dev->resource - res, size);
+			       " (%lld bytes)\n", pci_name(dev),
+			       dev->resource - res, (unsigned long long)size);
 		}
 
 		if (start & 0x300) {
@@ -251,8 +253,9 @@ pcibios_allocate_bus_resources(struct list_head *bus_list)
 				}
 			}
 
-			DBG("PCI: bridge rsrc %lx..%lx (%lx), parent %p\n",
-			    res->start, res->end, res->flags, pr);
+			DBG("PCI: bridge rsrc %llx..%llx (%lx), parent %p\n",
+				(unsigned long long)res->start,
+				(unsigned long long)res->end, res->flags, pr);
 			if (pr) {
 				if (request_resource(pr, res) == 0)
 					continue;
@@ -302,8 +305,9 @@ reparent_resources(struct resource *parent, struct resource *res)
 	*pp = NULL;
 	for (p = res->child; p != NULL; p = p->sibling) {
 		p->parent = res;
-		DBG(KERN_INFO "PCI: reparented %s [%lx..%lx] under %s\n",
-		    p->name, p->start, p->end, res->name);
+		DBG(KERN_INFO "PCI: reparented %s [%llx..%llx] under %s\n",
+			p->name, (unsigned long long)p->start,
+			(unsigned long long)p->end, res->name);
 	}
 	return 0;
 }
@@ -358,13 +362,15 @@ pci_relocate_bridge_resource(struct pci_bus *bus, int i)
 		try = conflict->start - 1;
 	}
 	if (request_resource(pr, res)) {
-		DBG(KERN_ERR "PCI: huh? couldn't move to %lx..%lx\n",
-		    res->start, res->end);
+		DBG(KERN_ERR "PCI: huh? couldn't move to %llx..%llx\n",
+			(unsigned long long)res->start,
+			(unsigned long long)res->end);
 		return -1;		/* "can't happen" */
 	}
 	update_bridge_base(bus, i);
-	printk(KERN_INFO "PCI: bridge %d resource %d moved to %lx..%lx\n",
-	       bus->number, i, res->start, res->end);
+	printk(KERN_INFO "PCI: bridge %d resource %d moved to %llx..%llx\n",
+		bus->number, i, (unsigned long long)res->start,
+		(unsigned long long)res->end);
 	return 0;
 }
 
@@ -475,15 +481,17 @@ static inline void alloc_resource(struct pci_dev *dev, int idx)
 {
 	struct resource *pr, *r = &dev->resource[idx];
 
-	DBG("PCI:%s: Resource %d: %08lx-%08lx (f=%lx)\n",
-	    pci_name(dev), idx, r->start, r->end, r->flags);
+	DBG("PCI:%s: Resource %d: %016llx-%016llx (f=%lx)\n",
+	    pci_name(dev), idx, (unsigned long long)r->start,
+	    (unsigned long long)r->end, r->flags);
 	pr = pci_find_parent_resource(dev, r);
 	if (!pr || request_resource(pr, r) < 0) {
 		printk(KERN_ERR "PCI: Cannot allocate resource region %d"
 		       " of device %s\n", idx, pci_name(dev));
 		if (pr)
-			DBG("PCI:  parent is %p: %08lx-%08lx (f=%lx)\n",
-			    pr, pr->start, pr->end, pr->flags);
+			DBG("PCI:  parent is %p: %016llx-%016llx (f=%lx)\n",
+				pr, (unsigned long long)pr->start,
+				(unsigned long long)pr->end, pr->flags);
 		/* We'll assign a new address later */
 		r->flags |= IORESOURCE_UNSET;
 		r->end -= r->start;
@@ -952,7 +960,7 @@ static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp,
 	else
 		prot |= _PAGE_GUARDED;
 
-	printk("PCI map for %s:%lx, prot: %lx\n", pci_name(dev), rp->start,
+	printk("PCI map for %s:%llx, prot: %llx\n", pci_name(dev), rp->start,
 	       prot);
 
 	return __pgprot(prot);
diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index ae4c667c906..99d716b9507 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -819,7 +819,9 @@ _sparc_io_get_info(char *buf, char **start, off_t fpos, int length, int *eof,
 		if (p + 32 >= e)	/* Better than nothing */
 			break;
 		if ((nm = r->name) == 0) nm = "???";
-		p += sprintf(p, "%08lx-%08lx: %s\n", r->start, r->end, nm);
+		p += sprintf(p, "%016llx-%016llx: %s\n",
+				(unsigned long long)r->start,
+				(unsigned long long)r->end, nm);
 	}
 
 	return p-buf;
diff --git a/kernel/resource.c b/kernel/resource.c
index e3080fcc66a..ea5f7811a40 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -83,10 +83,10 @@ static int r_show(struct seq_file *m, void *v)
 	for (depth = 0, p = r; depth < MAX_IORES_LEVEL; depth++, p = p->parent)
 		if (p->parent == root)
 			break;
-	seq_printf(m, "%*s%0*lx-%0*lx : %s\n",
+	seq_printf(m, "%*s%0*llx-%0*llx : %s\n",
 			depth * 2, "",
-			width, r->start,
-			width, r->end,
+			width, (unsigned long long) r->start,
+			width, (unsigned long long) r->end,
 			r->name ? r->name : "<BAD>");
 	return 0;
 }
@@ -511,7 +511,9 @@ void __release_region(struct resource *parent, unsigned long start, unsigned lon
 
 	write_unlock(&resource_lock);
 
-	printk(KERN_WARNING "Trying to free nonexistent resource <%08lx-%08lx>\n", start, end);
+	printk(KERN_WARNING "Trying to free nonexistent resource "
+		"<%016llx-%016llx>\n", (unsigned long long)start,
+		(unsigned long long)end);
 }
 
 EXPORT_SYMBOL(__release_region);
-- 
cgit v1.2.3-70-g09d2


From e31dd6e4520439ceae4753f32dd2da2c345e929a Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@suse.de>
Date: Mon, 12 Jun 2006 17:06:02 -0700
Subject: [PATCH] 64bit resource: change pci core and arch code to use
 resource_size_t

Based on a patch series originally from Vivek Goyal <vgoyal@in.ibm.com>

Cc: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/alpha/kernel/pci.c               |  4 ++--
 arch/arm/kernel/bios32.c              |  6 +++---
 arch/cris/arch-v32/drivers/pci/bios.c |  4 ++--
 arch/frv/mb93090-mb00/pci-frv.c       |  4 ++--
 arch/i386/pci/i386.c                  |  4 ++--
 arch/ia64/pci/pci.c                   |  2 +-
 arch/m68knommu/kernel/comempci.c      |  3 ++-
 arch/mips/pci/pci.c                   |  4 ++--
 arch/mips/pmc-sierra/yosemite/ht.c    |  4 ++--
 arch/parisc/kernel/pci.c              |  2 +-
 arch/powerpc/kernel/pci_32.c          | 10 +++++-----
 arch/powerpc/kernel/pci_64.c          |  4 ++--
 arch/ppc/kernel/pci.c                 | 12 ++++++------
 arch/sh/boards/mpc1211/pci.c          |  4 ++--
 arch/sh/boards/overdrive/galileo.c    |  2 +-
 arch/sh/drivers/pci/pci.c             |  6 +++---
 arch/sh64/kernel/pcibios.c            |  4 ++--
 arch/sparc/kernel/pcic.c              |  2 +-
 arch/sparc64/kernel/pci.c             |  2 +-
 arch/v850/kernel/rte_mb_a_pci.c       |  2 +-
 arch/xtensa/kernel/pci.c              |  6 +++---
 drivers/pci/bus.c                     | 10 +++++-----
 drivers/pci/pci-sysfs.c               |  4 ++--
 drivers/pci/pci.h                     |  6 +++---
 drivers/pci/proc.c                    |  4 ++--
 drivers/pci/rom.c                     | 10 +++++-----
 drivers/pci/setup-res.c               |  6 +++---
 include/asm-arm/mach/pci.h            |  2 +-
 include/asm-powerpc/pci.h             |  2 +-
 include/asm-ppc/pci.h                 |  2 +-
 include/linux/pci.h                   | 13 +++++++------
 31 files changed, 76 insertions(+), 74 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 2a8b364c822..4ea6711e55a 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -124,12 +124,12 @@ DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, pcibios_fixup_final);
 
 void
 pcibios_align_resource(void *data, struct resource *res,
-		       unsigned long size, unsigned long align)
+		       resource_size_t size, resource_size_t align)
 {
 	struct pci_dev *dev = data;
 	struct pci_controller *hose = dev->sysdata;
 	unsigned long alignto;
-	unsigned long start = res->start;
+	resource_size_t start = res->start;
 
 	if (res->flags & IORESOURCE_IO) {
 		/* Make sure we start at our min on all hoses */
diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c
index 302fc140154..45da06fc1ba 100644
--- a/arch/arm/kernel/bios32.c
+++ b/arch/arm/kernel/bios32.c
@@ -304,7 +304,7 @@ static inline int pdev_bad_for_parity(struct pci_dev *dev)
 static void __devinit
 pdev_fixup_device_resources(struct pci_sys_data *root, struct pci_dev *dev)
 {
-	unsigned long offset;
+	resource_size_t offset;
 	int i;
 
 	for (i = 0; i < PCI_NUM_RESOURCES; i++) {
@@ -634,9 +634,9 @@ char * __init pcibios_setup(char *str)
  * which might be mirrored at 0x0100-0x03ff..
  */
 void pcibios_align_resource(void *data, struct resource *res,
-			    unsigned long size, unsigned long align)
+			    resource_size_t size, resource_size_t align)
 {
-	unsigned long start = res->start;
+	resource_size_t start = res->start;
 
 	if (res->flags & IORESOURCE_IO && start & 0x300)
 		start = (start + 0x3ff) & ~0x3ff;
diff --git a/arch/cris/arch-v32/drivers/pci/bios.c b/arch/cris/arch-v32/drivers/pci/bios.c
index 1e9d062103a..a2b9c60c277 100644
--- a/arch/cris/arch-v32/drivers/pci/bios.c
+++ b/arch/cris/arch-v32/drivers/pci/bios.c
@@ -43,10 +43,10 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 
 void
 pcibios_align_resource(void *data, struct resource *res,
-		       unsigned long size, unsigned long align)
+		       resource_size_t size, resource_size_t align)
 {
 	if (res->flags & IORESOURCE_IO) {
-		unsigned long start = res->start;
+		resource_size_t start = res->start;
 
 		if (start & 0x300) {
 			start = (start + 0x3ff) & ~0x3ff;
diff --git a/arch/frv/mb93090-mb00/pci-frv.c b/arch/frv/mb93090-mb00/pci-frv.c
index 0a26bf6f1cd..4f165c93be4 100644
--- a/arch/frv/mb93090-mb00/pci-frv.c
+++ b/arch/frv/mb93090-mb00/pci-frv.c
@@ -64,10 +64,10 @@ pcibios_update_resource(struct pci_dev *dev, struct resource *root,
  */
 void
 pcibios_align_resource(void *data, struct resource *res,
-		       unsigned long size, unsigned long align)
+		       resource_size_t size, resource_size_t align)
 {
 	if (res->flags & IORESOURCE_IO) {
-		unsigned long start = res->start;
+		resource_size_t start = res->start;
 
 		if (start & 0x300) {
 			start = (start + 0x3ff) & ~0x3ff;
diff --git a/arch/i386/pci/i386.c b/arch/i386/pci/i386.c
index a151f7a99f5..10154a2cac6 100644
--- a/arch/i386/pci/i386.c
+++ b/arch/i386/pci/i386.c
@@ -48,10 +48,10 @@
  */
 void
 pcibios_align_resource(void *data, struct resource *res,
-		       unsigned long size, unsigned long align)
+			resource_size_t size, resource_size_t align)
 {
 	if (res->flags & IORESOURCE_IO) {
-		unsigned long start = res->start;
+		resource_size_t start = res->start;
 
 		if (start & 0x300) {
 			start = (start + 0x3ff) & ~0x3ff;
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 77375a55da3..5bef0e3603f 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -568,7 +568,7 @@ pcibios_disable_device (struct pci_dev *dev)
 
 void
 pcibios_align_resource (void *data, struct resource *res,
-		        unsigned long size, unsigned long align)
+		        resource_size_t size, resource_size_t align)
 {
 }
 
diff --git a/arch/m68knommu/kernel/comempci.c b/arch/m68knommu/kernel/comempci.c
index 8670938f110..db7a0c1ceba 100644
--- a/arch/m68knommu/kernel/comempci.c
+++ b/arch/m68knommu/kernel/comempci.c
@@ -357,7 +357,8 @@ void pcibios_fixup_bus(struct pci_bus *b)
 
 /*****************************************************************************/
 
-void pcibios_align_resource(void *data, struct resource *res, unsigned long size, unsigned long align)
+void pcibios_align_resource(void *data, struct resource *res,
+				resource_size_t size, resource_size_t align)
 {
 }
 
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index 4dfce154d4a..ba66f8c9bd4 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -51,11 +51,11 @@ unsigned long PCIBIOS_MIN_MEM	= 0;
  */
 void
 pcibios_align_resource(void *data, struct resource *res,
-		       unsigned long size, unsigned long align)
+		       resource_size_t size, resource_size_t align)
 {
 	struct pci_dev *dev = data;
 	struct pci_controller *hose = dev->sysdata;
-	unsigned long start = res->start;
+	resource_size_t start = res->start;
 
 	if (res->flags & IORESOURCE_IO) {
 		/* Make sure we start at our min on all hoses */
diff --git a/arch/mips/pmc-sierra/yosemite/ht.c b/arch/mips/pmc-sierra/yosemite/ht.c
index 54b65a80abf..fb523ebcafa 100644
--- a/arch/mips/pmc-sierra/yosemite/ht.c
+++ b/arch/mips/pmc-sierra/yosemite/ht.c
@@ -383,12 +383,12 @@ void pcibios_update_resource(struct pci_dev *dev, struct resource *root,
 
 
 void pcibios_align_resource(void *data, struct resource *res,
-                            unsigned long size, unsigned long align)
+                            resource_size_t size, resource_size_t align)
 {
         struct pci_dev *dev = data;
 
         if (res->flags & IORESOURCE_IO) {
-                unsigned long start = res->start;
+                resource_size_t start = res->start;
 
                 /* We need to avoid collisions with `mirrored' VGA ports
                    and other strange ISA hardware, so we always want the
diff --git a/arch/parisc/kernel/pci.c b/arch/parisc/kernel/pci.c
index 79c7db2705f..7d6967ee367 100644
--- a/arch/parisc/kernel/pci.c
+++ b/arch/parisc/kernel/pci.c
@@ -289,7 +289,7 @@ EXPORT_SYMBOL(pcibios_bus_to_resource);
  * than res->start.
  */
 void pcibios_align_resource(void *data, struct resource *res,
-				unsigned long size, unsigned long alignment)
+				resource_size_t size, resource_size_t alignment)
 {
 	unsigned long mask, align;
 
diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index d9e2506db5f..8474355a1a4 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -173,18 +173,18 @@ EXPORT_SYMBOL(pcibios_bus_to_resource);
  * but we want to try to avoid allocating at 0x2900-0x2bff
  * which might have be mirrored at 0x0100-0x03ff..
  */
-void pcibios_align_resource(void *data, struct resource *res, unsigned long size,
-		       unsigned long align)
+void pcibios_align_resource(void *data, struct resource *res,
+				resource_size_t size, resource_size_t align)
 {
 	struct pci_dev *dev = data;
 
 	if (res->flags & IORESOURCE_IO) {
-		unsigned long start = res->start;
+		resource_size_t start = res->start;
 
 		if (size > 0x100) {
 			printk(KERN_ERR "PCI: I/O Region %s/%d too large"
 			       " (%lld bytes)\n", pci_name(dev),
-			       dev->resource - res, size);
+			       dev->resource - res, (unsigned long long)size);
 		}
 
 		if (start & 0x300) {
@@ -1756,7 +1756,7 @@ long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn)
 
 void pci_resource_to_user(const struct pci_dev *dev, int bar,
 			  const struct resource *rsrc,
-			  u64 *start, u64 *end)
+			  resource_size_t *start, resource_size_t *end)
 {
 	struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
 	unsigned long offset = 0;
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 247937dd8b7..286aa52aae3 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -138,11 +138,11 @@ EXPORT_SYMBOL(pcibios_bus_to_resource);
  * which might have be mirrored at 0x0100-0x03ff..
  */
 void pcibios_align_resource(void *data, struct resource *res,
-			    unsigned long size, unsigned long align)
+			    resource_size_t size, resource_size_t align)
 {
 	struct pci_dev *dev = data;
 	struct pci_controller *hose = pci_bus_to_host(dev->bus);
-	unsigned long start = res->start;
+	resource_size_t start = res->start;
 	unsigned long alignto;
 
 	if (res->flags & IORESOURCE_IO) {
diff --git a/arch/ppc/kernel/pci.c b/arch/ppc/kernel/pci.c
index 8544e100d71..242bb052be6 100644
--- a/arch/ppc/kernel/pci.c
+++ b/arch/ppc/kernel/pci.c
@@ -171,13 +171,13 @@ EXPORT_SYMBOL(pcibios_bus_to_resource);
  * but we want to try to avoid allocating at 0x2900-0x2bff
  * which might have be mirrored at 0x0100-0x03ff..
  */
-void pcibios_align_resource(void *data, struct resource *res, unsigned long size,
-		       unsigned long align)
+void pcibios_align_resource(void *data, struct resource *res,
+				resource_size_t size, resource_size_t align)
 {
 	struct pci_dev *dev = data;
 
 	if (res->flags & IORESOURCE_IO) {
-		unsigned long start = res->start;
+		resource_size_t start = res->start;
 
 		if (size > 0x100) {
 			printk(KERN_ERR "PCI: I/O Region %s/%d too large"
@@ -960,8 +960,8 @@ static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp,
 	else
 		prot |= _PAGE_GUARDED;
 
-	printk("PCI map for %s:%llx, prot: %llx\n", pci_name(dev), rp->start,
-	       prot);
+	printk("PCI map for %s:%llx, prot: %lx\n", pci_name(dev),
+		(unsigned long long)rp->start, prot);
 
 	return __pgprot(prot);
 }
@@ -1130,7 +1130,7 @@ long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn)
 
 void pci_resource_to_user(const struct pci_dev *dev, int bar,
 			  const struct resource *rsrc,
-			  u64 *start, u64 *end)
+			  resource_size_t *start, resource_size_t *end)
 {
 	struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
 	unsigned long offset = 0;
diff --git a/arch/sh/boards/mpc1211/pci.c b/arch/sh/boards/mpc1211/pci.c
index ba3a6543975..9f7ccd33ffb 100644
--- a/arch/sh/boards/mpc1211/pci.c
+++ b/arch/sh/boards/mpc1211/pci.c
@@ -273,9 +273,9 @@ void __init pcibios_fixup_irqs(void)
 }
 
 void pcibios_align_resource(void *data, struct resource *res,
-			    unsigned long size, unsigned long align)
+			    resource_size_t size, resource_size_t align)
 {
-	unsigned long start = res->start;
+	resource_size_t start = res->start;
 
 	if (res->flags & IORESOURCE_IO) {
 		if (start >= 0x10000UL) {
diff --git a/arch/sh/boards/overdrive/galileo.c b/arch/sh/boards/overdrive/galileo.c
index 276fa11ee4c..b055809d2ac 100644
--- a/arch/sh/boards/overdrive/galileo.c
+++ b/arch/sh/boards/overdrive/galileo.c
@@ -536,7 +536,7 @@ void __init pcibios_fixup_bus(struct pci_bus *bus)
 }
 
 void pcibios_align_resource(void *data, struct resource *res,
-			    unsigned long size)
+			    resource_size_t size)
 {
 }
 
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index c1669905abe..3d546ba329c 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -75,7 +75,7 @@ pcibios_update_resource(struct pci_dev *dev, struct resource *root,
 }
 
 void pcibios_align_resource(void *data, struct resource *res,
-			    unsigned long size, unsigned long align)
+			    resource_size_t size, resource_size_t align)
 			    __attribute__ ((weak));
 
 /*
@@ -85,10 +85,10 @@ void pcibios_align_resource(void *data, struct resource *res,
  * modulo 0x400.
  */
 void pcibios_align_resource(void *data, struct resource *res,
-			    unsigned long size, unsigned long align)
+			    resource_size_t size, resource_size_t align)
 {
 	if (res->flags & IORESOURCE_IO) {
-		unsigned long start = res->start;
+		resource_size_t start = res->start;
 
 		if (start & 0x300) {
 			start = (start + 0x3ff) & ~0x3ff;
diff --git a/arch/sh64/kernel/pcibios.c b/arch/sh64/kernel/pcibios.c
index 50c61dcb9fa..945920bc24d 100644
--- a/arch/sh64/kernel/pcibios.c
+++ b/arch/sh64/kernel/pcibios.c
@@ -69,10 +69,10 @@ pcibios_update_resource(struct pci_dev *dev, struct resource *root,
  * modulo 0x400.
  */
 void pcibios_align_resource(void *data, struct resource *res,
-			    unsigned long size, unsigned long align)
+			    resource_size_t size, resource_size_t align)
 {
 	if (res->flags & IORESOURCE_IO) {
-		unsigned long start = res->start;
+		resource_size_t start = res->start;
 
 		if (start & 0x300) {
 			start = (start + 0x3ff) & ~0x3ff;
diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index bcfdddd0418..5df3ebdc0ab 100644
--- a/arch/sparc/kernel/pcic.c
+++ b/arch/sparc/kernel/pcic.c
@@ -860,7 +860,7 @@ char * __init pcibios_setup(char *str)
 }
 
 void pcibios_align_resource(void *data, struct resource *res,
-			    unsigned long size, unsigned long align)
+			    resource_size_t size, resource_size_t align)
 {
 }
 
diff --git a/arch/sparc64/kernel/pci.c b/arch/sparc64/kernel/pci.c
index 6c9e3e94aba..20ca9ec8fd3 100644
--- a/arch/sparc64/kernel/pci.c
+++ b/arch/sparc64/kernel/pci.c
@@ -357,7 +357,7 @@ void pcibios_update_irq(struct pci_dev *pdev, int irq)
 }
 
 void pcibios_align_resource(void *data, struct resource *res,
-			    unsigned long size, unsigned long align)
+			    resource_size_t size, resource_size_t align)
 {
 }
 
diff --git a/arch/v850/kernel/rte_mb_a_pci.c b/arch/v850/kernel/rte_mb_a_pci.c
index ffbb6d073bf..3a7c5c9c3ac 100644
--- a/arch/v850/kernel/rte_mb_a_pci.c
+++ b/arch/v850/kernel/rte_mb_a_pci.c
@@ -329,7 +329,7 @@ void pcibios_fixup_bus(struct pci_bus *b)
 
 void
 pcibios_align_resource (void *data, struct resource *res,
-			unsigned long size, unsigned long align)
+			resource_size_t size, resource_size_t align)
 {
 }
 
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index c6f471b9eaa..eda029fc897 100644
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c
@@ -71,13 +71,13 @@ static int pci_bus_count;
  * which might have be mirrored at 0x0100-0x03ff..
  */
 void
-pcibios_align_resource(void *data, struct resource *res, unsigned long size,
-    		       unsigned long align)
+pcibios_align_resource(void *data, struct resource *res, resource_size_t size,
+    		       resource_size_t align)
 {
 	struct pci_dev *dev = data;
 
 	if (res->flags & IORESOURCE_IO) {
-		unsigned long start = res->start;
+		resource_size_t start = res->start;
 
 		if (size > 0x100) {
 			printk(KERN_ERR "PCI: I/O Region %s/%d too large"
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 72309268202..5f7db9d2436 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -34,11 +34,11 @@
  */
 int
 pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
-	unsigned long size, unsigned long align, unsigned long min,
-	unsigned int type_mask,
-	void (*alignf)(void *, struct resource *,
-			unsigned long, unsigned long),
-	void *alignf_data)
+		resource_size_t size, resource_size_t align,
+		resource_size_t min, unsigned int type_mask,
+		void (*alignf)(void *, struct resource *, resource_size_t,
+				resource_size_t),
+		void *alignf_data)
 {
 	int i, ret = -ENOMEM;
 
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index bc405c035ce..606f9b6f70e 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -87,7 +87,7 @@ resource_show(struct device * dev, struct device_attribute *attr, char * buf)
 	char * str = buf;
 	int i;
 	int max = 7;
-	u64 start, end;
+	resource_size_t start, end;
 
 	if (pci_dev->subordinate)
 		max = DEVICE_COUNT_RESOURCE;
@@ -365,7 +365,7 @@ pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
 						       struct device, kobj));
 	struct resource *res = (struct resource *)attr->private;
 	enum pci_mmap_state mmap_type;
-	u64 start, end;
+	resource_size_t start, end;
 	int i;
 
 	for (i = 0; i < PCI_ROM_RESOURCE; i++)
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 29bdeca031a..9cc842b666e 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -6,10 +6,10 @@ extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
 extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
 extern void pci_cleanup_rom(struct pci_dev *dev);
 extern int pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
-				  unsigned long size, unsigned long align,
-				  unsigned long min, unsigned int type_mask,
+				  resource_size_t size, resource_size_t align,
+				  resource_size_t min, unsigned int type_mask,
 				  void (*alignf)(void *, struct resource *,
-					  	 unsigned long, unsigned long),
+					      resource_size_t, resource_size_t),
 				  void *alignf_data);
 /* Firmware callbacks */
 extern int (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state);
diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index 20dfd77bd8c..99cf3337976 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -350,14 +350,14 @@ static int show_device(struct seq_file *m, void *v)
 			dev->irq);
 	/* Here should be 7 and not PCI_NUM_RESOURCES as we need to preserve compatibility */
 	for (i=0; i<7; i++) {
-		u64 start, end;
+		resource_size_t start, end;
 		pci_resource_to_user(dev, i, &dev->resource[i], &start, &end);
 		seq_printf(m, "\t%16llx",
 			(unsigned long long)(start |
 			(dev->resource[i].flags & PCI_REGION_FLAG_MASK)));
 	}
 	for (i=0; i<7; i++) {
-		u64 start, end;
+		resource_size_t start, end;
 		pci_resource_to_user(dev, i, &dev->resource[i], &start, &end);
 		seq_printf(m, "\t%16llx",
 			dev->resource[i].start < dev->resource[i].end ?
diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c
index 598a115cd00..cbb69cf4131 100644
--- a/drivers/pci/rom.c
+++ b/drivers/pci/rom.c
@@ -80,8 +80,8 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size)
 	} else {
 		if (res->flags & IORESOURCE_ROM_COPY) {
 			*size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
-			return (void __iomem *)pci_resource_start(pdev,
-							     PCI_ROM_RESOURCE);
+			return (void __iomem *)(unsigned long)
+				pci_resource_start(pdev, PCI_ROM_RESOURCE);
 		} else {
 			/* assign the ROM an address if it doesn't have one */
 			if (res->parent == NULL &&
@@ -170,11 +170,11 @@ void __iomem *pci_map_rom_copy(struct pci_dev *pdev, size_t *size)
 		return rom;
 
 	res->end = res->start + *size;
-	memcpy_fromio((void*)res->start, rom, *size);
+	memcpy_fromio((void*)(unsigned long)res->start, rom, *size);
 	pci_unmap_rom(pdev, rom);
 	res->flags |= IORESOURCE_ROM_COPY;
 
-	return (void __iomem *)res->start;
+	return (void __iomem *)(unsigned long)res->start;
 }
 
 /**
@@ -227,7 +227,7 @@ void pci_cleanup_rom(struct pci_dev *pdev)
 {
 	struct resource *res = &pdev->resource[PCI_ROM_RESOURCE];
 	if (res->flags & IORESOURCE_ROM_COPY) {
-		kfree((void*)res->start);
+		kfree((void*)(unsigned long)res->start);
 		res->flags &= ~IORESOURCE_ROM_COPY;
 		res->start = 0;
 		res->end = 0;
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index f5ff0d3ba62..ab78e4bbdd8 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -121,7 +121,7 @@ int pci_assign_resource(struct pci_dev *dev, int resno)
 {
 	struct pci_bus *bus = dev->bus;
 	struct resource *res = dev->resource + resno;
-	unsigned long size, min, align;
+	resource_size_t size, min, align;
 	int ret;
 
 	size = res->end - res->start + 1;
@@ -209,7 +209,7 @@ pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
 	for (i = 0; i < PCI_NUM_RESOURCES; i++) {
 		struct resource *r;
 		struct resource_list *list, *tmp;
-		unsigned long r_align;
+		resource_size_t r_align;
 
 		r = &dev->resource[i];
 		r_align = r->end - r->start;
@@ -225,7 +225,7 @@ pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
 		}
 		r_align = (i < PCI_BRIDGE_RESOURCES) ? r_align + 1 : r->start;
 		for (list = head; ; list = list->next) {
-			unsigned long align = 0;
+			resource_size_t align = 0;
 			struct resource_list *ln = list->next;
 			int idx;
 
diff --git a/include/asm-arm/mach/pci.h b/include/asm-arm/mach/pci.h
index 25d540ed007..923e0ca6620 100644
--- a/include/asm-arm/mach/pci.h
+++ b/include/asm-arm/mach/pci.h
@@ -28,7 +28,7 @@ struct hw_pci {
 struct pci_sys_data {
 	struct list_head node;
 	int		busnr;		/* primary bus number			*/
-	unsigned long	mem_offset;	/* bus->cpu memory mapping offset	*/
+	u64		mem_offset;	/* bus->cpu memory mapping offset	*/
 	unsigned long	io_offset;	/* bus->cpu IO mapping offset		*/
 	struct pci_bus	*bus;		/* PCI bus				*/
 	struct resource *resource[3];	/* Primary PCI bus resources		*/
diff --git a/include/asm-powerpc/pci.h b/include/asm-powerpc/pci.h
index 5d2c9e6c4be..46afd29b904 100644
--- a/include/asm-powerpc/pci.h
+++ b/include/asm-powerpc/pci.h
@@ -242,7 +242,7 @@ extern pgprot_t	pci_phys_mem_access_prot(struct file *file,
 #define HAVE_ARCH_PCI_RESOURCE_TO_USER
 extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
 				 const struct resource *rsrc,
-				 u64 *start, u64 *end);
+				 resource_size_t *start, resource_size_t *end);
 #endif /* CONFIG_PPC_MULTIPLATFORM || CONFIG_PPC32 */
 
 #endif	/* __KERNEL__ */
diff --git a/include/asm-ppc/pci.h b/include/asm-ppc/pci.h
index 61434edbad7..11ffaaa5da1 100644
--- a/include/asm-ppc/pci.h
+++ b/include/asm-ppc/pci.h
@@ -133,7 +133,7 @@ extern pgprot_t	pci_phys_mem_access_prot(struct file *file,
 #define HAVE_ARCH_PCI_RESOURCE_TO_USER
 extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
 				 const struct resource *rsrc,
-				 u64 *start, u64 *end);
+				 resource_size_t *start, resource_size_t *end);
 
 
 #endif	/* __KERNEL__ */
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 62a8c22f5f6..983fca251b2 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -404,8 +404,8 @@ int pcibios_enable_device(struct pci_dev *, int mask);
 char *pcibios_setup (char *str);
 
 /* Used only when drivers/pci/setup.c is used */
-void pcibios_align_resource(void *, struct resource *,
-			    unsigned long, unsigned long);
+void pcibios_align_resource(void *, struct resource *, resource_size_t,
+				resource_size_t);
 void pcibios_update_irq(struct pci_dev *, int irq);
 
 /* Generic PCI functions used internally */
@@ -532,10 +532,10 @@ void pci_release_region(struct pci_dev *, int);
 
 /* drivers/pci/bus.c */
 int pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
-			   unsigned long size, unsigned long align,
-			   unsigned long min, unsigned int type_mask,
+			   resource_size_t size, resource_size_t align,
+			   resource_size_t min, unsigned int type_mask,
 			   void (*alignf)(void *, struct resource *,
-					  unsigned long, unsigned long),
+					  resource_size_t, resource_size_t),
 			   void *alignf_data);
 void pci_enable_bridges(struct pci_bus *bus);
 
@@ -730,7 +730,8 @@ static inline char *pci_name(struct pci_dev *pdev)
  */
 #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER
 static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
-                const struct resource *rsrc, u64 *start, u64 *end)
+                const struct resource *rsrc, resource_size_t *start,
+		resource_size_t *end)
 {
 	*start = rsrc->start;
 	*end = rsrc->end;
-- 
cgit v1.2.3-70-g09d2


From 6550e07f41ce8473ed684dac54fbfbd42183ffda Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@suse.de>
Date: Mon, 12 Jun 2006 17:11:31 -0700
Subject: [PATCH] 64bit Resource: finally enable 64bit resource sizes

Introduce the Kconfig entry and actually switch to a 64bit value, if
wanted, for resource_size_t.

Based on a patch series originally from Vivek Goyal <vgoyal@in.ibm.com>

Cc: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/i386/Kconfig     | 1 +
 include/linux/types.h | 7 ++++++-
 kernel/resource.c     | 8 +++-----
 mm/Kconfig            | 6 ++++++
 4 files changed, 16 insertions(+), 6 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index 47c08bcd9b2..7e46ad7a7b6 100644
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -529,6 +529,7 @@ config X86_PAE
 	bool
 	depends on HIGHMEM64G
 	default y
+	select RESOURCES_64BIT
 
 # Common NUMA Features
 config NUMA
diff --git a/include/linux/types.h b/include/linux/types.h
index a021e157733..3f235660a3c 100644
--- a/include/linux/types.h
+++ b/include/linux/types.h
@@ -178,9 +178,14 @@ typedef __u64 __bitwise __be64;
 #ifdef __KERNEL__
 typedef unsigned __bitwise__ gfp_t;
 
-typedef unsigned long resource_size_t;
+#ifdef CONFIG_RESOURCES_64BIT
+typedef u64 resource_size_t;
+#else
+typedef u32 resource_size_t;
 #endif
 
+#endif	/* __KERNEL__ */
+
 struct ustat {
 	__kernel_daddr_t	f_tfree;
 	__kernel_ino_t		f_tinode;
diff --git a/kernel/resource.c b/kernel/resource.c
index 54835c02ab3..cc73029088a 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -23,20 +23,18 @@
 
 struct resource ioport_resource = {
 	.name	= "PCI IO",
-	.start	= 0x0000,
+	.start	= 0,
 	.end	= IO_SPACE_LIMIT,
 	.flags	= IORESOURCE_IO,
 };
-
 EXPORT_SYMBOL(ioport_resource);
 
 struct resource iomem_resource = {
 	.name	= "PCI mem",
-	.start	= 0UL,
-	.end	= ~0UL,
+	.start	= 0,
+	.end	= -1,
 	.flags	= IORESOURCE_MEM,
 };
-
 EXPORT_SYMBOL(iomem_resource);
 
 static DEFINE_RWLOCK(resource_lock);
diff --git a/mm/Kconfig b/mm/Kconfig
index 66e65ab3942..e3644b0062b 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -145,3 +145,9 @@ config MIGRATION
 	  while the virtual addresses are not changed. This is useful for
 	  example on NUMA systems to put pages nearer to the processors accessing
 	  the page.
+
+config RESOURCES_64BIT
+	bool "64 bit Memory and IO resources (EXPERIMENTAL)" if (!64BIT && EXPERIMENTAL)
+	default 64BIT
+	help
+	  This option allows memory and IO resources to be 64 bit.
-- 
cgit v1.2.3-70-g09d2


From 87937472ff8e34ad5c7b798a8a52e4368af216df Mon Sep 17 00:00:00 2001
From: Vivek Goyal <vgoyal@in.ibm.com>
Date: Thu, 1 Jun 2006 20:39:02 -0700
Subject: [PATCH] i386: export memory more than 4G through /proc/iomem

Currently /proc/iomem exports physical memory also apart from io device
memory.  But on i386, it truncates any memory more than 4GB.  This leads to
problems for kexec/kdump.

Kexec reads /proc/iomem to determine the system memory layout and prepares a
memory map based on that and passes it to the kernel being kexeced.  Given the
fact that memory more than 4GB has been truncated, new kernel never gets to
see and use that memory.

Kdump also reads /proc/iomem to determine the physical memory layout of the
system and encodes this informaiton in ELF headers.  After a crash new kernel
parses these ELF headers being used by previous kernel and vmcore is prepared
accordingly.  As memory more than 4GB has been truncated, kdump never sees
that memory and never prepares ELF headers for it.  Hence vmcore is truncated
and limited to 4GB even if there is more physical memory in the system.

This patch exports memory more than 4GB through /proc/iomem on i386.

Cc: Maneesh Soni <maneesh@in.ibm.com>
Cc: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/i386/kernel/setup.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index 4a65040cc62..6712f0d2eb3 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -1314,8 +1314,10 @@ legacy_init_iomem_resources(struct resource *code_resource, struct resource *dat
 	probe_roms();
 	for (i = 0; i < e820.nr_map; i++) {
 		struct resource *res;
+#ifndef CONFIG_RESOURCES_64BIT
 		if (e820.map[i].addr + e820.map[i].size > 0x100000000ULL)
 			continue;
+#endif
 		res = kzalloc(sizeof(struct resource), GFP_ATOMIC);
 		switch (e820.map[i].type) {
 		case E820_RAM:	res->name = "System RAM"; break;
-- 
cgit v1.2.3-70-g09d2


From bc02af93dd2bbddce1b55e0a493f833a1b7cf140 Mon Sep 17 00:00:00 2001
From: Yasunori Goto <y-goto@jp.fujitsu.com>
Date: Tue, 27 Jun 2006 02:53:30 -0700
Subject: [PATCH] pgdat allocation for new node add (specify node id)

Change the name of old add_memory() to arch_add_memory.  And use node id to
get pgdat for the node at NODE_DATA().

Note: Powerpc's old add_memory() is defined as __devinit. However,
      add_memory() is usually called only after bootup.
      I suppose it may be redundant. But, I'm not well known about powerpc.
      So, I keep it. (But, __meminit is better at least.)

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: "Brown, Len" <len.brown@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/mm/init.c            |  2 +-
 arch/ia64/mm/init.c            |  5 ++--
 arch/powerpc/mm/mem.c          | 11 +++++--
 arch/x86_64/mm/init.c          | 66 ++++++++++++++++++++++++------------------
 drivers/acpi/Kconfig           |  2 +-
 drivers/acpi/acpi_memhotplug.c |  3 +-
 drivers/base/memory.c          |  4 ++-
 include/linux/memory_hotplug.h | 13 ++++++++-
 mm/memory_hotplug.c            | 11 +++++++
 9 files changed, 78 insertions(+), 39 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c
index bf19513f0ce..46859253179 100644
--- a/arch/i386/mm/init.c
+++ b/arch/i386/mm/init.c
@@ -654,7 +654,7 @@ void __init mem_init(void)
  */
 #ifdef CONFIG_MEMORY_HOTPLUG
 #ifndef CONFIG_NEED_MULTIPLE_NODES
-int add_memory(u64 start, u64 size)
+int arch_add_memory(int nid, u64 start, u64 size)
 {
 	struct pglist_data *pgdata = &contig_page_data;
 	struct zone *zone = pgdata->node_zones + MAX_NR_ZONES-1;
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 11f08001f8c..38306e98f04 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -652,7 +652,7 @@ void online_page(struct page *page)
 	num_physpages++;
 }
 
-int add_memory(u64 start, u64 size)
+int arch_add_memory(int nid, u64 start, u64 size)
 {
 	pg_data_t *pgdat;
 	struct zone *zone;
@@ -660,7 +660,7 @@ int add_memory(u64 start, u64 size)
 	unsigned long nr_pages = size >> PAGE_SHIFT;
 	int ret;
 
-	pgdat = NODE_DATA(0);
+	pgdat = NODE_DATA(nid);
 
 	zone = pgdat->node_zones + ZONE_NORMAL;
 	ret = __add_pages(zone, start_pfn, nr_pages);
@@ -671,7 +671,6 @@ int add_memory(u64 start, u64 size)
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(add_memory);
 
 int remove_memory(u64 start, u64 size)
 {
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 69f3b9a20be..089d939a0b3 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -114,15 +114,20 @@ void online_page(struct page *page)
 	num_physpages++;
 }
 
-int __devinit add_memory(u64 start, u64 size)
+#ifdef CONFIG_NUMA
+int memory_add_physaddr_to_nid(u64 start)
+{
+	return hot_add_scn_to_nid(start);
+}
+#endif
+
+int __devinit arch_add_memory(int nid, u64 start, u64 size)
 {
 	struct pglist_data *pgdata;
 	struct zone *zone;
-	int nid;
 	unsigned long start_pfn = start >> PAGE_SHIFT;
 	unsigned long nr_pages = size >> PAGE_SHIFT;
 
-	nid = hot_add_scn_to_nid(start);
 	pgdata = NODE_DATA(nid);
 
 	start = (unsigned long)__va(start);
diff --git a/arch/x86_64/mm/init.c b/arch/x86_64/mm/init.c
index 02add1d1dfa..51fbf3eddf1 100644
--- a/arch/x86_64/mm/init.c
+++ b/arch/x86_64/mm/init.c
@@ -506,8 +506,6 @@ void __init clear_kernel_mapping(unsigned long address, unsigned long size)
 /*
  * Memory hotplug specific functions
  */
-#if defined(CONFIG_ACPI_HOTPLUG_MEMORY) || defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)
-
 void online_page(struct page *page)
 {
 	ClearPageReserved(page);
@@ -517,31 +515,17 @@ void online_page(struct page *page)
 	num_physpages++;
 }
 
-#ifndef CONFIG_MEMORY_HOTPLUG
+#ifdef CONFIG_MEMORY_HOTPLUG
 /*
- * Memory Hotadd without sparsemem. The mem_maps have been allocated in advance,
- * just online the pages.
+ * XXX: memory_add_physaddr_to_nid() is to find node id from physical address
+ *	via probe interface of sysfs. If acpi notifies hot-add event, then it
+ *	can tell node id by searching dsdt. But, probe interface doesn't have
+ *	node id. So, return 0 as node id at this time.
  */
-int __add_pages(struct zone *z, unsigned long start_pfn, unsigned long nr_pages)
+#ifdef CONFIG_NUMA
+int memory_add_physaddr_to_nid(u64 start)
 {
-	int err = -EIO;
-	unsigned long pfn;
-	unsigned long total = 0, mem = 0;
-	for (pfn = start_pfn; pfn < start_pfn + nr_pages; pfn++) {
-		if (pfn_valid(pfn)) {
-			online_page(pfn_to_page(pfn));
-			err = 0;
-			mem++;
-		}
-		total++;
-	}
-	if (!err) {
-		z->spanned_pages += total;
-		z->present_pages += mem;
-		z->zone_pgdat->node_spanned_pages += total;
-		z->zone_pgdat->node_present_pages += mem;
-	}
-	return err;
+	return 0;
 }
 #endif
 
@@ -549,9 +533,9 @@ int __add_pages(struct zone *z, unsigned long start_pfn, unsigned long nr_pages)
  * Memory is added always to NORMAL zone. This means you will never get
  * additional DMA/DMA32 memory.
  */
-int add_memory(u64 start, u64 size)
+int arch_add_memory(int nid, u64 start, u64 size)
 {
-	struct pglist_data *pgdat = NODE_DATA(0);
+	struct pglist_data *pgdat = NODE_DATA(nid);
 	struct zone *zone = pgdat->node_zones + MAX_NR_ZONES-2;
 	unsigned long start_pfn = start >> PAGE_SHIFT;
 	unsigned long nr_pages = size >> PAGE_SHIFT;
@@ -568,7 +552,7 @@ error:
 	printk("%s: Problem encountered in __add_pages!\n", __func__);
 	return ret;
 }
-EXPORT_SYMBOL_GPL(add_memory);
+EXPORT_SYMBOL_GPL(arch_add_memory);
 
 int remove_memory(u64 start, u64 size)
 {
@@ -576,7 +560,33 @@ int remove_memory(u64 start, u64 size)
 }
 EXPORT_SYMBOL_GPL(remove_memory);
 
-#endif
+#else /* CONFIG_MEMORY_HOTPLUG */
+/*
+ * Memory Hotadd without sparsemem. The mem_maps have been allocated in advance,
+ * just online the pages.
+ */
+int __add_pages(struct zone *z, unsigned long start_pfn, unsigned long nr_pages)
+{
+	int err = -EIO;
+	unsigned long pfn;
+	unsigned long total = 0, mem = 0;
+	for (pfn = start_pfn; pfn < start_pfn + nr_pages; pfn++) {
+		if (pfn_valid(pfn)) {
+			online_page(pfn_to_page(pfn));
+			err = 0;
+			mem++;
+		}
+		total++;
+	}
+	if (!err) {
+		z->spanned_pages += total;
+		z->present_pages += mem;
+		z->zone_pgdat->node_spanned_pages += total;
+		z->zone_pgdat->node_present_pages += mem;
+	}
+	return err;
+}
+#endif /* CONFIG_MEMORY_HOTPLUG */
 
 static struct kcore_list kcore_mem, kcore_vmalloc, kcore_kernel, kcore_modules,
 			 kcore_vsyscall;
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 94b8d820c51..610d2cc02cf 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -328,7 +328,7 @@ config ACPI_CONTAINER
 config ACPI_HOTPLUG_MEMORY
 	tristate "Memory Hotplug"
 	depends on ACPI
-	depends on MEMORY_HOTPLUG || X86_64
+	depends on MEMORY_HOTPLUG
 	default n
 	help
 	  This driver adds supports for ACPI Memory Hotplug.  This driver
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 5652569b376..0424326eae1 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -215,6 +215,7 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
 {
 	int result, num_enabled = 0;
 	struct acpi_memory_info *info;
+	int node = 0;
 
 	ACPI_FUNCTION_TRACE("acpi_memory_enable_device");
 
@@ -245,7 +246,7 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
 			continue;
 		}
 
-		result = add_memory(info->start_addr, info->length);
+		result = add_memory(node, info->start_addr, info->length);
 		if (result)
 			continue;
 		info->enabled = 1;
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index dd547af4681..c6b7d9c4b65 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -306,11 +306,13 @@ static ssize_t
 memory_probe_store(struct class *class, const char *buf, size_t count)
 {
 	u64 phys_addr;
+	int nid;
 	int ret;
 
 	phys_addr = simple_strtoull(buf, NULL, 0);
 
-	ret = add_memory(phys_addr, PAGES_PER_SECTION << PAGE_SHIFT);
+	nid = memory_add_physaddr_to_nid(phys_addr);
+	ret = add_memory(nid, phys_addr, PAGES_PER_SECTION << PAGE_SHIFT);
 
 	if (ret)
 		count = ret;
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 91120638617..29c1472efad 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -63,6 +63,16 @@ extern int online_pages(unsigned long, unsigned long);
 /* reasonably generic interface to expand the physical pages in a zone  */
 extern int __add_pages(struct zone *zone, unsigned long start_pfn,
 	unsigned long nr_pages);
+
+#ifdef CONFIG_NUMA
+extern int memory_add_physaddr_to_nid(u64 start);
+#else
+static inline int memory_add_physaddr_to_nid(u64 start)
+{
+	return 0;
+}
+#endif
+
 #else /* ! CONFIG_MEMORY_HOTPLUG */
 /*
  * Stub functions for when hotplug is off
@@ -99,7 +109,8 @@ static inline int __remove_pages(struct zone *zone, unsigned long start_pfn,
 	return -ENOSYS;
 }
 
-extern int add_memory(u64 start, u64 size);
+extern int add_memory(int nid, u64 start, u64 size);
+extern int arch_add_memory(int nid, u64 start, u64 size);
 extern int remove_memory(u64 start, u64 size);
 
 #endif /* __LINUX_MEMORY_HOTPLUG_H */
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 841a077d5ae..6cdeabe9f6d 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -163,3 +163,14 @@ int online_pages(unsigned long pfn, unsigned long nr_pages)
 	vm_total_pages = nr_free_pagecache_pages();
 	return 0;
 }
+
+int add_memory(int nid, u64 start, u64 size)
+{
+	int ret;
+
+	/* call arch's memory hotadd */
+	ret = arch_add_memory(nid, start, size);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(add_memory);
-- 
cgit v1.2.3-70-g09d2


From 0fc44159bfcb5b0afa178f9c3f50db23aebc76ff Mon Sep 17 00:00:00 2001
From: Yasunori Goto <y-goto@jp.fujitsu.com>
Date: Tue, 27 Jun 2006 02:53:38 -0700
Subject: [PATCH] Register sysfs file for hotplugged new node

When new node becomes enable by hot-add, new sysfs file must be created for
new node.  So, if new node is enabled by add_memory(), register_one_node() is
called to create it.  In addition, I386's arch_register_node() and a part of
register_nodes() of powerpc are consolidated to register_one_node() as a
generic_code().

This is tested by Tiger4(IPF) with node hot-plug emulation.

Signed-off-by: Keiichiro Tokunaga <tokuanga.keiich@jp.fujitsu.com>
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/topology.c |  9 +++------
 arch/ia64/kernel/topology.c | 15 +++------------
 arch/powerpc/kernel/sysfs.c | 15 ++-------------
 drivers/base/node.c         | 25 +++++++++++++++++++++++++
 include/asm-i386/cpu.h      |  2 --
 include/asm-i386/node.h     | 29 -----------------------------
 include/linux/node.h        |  4 ++++
 mm/memory_hotplug.c         | 12 +++++++++++-
 8 files changed, 48 insertions(+), 63 deletions(-)
 delete mode 100644 include/asm-i386/node.h

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/topology.c b/arch/i386/kernel/topology.c
index 296355292c7..1eecc2e1bd4 100644
--- a/arch/i386/kernel/topology.c
+++ b/arch/i386/kernel/topology.c
@@ -38,7 +38,7 @@ int arch_register_cpu(int num){
 #ifdef CONFIG_NUMA
 	int node = cpu_to_node(num);
 	if (node_online(node))
-		parent = &node_devices[node].node;
+		parent = &node_devices[parent_node(node)];
 #endif /* CONFIG_NUMA */
 
 	/*
@@ -61,7 +61,7 @@ void arch_unregister_cpu(int num) {
 #ifdef CONFIG_NUMA
 	int node = cpu_to_node(num);
 	if (node_online(node))
-		parent = &node_devices[node].node;
+		parent = &node_devices[parent_node(node)];
 #endif /* CONFIG_NUMA */
 
 	return unregister_cpu(&cpu_devices[num].cpu, parent);
@@ -74,16 +74,13 @@ EXPORT_SYMBOL(arch_unregister_cpu);
 
 #ifdef CONFIG_NUMA
 #include <linux/mmzone.h>
-#include <asm/node.h>
-
-struct i386_node node_devices[MAX_NUMNODES];
 
 static int __init topology_init(void)
 {
 	int i;
 
 	for_each_online_node(i)
-		arch_register_node(i);
+		register_one_node(i);
 
 	for_each_present_cpu(i)
 		arch_register_cpu(i);
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index 879edb51d1e..42cb05bdc68 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -26,9 +26,6 @@
 #include <asm/numa.h>
 #include <asm/cpu.h>
 
-#ifdef CONFIG_NUMA
-static struct node *sysfs_nodes;
-#endif
 static struct ia64_cpu *sysfs_cpus;
 
 int arch_register_cpu(int num)
@@ -36,7 +33,7 @@ int arch_register_cpu(int num)
 	struct node *parent = NULL;
 	
 #ifdef CONFIG_NUMA
-	parent = &sysfs_nodes[cpu_to_node(num)];
+	parent = &node_devices[cpu_to_node(num)];
 #endif /* CONFIG_NUMA */
 
 #if defined (CONFIG_ACPI) && defined (CONFIG_HOTPLUG_CPU)
@@ -59,7 +56,7 @@ void arch_unregister_cpu(int num)
 
 #ifdef CONFIG_NUMA
 	int node = cpu_to_node(num);
-	parent = &sysfs_nodes[node];
+	parent = &node_devices[node];
 #endif /* CONFIG_NUMA */
 
 	return unregister_cpu(&sysfs_cpus[num].cpu, parent);
@@ -74,17 +71,11 @@ static int __init topology_init(void)
 	int i, err = 0;
 
 #ifdef CONFIG_NUMA
-	sysfs_nodes = kzalloc(sizeof(struct node) * MAX_NUMNODES, GFP_KERNEL);
-	if (!sysfs_nodes) {
-		err = -ENOMEM;
-		goto out;
-	}
-
 	/*
 	 * MCD - Do we want to register all ONLINE nodes, or all POSSIBLE nodes?
 	 */
 	for_each_online_node(i) {
-		if ((err = register_node(&sysfs_nodes[i], i, 0)))
+		if ((err = register_one_node(i)))
 			goto out;
 	}
 #endif
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 5bc2585c803..338491d1604 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -304,23 +304,12 @@ static struct notifier_block sysfs_cpu_nb = {
 /* NUMA stuff */
 
 #ifdef CONFIG_NUMA
-static struct node node_devices[MAX_NUMNODES];
-
 static void register_nodes(void)
 {
 	int i;
 
-	for (i = 0; i < MAX_NUMNODES; i++) {
-		if (node_online(i)) {
-			int p_node = parent_node(i);
-			struct node *parent = NULL;
-
-			if (p_node != i)
-				parent = &node_devices[p_node];
-
-			register_node(&node_devices[i], i, parent);
-		}
-	}
+	for (i = 0; i < MAX_NUMNODES; i++)
+		register_one_node(i);
 }
 
 int sysfs_add_device_to_node(struct sys_device *dev, int nid)
diff --git a/drivers/base/node.c b/drivers/base/node.c
index c80c3aeed00..cbd0f62b487 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -190,6 +190,31 @@ void unregister_node(struct node *node)
 	sysdev_unregister(&node->sysdev);
 }
 
+struct node node_devices[MAX_NUMNODES];
+
+int register_one_node(int nid)
+{
+	int error = 0;
+
+	if (node_online(nid)) {
+		int p_node = parent_node(nid);
+		struct node *parent = NULL;
+
+		if (p_node != nid)
+			parent = &node_devices[p_node];
+
+		error = register_node(&node_devices[nid], nid, parent);
+	}
+
+	return error;
+
+}
+
+void unregister_one_node(int nid)
+{
+	unregister_node(&node_devices[nid]);
+}
+
 static int __init register_node_type(void)
 {
 	return sysdev_class_register(&node_class);
diff --git a/include/asm-i386/cpu.h b/include/asm-i386/cpu.h
index e7252c216ca..b1bc7b1b64b 100644
--- a/include/asm-i386/cpu.h
+++ b/include/asm-i386/cpu.h
@@ -7,8 +7,6 @@
 #include <linux/nodemask.h>
 #include <linux/percpu.h>
 
-#include <asm/node.h>
-
 struct i386_cpu {
 	struct cpu cpu;
 };
diff --git a/include/asm-i386/node.h b/include/asm-i386/node.h
deleted file mode 100644
index e13c6ffa72a..00000000000
--- a/include/asm-i386/node.h
+++ /dev/null
@@ -1,29 +0,0 @@
-#ifndef _ASM_I386_NODE_H_
-#define _ASM_I386_NODE_H_
-
-#include <linux/device.h>
-#include <linux/mmzone.h>
-#include <linux/node.h>
-#include <linux/topology.h>
-#include <linux/nodemask.h>
-
-struct i386_node {
-	struct node node;
-};
-extern struct i386_node node_devices[MAX_NUMNODES];
-
-static inline int arch_register_node(int num){
-	int p_node;
-	struct node *parent = NULL;
-
-	if (!node_online(num))
-		return 0;
-	p_node = parent_node(num);
-
-	if (p_node != num)
-		parent = &node_devices[p_node].node;
-
-	return register_node(&node_devices[num].node, num, parent);
-}
-
-#endif /* _ASM_I386_NODE_H_ */
diff --git a/include/linux/node.h b/include/linux/node.h
index 254dc3de650..1e5347527fa 100644
--- a/include/linux/node.h
+++ b/include/linux/node.h
@@ -26,8 +26,12 @@ struct node {
 	struct sys_device	sysdev;
 };
 
+extern struct node node_devices[];
+
 extern int register_node(struct node *, int, struct node *);
 extern void unregister_node(struct node *node);
+extern int register_one_node(int nid);
+extern void unregister_one_node(int nid);
 
 #define to_node(sys_device) container_of(sys_device, struct node, sysdev)
 
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index f13783e81eb..ea4038838b0 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -256,9 +256,19 @@ int add_memory(int nid, u64 start, u64 size)
 	if (ret < 0)
 		goto error;
 
-	/* we online node here. we have no error path from here. */
+	/* we online node here. we can't roll back from here. */
 	node_set_online(nid);
 
+	if (new_pgdat) {
+		ret = register_one_node(nid);
+		/*
+		 * If sysfs file of new node can't create, cpu on the node
+		 * can't be hot-added. There is no rollback way now.
+		 * So, check by BUG_ON() to catch it reluctantly..
+		 */
+		BUG_ON(ret);
+	}
+
 	/* register this memory as resource */
 	register_memory_resource(start, size);
 
-- 
cgit v1.2.3-70-g09d2


From 76b67ed9dce69a6a329cdd66f94af1787f417b62 Mon Sep 17 00:00:00 2001
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Date: Tue, 27 Jun 2006 02:53:41 -0700
Subject: [PATCH] node hotplug: register cpu: remove node struct

With Goto-san's patch, we can add new pgdat/node at runtime.  I'm now
considering node-hot-add with cpu + memory on ACPI.

I found acpi container, which describes node, could evaluate cpu before
memory. This means cpu-hot-add occurs before memory hot add.

In most part, cpu-hot-add doesn't depend on node hot add.  But register_cpu(),
which creates symbolic link from node to cpu, requires that node should be
onlined before register_cpu().  When a node is onlined, its pgdat should be
there.

This patch-set holds off creating symbolic link from node to cpu
until node is onlined.

This removes node arguments from register_cpu().

Now, register_cpu() requires 'struct node' as its argument.  But the array of
struct node is now unified in driver/base/node.c now (By Goto's node hotplug
patch).  We can get struct node in generic way.  So, this argument is not
necessary now.

This patch also guarantees add cpu under node only when node is onlined.  It
is necessary for node-hot-add vs.  cpu-hot-add patch following this.

Moreover, register_cpu calculates cpu->node_id by cpu_to_node() without regard
to its 'struct node *root' argument.  This patch removes it.

Also modify callers of register_cpu()/unregister_cpu, whose args are changed
by register-cpu-remove-node-struct patch.

[Brice.Goglin@ens-lyon.org: fix it]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Brice Goglin <Brice.Goglin@ens-lyon.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/alpha/kernel/setup.c      |  2 +-
 arch/arm/kernel/setup.c        |  2 +-
 arch/i386/kernel/topology.c    | 23 ++++-------------------
 arch/ia64/kernel/topology.c    | 17 ++---------------
 arch/m32r/kernel/setup.c       |  2 +-
 arch/mips/kernel/smp.c         |  2 +-
 arch/parisc/kernel/topology.c  |  3 +--
 arch/powerpc/kernel/setup_32.c |  2 +-
 arch/powerpc/kernel/sysfs.c    | 12 +-----------
 arch/ppc/kernel/setup.c        |  2 +-
 arch/s390/kernel/smp.c         |  2 +-
 arch/sh/kernel/setup.c         |  2 +-
 arch/sh64/kernel/setup.c       |  2 +-
 arch/sparc64/kernel/setup.c    |  2 +-
 drivers/base/cpu.c             | 18 ++++++++----------
 drivers/base/node.c            | 36 ++++++++++++++++++++++++++++++++++++
 include/linux/cpu.h            |  4 ++--
 include/linux/node.h           | 13 +++++++++++++
 18 files changed, 77 insertions(+), 69 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index 558b8336855..254c507a608 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -481,7 +481,7 @@ register_cpus(void)
 		struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
 		if (!p)
 			return -ENOMEM;
-		register_cpu(p, i, NULL);
+		register_cpu(p, i);
 	}
 	return 0;
 }
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 9fc9af88c60..093ccba0503 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -808,7 +808,7 @@ static int __init topology_init(void)
 	int cpu;
 
 	for_each_possible_cpu(cpu)
-		register_cpu(&per_cpu(cpu_data, cpu).cpu, cpu, NULL);
+		register_cpu(&per_cpu(cpu_data, cpu).cpu, cpu);
 
 	return 0;
 }
diff --git a/arch/i386/kernel/topology.c b/arch/i386/kernel/topology.c
index 1eecc2e1bd4..e2e281d4bcc 100644
--- a/arch/i386/kernel/topology.c
+++ b/arch/i386/kernel/topology.c
@@ -32,15 +32,8 @@
 
 static struct i386_cpu cpu_devices[NR_CPUS];
 
-int arch_register_cpu(int num){
-	struct node *parent = NULL;
-
-#ifdef CONFIG_NUMA
-	int node = cpu_to_node(num);
-	if (node_online(node))
-		parent = &node_devices[parent_node(node)];
-#endif /* CONFIG_NUMA */
-
+int arch_register_cpu(int num)
+{
 	/*
 	 * CPU0 cannot be offlined due to several
 	 * restrictions and assumptions in kernel. This basically
@@ -50,21 +43,13 @@ int arch_register_cpu(int num){
 	if (!num)
 		cpu_devices[num].cpu.no_control = 1;
 
-	return register_cpu(&cpu_devices[num].cpu, num, parent);
+	return register_cpu(&cpu_devices[num].cpu, num);
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
 
 void arch_unregister_cpu(int num) {
-	struct node *parent = NULL;
-
-#ifdef CONFIG_NUMA
-	int node = cpu_to_node(num);
-	if (node_online(node))
-		parent = &node_devices[parent_node(node)];
-#endif /* CONFIG_NUMA */
-
-	return unregister_cpu(&cpu_devices[num].cpu, parent);
+	return unregister_cpu(&cpu_devices[num].cpu);
 }
 EXPORT_SYMBOL(arch_register_cpu);
 EXPORT_SYMBOL(arch_unregister_cpu);
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index 42cb05bdc68..5737c9a061e 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -30,12 +30,6 @@ static struct ia64_cpu *sysfs_cpus;
 
 int arch_register_cpu(int num)
 {
-	struct node *parent = NULL;
-	
-#ifdef CONFIG_NUMA
-	parent = &node_devices[cpu_to_node(num)];
-#endif /* CONFIG_NUMA */
-
 #if defined (CONFIG_ACPI) && defined (CONFIG_HOTPLUG_CPU)
 	/*
 	 * If CPEI cannot be re-targetted, and this is
@@ -45,21 +39,14 @@ int arch_register_cpu(int num)
 		sysfs_cpus[num].cpu.no_control = 1;
 #endif
 
-	return register_cpu(&sysfs_cpus[num].cpu, num, parent);
+	return register_cpu(&sysfs_cpus[num].cpu, num);
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
 
 void arch_unregister_cpu(int num)
 {
-	struct node *parent = NULL;
-
-#ifdef CONFIG_NUMA
-	int node = cpu_to_node(num);
-	parent = &node_devices[node];
-#endif /* CONFIG_NUMA */
-
-	return unregister_cpu(&sysfs_cpus[num].cpu, parent);
+	return unregister_cpu(&sysfs_cpus[num].cpu);
 }
 EXPORT_SYMBOL(arch_register_cpu);
 EXPORT_SYMBOL(arch_unregister_cpu);
diff --git a/arch/m32r/kernel/setup.c b/arch/m32r/kernel/setup.c
index 3cd3c2988a4..1ff483c8a4c 100644
--- a/arch/m32r/kernel/setup.c
+++ b/arch/m32r/kernel/setup.c
@@ -275,7 +275,7 @@ static int __init topology_init(void)
 	int i;
 
 	for_each_present_cpu(i)
-		register_cpu(&cpu_devices[i], i, NULL);
+		register_cpu(&cpu_devices[i], i);
 
 	return 0;
 }
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index 298f82fe844..9096a5ea422 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -446,7 +446,7 @@ static int __init topology_init(void)
 	int ret;
 
 	for_each_present_cpu(cpu) {
-		ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu, NULL);
+		ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu);
 		if (ret)
 			printk(KERN_WARNING "topology_init: register_cpu %d "
 			       "failed (%d)\n", cpu, ret);
diff --git a/arch/parisc/kernel/topology.c b/arch/parisc/kernel/topology.c
index 3ba040050e4..068b20d822e 100644
--- a/arch/parisc/kernel/topology.c
+++ b/arch/parisc/kernel/topology.c
@@ -26,11 +26,10 @@ static struct cpu cpu_devices[NR_CPUS] __read_mostly;
 
 static int __init topology_init(void)
 {
-	struct node *parent = NULL;
 	int num;
 
 	for_each_present_cpu(num) {
-		register_cpu(&cpu_devices[num], num, parent);
+		register_cpu(&cpu_devices[num], num);
 	}
 	return 0;
 }
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index e5a44812441..0932a62a1c9 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -215,7 +215,7 @@ int __init ppc_init(void)
 
 	/* register CPU devices */
 	for_each_possible_cpu(i)
-		register_cpu(&cpu_devices[i], i, NULL);
+		register_cpu(&cpu_devices[i], i);
 
 	/* call platform init */
 	if (ppc_md.init != NULL) {
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 338491d1604..412ad00e222 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -348,23 +348,13 @@ static SYSDEV_ATTR(physical_id, 0444, show_physical_id, NULL);
 static int __init topology_init(void)
 {
 	int cpu;
-	struct node *parent = NULL;
 
 	register_nodes();
-
 	register_cpu_notifier(&sysfs_cpu_nb);
 
 	for_each_possible_cpu(cpu) {
 		struct cpu *c = &per_cpu(cpu_devices, cpu);
 
-#ifdef CONFIG_NUMA
-		/* The node to which a cpu belongs can't be known
-		 * until the cpu is made present.
-		 */
-		parent = NULL;
-		if (cpu_present(cpu))
-			parent = &node_devices[cpu_to_node(cpu)];
-#endif
 		/*
 		 * For now, we just see if the system supports making
 		 * the RTAS calls for CPU hotplug.  But, there may be a
@@ -376,7 +366,7 @@ static int __init topology_init(void)
 			c->no_control = 1;
 
 		if (cpu_online(cpu) || (c->no_control == 0)) {
-			register_cpu(c, cpu, parent);
+			register_cpu(c, cpu);
 
 			sysdev_create_file(&c->sysdev, &attr_physical_id);
 		}
diff --git a/arch/ppc/kernel/setup.c b/arch/ppc/kernel/setup.c
index 1f79e84ab46..4b4607d89bf 100644
--- a/arch/ppc/kernel/setup.c
+++ b/arch/ppc/kernel/setup.c
@@ -475,7 +475,7 @@ int __init ppc_init(void)
 
 	/* register CPU devices */
 	for_each_possible_cpu(i)
-		register_cpu(&cpu_devices[i], i, NULL);
+		register_cpu(&cpu_devices[i], i);
 
 	/* call platform init */
 	if (ppc_md.init != NULL) {
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 343120c9223..8e03219eea7 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -869,7 +869,7 @@ static int __init topology_init(void)
 	int ret;
 
 	for_each_possible_cpu(cpu) {
-		ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu, NULL);
+		ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu);
 		if (ret)
 			printk(KERN_WARNING "topology_init: register_cpu %d "
 			       "failed (%d)\n", cpu, ret);
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index bb229ef030f..9af22116c9a 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -402,7 +402,7 @@ static int __init topology_init(void)
 	int cpu_id;
 
 	for_each_possible_cpu(cpu_id)
-		register_cpu(&cpu[cpu_id], cpu_id, NULL);
+		register_cpu(&cpu[cpu_id], cpu_id);
 
 	return 0;
 }
diff --git a/arch/sh64/kernel/setup.c b/arch/sh64/kernel/setup.c
index d2711c9c9d1..da98d8dbcf9 100644
--- a/arch/sh64/kernel/setup.c
+++ b/arch/sh64/kernel/setup.c
@@ -309,7 +309,7 @@ static struct cpu cpu[1];
 
 static int __init topology_init(void)
 {
-	return register_cpu(cpu, 0, NULL);
+	return register_cpu(cpu, 0);
 }
 
 subsys_initcall(topology_init);
diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c
index a6a7d816834..116d9632002 100644
--- a/arch/sparc64/kernel/setup.c
+++ b/arch/sparc64/kernel/setup.c
@@ -537,7 +537,7 @@ static int __init topology_init(void)
 	for_each_possible_cpu(i) {
 		struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
 		if (p) {
-			register_cpu(p, i, NULL);
+			register_cpu(p, i);
 			err = 0;
 		}
 	}
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index dd712b24ec9..3972d8ac978 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -8,6 +8,7 @@
 #include <linux/cpu.h>
 #include <linux/topology.h>
 #include <linux/device.h>
+#include <linux/node.h>
 
 #include "base.h"
 
@@ -57,13 +58,12 @@ static void __devinit register_cpu_control(struct cpu *cpu)
 {
 	sysdev_create_file(&cpu->sysdev, &attr_online);
 }
-void unregister_cpu(struct cpu *cpu, struct node *root)
+void unregister_cpu(struct cpu *cpu)
 {
 	int logical_cpu = cpu->sysdev.id;
 
-	if (root)
-		sysfs_remove_link(&root->sysdev.kobj,
-				  kobject_name(&cpu->sysdev.kobj));
+	unregister_cpu_under_node(logical_cpu, cpu_to_node(logical_cpu));
+
 	sysdev_remove_file(&cpu->sysdev, &attr_online);
 
 	sysdev_unregister(&cpu->sysdev);
@@ -109,23 +109,21 @@ static SYSDEV_ATTR(crash_notes, 0400, show_crash_notes, NULL);
  *
  * Initialize and register the CPU device.
  */
-int __devinit register_cpu(struct cpu *cpu, int num, struct node *root)
+int __devinit register_cpu(struct cpu *cpu, int num)
 {
 	int error;
-
 	cpu->node_id = cpu_to_node(num);
 	cpu->sysdev.id = num;
 	cpu->sysdev.cls = &cpu_sysdev_class;
 
 	error = sysdev_register(&cpu->sysdev);
-	if (!error && root)
-		error = sysfs_create_link(&root->sysdev.kobj,
-					  &cpu->sysdev.kobj,
-					  kobject_name(&cpu->sysdev.kobj));
+
 	if (!error && !cpu->no_control)
 		register_cpu_control(cpu);
 	if (!error)
 		cpu_sys_devices[num] = &cpu->sysdev;
+	if (!error)
+		register_cpu_under_node(num, cpu_to_node(num));
 
 #ifdef CONFIG_KEXEC
 	if (!error)
diff --git a/drivers/base/node.c b/drivers/base/node.c
index cbd0f62b487..eae2bdc183b 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -11,6 +11,7 @@
 #include <linux/cpumask.h>
 #include <linux/topology.h>
 #include <linux/nodemask.h>
+#include <linux/cpu.h>
 
 static struct sysdev_class node_class = {
 	set_kset_name("node"),
@@ -192,9 +193,38 @@ void unregister_node(struct node *node)
 
 struct node node_devices[MAX_NUMNODES];
 
+/*
+ * register cpu under node
+ */
+int register_cpu_under_node(unsigned int cpu, unsigned int nid)
+{
+	if (node_online(nid)) {
+		struct sys_device *obj = get_cpu_sysdev(cpu);
+		if (!obj)
+			return 0;
+		return sysfs_create_link(&node_devices[nid].sysdev.kobj,
+					 &obj->kobj,
+					 kobject_name(&obj->kobj));
+	 }
+
+	return 0;
+}
+
+int unregister_cpu_under_node(unsigned int cpu, unsigned int nid)
+{
+	if (node_online(nid)) {
+		struct sys_device *obj = get_cpu_sysdev(cpu);
+		if (obj)
+			sysfs_remove_link(&node_devices[nid].sysdev.kobj,
+					 kobject_name(&obj->kobj));
+	}
+	return 0;
+}
+
 int register_one_node(int nid)
 {
 	int error = 0;
+	int cpu;
 
 	if (node_online(nid)) {
 		int p_node = parent_node(nid);
@@ -204,6 +234,12 @@ int register_one_node(int nid)
 			parent = &node_devices[p_node];
 
 		error = register_node(&node_devices[nid], nid, parent);
+
+		/* link cpu under this node */
+		for_each_present_cpu(cpu) {
+			if (cpu_to_node(cpu) == nid)
+				register_cpu_under_node(cpu, nid);
+		}
 	}
 
 	return error;
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 08d50c53aab..b23bf1c8add 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -31,10 +31,10 @@ struct cpu {
 	struct sys_device sysdev;
 };
 
-extern int register_cpu(struct cpu *, int, struct node *);
+extern int register_cpu(struct cpu *cpu, int num);
 extern struct sys_device *get_cpu_sysdev(unsigned cpu);
 #ifdef CONFIG_HOTPLUG_CPU
-extern void unregister_cpu(struct cpu *, struct node *);
+extern void unregister_cpu(struct cpu *cpu);
 #endif
 struct notifier_block;
 
diff --git a/include/linux/node.h b/include/linux/node.h
index 1e5347527fa..81dcec84cd8 100644
--- a/include/linux/node.h
+++ b/include/linux/node.h
@@ -32,6 +32,19 @@ extern int register_node(struct node *, int, struct node *);
 extern void unregister_node(struct node *node);
 extern int register_one_node(int nid);
 extern void unregister_one_node(int nid);
+#ifdef CONFIG_NUMA
+extern int register_cpu_under_node(unsigned int cpu, unsigned int nid);
+extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid);
+#else
+static inline int register_cpu_under_node(unsigned int cpu, unsigned int nid)
+{
+	return 0;
+}
+static inline int unregister_cpu_under_node(unsigned int cpu, unsigned int nid)
+{
+	return 0;
+}
+#endif
 
 #define to_node(sys_device) container_of(sys_device, struct node, sysdev)
 
-- 
cgit v1.2.3-70-g09d2


From bd9e0b74f52dbac6241643fadca2393808b14c7a Mon Sep 17 00:00:00 2001
From: Shaohua Li <shaohua.li@intel.com>
Date: Tue, 27 Jun 2006 02:53:43 -0700
Subject: [PATCH] x86: cpu_init(): avoid GFP_KERNEL allocation while atomic

The patch fixes two issues:

1.  cpu_init is called with interrupt disabled.  Allocating gdt table
   there isn't good at runtime.

2. gdt table page cause memory leak in CPU hotplug case.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/cpu/common.c |  8 +++++++-
 arch/i386/kernel/smpboot.c    | 13 +++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c
index 44f2c5f2dda..640364d9b66 100644
--- a/arch/i386/kernel/cpu/common.c
+++ b/arch/i386/kernel/cpu/common.c
@@ -613,6 +613,12 @@ void __cpuinit cpu_init(void)
 		set_in_cr4(X86_CR4_TSD);
 	}
 
+	/* The CPU hotplug case */
+	if (cpu_gdt_descr->address) {
+		gdt = (struct desc_struct *)cpu_gdt_descr->address;
+		memset(gdt, 0, PAGE_SIZE);
+		goto old_gdt;
+	}
 	/*
 	 * This is a horrible hack to allocate the GDT.  The problem
 	 * is that cpu_init() is called really early for the boot CPU
@@ -631,7 +637,7 @@ void __cpuinit cpu_init(void)
 				local_irq_enable();
 		}
 	}
-
+old_gdt:
 	/*
 	 * Initialize the per-CPU GDT with the boot GDT,
 	 * and set up the GDT descriptor:
diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c
index bce5470ecb4..9466a3c9ff0 100644
--- a/arch/i386/kernel/smpboot.c
+++ b/arch/i386/kernel/smpboot.c
@@ -1056,6 +1056,7 @@ static int __cpuinit __smp_prepare_cpu(int cpu)
 	struct warm_boot_cpu_info info;
 	struct work_struct task;
 	int	apicid, ret;
+	struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, cpu);
 
 	apicid = x86_cpu_to_apicid[cpu];
 	if (apicid == BAD_APICID) {
@@ -1063,6 +1064,18 @@ static int __cpuinit __smp_prepare_cpu(int cpu)
 		goto exit;
 	}
 
+	/*
+	 * the CPU isn't initialized at boot time, allocate gdt table here.
+	 * cpu_init will initialize it
+	 */
+	if (!cpu_gdt_descr->address) {
+		cpu_gdt_descr->address = get_zeroed_page(GFP_KERNEL);
+		if (!cpu_gdt_descr->address)
+			printk(KERN_CRIT "CPU%d failed to allocate GDT\n", cpu);
+			ret = -ENOMEM;
+			goto exit;
+	}
+
 	info.complete = &done;
 	info.apicid = apicid;
 	info.cpu = cpu;
-- 
cgit v1.2.3-70-g09d2


From 19eadf98c8167eac843580683317b99572e2abf0 Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Tue, 27 Jun 2006 02:53:44 -0700
Subject: [PATCH] x86: increase interrupt vector range

Remove the limit of 256 interrupt vectors by changing the value stored in
orig_{e,r}ax to be the complemented interrupt vector.  The orig_{e,r}ax
needs to be < 0 to allow the signal code to distinguish between return from
interrupt and return from syscall.  With this change applied, NR_IRQS can
be > 256.

Xen extends the IRQ numbering space to include room for dynamically
allocated virtual interrupts (in the range 256-511), which requires a more
permissive interface to do_IRQ.

Signed-off-by: Ian Pratt <ian.pratt@xensource.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: "Protasevich, Natalie" <Natalie.Protasevich@UNISYS.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/entry.S    | 4 ++--
 arch/i386/kernel/irq.c      | 4 ++--
 arch/x86_64/kernel/entry.S  | 2 +-
 arch/x86_64/kernel/irq.c    | 4 ++--
 arch/x86_64/kernel/smp.c    | 4 ++--
 include/asm-x86_64/hw_irq.h | 2 +-
 6 files changed, 10 insertions(+), 10 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/entry.S b/arch/i386/kernel/entry.S
index e6e4506e749..8713e0248a0 100644
--- a/arch/i386/kernel/entry.S
+++ b/arch/i386/kernel/entry.S
@@ -515,7 +515,7 @@ ENTRY(irq_entries_start)
  .if vector
 	CFI_ADJUST_CFA_OFFSET -4
  .endif
-1:	pushl $vector-256
+1:	pushl $~(vector)
 	CFI_ADJUST_CFA_OFFSET 4
 	jmp common_interrupt
 .data
@@ -535,7 +535,7 @@ common_interrupt:
 #define BUILD_INTERRUPT(name, nr)	\
 ENTRY(name)				\
 	RING0_INT_FRAME;		\
-	pushl $nr-256;			\
+	pushl $~(nr);			\
 	CFI_ADJUST_CFA_OFFSET 4;	\
 	SAVE_ALL;			\
 	movl %esp,%eax;			\
diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
index 061533e0cb5..586b15f6741 100644
--- a/arch/i386/kernel/irq.c
+++ b/arch/i386/kernel/irq.c
@@ -53,8 +53,8 @@ static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
  */
 fastcall unsigned int do_IRQ(struct pt_regs *regs)
 {	
-	/* high bits used in ret_from_ code */
-	int irq = regs->orig_eax & 0xff;
+	/* high bit used in ret_from_ code */
+	int irq = ~regs->orig_eax;
 #ifdef CONFIG_4KSTACKS
 	union irq_ctx *curctx, *irqctx;
 	u32 *isp;
diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index 7290e72b9a3..22cac4487b5 100644
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -588,7 +588,7 @@ END(common_interrupt)
  */		
 	.macro apicinterrupt num,func
 	INTR_FRAME
-	pushq $\num-256
+	pushq $~(\num)
 	CFI_ADJUST_CFA_OFFSET 8
 	interrupt \func
 	jmp ret_from_intr
diff --git a/arch/x86_64/kernel/irq.c b/arch/x86_64/kernel/irq.c
index 59518d4d435..3be0a7e4bf0 100644
--- a/arch/x86_64/kernel/irq.c
+++ b/arch/x86_64/kernel/irq.c
@@ -115,8 +115,8 @@ skip:
  */
 asmlinkage unsigned int do_IRQ(struct pt_regs *regs)
 {	
-	/* high bits used in ret_from_ code  */
-	unsigned irq = regs->orig_rax & 0xff;
+	/* high bit used in ret_from_ code  */
+	unsigned irq = ~regs->orig_rax;
 
 	exit_idle();
 	irq_enter();
diff --git a/arch/x86_64/kernel/smp.c b/arch/x86_64/kernel/smp.c
index acee4bc3f6f..5a1c0a3bf87 100644
--- a/arch/x86_64/kernel/smp.c
+++ b/arch/x86_64/kernel/smp.c
@@ -135,10 +135,10 @@ asmlinkage void smp_invalidate_interrupt(struct pt_regs *regs)
 
 	cpu = smp_processor_id();
 	/*
-	 * orig_rax contains the interrupt vector - 256.
+	 * orig_rax contains the negated interrupt vector.
 	 * Use that to determine where the sender put the data.
 	 */
-	sender = regs->orig_rax + 256 - INVALIDATE_TLB_VECTOR_START;
+	sender = ~regs->orig_rax - INVALIDATE_TLB_VECTOR_START;
 	f = &per_cpu(flush_state, sender);
 
 	if (!cpu_isset(cpu, f->flush_cpumask))
diff --git a/include/asm-x86_64/hw_irq.h b/include/asm-x86_64/hw_irq.h
index 1b2ac55d320..93187746278 100644
--- a/include/asm-x86_64/hw_irq.h
+++ b/include/asm-x86_64/hw_irq.h
@@ -124,7 +124,7 @@ asmlinkage void IRQ_NAME(nr); \
 __asm__( \
 "\n.p2align\n" \
 "IRQ" #nr "_interrupt:\n\t" \
-	"push $" #nr "-256 ; " \
+	"push $~(" #nr ") ; " \
 	"jmp common_interrupt");
 
 #if defined(CONFIG_X86_IO_APIC)
-- 
cgit v1.2.3-70-g09d2


From 7f35bf929ffe2b3967c8f398880fcb78fcd2ab5c Mon Sep 17 00:00:00 2001
From: Andreas Mohr <andi@rhlx01.fht-esslingen.de>
Date: Tue, 27 Jun 2006 02:53:45 -0700
Subject: [PATCH] x86: constify some parts of arch/i386/kernel/cpu/

Signed-off-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/cpu/intel_cacheinfo.c | 6 +++---
 arch/i386/kernel/cpu/proc.c            | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/cpu/intel_cacheinfo.c b/arch/i386/kernel/cpu/intel_cacheinfo.c
index 6c37b4fd8ce..f24a0145024 100644
--- a/arch/i386/kernel/cpu/intel_cacheinfo.c
+++ b/arch/i386/kernel/cpu/intel_cacheinfo.c
@@ -159,13 +159,13 @@ union l2_cache {
 	unsigned val;
 };
 
-static unsigned short assocs[] = {
+static const unsigned short assocs[] = {
 	[1] = 1, [2] = 2, [4] = 4, [6] = 8,
 	[8] = 16,
 	[0xf] = 0xffff // ??
 	};
-static unsigned char levels[] = { 1, 1, 2 };
-static unsigned char types[] = { 1, 2, 3 };
+static const unsigned char levels[] = { 1, 1, 2 };
+static const unsigned char types[] = { 1, 2, 3 };
 
 static void __cpuinit amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax,
 		       union _cpuid4_leaf_ebx *ebx,
diff --git a/arch/i386/kernel/cpu/proc.c b/arch/i386/kernel/cpu/proc.c
index a19fcb262db..4b03f9f5832 100644
--- a/arch/i386/kernel/cpu/proc.c
+++ b/arch/i386/kernel/cpu/proc.c
@@ -18,7 +18,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	 * applications want to get the raw CPUID data, they should access
 	 * /dev/cpu/<cpu_nr>/cpuid instead.
 	 */
-	static char *x86_cap_flags[] = {
+	static const char * const x86_cap_flags[] = {
 		/* Intel-defined */
 	        "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
 	        "cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
@@ -62,7 +62,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
 		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
 	};
-	static char *x86_power_flags[] = {
+	static const char * const x86_power_flags[] = {
 		"ts",	/* temperature sensor */
 		"fid",  /* frequency id control */
 		"vid",  /* voltage id control */
-- 
cgit v1.2.3-70-g09d2


From 4b89aff930d632be10d557d08d1b60dee7163dbe Mon Sep 17 00:00:00 2001
From: Rohit Seth <rohitseth@google.com>
Date: Tue, 27 Jun 2006 02:53:46 -0700
Subject: [PATCH] i386: move phys_proc_id and cpu_core_id to cpuinfo_x86

Move the phys_core_id and cpu_core_id to cpuinfo_x86 structure.  Similar
patch for x86_64 is already accepted by Andi earlier this week.

[akpm@osdl.org: fix warning]
Signed-off-by: Rohit Seth <rohitseth@google.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/cpu/amd.c    |  6 +++---
 arch/i386/kernel/cpu/common.c | 15 +++++++--------
 arch/i386/kernel/cpu/proc.c   |  4 ++--
 arch/i386/kernel/smpboot.c    | 16 +++++-----------
 include/asm-i386/processor.h  |  8 +++++---
 include/asm-i386/topology.h   |  6 ++----
 6 files changed, 24 insertions(+), 31 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/cpu/amd.c b/arch/i386/kernel/cpu/amd.c
index fd0457c9c82..e6a2d6b80cd 100644
--- a/arch/i386/kernel/cpu/amd.c
+++ b/arch/i386/kernel/cpu/amd.c
@@ -235,10 +235,10 @@ static void __init init_amd(struct cpuinfo_x86 *c)
 			while ((1 << bits) < c->x86_max_cores)
 				bits++;
 		}
-		cpu_core_id[cpu] = phys_proc_id[cpu] & ((1<<bits)-1);
-		phys_proc_id[cpu] >>= bits;
+		c->cpu_core_id = c->phys_proc_id & ((1<<bits)-1);
+		c->phys_proc_id >>= bits;
 		printk(KERN_INFO "CPU %d(%d) -> Core %d\n",
-		       cpu, c->x86_max_cores, cpu_core_id[cpu]);
+		       cpu, c->x86_max_cores, c->cpu_core_id);
 	}
 #endif
 
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c
index 640364d9b66..2fa401f19f3 100644
--- a/arch/i386/kernel/cpu/common.c
+++ b/arch/i386/kernel/cpu/common.c
@@ -319,7 +319,7 @@ void __cpuinit generic_identify(struct cpuinfo_x86 * c)
 	early_intel_workaround(c);
 
 #ifdef CONFIG_X86_HT
-	phys_proc_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff;
+	c->phys_proc_id = (cpuid_ebx(1) >> 24) & 0xff;
 #endif
 }
 
@@ -477,11 +477,9 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
 {
 	u32 	eax, ebx, ecx, edx;
 	int 	index_msb, core_bits;
-	int 	cpu = smp_processor_id();
 
 	cpuid(1, &eax, &ebx, &ecx, &edx);
 
-
 	if (!cpu_has(c, X86_FEATURE_HT) || cpu_has(c, X86_FEATURE_CMP_LEGACY))
 		return;
 
@@ -492,16 +490,17 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
 	} else if (smp_num_siblings > 1 ) {
 
 		if (smp_num_siblings > NR_CPUS) {
-			printk(KERN_WARNING "CPU: Unsupported number of the siblings %d", smp_num_siblings);
+			printk(KERN_WARNING "CPU: Unsupported number of the "
+					"siblings %d", smp_num_siblings);
 			smp_num_siblings = 1;
 			return;
 		}
 
 		index_msb = get_count_order(smp_num_siblings);
-		phys_proc_id[cpu] = phys_pkg_id((ebx >> 24) & 0xFF, index_msb);
+		c->phys_proc_id = phys_pkg_id((ebx >> 24) & 0xFF, index_msb);
 
 		printk(KERN_INFO  "CPU: Physical Processor ID: %d\n",
-		       phys_proc_id[cpu]);
+		       c->phys_proc_id);
 
 		smp_num_siblings = smp_num_siblings / c->x86_max_cores;
 
@@ -509,12 +508,12 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
 
 		core_bits = get_count_order(c->x86_max_cores);
 
-		cpu_core_id[cpu] = phys_pkg_id((ebx >> 24) & 0xFF, index_msb) &
+		c->cpu_core_id = phys_pkg_id((ebx >> 24) & 0xFF, index_msb) &
 					       ((1 << core_bits) - 1);
 
 		if (c->x86_max_cores > 1)
 			printk(KERN_INFO  "CPU: Processor Core ID: %d\n",
-			       cpu_core_id[cpu]);
+			       c->cpu_core_id);
 	}
 }
 #endif
diff --git a/arch/i386/kernel/cpu/proc.c b/arch/i386/kernel/cpu/proc.c
index 4b03f9f5832..f54a15268ed 100644
--- a/arch/i386/kernel/cpu/proc.c
+++ b/arch/i386/kernel/cpu/proc.c
@@ -109,9 +109,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 		seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size);
 #ifdef CONFIG_X86_HT
 	if (c->x86_max_cores * smp_num_siblings > 1) {
-		seq_printf(m, "physical id\t: %d\n", phys_proc_id[n]);
+		seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
 		seq_printf(m, "siblings\t: %d\n", cpus_weight(cpu_core_map[n]));
-		seq_printf(m, "core id\t\t: %d\n", cpu_core_id[n]);
+		seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
 		seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
 	}
 #endif
diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c
index 9466a3c9ff0..ab5275beddf 100644
--- a/arch/i386/kernel/smpboot.c
+++ b/arch/i386/kernel/smpboot.c
@@ -67,12 +67,6 @@ int smp_num_siblings = 1;
 EXPORT_SYMBOL(smp_num_siblings);
 #endif
 
-/* Package ID of each logical CPU */
-int phys_proc_id[NR_CPUS] __read_mostly = {[0 ... NR_CPUS-1] = BAD_APICID};
-
-/* Core ID of each logical CPU */
-int cpu_core_id[NR_CPUS] __read_mostly = {[0 ... NR_CPUS-1] = BAD_APICID};
-
 /* Last level cache ID of each logical CPU */
 int cpu_llc_id[NR_CPUS] __cpuinitdata = {[0 ... NR_CPUS-1] = BAD_APICID};
 
@@ -473,8 +467,8 @@ set_cpu_sibling_map(int cpu)
 
 	if (smp_num_siblings > 1) {
 		for_each_cpu_mask(i, cpu_sibling_setup_map) {
-			if (phys_proc_id[cpu] == phys_proc_id[i] &&
-			    cpu_core_id[cpu] == cpu_core_id[i]) {
+			if (c[cpu].phys_proc_id == c[i].phys_proc_id &&
+			    c[cpu].cpu_core_id == c[i].cpu_core_id) {
 				cpu_set(i, cpu_sibling_map[cpu]);
 				cpu_set(cpu, cpu_sibling_map[i]);
 				cpu_set(i, cpu_core_map[cpu]);
@@ -501,7 +495,7 @@ set_cpu_sibling_map(int cpu)
 			cpu_set(i, c[cpu].llc_shared_map);
 			cpu_set(cpu, c[i].llc_shared_map);
 		}
-		if (phys_proc_id[cpu] == phys_proc_id[i]) {
+		if (c[cpu].phys_proc_id == c[i].phys_proc_id) {
 			cpu_set(i, cpu_core_map[cpu]);
 			cpu_set(cpu, cpu_core_map[i]);
 			/*
@@ -1353,8 +1347,8 @@ remove_siblinginfo(int cpu)
 		cpu_clear(cpu, cpu_sibling_map[sibling]);
 	cpus_clear(cpu_sibling_map[cpu]);
 	cpus_clear(cpu_core_map[cpu]);
-	phys_proc_id[cpu] = BAD_APICID;
-	cpu_core_id[cpu] = BAD_APICID;
+	c[cpu].phys_proc_id = 0;
+	c[cpu].cpu_core_id = 0;
 	cpu_clear(cpu, cpu_sibling_setup_map);
 }
 
diff --git a/include/asm-i386/processor.h b/include/asm-i386/processor.h
index 55ea992da32..b32346d62e1 100644
--- a/include/asm-i386/processor.h
+++ b/include/asm-i386/processor.h
@@ -71,8 +71,12 @@ struct cpuinfo_x86 {
 	cpumask_t llc_shared_map;	/* cpus sharing the last level cache */
 #endif
 	unsigned char x86_max_cores;	/* cpuid returned max cores value */
-	unsigned char booted_cores;	/* number of cores as seen by OS */
 	unsigned char apicid;
+#ifdef CONFIG_SMP
+	unsigned char booted_cores;	/* number of cores as seen by OS */
+	__u8 phys_proc_id; 		/* Physical processor id. */
+	__u8 cpu_core_id;  		/* Core id */
+#endif
 } __attribute__((__aligned__(SMP_CACHE_BYTES)));
 
 #define X86_VENDOR_INTEL 0
@@ -104,8 +108,6 @@ extern struct cpuinfo_x86 cpu_data[];
 #define current_cpu_data boot_cpu_data
 #endif
 
-extern	int phys_proc_id[NR_CPUS];
-extern	int cpu_core_id[NR_CPUS];
 extern	int cpu_llc_id[NR_CPUS];
 extern char ignore_fpu_irq;
 
diff --git a/include/asm-i386/topology.h b/include/asm-i386/topology.h
index b94e5eeef91..aa4185ee81f 100644
--- a/include/asm-i386/topology.h
+++ b/include/asm-i386/topology.h
@@ -28,10 +28,8 @@
 #define _ASM_I386_TOPOLOGY_H
 
 #ifdef CONFIG_X86_HT
-#define topology_physical_package_id(cpu)				\
-	(phys_proc_id[cpu] == BAD_APICID ? -1 : phys_proc_id[cpu])
-#define topology_core_id(cpu)						\
-	(cpu_core_id[cpu] == BAD_APICID ? 0 : cpu_core_id[cpu])
+#define topology_physical_package_id(cpu)	(cpu_data[cpu].phys_proc_id)
+#define topology_core_id(cpu)			(cpu_data[cpu].cpu_core_id)
 #define topology_core_siblings(cpu)		(cpu_core_map[cpu])
 #define topology_thread_siblings(cpu)		(cpu_sibling_map[cpu])
 #endif
-- 
cgit v1.2.3-70-g09d2


From 4031ff388138b58e5cd472dccce38828bcb8c706 Mon Sep 17 00:00:00 2001
From: Aleksey Gorelov <Aleksey_Gorelov@Phoenix.com>
Date: Tue, 27 Jun 2006 02:53:48 -0700
Subject: [PATCH] fix broken vm86 interrupt/signal handling

Commit c3ff8ec31c1249d268cd11390649768a12bec1b9 ("[PATCH] i386: Don't
miss pending signals returning to user mode after signal processing")
meant that vm86 interrupt/signal handling got broken for the case when
vm86 is called from kernel space.

In this scenario, if signal is pending because of vm86 interrupt,
do_notify_resume/do_signal exits immediately due to user_mode() check,
without processing any signals.  Thus, resume_userspace handler is spinning
in a tight loop with signal pending and TIF_SIGPENDING is set.  Previously
everything worked Ok.

No in-tree usage of vm86() from kernel space exists, but I've heard
about a number of projects out there which use vm86 calls from kernel,
one of them being this, for instance:

	http://dev.gentoo.org/~spock/projects/vesafb-tng/

The following patch fixes the issue.

Signed-off-by: Aleksey Gorelov <aleksey_gorelov@phoenix.com>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/entry.S | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/entry.S b/arch/i386/kernel/entry.S
index 8713e0248a0..e8d2630fd19 100644
--- a/arch/i386/kernel/entry.S
+++ b/arch/i386/kernel/entry.S
@@ -83,6 +83,12 @@ VM_MASK		= 0x00020000
 #define resume_kernel		restore_nocheck
 #endif
 
+#ifdef CONFIG_VM86
+#define resume_userspace_sig	check_userspace
+#else
+#define resume_userspace_sig	resume_userspace
+#endif
+
 #define SAVE_ALL \
 	cld; \
 	pushl %es; \
@@ -211,6 +217,7 @@ ret_from_exception:
 	preempt_stop
 ret_from_intr:
 	GET_THREAD_INFO(%ebp)
+check_userspace:
 	movl EFLAGS(%esp), %eax		# mix EFLAGS and CS
 	movb CS(%esp), %al
 	testl $(VM_MASK | 3), %eax
@@ -415,7 +422,7 @@ work_notifysig:				# deal with pending signals and
 					# vm86-space
 	xorl %edx, %edx
 	call do_notify_resume
-	jmp resume_userspace
+	jmp resume_userspace_sig
 
 	ALIGN
 work_notifysig_v86:
@@ -428,7 +435,7 @@ work_notifysig_v86:
 	movl %eax, %esp
 	xorl %edx, %edx
 	call do_notify_resume
-	jmp resume_userspace
+	jmp resume_userspace_sig
 #endif
 
 	# perform syscall exit tracing
-- 
cgit v1.2.3-70-g09d2


From 96c52749036eca2b131f435d3895a3c6aba92e76 Mon Sep 17 00:00:00 2001
From: James Bottomley <James.Bottomley@SteelEye.com>
Date: Tue, 27 Jun 2006 02:53:49 -0700
Subject: [PATCH] fix subarchitecture breakage with CONFIG_SCHED_SMT

Commit 1e9f28fa1eb9773bf65bae08288c6a0a38eef4a7 ("[PATCH] sched: new
sched domain for representing multi-core") incorrectly made SCHED_SMT
and some of the structures it uses dependent on SMP.

However, this is wrong, the structures are only defined if X86_HT, so
SCHED_SMT has to depend on that as well.

The patch broke voyager, since it doesn't provide any of the multi-core
or hyperthreading structures.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/Kconfig                      | 4 ++--
 arch/i386/kernel/cpu/common.c          | 2 +-
 arch/i386/kernel/cpu/intel_cacheinfo.c | 6 +++---
 3 files changed, 6 insertions(+), 6 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index 47c08bcd9b2..6662f8c4479 100644
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -233,7 +233,7 @@ config NR_CPUS
 
 config SCHED_SMT
 	bool "SMT (Hyperthreading) scheduler support"
-	depends on SMP
+	depends on X86_HT
 	help
 	  SMT scheduler support improves the CPU scheduler's decision making
 	  when dealing with Intel Pentium 4 chips with HyperThreading at a
@@ -242,7 +242,7 @@ config SCHED_SMT
 
 config SCHED_MC
 	bool "Multi-core scheduler support"
-	depends on SMP
+	depends on X86_HT
 	default y
 	help
 	  Multi-core scheduler support improves the CPU scheduler's decision
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c
index 2fa401f19f3..70c87de582c 100644
--- a/arch/i386/kernel/cpu/common.c
+++ b/arch/i386/kernel/cpu/common.c
@@ -294,7 +294,7 @@ void __cpuinit generic_identify(struct cpuinfo_x86 * c)
 			if (c->x86 >= 0x6)
 				c->x86_model += ((tfms >> 16) & 0xF) << 4;
 			c->x86_mask = tfms & 15;
-#ifdef CONFIG_SMP
+#ifdef CONFIG_X86_HT
 			c->apicid = phys_pkg_id((ebx >> 24) & 0xFF, 0);
 #else
 			c->apicid = (ebx >> 24) & 0xFF;
diff --git a/arch/i386/kernel/cpu/intel_cacheinfo.c b/arch/i386/kernel/cpu/intel_cacheinfo.c
index f24a0145024..8a92642ea59 100644
--- a/arch/i386/kernel/cpu/intel_cacheinfo.c
+++ b/arch/i386/kernel/cpu/intel_cacheinfo.c
@@ -261,7 +261,7 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
 	unsigned int new_l1d = 0, new_l1i = 0; /* Cache sizes from cpuid(4) */
 	unsigned int new_l2 = 0, new_l3 = 0, i; /* Cache sizes from cpuid(4) */
 	unsigned int l2_id = 0, l3_id = 0, num_threads_sharing, index_msb;
-#ifdef CONFIG_SMP
+#ifdef CONFIG_X86_HT
 	unsigned int cpu = (c == &boot_cpu_data) ? 0 : (c - cpu_data);
 #endif
 
@@ -383,14 +383,14 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
 
 	if (new_l2) {
 		l2 = new_l2;
-#ifdef CONFIG_SMP
+#ifdef CONFIG_X86_HT
 		cpu_llc_id[cpu] = l2_id;
 #endif
 	}
 
 	if (new_l3) {
 		l3 = new_l3;
-#ifdef CONFIG_SMP
+#ifdef CONFIG_X86_HT
 		cpu_llc_id[cpu] = l3_id;
 #endif
 	}
-- 
cgit v1.2.3-70-g09d2


From d5fb34261dcd32c9cb3b28121fdc46308db513a1 Mon Sep 17 00:00:00 2001
From: James Bottomley <James.Bottomley@SteelEye.com>
Date: Tue, 27 Jun 2006 02:53:50 -0700
Subject: [PATCH] voyager: fix compile after setup rework

The following

[PATCH] Clean up and refactor i386 sub-architecture setup

Doesn't quite work, since it leaves out an include of asm/io.h, without
which the use of inb/outb in the setup file won.t work.  This corrects that
and also removes a spurious acpi reference that apparently crept in ages
ago but should never have been there.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/mach-voyager/setup.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/mach-voyager/setup.c b/arch/i386/mach-voyager/setup.c
index 0e225054e22..defc6ebbd56 100644
--- a/arch/i386/mach-voyager/setup.c
+++ b/arch/i386/mach-voyager/setup.c
@@ -5,10 +5,10 @@
 #include <linux/config.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
-#include <asm/acpi.h>
 #include <asm/arch_hooks.h>
 #include <asm/voyager.h>
 #include <asm/e820.h>
+#include <asm/io.h>
 #include <asm/setup.h>
 
 void __init pre_intr_init_hook(void)
@@ -27,8 +27,7 @@ void __init intr_init_hook(void)
 	smp_intr_init();
 #endif
 
-	if (!acpi_ioapic)
-		setup_irq(2, &irq2);
+	setup_irq(2, &irq2);
 }
 
 void __init pre_setup_arch_hook(void)
-- 
cgit v1.2.3-70-g09d2


From e6e5494cb23d1933735ee47cc674ffe1c4afed6f Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Tue, 27 Jun 2006 02:53:50 -0700
Subject: [PATCH] vdso: randomize the i386 vDSO by moving it into a vma

Move the i386 VDSO down into a vma and thus randomize it.

Besides the security implications, this feature also helps debuggers, which
can COW a vma-backed VDSO just like a normal DSO and can thus do
single-stepping and other debugging features.

It's good for hypervisors (Xen, VMWare) too, which typically live in the same
high-mapped address space as the VDSO, hence whenever the VDSO is used, they
get lots of guest pagefaults and have to fix such guest accesses up - which
slows things down instead of speeding things up (the primary purpose of the
VDSO).

There's a new CONFIG_COMPAT_VDSO (default=y) option, which provides support
for older glibcs that still rely on a prelinked high-mapped VDSO.  Newer
distributions (using glibc 2.3.3 or later) can turn this option off.  Turning
it off is also recommended for security reasons: attackers cannot use the
predictable high-mapped VDSO page as syscall trampoline anymore.

There is a new vdso=[0|1] boot option as well, and a runtime
/proc/sys/vm/vdso_enabled sysctl switch, that allows the VDSO to be turned
on/off.

(This version of the VDSO-randomization patch also has working ELF
coredumping, the previous patch crashed in the coredumping code.)

This code is a combined work of the exec-shield VDSO randomization
code and Gerd Hoffmann's hypervisor-centric VDSO patch. Rusty Russell
started this patch and i completed it.

[akpm@osdl.org: cleanups]
[akpm@osdl.org: compile fix]
[akpm@osdl.org: compile fix 2]
[akpm@osdl.org: compile fix 3]
[akpm@osdl.org: revernt MAXMEM change]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Cc: Gerd Hoffmann <kraxel@suse.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Zachary Amsden <zach@vmware.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Documentation/kernel-parameters.txt  |   4 ++
 arch/i386/Kconfig                    |  11 +++
 arch/i386/kernel/asm-offsets.c       |   4 +-
 arch/i386/kernel/entry.S             |   7 +-
 arch/i386/kernel/signal.c            |   4 +-
 arch/i386/kernel/sysenter.c          | 128 +++++++++++++++++++++++++++++++++--
 arch/i386/kernel/vsyscall-sysenter.S |   4 +-
 arch/i386/kernel/vsyscall.lds.S      |   4 +-
 fs/proc/task_mmu.c                   |  30 ++++----
 include/asm-i386/elf.h               |  53 +++++++++++----
 include/asm-i386/fixmap.h            |  10 +--
 include/asm-i386/mmu.h               |   1 +
 include/asm-i386/page.h              |   3 +
 include/asm-i386/thread_info.h       |   1 +
 include/asm-i386/unwind.h            |   4 +-
 include/linux/mm.h                   |   2 +
 include/linux/sysctl.h               |   1 +
 kernel/sysctl.c                      |  12 ++++
 18 files changed, 235 insertions(+), 48 deletions(-)

(limited to 'arch/i386')

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 2e352a605fc..0d189c93eea 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1669,6 +1669,10 @@ running once the system is up.
 	usbhid.mousepoll=
 			[USBHID] The interval which mice are to be polled at.
 
+	vdso=		[IA-32]
+			vdso=1: enable VDSO (default)
+			vdso=0: disable VDSO mapping
+
 	video=		[FB] Frame buffer configuration
 			See Documentation/fb/modedb.txt.
 
diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index 6662f8c4479..3bb221db164 100644
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -780,6 +780,17 @@ config HOTPLUG_CPU
 	  enable suspend on SMP systems. CPUs can be controlled through
 	  /sys/devices/system/cpu.
 
+config COMPAT_VDSO
+	bool "Compat VDSO support"
+	default y
+	help
+	  Map the VDSO to the predictable old-style address too.
+	---help---
+	  Say N here if you are running a sufficiently recent glibc
+	  version (2.3.3 or later), to remove the high-mapped
+	  VDSO mapping and to exclusively use the randomized VDSO.
+
+	  If unsure, say Y.
 
 endmenu
 
diff --git a/arch/i386/kernel/asm-offsets.c b/arch/i386/kernel/asm-offsets.c
index 1c3a809e642..c80271f8f08 100644
--- a/arch/i386/kernel/asm-offsets.c
+++ b/arch/i386/kernel/asm-offsets.c
@@ -14,6 +14,7 @@
 #include <asm/fixmap.h>
 #include <asm/processor.h>
 #include <asm/thread_info.h>
+#include <asm/elf.h>
 
 #define DEFINE(sym, val) \
         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
@@ -54,6 +55,7 @@ void foo(void)
 	OFFSET(TI_preempt_count, thread_info, preempt_count);
 	OFFSET(TI_addr_limit, thread_info, addr_limit);
 	OFFSET(TI_restart_block, thread_info, restart_block);
+	OFFSET(TI_sysenter_return, thread_info, sysenter_return);
 	BLANK();
 
 	OFFSET(EXEC_DOMAIN_handler, exec_domain, handler);
@@ -69,7 +71,7 @@ void foo(void)
 		 sizeof(struct tss_struct));
 
 	DEFINE(PAGE_SIZE_asm, PAGE_SIZE);
-	DEFINE(VSYSCALL_BASE, __fix_to_virt(FIX_VSYSCALL));
+	DEFINE(VDSO_PRELINK, VDSO_PRELINK);
 
 	OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx);
 }
diff --git a/arch/i386/kernel/entry.S b/arch/i386/kernel/entry.S
index e8d2630fd19..fbdb933251b 100644
--- a/arch/i386/kernel/entry.S
+++ b/arch/i386/kernel/entry.S
@@ -270,7 +270,12 @@ sysenter_past_esp:
 	pushl $(__USER_CS)
 	CFI_ADJUST_CFA_OFFSET 4
 	/*CFI_REL_OFFSET cs, 0*/
-	pushl $SYSENTER_RETURN
+	/*
+	 * Push current_thread_info()->sysenter_return to the stack.
+	 * A tiny bit of offset fixup is necessary - 4*4 means the 4 words
+	 * pushed above; +8 corresponds to copy_thread's esp0 setting.
+	 */
+	pushl (TI_sysenter_return-THREAD_SIZE+8+4*4)(%esp)
 	CFI_ADJUST_CFA_OFFSET 4
 	CFI_REL_OFFSET eip, 0
 
diff --git a/arch/i386/kernel/signal.c b/arch/i386/kernel/signal.c
index 5c352c3a9e7..43002cfb40c 100644
--- a/arch/i386/kernel/signal.c
+++ b/arch/i386/kernel/signal.c
@@ -351,7 +351,7 @@ static int setup_frame(int sig, struct k_sigaction *ka,
 			goto give_sigsegv;
 	}
 
-	restorer = &__kernel_sigreturn;
+	restorer = (void *)VDSO_SYM(&__kernel_sigreturn);
 	if (ka->sa.sa_flags & SA_RESTORER)
 		restorer = ka->sa.sa_restorer;
 
@@ -447,7 +447,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 		goto give_sigsegv;
 
 	/* Set up to return from userspace.  */
-	restorer = &__kernel_rt_sigreturn;
+	restorer = (void *)VDSO_SYM(&__kernel_rt_sigreturn);
 	if (ka->sa.sa_flags & SA_RESTORER)
 		restorer = ka->sa.sa_restorer;
 	err |= __put_user(restorer, &frame->pretcode);
diff --git a/arch/i386/kernel/sysenter.c b/arch/i386/kernel/sysenter.c
index 0bada1870bd..c60419dee01 100644
--- a/arch/i386/kernel/sysenter.c
+++ b/arch/i386/kernel/sysenter.c
@@ -2,6 +2,8 @@
  * linux/arch/i386/kernel/sysenter.c
  *
  * (C) Copyright 2002 Linus Torvalds
+ * Portions based on the vdso-randomization code from exec-shield:
+ * Copyright(C) 2005-2006, Red Hat, Inc., Ingo Molnar
  *
  * This file contains the needed initializations to support sysenter.
  */
@@ -13,12 +15,31 @@
 #include <linux/gfp.h>
 #include <linux/string.h>
 #include <linux/elf.h>
+#include <linux/mm.h>
+#include <linux/module.h>
 
 #include <asm/cpufeature.h>
 #include <asm/msr.h>
 #include <asm/pgtable.h>
 #include <asm/unistd.h>
 
+/*
+ * Should the kernel map a VDSO page into processes and pass its
+ * address down to glibc upon exec()?
+ */
+unsigned int __read_mostly vdso_enabled = 1;
+
+EXPORT_SYMBOL_GPL(vdso_enabled);
+
+static int __init vdso_setup(char *s)
+{
+	vdso_enabled = simple_strtoul(s, NULL, 0);
+
+	return 1;
+}
+
+__setup("vdso=", vdso_setup);
+
 extern asmlinkage void sysenter_entry(void);
 
 void enable_sep_cpu(void)
@@ -45,23 +66,122 @@ void enable_sep_cpu(void)
  */
 extern const char vsyscall_int80_start, vsyscall_int80_end;
 extern const char vsyscall_sysenter_start, vsyscall_sysenter_end;
+static void *syscall_page;
 
 int __init sysenter_setup(void)
 {
-	void *page = (void *)get_zeroed_page(GFP_ATOMIC);
+	syscall_page = (void *)get_zeroed_page(GFP_ATOMIC);
 
-	__set_fixmap(FIX_VSYSCALL, __pa(page), PAGE_READONLY_EXEC);
+#ifdef CONFIG_COMPAT_VDSO
+	__set_fixmap(FIX_VDSO, __pa(syscall_page), PAGE_READONLY);
+	printk("Compat vDSO mapped to %08lx.\n", __fix_to_virt(FIX_VDSO));
+#else
+	/*
+	 * In the non-compat case the ELF coredumping code needs the fixmap:
+	 */
+	__set_fixmap(FIX_VDSO, __pa(syscall_page), PAGE_KERNEL_RO);
+#endif
 
 	if (!boot_cpu_has(X86_FEATURE_SEP)) {
-		memcpy(page,
+		memcpy(syscall_page,
 		       &vsyscall_int80_start,
 		       &vsyscall_int80_end - &vsyscall_int80_start);
 		return 0;
 	}
 
-	memcpy(page,
+	memcpy(syscall_page,
 	       &vsyscall_sysenter_start,
 	       &vsyscall_sysenter_end - &vsyscall_sysenter_start);
 
 	return 0;
 }
+
+static struct page *syscall_nopage(struct vm_area_struct *vma,
+				unsigned long adr, int *type)
+{
+	struct page *p = virt_to_page(adr - vma->vm_start + syscall_page);
+	get_page(p);
+	return p;
+}
+
+/* Prevent VMA merging */
+static void syscall_vma_close(struct vm_area_struct *vma)
+{
+}
+
+static struct vm_operations_struct syscall_vm_ops = {
+	.close = syscall_vma_close,
+	.nopage = syscall_nopage,
+};
+
+/* Defined in vsyscall-sysenter.S */
+extern void SYSENTER_RETURN;
+
+/* Setup a VMA at program startup for the vsyscall page */
+int arch_setup_additional_pages(struct linux_binprm *bprm, int exstack)
+{
+	struct vm_area_struct *vma;
+	struct mm_struct *mm = current->mm;
+	unsigned long addr;
+	int ret;
+
+	down_write(&mm->mmap_sem);
+	addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, 0);
+	if (IS_ERR_VALUE(addr)) {
+		ret = addr;
+		goto up_fail;
+	}
+
+	vma = kmem_cache_zalloc(vm_area_cachep, SLAB_KERNEL);
+	if (!vma) {
+		ret = -ENOMEM;
+		goto up_fail;
+	}
+
+	vma->vm_start = addr;
+	vma->vm_end = addr + PAGE_SIZE;
+	/* MAYWRITE to allow gdb to COW and set breakpoints */
+	vma->vm_flags = VM_READ|VM_EXEC|VM_MAYREAD|VM_MAYEXEC|VM_MAYWRITE;
+	vma->vm_flags |= mm->def_flags;
+	vma->vm_page_prot = protection_map[vma->vm_flags & 7];
+	vma->vm_ops = &syscall_vm_ops;
+	vma->vm_mm = mm;
+
+	ret = insert_vm_struct(mm, vma);
+	if (ret)
+		goto free_vma;
+
+	current->mm->context.vdso = (void *)addr;
+	current_thread_info()->sysenter_return =
+				    (void *)VDSO_SYM(&SYSENTER_RETURN);
+	mm->total_vm++;
+up_fail:
+	up_write(&mm->mmap_sem);
+	return ret;
+
+free_vma:
+	kmem_cache_free(vm_area_cachep, vma);
+	return ret;
+}
+
+const char *arch_vma_name(struct vm_area_struct *vma)
+{
+	if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso)
+		return "[vdso]";
+	return NULL;
+}
+
+struct vm_area_struct *get_gate_vma(struct task_struct *tsk)
+{
+	return NULL;
+}
+
+int in_gate_area(struct task_struct *task, unsigned long addr)
+{
+	return 0;
+}
+
+int in_gate_area_no_task(unsigned long addr)
+{
+	return 0;
+}
diff --git a/arch/i386/kernel/vsyscall-sysenter.S b/arch/i386/kernel/vsyscall-sysenter.S
index 3b62baa6a37..1a36d26e15e 100644
--- a/arch/i386/kernel/vsyscall-sysenter.S
+++ b/arch/i386/kernel/vsyscall-sysenter.S
@@ -42,10 +42,10 @@ __kernel_vsyscall:
 	/* 7: align return point with nop's to make disassembly easier */
 	.space 7,0x90
 
-	/* 14: System call restart point is here! (SYSENTER_RETURN - 2) */
+	/* 14: System call restart point is here! (SYSENTER_RETURN-2) */
 	jmp .Lenter_kernel
 	/* 16: System call normal return point is here! */
-	.globl SYSENTER_RETURN	/* Symbol used by entry.S.  */
+	.globl SYSENTER_RETURN	/* Symbol used by sysenter.c  */
 SYSENTER_RETURN:
 	pop %ebp
 .Lpop_ebp:
diff --git a/arch/i386/kernel/vsyscall.lds.S b/arch/i386/kernel/vsyscall.lds.S
index 98699ca6e52..e26975fc68b 100644
--- a/arch/i386/kernel/vsyscall.lds.S
+++ b/arch/i386/kernel/vsyscall.lds.S
@@ -7,7 +7,7 @@
 
 SECTIONS
 {
-  . = VSYSCALL_BASE + SIZEOF_HEADERS;
+  . = VDSO_PRELINK + SIZEOF_HEADERS;
 
   .hash           : { *(.hash) }		:text
   .dynsym         : { *(.dynsym) }
@@ -20,7 +20,7 @@ SECTIONS
      For the layouts to match, we need to skip more than enough
      space for the dynamic symbol table et al.  If this amount
      is insufficient, ld -shared will barf.  Just increase it here.  */
-  . = VSYSCALL_BASE + 0x400;
+  . = VDSO_PRELINK + 0x400;
 
   .text           : { *(.text) }		:text =0x90909090
   .note		  : { *(.note.*) }		:text :note
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 0137ec4c136..0a163a4f776 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -122,6 +122,11 @@ struct mem_size_stats
 	unsigned long private_dirty;
 };
 
+__attribute__((weak)) const char *arch_vma_name(struct vm_area_struct *vma)
+{
+	return NULL;
+}
+
 static int show_map_internal(struct seq_file *m, void *v, struct mem_size_stats *mss)
 {
 	struct proc_maps_private *priv = m->private;
@@ -158,22 +163,23 @@ static int show_map_internal(struct seq_file *m, void *v, struct mem_size_stats
 		pad_len_spaces(m, len);
 		seq_path(m, file->f_vfsmnt, file->f_dentry, "\n");
 	} else {
-		if (mm) {
-			if (vma->vm_start <= mm->start_brk &&
+		const char *name = arch_vma_name(vma);
+		if (!name) {
+			if (mm) {
+				if (vma->vm_start <= mm->start_brk &&
 						vma->vm_end >= mm->brk) {
-				pad_len_spaces(m, len);
-				seq_puts(m, "[heap]");
-			} else {
-				if (vma->vm_start <= mm->start_stack &&
-					vma->vm_end >= mm->start_stack) {
-
-					pad_len_spaces(m, len);
-					seq_puts(m, "[stack]");
+					name = "[heap]";
+				} else if (vma->vm_start <= mm->start_stack &&
+					   vma->vm_end >= mm->start_stack) {
+					name = "[stack]";
 				}
+			} else {
+				name = "[vdso]";
 			}
-		} else {
+		}
+		if (name) {
 			pad_len_spaces(m, len);
-			seq_puts(m, "[vdso]");
+			seq_puts(m, name);
 		}
 	}
 	seq_putc(m, '\n');
diff --git a/include/asm-i386/elf.h b/include/asm-i386/elf.h
index 4153d80e4d2..1eac92cb5b1 100644
--- a/include/asm-i386/elf.h
+++ b/include/asm-i386/elf.h
@@ -10,6 +10,7 @@
 #include <asm/processor.h>
 #include <asm/system.h>		/* for savesegment */
 #include <asm/auxvec.h>
+#include <asm/desc.h>
 
 #include <linux/utsname.h>
 
@@ -129,15 +130,41 @@ extern int dump_task_extended_fpu (struct task_struct *, struct user_fxsr_struct
 #define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
 #define ELF_CORE_COPY_XFPREGS(tsk, elf_xfpregs) dump_task_extended_fpu(tsk, elf_xfpregs)
 
-#define VSYSCALL_BASE	(__fix_to_virt(FIX_VSYSCALL))
-#define VSYSCALL_EHDR	((const struct elfhdr *) VSYSCALL_BASE)
-#define VSYSCALL_ENTRY	((unsigned long) &__kernel_vsyscall)
+#define VDSO_HIGH_BASE		(__fix_to_virt(FIX_VDSO))
+#define VDSO_BASE		((unsigned long)current->mm->context.vdso)
+
+#ifdef CONFIG_COMPAT_VDSO
+# define VDSO_COMPAT_BASE	VDSO_HIGH_BASE
+# define VDSO_PRELINK		VDSO_HIGH_BASE
+#else
+# define VDSO_COMPAT_BASE	VDSO_BASE
+# define VDSO_PRELINK		0
+#endif
+
+#define VDSO_COMPAT_SYM(x) \
+		(VDSO_COMPAT_BASE + (unsigned long)(x) - VDSO_PRELINK)
+
+#define VDSO_SYM(x) \
+		(VDSO_BASE + (unsigned long)(x) - VDSO_PRELINK)
+
+#define VDSO_HIGH_EHDR		((const struct elfhdr *) VDSO_HIGH_BASE)
+#define VDSO_EHDR		((const struct elfhdr *) VDSO_COMPAT_BASE)
+
 extern void __kernel_vsyscall;
 
+#define VDSO_ENTRY		VDSO_SYM(&__kernel_vsyscall)
+
+#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
+struct linux_binprm;
+extern int arch_setup_additional_pages(struct linux_binprm *bprm,
+                                       int executable_stack);
+
+extern unsigned int vdso_enabled;
+
 #define ARCH_DLINFO						\
-do {								\
-		NEW_AUX_ENT(AT_SYSINFO,	VSYSCALL_ENTRY);	\
-		NEW_AUX_ENT(AT_SYSINFO_EHDR, VSYSCALL_BASE);	\
+do if (vdso_enabled) {						\
+		NEW_AUX_ENT(AT_SYSINFO,	VDSO_ENTRY);		\
+		NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_COMPAT_BASE);	\
 } while (0)
 
 /*
@@ -148,15 +175,15 @@ do {								\
  * Dumping its extra ELF program headers includes all the other information
  * a debugger needs to easily find how the vsyscall DSO was being used.
  */
-#define ELF_CORE_EXTRA_PHDRS		(VSYSCALL_EHDR->e_phnum)
+#define ELF_CORE_EXTRA_PHDRS		(VDSO_HIGH_EHDR->e_phnum)
 #define ELF_CORE_WRITE_EXTRA_PHDRS					      \
 do {									      \
 	const struct elf_phdr *const vsyscall_phdrs =			      \
-		(const struct elf_phdr *) (VSYSCALL_BASE		      \
-					   + VSYSCALL_EHDR->e_phoff);	      \
+		(const struct elf_phdr *) (VDSO_HIGH_BASE		      \
+					   + VDSO_HIGH_EHDR->e_phoff);    \
 	int i;								      \
 	Elf32_Off ofs = 0;						      \
-	for (i = 0; i < VSYSCALL_EHDR->e_phnum; ++i) {			      \
+	for (i = 0; i < VDSO_HIGH_EHDR->e_phnum; ++i) {		      \
 		struct elf_phdr phdr = vsyscall_phdrs[i];		      \
 		if (phdr.p_type == PT_LOAD) {				      \
 			BUG_ON(ofs != 0);				      \
@@ -174,10 +201,10 @@ do {									      \
 #define ELF_CORE_WRITE_EXTRA_DATA					      \
 do {									      \
 	const struct elf_phdr *const vsyscall_phdrs =			      \
-		(const struct elf_phdr *) (VSYSCALL_BASE		      \
-					   + VSYSCALL_EHDR->e_phoff);	      \
+		(const struct elf_phdr *) (VDSO_HIGH_BASE		      \
+					   + VDSO_HIGH_EHDR->e_phoff);    \
 	int i;								      \
-	for (i = 0; i < VSYSCALL_EHDR->e_phnum; ++i) {			      \
+	for (i = 0; i < VDSO_HIGH_EHDR->e_phnum; ++i) {		      \
 		if (vsyscall_phdrs[i].p_type == PT_LOAD)		      \
 			DUMP_WRITE((void *) vsyscall_phdrs[i].p_vaddr,	      \
 				   PAGE_ALIGN(vsyscall_phdrs[i].p_memsz));    \
diff --git a/include/asm-i386/fixmap.h b/include/asm-i386/fixmap.h
index f7e068f4d2f..a48cc3f7ccc 100644
--- a/include/asm-i386/fixmap.h
+++ b/include/asm-i386/fixmap.h
@@ -51,7 +51,7 @@
  */
 enum fixed_addresses {
 	FIX_HOLE,
-	FIX_VSYSCALL,
+	FIX_VDSO,
 #ifdef CONFIG_X86_LOCAL_APIC
 	FIX_APIC_BASE,	/* local (CPU) APIC) -- required for SMP or not */
 #endif
@@ -115,14 +115,6 @@ extern void __set_fixmap (enum fixed_addresses idx,
 #define __fix_to_virt(x)	(FIXADDR_TOP - ((x) << PAGE_SHIFT))
 #define __virt_to_fix(x)	((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT)
 
-/*
- * This is the range that is readable by user mode, and things
- * acting like user mode such as get_user_pages.
- */
-#define FIXADDR_USER_START	(__fix_to_virt(FIX_VSYSCALL))
-#define FIXADDR_USER_END	(FIXADDR_USER_START + PAGE_SIZE)
-
-
 extern void __this_fixmap_does_not_exist(void);
 
 /*
diff --git a/include/asm-i386/mmu.h b/include/asm-i386/mmu.h
index f431a0b86d4..8358dd3df7a 100644
--- a/include/asm-i386/mmu.h
+++ b/include/asm-i386/mmu.h
@@ -12,6 +12,7 @@ typedef struct {
 	int size;
 	struct semaphore sem;
 	void *ldt;
+	void *vdso;
 } mm_context_t;
 
 #endif
diff --git a/include/asm-i386/page.h b/include/asm-i386/page.h
index e3a552fa553..f5bf544c729 100644
--- a/include/asm-i386/page.h
+++ b/include/asm-i386/page.h
@@ -96,6 +96,8 @@ typedef struct { unsigned long pgprot; } pgprot_t;
 
 #ifndef __ASSEMBLY__
 
+struct vm_area_struct;
+
 /*
  * This much address space is reserved for vmalloc() and iomap()
  * as well as fixmap mappings.
@@ -139,6 +141,7 @@ extern int page_is_ram(unsigned long pagenr);
 #include <asm-generic/memory_model.h>
 #include <asm-generic/page.h>
 
+#define __HAVE_ARCH_GATE_AREA 1
 #endif /* __KERNEL__ */
 
 #endif /* _I386_PAGE_H */
diff --git a/include/asm-i386/thread_info.h b/include/asm-i386/thread_info.h
index ff1e2b1a7c8..2833fa2c0dd 100644
--- a/include/asm-i386/thread_info.h
+++ b/include/asm-i386/thread_info.h
@@ -37,6 +37,7 @@ struct thread_info {
 					 	   0-0xBFFFFFFF for user-thead
 						   0-0xFFFFFFFF for kernel-thread
 						*/
+	void			*sysenter_return;
 	struct restart_block    restart_block;
 
 	unsigned long           previous_esp;   /* ESP of the previous stack in case
diff --git a/include/asm-i386/unwind.h b/include/asm-i386/unwind.h
index d480f2e3821..69f0f1df672 100644
--- a/include/asm-i386/unwind.h
+++ b/include/asm-i386/unwind.h
@@ -78,8 +78,8 @@ static inline int arch_unw_user_mode(const struct unwind_frame_info *info)
 	return user_mode_vm(&info->regs);
 #else
 	return info->regs.eip < PAGE_OFFSET
-	       || (info->regs.eip >= __fix_to_virt(FIX_VSYSCALL)
-	            && info->regs.eip < __fix_to_virt(FIX_VSYSCALL) + PAGE_SIZE)
+	       || (info->regs.eip >= __fix_to_virt(FIX_VDSO)
+	            && info->regs.eip < __fix_to_virt(FIX_VDSO) + PAGE_SIZE)
 	       || info->regs.esp < PAGE_OFFSET;
 #endif
 }
diff --git a/include/linux/mm.h b/include/linux/mm.h
index a929ea197e4..ff1fa87df8d 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1065,5 +1065,7 @@ void drop_slab(void);
 extern int randomize_va_space;
 #endif
 
+const char *arch_vma_name(struct vm_area_struct *vma);
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_MM_H */
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 349ef908a22..bee12a7a057 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -189,6 +189,7 @@ enum
 	VM_ZONE_RECLAIM_MODE=31, /* reclaim local zone memory before going off node */
 	VM_ZONE_RECLAIM_INTERVAL=32, /* time period to wait after reclaim failure */
 	VM_PANIC_ON_OOM=33,	/* panic at out-of-memory */
+	VM_VDSO_ENABLED=34,	/* map VDSO into new processes? */
 };
 
 
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index f1a4eb1a655..f54afed8426 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -927,6 +927,18 @@ static ctl_table vm_table[] = {
 		.proc_handler	= &proc_dointvec_jiffies,
 		.strategy	= &sysctl_jiffies,
 	},
+#endif
+#ifdef CONFIG_X86_32
+	{
+		.ctl_name	= VM_VDSO_ENABLED,
+		.procname	= "vdso_enabled",
+		.data		= &vdso_enabled,
+		.maxlen		= sizeof(vdso_enabled),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec,
+		.strategy	= &sysctl_intvec,
+		.extra1		= &zero,
+	},
 #endif
 	{ .ctl_name = 0 }
 };
-- 
cgit v1.2.3-70-g09d2


From c9cf55285e87ac423c45d9efca750d3f50234d10 Mon Sep 17 00:00:00 2001
From: Randy Dunlap <rdunlap@xenotime.net>
Date: Tue, 27 Jun 2006 02:53:52 -0700
Subject: [PATCH] add poison.h and patch primary users

Localize poison values into one header file for better documentation and
easier/quicker debugging and so that the same values won't be used for
multiple purposes.

Use these constants in core arch., mm, driver, and fs code.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Matt Mackall <mpm@selenic.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/mm/init.c       |  3 ++-
 arch/powerpc/mm/init_64.c |  3 ++-
 arch/sparc64/mm/init.c    |  3 ++-
 arch/x86_64/mm/init.c     |  7 +++++--
 drivers/base/dmapool.c    |  3 +--
 fs/jbd/journal.c          |  3 ++-
 include/linux/list.h      |  9 +--------
 include/linux/poison.h    | 45 +++++++++++++++++++++++++++++++++++++++++++++
 mm/slab.c                 | 12 +-----------
 9 files changed, 61 insertions(+), 27 deletions(-)
 create mode 100644 include/linux/poison.h

(limited to 'arch/i386')

diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c
index 46859253179..f84b16e007f 100644
--- a/arch/i386/mm/init.c
+++ b/arch/i386/mm/init.c
@@ -23,6 +23,7 @@
 #include <linux/init.h>
 #include <linux/highmem.h>
 #include <linux/pagemap.h>
+#include <linux/poison.h>
 #include <linux/bootmem.h>
 #include <linux/slab.h>
 #include <linux/proc_fs.h>
@@ -753,7 +754,7 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
 	for (addr = begin; addr < end; addr += PAGE_SIZE) {
 		ClearPageReserved(virt_to_page(addr));
 		init_page_count(virt_to_page(addr));
-		memset((void *)addr, 0xcc, PAGE_SIZE);
+		memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
 		free_page(addr);
 		totalram_pages++;
 	}
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 9e30f968c18..d454caada26 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -41,6 +41,7 @@
 #include <linux/idr.h>
 #include <linux/nodemask.h>
 #include <linux/module.h>
+#include <linux/poison.h>
 
 #include <asm/pgalloc.h>
 #include <asm/page.h>
@@ -90,7 +91,7 @@ void free_initmem(void)
 
 	addr = (unsigned long)__init_begin;
 	for (; addr < (unsigned long)__init_end; addr += PAGE_SIZE) {
-		memset((void *)addr, 0xcc, PAGE_SIZE);
+		memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
 		ClearPageReserved(virt_to_page(addr));
 		init_page_count(virt_to_page(addr));
 		free_page(addr);
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 5c2bcf354ce..cb75a27adb5 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -18,6 +18,7 @@
 #include <linux/initrd.h>
 #include <linux/swap.h>
 #include <linux/pagemap.h>
+#include <linux/poison.h>
 #include <linux/fs.h>
 #include <linux/seq_file.h>
 #include <linux/kprobes.h>
@@ -1520,7 +1521,7 @@ void free_initmem(void)
 		page = (addr +
 			((unsigned long) __va(kern_base)) -
 			((unsigned long) KERNBASE));
-		memset((void *)addr, 0xcc, PAGE_SIZE);
+		memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
 		p = virt_to_page(page);
 
 		ClearPageReserved(p);
diff --git a/arch/x86_64/mm/init.c b/arch/x86_64/mm/init.c
index 51fbf3eddf1..95bd232ff0c 100644
--- a/arch/x86_64/mm/init.c
+++ b/arch/x86_64/mm/init.c
@@ -23,6 +23,7 @@
 #include <linux/bootmem.h>
 #include <linux/proc_fs.h>
 #include <linux/pci.h>
+#include <linux/poison.h>
 #include <linux/dma-mapping.h>
 #include <linux/module.h>
 #include <linux/memory_hotplug.h>
@@ -660,7 +661,8 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
 	for (addr = begin; addr < end; addr += PAGE_SIZE) {
 		ClearPageReserved(virt_to_page(addr));
 		init_page_count(virt_to_page(addr));
-		memset((void *)(addr & ~(PAGE_SIZE-1)), 0xcc, PAGE_SIZE); 
+		memset((void *)(addr & ~(PAGE_SIZE-1)),
+			POISON_FREE_INITMEM, PAGE_SIZE);
 		free_page(addr);
 		totalram_pages++;
 	}
@@ -668,7 +670,8 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
 
 void free_initmem(void)
 {
-	memset(__initdata_begin, 0xba, __initdata_end - __initdata_begin);
+	memset(__initdata_begin, POISON_FREE_INITDATA,
+		__initdata_end - __initdata_begin);
 	free_init_pages("unused kernel memory",
 			(unsigned long)(&__init_begin),
 			(unsigned long)(&__init_end));
diff --git a/drivers/base/dmapool.c b/drivers/base/dmapool.c
index e2f64f91ed0..33c5cce1560 100644
--- a/drivers/base/dmapool.c
+++ b/drivers/base/dmapool.c
@@ -7,6 +7,7 @@
 #include <linux/dmapool.h>
 #include <linux/slab.h>
 #include <linux/module.h>
+#include <linux/poison.h>
 
 /*
  * Pool allocator ... wraps the dma_alloc_coherent page allocator, so
@@ -35,8 +36,6 @@ struct dma_page {	/* cacheable header for 'allocation' bytes */
 };
 
 #define	POOL_TIMEOUT_JIFFIES	((100 /* msec */ * HZ) / 1000)
-#define	POOL_POISON_FREED	0xa7	/* !inuse */
-#define	POOL_POISON_ALLOCATED	0xa9	/* !initted */
 
 static DECLARE_MUTEX (pools_lock);
 
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
index 7f96b5cb678..8c9b28dff11 100644
--- a/fs/jbd/journal.c
+++ b/fs/jbd/journal.c
@@ -34,6 +34,7 @@
 #include <linux/suspend.h>
 #include <linux/pagemap.h>
 #include <linux/kthread.h>
+#include <linux/poison.h>
 #include <linux/proc_fs.h>
 
 #include <asm/uaccess.h>
@@ -1675,7 +1676,7 @@ static void journal_free_journal_head(struct journal_head *jh)
 {
 #ifdef CONFIG_JBD_DEBUG
 	atomic_dec(&nr_journal_heads);
-	memset(jh, 0x5b, sizeof(*jh));
+	memset(jh, JBD_POISON_FREE, sizeof(*jh));
 #endif
 	kmem_cache_free(journal_head_cache, jh);
 }
diff --git a/include/linux/list.h b/include/linux/list.h
index 37ca31b21bb..6b74adf5297 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -4,17 +4,10 @@
 #ifdef __KERNEL__
 
 #include <linux/stddef.h>
+#include <linux/poison.h>
 #include <linux/prefetch.h>
 #include <asm/system.h>
 
-/*
- * These are non-NULL pointers that will result in page faults
- * under normal circumstances, used to verify that nobody uses
- * non-initialized list entries.
- */
-#define LIST_POISON1  ((void *) 0x00100100)
-#define LIST_POISON2  ((void *) 0x00200200)
-
 /*
  * Simple doubly linked list implementation.
  *
diff --git a/include/linux/poison.h b/include/linux/poison.h
new file mode 100644
index 00000000000..d536de7dd82
--- /dev/null
+++ b/include/linux/poison.h
@@ -0,0 +1,45 @@
+#ifndef _LINUX_POISON_H
+#define _LINUX_POISON_H
+
+/********** include/linux/list.h **********/
+/*
+ * These are non-NULL pointers that will result in page faults
+ * under normal circumstances, used to verify that nobody uses
+ * non-initialized list entries.
+ */
+#define LIST_POISON1  ((void *) 0x00100100)
+#define LIST_POISON2  ((void *) 0x00200200)
+
+/********** mm/slab.c **********/
+/*
+ * Magic nums for obj red zoning.
+ * Placed in the first word before and the first word after an obj.
+ */
+#define	RED_INACTIVE	0x5A2CF071UL	/* when obj is inactive */
+#define	RED_ACTIVE	0x170FC2A5UL	/* when obj is active */
+
+/* ...and for poisoning */
+#define	POISON_INUSE	0x5a	/* for use-uninitialised poisoning */
+#define POISON_FREE	0x6b	/* for use-after-free poisoning */
+#define	POISON_END	0xa5	/* end-byte of poisoning */
+
+/********** arch/$ARCH/mm/init.c **********/
+#define POISON_FREE_INITMEM	0xcc
+
+/********** arch/x86_64/mm/init.c **********/
+#define	POISON_FREE_INITDATA	0xba
+
+/********** arch/ia64/hp/common/sba_iommu.c **********/
+/*
+ * arch/ia64/hp/common/sba_iommu.c uses a 16-byte poison string with a
+ * value of "SBAIOMMU POISON\0" for spill-over poisoning.
+ */
+
+/********** fs/jbd/journal.c **********/
+#define JBD_POISON_FREE	0x5b
+
+/********** drivers/base/dmapool.c **********/
+#define	POOL_POISON_FREED	0xa7	/* !inuse */
+#define	POOL_POISON_ALLOCATED	0xa9	/* !initted */
+
+#endif
diff --git a/mm/slab.c b/mm/slab.c
index 98ac20bc0de..47982c2d9f3 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -89,6 +89,7 @@
 #include	<linux/config.h>
 #include	<linux/slab.h>
 #include	<linux/mm.h>
+#include	<linux/poison.h>
 #include	<linux/swap.h>
 #include	<linux/cache.h>
 #include	<linux/interrupt.h>
@@ -492,17 +493,6 @@ struct kmem_cache {
 #endif
 
 #if DEBUG
-/*
- * Magic nums for obj red zoning.
- * Placed in the first word before and the first word after an obj.
- */
-#define	RED_INACTIVE	0x5A2CF071UL	/* when obj is inactive */
-#define	RED_ACTIVE	0x170FC2A5UL	/* when obj is active */
-
-/* ...and for poisoning */
-#define	POISON_INUSE	0x5a	/* for use-uninitialised poisoning */
-#define POISON_FREE	0x6b	/* for use-after-free poisoning */
-#define	POISON_END	0xa5	/* end-byte of poisoning */
 
 /*
  * memory layout of objects:
-- 
cgit v1.2.3-70-g09d2


From 9c7b216d23e820e0e148d5be01bbb5bd2d8378fe Mon Sep 17 00:00:00 2001
From: Chandra Seetharaman <sekharan@us.ibm.com>
Date: Tue, 27 Jun 2006 02:54:07 -0700
Subject: [PATCH] cpu hotplug: revert init patch submitted for 2.6.17

In 2.6.17, there was a problem with cpu_notifiers and XFS.  I provided a
band-aid solution to solve that problem.  In the process, i undid all the
changes you both were making to ensure that these notifiers were available
only at init time (unless CONFIG_HOTPLUG_CPU is defined).

We deferred the real fix to 2.6.18.  Here is a set of patches that fixes the
XFS problem cleanly and makes the cpu notifiers available only at init time
(unless CONFIG_HOTPLUG_CPU is defined).

If CONFIG_HOTPLUG_CPU is defined then cpu notifiers are available at run
time.

This patch reverts the notifier_call changes made in 2.6.17

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/cpu/intel_cacheinfo.c | 2 +-
 arch/ia64/kernel/palinfo.c             | 2 +-
 arch/ia64/kernel/salinfo.c             | 2 +-
 arch/ia64/kernel/topology.c            | 2 +-
 arch/powerpc/kernel/sysfs.c            | 2 +-
 arch/x86_64/kernel/mce.c               | 2 +-
 drivers/base/topology.c                | 2 +-
 drivers/cpufreq/cpufreq.c              | 2 +-
 kernel/hrtimer.c                       | 2 +-
 kernel/profile.c                       | 2 +-
 kernel/rcupdate.c                      | 2 +-
 kernel/softirq.c                       | 2 +-
 kernel/softlockup.c                    | 2 +-
 kernel/timer.c                         | 2 +-
 kernel/workqueue.c                     | 2 +-
 mm/page_alloc.c                        | 2 +-
 mm/slab.c                              | 2 +-
 mm/vmscan.c                            | 2 +-
 18 files changed, 18 insertions(+), 18 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/cpu/intel_cacheinfo.c b/arch/i386/kernel/cpu/intel_cacheinfo.c
index 8a92642ea59..1d4ab104798 100644
--- a/arch/i386/kernel/cpu/intel_cacheinfo.c
+++ b/arch/i386/kernel/cpu/intel_cacheinfo.c
@@ -729,7 +729,7 @@ static void __cpuexit cache_remove_dev(struct sys_device * sys_dev)
 	return;
 }
 
-static int cacheinfo_cpu_callback(struct notifier_block *nfb,
+static int __cpuinit cacheinfo_cpu_callback(struct notifier_block *nfb,
 					unsigned long action, void *hcpu)
 {
 	unsigned int cpu = (unsigned long)hcpu;
diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c
index 859fb37ff49..6386f63c413 100644
--- a/arch/ia64/kernel/palinfo.c
+++ b/arch/ia64/kernel/palinfo.c
@@ -959,7 +959,7 @@ remove_palinfo_proc_entries(unsigned int hcpu)
 	}
 }
 
-static int palinfo_cpu_callback(struct notifier_block *nfb,
+static int __devinit palinfo_cpu_callback(struct notifier_block *nfb,
 								unsigned long action,
 								void *hcpu)
 {
diff --git a/arch/ia64/kernel/salinfo.c b/arch/ia64/kernel/salinfo.c
index 663a186ad19..9d5a823479a 100644
--- a/arch/ia64/kernel/salinfo.c
+++ b/arch/ia64/kernel/salinfo.c
@@ -572,7 +572,7 @@ static struct file_operations salinfo_data_fops = {
 };
 
 #ifdef	CONFIG_HOTPLUG_CPU
-static int
+static int __devinit
 salinfo_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu)
 {
 	unsigned int i, cpu = (unsigned long)hcpu;
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index 5737c9a061e..f07c382b57b 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -404,7 +404,7 @@ static int __cpuinit cache_remove_dev(struct sys_device * sys_dev)
  * When a cpu is hot-plugged, do a check and initiate
  * cache kobject if necessary
  */
-static int cache_cpu_callback(struct notifier_block *nfb,
+static int __cpuinit cache_cpu_callback(struct notifier_block *nfb,
 		unsigned long action, void *hcpu)
 {
 	unsigned int cpu = (unsigned long)hcpu;
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 412ad00e222..0231869613c 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -279,7 +279,7 @@ static void unregister_cpu_online(unsigned int cpu)
 }
 #endif /* CONFIG_HOTPLUG_CPU */
 
-static int sysfs_cpu_notify(struct notifier_block *self,
+static int __devinit sysfs_cpu_notify(struct notifier_block *self,
 				      unsigned long action, void *hcpu)
 {
 	unsigned int cpu = (unsigned int)(long)hcpu;
diff --git a/arch/x86_64/kernel/mce.c b/arch/x86_64/kernel/mce.c
index acd5816b1a6..efe8500a5b9 100644
--- a/arch/x86_64/kernel/mce.c
+++ b/arch/x86_64/kernel/mce.c
@@ -629,7 +629,7 @@ static __cpuinit void mce_remove_device(unsigned int cpu)
 #endif
 
 /* Get notified when a cpu comes on/off. Be hotplug friendly. */
-static int
+static __cpuinit int
 mce_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
 {
 	unsigned int cpu = (unsigned long)hcpu;
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index 8c52421cbc5..915810f6237 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -107,7 +107,7 @@ static int __cpuinit topology_remove_dev(struct sys_device * sys_dev)
 	return 0;
 }
 
-static int topology_cpu_callback(struct notifier_block *nfb,
+static int __cpuinit topology_cpu_callback(struct notifier_block *nfb,
 		unsigned long action, void *hcpu)
 {
 	unsigned int cpu = (unsigned long)hcpu;
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 44d1eca83a7..486ef666470 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1497,7 +1497,7 @@ int cpufreq_update_policy(unsigned int cpu)
 }
 EXPORT_SYMBOL(cpufreq_update_policy);
 
-static int cpufreq_cpu_callback(struct notifier_block *nfb,
+static int __cpuinit cpufreq_cpu_callback(struct notifier_block *nfb,
 					unsigned long action, void *hcpu)
 {
 	unsigned int cpu = (unsigned long)hcpu;
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 55601b3ce60..f9f53191661 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -833,7 +833,7 @@ static void migrate_hrtimers(int cpu)
 }
 #endif /* CONFIG_HOTPLUG_CPU */
 
-static int hrtimer_cpu_notify(struct notifier_block *self,
+static int __devinit hrtimer_cpu_notify(struct notifier_block *self,
 					unsigned long action, void *hcpu)
 {
 	long cpu = (long)hcpu;
diff --git a/kernel/profile.c b/kernel/profile.c
index 68afe121e50..5a730fdb1a2 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -299,7 +299,7 @@ out:
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
-static int profile_cpu_callback(struct notifier_block *info,
+static int __devinit profile_cpu_callback(struct notifier_block *info,
 					unsigned long action, void *__cpu)
 {
 	int node, cpu = (unsigned long)__cpu;
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c
index c0e1cb95dd4..a8d80b7048b 100644
--- a/kernel/rcupdate.c
+++ b/kernel/rcupdate.c
@@ -548,7 +548,7 @@ static void __devinit rcu_online_cpu(int cpu)
 	tasklet_init(&per_cpu(rcu_tasklet, cpu), rcu_process_callbacks, 0UL);
 }
 
-static int rcu_cpu_notify(struct notifier_block *self,
+static int __devinit rcu_cpu_notify(struct notifier_block *self,
 				unsigned long action, void *hcpu)
 {
 	long cpu = (long)hcpu;
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 9e2f1c6e73d..db65a311f14 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -446,7 +446,7 @@ static void takeover_tasklets(unsigned int cpu)
 }
 #endif /* CONFIG_HOTPLUG_CPU */
 
-static int cpu_callback(struct notifier_block *nfb,
+static int __devinit cpu_callback(struct notifier_block *nfb,
 				  unsigned long action,
 				  void *hcpu)
 {
diff --git a/kernel/softlockup.c b/kernel/softlockup.c
index b5c3b94e01c..29da0a847ba 100644
--- a/kernel/softlockup.c
+++ b/kernel/softlockup.c
@@ -104,7 +104,7 @@ static int watchdog(void * __bind_cpu)
 /*
  * Create/destroy watchdog threads as CPUs come and go:
  */
-static int
+static int __devinit
 cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
 {
 	int hotcpu = (unsigned long)hcpu;
diff --git a/kernel/timer.c b/kernel/timer.c
index 5bb6b7976ee..878194ec8bd 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1652,7 +1652,7 @@ static void __devinit migrate_timers(int cpu)
 }
 #endif /* CONFIG_HOTPLUG_CPU */
 
-static int timer_cpu_notify(struct notifier_block *self,
+static int __devinit timer_cpu_notify(struct notifier_block *self,
 				unsigned long action, void *hcpu)
 {
 	long cpu = (long)hcpu;
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 565cf7a1feb..59f0b42bd89 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -559,7 +559,7 @@ static void take_over_work(struct workqueue_struct *wq, unsigned int cpu)
 }
 
 /* We're holding the cpucontrol mutex here */
-static int workqueue_cpu_callback(struct notifier_block *nfb,
+static int __devinit workqueue_cpu_callback(struct notifier_block *nfb,
 				  unsigned long action,
 				  void *hcpu)
 {
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 9f86191bb63..e9fb2d4064c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2009,7 +2009,7 @@ static inline void free_zone_pagesets(int cpu)
 	}
 }
 
-static int pageset_cpuup_callback(struct notifier_block *nfb,
+static int __cpuinit pageset_cpuup_callback(struct notifier_block *nfb,
 		unsigned long action,
 		void *hcpu)
 {
diff --git a/mm/slab.c b/mm/slab.c
index 47982c2d9f3..631c0feb964 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1073,7 +1073,7 @@ static inline int cache_free_alien(struct kmem_cache *cachep, void *objp)
 
 #endif
 
-static int cpuup_callback(struct notifier_block *nfb,
+static int __devinit cpuup_callback(struct notifier_block *nfb,
 				    unsigned long action, void *hcpu)
 {
 	long cpu = (long)hcpu;
diff --git a/mm/vmscan.c b/mm/vmscan.c
index f03da33d914..eeacb0d695c 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1450,7 +1450,7 @@ out:
    not required for correctness.  So if the last cpu in a node goes
    away, we get changed to run anywhere: as the first one comes back,
    restore their cpu bindings. */
-static int cpu_callback(struct notifier_block *nfb,
+static int __devinit cpu_callback(struct notifier_block *nfb,
 				  unsigned long action, void *hcpu)
 {
 	pg_data_t *pgdat;
-- 
cgit v1.2.3-70-g09d2


From 74b85f3790aa2550c617fe14439482e13e615fa0 Mon Sep 17 00:00:00 2001
From: Chandra Seetharaman <sekharan@us.ibm.com>
Date: Tue, 27 Jun 2006 02:54:09 -0700
Subject: [PATCH] cpu hotplug: make cpu_notifier related notifier blocks
 __cpuinit only

Make notifier_blocks associated with cpu_notifier as __cpuinitdata.

__cpuinitdata makes sure that the data is init time only unless
CONFIG_HOTPLUG_CPU is defined.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/cpu/intel_cacheinfo.c |  2 +-
 arch/i386/kernel/cpuid.c               |  2 +-
 arch/i386/kernel/msr.c                 |  2 +-
 arch/ia64/kernel/palinfo.c             |  4 ++--
 arch/ia64/kernel/topology.c            |  2 +-
 arch/powerpc/mm/numa.c                 | 11 ++++++-----
 arch/x86_64/kernel/mce.c               |  2 +-
 drivers/base/topology.c                |  2 +-
 drivers/cpufreq/cpufreq.c              |  2 +-
 mm/page-writeback.c                    |  2 +-
 mm/page_alloc.c                        |  2 +-
 mm/slab.c                              |  4 +++-
 12 files changed, 20 insertions(+), 17 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/cpu/intel_cacheinfo.c b/arch/i386/kernel/cpu/intel_cacheinfo.c
index 1d4ab104798..e9f0b928b0a 100644
--- a/arch/i386/kernel/cpu/intel_cacheinfo.c
+++ b/arch/i386/kernel/cpu/intel_cacheinfo.c
@@ -747,7 +747,7 @@ static int __cpuinit cacheinfo_cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block cacheinfo_cpu_notifier =
+static struct notifier_block __cpuinitdata cacheinfo_cpu_notifier =
 {
     .notifier_call = cacheinfo_cpu_callback,
 };
diff --git a/arch/i386/kernel/cpuid.c b/arch/i386/kernel/cpuid.c
index 1d9a4abcdfc..f6dfa9fb675 100644
--- a/arch/i386/kernel/cpuid.c
+++ b/arch/i386/kernel/cpuid.c
@@ -183,7 +183,7 @@ static int cpuid_class_cpu_callback(struct notifier_block *nfb, unsigned long ac
 	return NOTIFY_OK;
 }
 
-static struct notifier_block cpuid_class_cpu_notifier =
+static struct notifier_block __cpuinitdata cpuid_class_cpu_notifier =
 {
 	.notifier_call = cpuid_class_cpu_callback,
 };
diff --git a/arch/i386/kernel/msr.c b/arch/i386/kernel/msr.c
index 7a328230e54..d022cb8fd72 100644
--- a/arch/i386/kernel/msr.c
+++ b/arch/i386/kernel/msr.c
@@ -266,7 +266,7 @@ static int msr_class_cpu_callback(struct notifier_block *nfb, unsigned long acti
 	return NOTIFY_OK;
 }
 
-static struct notifier_block msr_class_cpu_notifier =
+static struct notifier_block __cpuinitdata msr_class_cpu_notifier =
 {
 	.notifier_call = msr_class_cpu_callback,
 };
diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c
index 6386f63c413..303a9afcf2a 100644
--- a/arch/ia64/kernel/palinfo.c
+++ b/arch/ia64/kernel/palinfo.c
@@ -959,7 +959,7 @@ remove_palinfo_proc_entries(unsigned int hcpu)
 	}
 }
 
-static int __devinit palinfo_cpu_callback(struct notifier_block *nfb,
+static int __cpuinit palinfo_cpu_callback(struct notifier_block *nfb,
 								unsigned long action,
 								void *hcpu)
 {
@@ -978,7 +978,7 @@ static int __devinit palinfo_cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block palinfo_cpu_notifier =
+static struct notifier_block __cpuinitdata palinfo_cpu_notifier =
 {
 	.notifier_call = palinfo_cpu_callback,
 	.priority = 0,
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index f07c382b57b..5511d9c6c70 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -422,7 +422,7 @@ static int __cpuinit cache_cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block cache_cpu_notifier =
+static struct notifier_block __cpuinitdata cache_cpu_notifier =
 {
 	.notifier_call = cache_cpu_callback
 };
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index aa98cb3b59d..fbe23933f73 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -334,7 +334,7 @@ out:
 	return nid;
 }
 
-static int cpu_numa_callback(struct notifier_block *nfb,
+static int __cpuinit cpu_numa_callback(struct notifier_block *nfb,
 			     unsigned long action,
 			     void *hcpu)
 {
@@ -609,14 +609,15 @@ static void __init *careful_allocation(int nid, unsigned long size,
 	return (void *)ret;
 }
 
+static struct notifier_block __cpuinitdata ppc64_numa_nb = {
+	.notifier_call = cpu_numa_callback,
+	.priority = 1 /* Must run before sched domains notifier. */
+};
+
 void __init do_init_bootmem(void)
 {
 	int nid;
 	unsigned int i;
-	static struct notifier_block ppc64_numa_nb = {
-		.notifier_call = cpu_numa_callback,
-		.priority = 1 /* Must run before sched domains notifier. */
-	};
 
 	min_low_pfn = 0;
 	max_low_pfn = lmb_end_of_DRAM() >> PAGE_SHIFT;
diff --git a/arch/x86_64/kernel/mce.c b/arch/x86_64/kernel/mce.c
index efe8500a5b9..88845674c66 100644
--- a/arch/x86_64/kernel/mce.c
+++ b/arch/x86_64/kernel/mce.c
@@ -647,7 +647,7 @@ mce_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
 	return NOTIFY_OK;
 }
 
-static struct notifier_block mce_cpu_notifier = {
+static struct notifier_block __cpuinitdata mce_cpu_notifier = {
 	.notifier_call = mce_cpu_callback,
 };
 
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index 915810f6237..c2d62163238 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -125,7 +125,7 @@ static int __cpuinit topology_cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block topology_cpu_notifier =
+static struct notifier_block __cpuinitdata topology_cpu_notifier =
 {
 	.notifier_call = topology_cpu_callback,
 };
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 3533e26f837..35e0b9ceecf 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1533,7 +1533,7 @@ static int cpufreq_cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block cpufreq_cpu_notifier =
+static struct notifier_block __cpuinitdata cpufreq_cpu_notifier =
 {
     .notifier_call = cpufreq_cpu_callback,
 };
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 8ccf6f1b147..8ac6bfb4007 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -523,7 +523,7 @@ ratelimit_handler(struct notifier_block *self, unsigned long u, void *v)
 	return 0;
 }
 
-static struct notifier_block ratelimit_nb = {
+static struct notifier_block __cpuinitdata ratelimit_nb = {
 	.notifier_call	= ratelimit_handler,
 	.next		= NULL,
 };
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e9fb2d4064c..dafd12ec7a0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2031,7 +2031,7 @@ static int __cpuinit pageset_cpuup_callback(struct notifier_block *nfb,
 	return ret;
 }
 
-static struct notifier_block pageset_notifier =
+static struct notifier_block __cpuinitdata pageset_notifier =
 	{ &pageset_cpuup_callback, NULL, 0 };
 
 void __init setup_per_cpu_pageset(void)
diff --git a/mm/slab.c b/mm/slab.c
index 631c0feb964..d1d55279202 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1255,7 +1255,9 @@ bad:
 	return NOTIFY_BAD;
 }
 
-static struct notifier_block cpucache_notifier = { &cpuup_callback, NULL, 0 };
+static struct notifier_block __cpuinitdata cpucache_notifier = {
+	&cpuup_callback, NULL, 0
+};
 
 /*
  * swap the static kmem_list3 with kmalloced memory
-- 
cgit v1.2.3-70-g09d2


From 62c83cde9282a9580994a12b3063e677181b5ebe Mon Sep 17 00:00:00 2001
From: Jim Cromie <jim.cromie@gmail.com>
Date: Tue, 27 Jun 2006 02:54:13 -0700
Subject: [PATCH] chardev: GPIO for SCx200 & PC-8736x: whitespace pre-clean

GPIO SUPPORT FOR SCx200 & PC8736x

The patch-set reworks the 2.4 vintage scx200_gpio driver for modern 2.6, and
refactors GPIO support to reuse it in a new driver for the GPIO on PC-8736x
chips.  Its handy for the Soekris.com net-4801, which has both chips.

These patches have been seen recently on Kernel-Mentors, and then
Kernel-Newbies ML, where Jesper Juhl kindly reviewed it.  His feedback has
been incorporated.  Thanks Jesper !

Its also gone to soekris-tech@soekris.com for possible testing by linux folks,
I've gotten 1 promise so far.  Theyre mostly BSD folk over there, but we'll
see..

Device-file & Sysfs

The driver preserves the existing device-file interface, including the
write/cmd set, but adds v to 'view' the pin-settings & configs by inducing,
via gpio_dump(), a dev_info() call.  Its a fairly crappy way to get status,
but it sticks to the syslog approach, conservatively.

Allowing users to voluntarily trigger logging is good, it gives them a
familiar way to confirm their app's control & use of the pins, and I've thus
reduced the pin-mode-updates from dev_info to dev_dbg.

I've recently bolted on a proto sysfs interface for both new drivers.  Im not
including those patches here; they (the patch + doc-pre-patch) are still quite
raw (and unreviewed on KNML), and since they 'invent' a convention for GPIO, a
proper vetting is needed.  Since this patchset is much bigger than my previous
ones, Id like to keep things simpler, and address it 1st, before bolting on
more stuff.

The driver-split

The Geode CPU and the PC-87366 Super-IO chip have GPIO units which share a
common pin-architecture (same pin features, with same bits controlling), but
with different addressing mechanics and port organizations.

The vintage driver expresses the pin capabilities with pin-mode commands
[OoPpTt],etc that change the pin configurations, and since the 2 chips share
pin-arch, we can reuse the read(), write() commands, once the implementation
is suitably adjusted.

The patchset adds a vtable: struct nsc_gpio_ops, to abstract the existing gpio
operations, then adjusts fileops.write() code to invoke operations via that
vtable.  Driver specific open()s set private_data to the vtable so its
available for use by write().

The vtable gets the gpio_dump() too, since its user-friendly, and (could be
construed as) part of the current device-file interface.  To support use of
dev_dbg() in write() & _dump(), the vtable gets a dev ptr too, set by both
scx200 & pc8736x _gpio drivers.

heres how the pins are presented in syslog:

[ 1890.176223]  scx200_gpio.0: io00: 0x0044 TS OD PUE  EDGE LO DEBOUNCE
[ 1890.287223]  scx200_gpio.0: io01: 0x0003 OE PP PUD  EDGE LO

nsc_gpio.c: new file is new home of several file-ops methods, which are
modified to get their vtable from filp->private_data, and use it where needed.

scx200_gpio.c: keeps some of its existing gpio routines, but now wires them up
via the vtable (they're invoked by nsc_gpio.c:nsc_gpio_write() thru this
vtable).  A driver-spcific open() initializes filp->private_data with the
vtable.

Once the split is clean, and the scx200_gpio driver is working, we copy and
modify the function and variable names, and rework the access-method bodies
for the different addressing scheme.

Heres a working overview of the patchset:

# series file for GPIO

# Spring Cleaning
gpio-scx/patch.preclean        # scripts/Lindent fixes, editor-ctrl comments

# API Modernization

gpio-scx/patch.api26        # what I learned from LDD3
gpio-scx/patch.platform-dev-2    # get pdev, support for dev_dbg()
gpio-scx/patch.unsigned-minor    # fix to match std practice

# Debuggability

gpio-scx/patch.dump-diet    # shrink gpio_dump()
gpio-scx/patch.viewpins        # add new 'command' to call dump()
gpio-scx/patch.init-refactor    # pull shadow-register init to sub

# Access-Abstraction (add vtable)

gpio-scx/patch.access-vtable    # introduce nsg_gpio_ops vtable, w dump
gpio-scx/patch.vtable-calls    # add & use the vtable in scx200_gpio
gpio-scx/patch.nscgpio-shell    # add empty driver for common-fops

# move code under abstraction
gpio-scx/patch.migrate-fops    # move file-ops methods from scx200_gpio
gpio-scx/patch.common-dump    # mv scx200.c:scx200_gpio_dump() to nsc_gpio.c
gpio-scx/patch.add-pc8736x-gpio    # add new driver, like old, w chip adapt
# gpio-scx/patch.add-DEBUG    # enable all dev_dbg()s

# Cleanups

# finish printk -> dev_dbg() etc
gpio-scx/patch.pdev-pc8736x    # new drvr needs pdev too,
gpio-scx/patch.devdbg-nscgpio    # add device to 'vtable', use in dev_dbg()

# gpio-scx/patch.pin-config-view    # another 'c' 'command'
# gpio-scx/quiet-getset        # take out excess dbg stuff (pretty quiet
now)
gpio-scx/patch.shadow-current    # imitate scx200_gpio's shadow regs in
pc87*

# post KMentors-post patches ..

gpio-scx/patch.mutexes        # use mutexes for config-locks
gpio-scx/patch.viewpins-values    # extend dump to obsolete separate 'c' cmd

gpio-scx/patch.kconfig        # add stuff for kbuild

# TBC
# combine api26 with pdev, which is just one step.
# merge c&v commands to single do-all-fn
# delay viewpins, dump-diet should also un-ifdef it too.

diff.sys-gpio-rollup-1

This patch:

Removed editor format-control comments, and used scripts/Lindent to clean up
whitespace, then deleted the bogus chunks :-(

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/scx200.c   |  7 -------
 drivers/char/scx200_gpio.c  | 26 +++++++++-----------------
 include/linux/scx200.h      |  7 -------
 include/linux/scx200_gpio.h |  7 -------
 4 files changed, 9 insertions(+), 38 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/scx200.c b/arch/i386/kernel/scx200.c
index 321f5fd26e7..4d3d8e811fe 100644
--- a/arch/i386/kernel/scx200.c
+++ b/arch/i386/kernel/scx200.c
@@ -159,10 +159,3 @@ EXPORT_SYMBOL(scx200_gpio_base);
 EXPORT_SYMBOL(scx200_gpio_shadow);
 EXPORT_SYMBOL(scx200_gpio_configure);
 EXPORT_SYMBOL(scx200_cb_base);
-
-/*
-    Local variables:
-        compile-command: "make -k -C ../../.. SUBDIRS=arch/i386/kernel modules"
-        c-basic-offset: 8
-    End:
-*/
diff --git a/drivers/char/scx200_gpio.c b/drivers/char/scx200_gpio.c
index 664a6e97eb1..dd051ea6755 100644
--- a/drivers/char/scx200_gpio.c
+++ b/drivers/char/scx200_gpio.c
@@ -1,4 +1,4 @@
-/* linux/drivers/char/scx200_gpio.c 
+/* linux/drivers/char/scx200_gpio.c
 
    National Semiconductor SCx200 GPIO driver.  Allows a user space
    process to play with the GPIO pins.
@@ -26,7 +26,7 @@ static int major = 0;		/* default to dynamic major */
 module_param(major, int, 0);
 MODULE_PARM_DESC(major, "Major device number");
 
-static ssize_t scx200_gpio_write(struct file *file, const char __user *data, 
+static ssize_t scx200_gpio_write(struct file *file, const char __user *data,
 				 size_t len, loff_t *ppos)
 {
 	unsigned m = iminor(file->f_dentry->d_inode);
@@ -34,15 +34,14 @@ static ssize_t scx200_gpio_write(struct file *file, const char __user *data,
 
 	for (i = 0; i < len; ++i) {
 		char c;
-		if (get_user(c, data+i))
+		if (get_user(c, data + i))
 			return -EFAULT;
-		switch (c)
-		{
-		case '0': 
-			scx200_gpio_set(m, 0); 
+		switch (c) {
+		case '0':
+			scx200_gpio_set(m, 0);
 			break;
-		case '1': 
-			scx200_gpio_set(m, 1); 
+		case '1':
+			scx200_gpio_set(m, 1);
 			break;
 		case 'O':
 			printk(KERN_INFO NAME ": GPIO%d output enabled\n", m);
@@ -83,7 +82,7 @@ static ssize_t scx200_gpio_read(struct file *file, char __user *buf,
 	value = scx200_gpio_get(m);
 	if (put_user(value ? '1' : '0', buf))
 		return -EFAULT;
-	
+
 	return 1;
 }
 
@@ -140,10 +139,3 @@ static void __exit scx200_gpio_cleanup(void)
 
 module_init(scx200_gpio_init);
 module_exit(scx200_gpio_cleanup);
-
-/*
-    Local variables:
-        compile-command: "make -k -C ../.. SUBDIRS=drivers/char modules"
-        c-basic-offset: 8
-    End:
-*/
diff --git a/include/linux/scx200.h b/include/linux/scx200.h
index a22f9e173ad..693c0557e70 100644
--- a/include/linux/scx200.h
+++ b/include/linux/scx200.h
@@ -49,10 +49,3 @@ extern unsigned scx200_cb_base;
 #define SCx200_REV 0x3d		/* Revision Register */
 #define SCx200_CBA 0x3e		/* Configuration Base Address Register */
 #define SCx200_CBA_SCRATCH 0x64	/* Configuration Base Address Scratchpad */
-
-/*
-    Local variables:
-        compile-command: "make -C ../.. bzImage modules"
-        c-basic-offset: 8
-    End:
-*/
diff --git a/include/linux/scx200_gpio.h b/include/linux/scx200_gpio.h
index 30cdd648ba7..83ab8a1521f 100644
--- a/include/linux/scx200_gpio.h
+++ b/include/linux/scx200_gpio.h
@@ -87,10 +87,3 @@ static inline void scx200_gpio_change(int index) {
 #undef __SCx200_GPIO_SHADOW
 #undef __SCx200_GPIO_INDEX
 #undef __SCx200_GPIO_OUT
-
-/*
-    Local variables:
-        compile-command: "make -C ../.. bzImage modules"
-        c-basic-offset: 8
-    End:
-*/
-- 
cgit v1.2.3-70-g09d2


From 55b8c0455b8aeb80f94183fa3aa42e3fa62b1705 Mon Sep 17 00:00:00 2001
From: Jim Cromie <jim.cromie@gmail.com>
Date: Tue, 27 Jun 2006 02:54:15 -0700
Subject: [PATCH] chardev: GPIO for SCx200 & PC-8736x: device minor numbers are
 unsigned ints

Per kernel headers, device minor numbers are unsigned ints.  Do the same in
this driver.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/scx200.c   |  2 +-
 include/linux/scx200_gpio.h | 14 +++++++-------
 2 files changed, 8 insertions(+), 8 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/scx200.c b/arch/i386/kernel/scx200.c
index 4d3d8e811fe..18f895ce248 100644
--- a/arch/i386/kernel/scx200.c
+++ b/arch/i386/kernel/scx200.c
@@ -87,7 +87,7 @@ static int __devinit scx200_probe(struct pci_dev *pdev, const struct pci_device_
 	return 0;
 }
 
-u32 scx200_gpio_configure(int index, u32 mask, u32 bits)
+u32 scx200_gpio_configure(unsigned index, u32 mask, u32 bits)
 {
 	u32 config, new_config;
 	unsigned long flags;
diff --git a/include/linux/scx200_gpio.h b/include/linux/scx200_gpio.h
index 83ab8a1521f..90dd069cc14 100644
--- a/include/linux/scx200_gpio.h
+++ b/include/linux/scx200_gpio.h
@@ -1,6 +1,6 @@
 #include <linux/spinlock.h>
 
-u32 scx200_gpio_configure(int index, u32 set, u32 clear);
+u32 scx200_gpio_configure(unsigned index, u32 set, u32 clear);
 
 extern unsigned scx200_gpio_base;
 extern long scx200_gpio_shadow[2];
@@ -17,7 +17,7 @@ extern long scx200_gpio_shadow[2];
 
 /* returns the value of the GPIO pin */
 
-static inline int scx200_gpio_get(int index) {
+static inline int scx200_gpio_get(unsigned index) {
 	__SCx200_GPIO_BANK;
 	__SCx200_GPIO_IOADDR + 0x04;
 	__SCx200_GPIO_INDEX;
@@ -29,7 +29,7 @@ static inline int scx200_gpio_get(int index) {
    driven if the GPIO is configured as an output, it might not be the
    state of the GPIO right now if the GPIO is configured as an input) */
 
-static inline int scx200_gpio_current(int index) {
+static inline int scx200_gpio_current(unsigned index) {
         __SCx200_GPIO_BANK;
 	__SCx200_GPIO_INDEX;
 		
@@ -38,7 +38,7 @@ static inline int scx200_gpio_current(int index) {
 
 /* drive the GPIO signal high */
 
-static inline void scx200_gpio_set_high(int index) {
+static inline void scx200_gpio_set_high(unsigned index) {
 	__SCx200_GPIO_BANK;
 	__SCx200_GPIO_IOADDR;
 	__SCx200_GPIO_SHADOW;
@@ -49,7 +49,7 @@ static inline void scx200_gpio_set_high(int index) {
 
 /* drive the GPIO signal low */
 
-static inline void scx200_gpio_set_low(int index) {
+static inline void scx200_gpio_set_low(unsigned index) {
 	__SCx200_GPIO_BANK;
 	__SCx200_GPIO_IOADDR;
 	__SCx200_GPIO_SHADOW;
@@ -60,7 +60,7 @@ static inline void scx200_gpio_set_low(int index) {
 
 /* drive the GPIO signal to state */
 
-static inline void scx200_gpio_set(int index, int state) {
+static inline void scx200_gpio_set(unsigned index, int state) {
 	__SCx200_GPIO_BANK;
 	__SCx200_GPIO_IOADDR;
 	__SCx200_GPIO_SHADOW;
@@ -73,7 +73,7 @@ static inline void scx200_gpio_set(int index, int state) {
 }
 
 /* toggle the GPIO signal */
-static inline void scx200_gpio_change(int index) {
+static inline void scx200_gpio_change(unsigned index) {
 	__SCx200_GPIO_BANK;
 	__SCx200_GPIO_IOADDR;
 	__SCx200_GPIO_SHADOW;
-- 
cgit v1.2.3-70-g09d2


From d424aa8744b7b7db1d32476ae6c8015d10eebe1c Mon Sep 17 00:00:00 2001
From: Jim Cromie <jim.cromie@gmail.com>
Date: Tue, 27 Jun 2006 02:54:16 -0700
Subject: [PATCH] chardev: GPIO for SCx200 & PC-8736x: put gpio_dump on a diet

Shrink scx200_gpio_dump() to a single printk with ternary ops.  The function
is still ifdef'd out, this is corrected in next patch, when it is actually
used.

The patch 'inadvertently' changed loglevel from DEBUG to INFO.  This is Good,
because in next patch, its wired to a 'command' which the user can invoke when
they want.  When they do so, its because they want INFO to support their
developement effort, and we want to give it to them without compiling a DEBUG
version of the driver.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/scx200.c | 39 +++++++++++----------------------------
 1 file changed, 11 insertions(+), 28 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/scx200.c b/arch/i386/kernel/scx200.c
index 18f895ce248..9e96a785dd0 100644
--- a/arch/i386/kernel/scx200.c
+++ b/arch/i386/kernel/scx200.c
@@ -108,34 +108,17 @@ u32 scx200_gpio_configure(unsigned index, u32 mask, u32 bits)
 #if 0
 void scx200_gpio_dump(unsigned index)
 {
-	u32 config = scx200_gpio_configure(index, ~0, 0);
-	printk(KERN_DEBUG "GPIO%02u: 0x%08lx", index, (unsigned long)config);
-	
-	if (config & 1) 
-		printk(" OE"); /* output enabled */
-	else
-		printk(" TS"); /* tristate */
-	if (config & 2) 
-		printk(" PP"); /* push pull */
-	else
-		printk(" OD"); /* open drain */
-	if (config & 4) 
-		printk(" PUE"); /* pull up enabled */
-	else
-		printk(" PUD"); /* pull up disabled */
-	if (config & 8) 
-		printk(" LOCKED"); /* locked */
-	if (config & 16) 
-		printk(" LEVEL"); /* level input */
-	else
-		printk(" EDGE"); /* edge input */
-	if (config & 32) 
-		printk(" HI"); /* trigger on rising edge */
-	else
-		printk(" LO"); /* trigger on falling edge */
-	if (config & 64) 
-		printk(" DEBOUNCE"); /* debounce */
-	printk("\n");
+        u32 config = scx200_gpio_configure(index, ~0, 0);
+
+        printk(KERN_INFO NAME ": GPIO-%02u: 0x%08lx %s %s %s %s %s %s %s\n",
+               index, (unsigned long) config,
+               (config & 1) ? "OE"      : "TS",		/* output enabled / tristate */
+               (config & 2) ? "PP"      : "OD",		/* push pull / open drain */
+               (config & 4) ? "PUE"     : "PUD",	/* pull up enabled/disabled */
+               (config & 8) ? "LOCKED"  : "",		/* locked / unlocked */
+               (config & 16) ? "LEVEL"  : "EDGE",	/* level/edge input */
+               (config & 32) ? "HI"     : "LO",		/* trigger on rising/falling edge */
+               (config & 64) ? "DEBOUNCE" : "");	/* debounce */
 }
 #endif  /*  0  */
 
-- 
cgit v1.2.3-70-g09d2


From 9550a339e1ab1709dd53d92a1b76eecae2df9f3c Mon Sep 17 00:00:00 2001
From: Jim Cromie <jim.cromie@gmail.com>
Date: Tue, 27 Jun 2006 02:54:16 -0700
Subject: [PATCH] chardev: GPIO for SCx200 & PC-8736x: add 'v' command to
 device-file

Add a new driver command: 'v' which calls gpio_dump() on the pin.  The output
goes to the log, like all other INFO messages in the original driver.  Giving
the user control over the feedback they 'need' is construed to be a
user-friendly feature, and allows us (later) to dial down many INFO messages
to DEBUG log-level.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/scx200.c  |  3 +--
 drivers/char/scx200_gpio.c | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 2 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/scx200.c b/arch/i386/kernel/scx200.c
index 9e96a785dd0..009e6aa16f7 100644
--- a/arch/i386/kernel/scx200.c
+++ b/arch/i386/kernel/scx200.c
@@ -105,7 +105,6 @@ u32 scx200_gpio_configure(unsigned index, u32 mask, u32 bits)
 	return config;
 }
 
-#if 0
 void scx200_gpio_dump(unsigned index)
 {
         u32 config = scx200_gpio_configure(index, ~0, 0);
@@ -120,7 +119,6 @@ void scx200_gpio_dump(unsigned index)
                (config & 32) ? "HI"     : "LO",		/* trigger on rising/falling edge */
                (config & 64) ? "DEBOUNCE" : "");	/* debounce */
 }
-#endif  /*  0  */
 
 static int __init scx200_init(void)
 {
@@ -141,4 +139,5 @@ module_exit(scx200_cleanup);
 EXPORT_SYMBOL(scx200_gpio_base);
 EXPORT_SYMBOL(scx200_gpio_shadow);
 EXPORT_SYMBOL(scx200_gpio_configure);
+EXPORT_SYMBOL(scx200_gpio_dump);
 EXPORT_SYMBOL(scx200_cb_base);
diff --git a/drivers/char/scx200_gpio.c b/drivers/char/scx200_gpio.c
index e6e52c48697..a1a56c5c8a8 100644
--- a/drivers/char/scx200_gpio.c
+++ b/drivers/char/scx200_gpio.c
@@ -41,6 +41,7 @@ static ssize_t scx200_gpio_write(struct file *file, const char __user *data,
 {
 	unsigned m = iminor(file->f_dentry->d_inode);
 	size_t i;
+	int err = 0;
 
 	for (i = 0; i < len; ++i) {
 		char c;
@@ -77,8 +78,23 @@ static ssize_t scx200_gpio_write(struct file *file, const char __user *data,
 			printk(KERN_INFO NAME ": GPIO%d pull up disabled\n", m);
 			scx200_gpio_configure(m, ~4, 0);
 			break;
+
+		case 'v':
+			/* View Current pin settings */
+			scx200_gpio_dump(m);
+			break;
+		case '\n':
+			/* end of settings string, do nothing */
+			break;
+		default:
+			printk(KERN_ERR NAME
+			       ": GPIO-%2d bad setting: chr<0x%2x>\n", m,
+			       (int)c);
+			err++;
 		}
 	}
+	if (err)
+		return -EINVAL;	/* full string handled, report error */
 
 	return len;
 }
-- 
cgit v1.2.3-70-g09d2


From 9b170b8fdbd14a197ad26b4354f3810c65a96602 Mon Sep 17 00:00:00 2001
From: Jim Cromie <jim.cromie@gmail.com>
Date: Tue, 27 Jun 2006 02:54:17 -0700
Subject: [PATCH] chardev: GPIO for SCx200 & PC-8736x: refactor scx200_probe to
 better segregate _gpio initialization

Pull shadow-reg initialization into separate function now, rather than doing
it 2x later (scx200, pc8736x).  When we revisit 2nd drvr below, it will be to
reimplement an init function, rather than another refactor.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/scx200.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/scx200.c b/arch/i386/kernel/scx200.c
index 009e6aa16f7..27be55349c6 100644
--- a/arch/i386/kernel/scx200.c
+++ b/arch/i386/kernel/scx200.c
@@ -47,9 +47,17 @@ static struct pci_driver scx200_pci_driver = {
 
 static DEFINE_SPINLOCK(scx200_gpio_config_lock);
 
-static int __devinit scx200_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+static void __devinit scx200_init_shadow(void)
 {
 	int bank;
+
+	/* read the current values driven on the GPIO signals */
+	for (bank = 0; bank < 2; ++bank)
+		scx200_gpio_shadow[bank] = inl(scx200_gpio_base + 0x10 * bank);
+}
+
+static int __devinit scx200_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
 	unsigned base;
 
 	if (pdev->device == PCI_DEVICE_ID_NS_SCx200_BRIDGE ||
@@ -63,10 +71,7 @@ static int __devinit scx200_probe(struct pci_dev *pdev, const struct pci_device_
 		}
 
 		scx200_gpio_base = base;
-
-		/* read the current values driven on the GPIO signals */
-		for (bank = 0; bank < 2; ++bank)
-			scx200_gpio_shadow[bank] = inl(scx200_gpio_base + 0x10 * bank);
+		scx200_init_shadow();
 
 	} else {
 		/* find the base of the Configuration Block */
-- 
cgit v1.2.3-70-g09d2


From 0e41ef3c51ea7dbb764616f60a90700647fc8518 Mon Sep 17 00:00:00 2001
From: Jim Cromie <jim.cromie@gmail.com>
Date: Tue, 27 Jun 2006 02:54:20 -0700
Subject: [PATCH] chardev: GPIO for SCx200 & PC-8736x: migrate gpio_dump to
 common module

Since the meaning of config-bits is the same for scx200 and pc8736x _gpios, we
can share a function to deliver this to user.  Since it is called via the
vtable, its also completely replaceable.  For now, we keep using printk...

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/scx200.c  | 16 ----------------
 drivers/char/nsc_gpio.c    | 16 +++++++++++++++-
 drivers/char/scx200_gpio.c |  4 ++--
 3 files changed, 17 insertions(+), 19 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/scx200.c b/arch/i386/kernel/scx200.c
index 27be55349c6..edead73ebef 100644
--- a/arch/i386/kernel/scx200.c
+++ b/arch/i386/kernel/scx200.c
@@ -110,21 +110,6 @@ u32 scx200_gpio_configure(unsigned index, u32 mask, u32 bits)
 	return config;
 }
 
-void scx200_gpio_dump(unsigned index)
-{
-        u32 config = scx200_gpio_configure(index, ~0, 0);
-
-        printk(KERN_INFO NAME ": GPIO-%02u: 0x%08lx %s %s %s %s %s %s %s\n",
-               index, (unsigned long) config,
-               (config & 1) ? "OE"      : "TS",		/* output enabled / tristate */
-               (config & 2) ? "PP"      : "OD",		/* push pull / open drain */
-               (config & 4) ? "PUE"     : "PUD",	/* pull up enabled/disabled */
-               (config & 8) ? "LOCKED"  : "",		/* locked / unlocked */
-               (config & 16) ? "LEVEL"  : "EDGE",	/* level/edge input */
-               (config & 32) ? "HI"     : "LO",		/* trigger on rising/falling edge */
-               (config & 64) ? "DEBOUNCE" : "");	/* debounce */
-}
-
 static int __init scx200_init(void)
 {
 	printk(KERN_INFO NAME ": NatSemi SCx200 Driver\n");
@@ -144,5 +129,4 @@ module_exit(scx200_cleanup);
 EXPORT_SYMBOL(scx200_gpio_base);
 EXPORT_SYMBOL(scx200_gpio_shadow);
 EXPORT_SYMBOL(scx200_gpio_configure);
-EXPORT_SYMBOL(scx200_gpio_dump);
 EXPORT_SYMBOL(scx200_cb_base);
diff --git a/drivers/char/nsc_gpio.c b/drivers/char/nsc_gpio.c
index 3842c272711..72b0a5791ed 100644
--- a/drivers/char/nsc_gpio.c
+++ b/drivers/char/nsc_gpio.c
@@ -19,6 +19,19 @@
 
 #define NAME "nsc_gpio"
 
+void nsc_gpio_dump(unsigned index, u32 config)
+{
+	printk(KERN_INFO NAME ": GPIO-%02u: 0x%08lx %s %s %s %s %s %s %s\n",
+	       index, (unsigned long)config,
+	       (config & 1) ? "OE" : "TS",      /* output-enabled/tristate */
+	       (config & 2) ? "PP" : "OD",      /* push pull / open drain */
+	       (config & 4) ? "PUE" : "PUD",    /* pull up enabled/disabled */
+	       (config & 8) ? "LOCKED" : "",    /* locked / unlocked */
+	       (config & 16) ? "LEVEL" : "EDGE",/* level/edge input */
+	       (config & 32) ? "HI" : "LO",     /* trigger on rise/fall edge */
+	       (config & 64) ? "DEBOUNCE" : "");        /* debounce */
+}
+
 ssize_t nsc_gpio_write(struct file *file, const char __user *data,
 		       size_t len, loff_t *ppos)
 {
@@ -99,9 +112,10 @@ ssize_t nsc_gpio_read(struct file *file, char __user * buf,
 	return 1;
 }
 
-/* common routines for both scx200_gpio and pc87360_gpio */
+/* common file-ops routines for both scx200_gpio and pc87360_gpio */
 EXPORT_SYMBOL(nsc_gpio_write);
 EXPORT_SYMBOL(nsc_gpio_read);
+EXPORT_SYMBOL(nsc_gpio_dump);
 
 static int __init nsc_gpio_init(void)
 {
diff --git a/drivers/char/scx200_gpio.c b/drivers/char/scx200_gpio.c
index eb9a8477759..442367b3f5d 100644
--- a/drivers/char/scx200_gpio.c
+++ b/drivers/char/scx200_gpio.c
@@ -35,7 +35,7 @@ static int major = 0;		/* default to dynamic major */
 module_param(major, int, 0);
 MODULE_PARM_DESC(major, "Major device number");
 
-extern void scx200_gpio_dump(unsigned index);
+extern void nsc_gpio_dump(unsigned index);
 
 extern ssize_t nsc_gpio_write(struct file *file, const char __user *data,
 			      size_t len, loff_t *ppos);
@@ -46,7 +46,7 @@ extern ssize_t nsc_gpio_read(struct file *file, char __user *buf,
 struct nsc_gpio_ops scx200_access = {
 	.owner		= THIS_MODULE,
 	.gpio_config	= scx200_gpio_configure,
-	.gpio_dump	= scx200_gpio_dump,
+	.gpio_dump	= nsc_gpio_dump,
 	.gpio_get	= scx200_gpio_get,
 	.gpio_set	= scx200_gpio_set,
 	.gpio_set_high	= scx200_gpio_set_high,
-- 
cgit v1.2.3-70-g09d2


From 8bcf6135c3e8cdfab375f4041a48721483519eee Mon Sep 17 00:00:00 2001
From: Jim Cromie <jim.cromie@gmail.com>
Date: Tue, 27 Jun 2006 02:54:25 -0700
Subject: [PATCH] chardev: GPIO for SCx200 & PC-8736x: replace spinlocks w
 mutexes

Replace spinlocks guarding gpio config ops with mutexes.  This is a me-too
patch, and is justifiable insofar as mutexes have stricter semantics and
better debugging support, so are preferred where they are applicable.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/scx200.c   | 8 ++++----
 drivers/char/pc8736x_gpio.c | 8 ++++----
 2 files changed, 8 insertions(+), 8 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/scx200.c b/arch/i386/kernel/scx200.c
index edead73ebef..9bf590cefc7 100644
--- a/arch/i386/kernel/scx200.c
+++ b/arch/i386/kernel/scx200.c
@@ -9,6 +9,7 @@
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/mutex.h>
 #include <linux/pci.h>
 
 #include <linux/scx200.h>
@@ -45,7 +46,7 @@ static struct pci_driver scx200_pci_driver = {
 	.probe = scx200_probe,
 };
 
-static DEFINE_SPINLOCK(scx200_gpio_config_lock);
+static DEFINE_MUTEX(scx200_gpio_config_lock);
 
 static void __devinit scx200_init_shadow(void)
 {
@@ -95,9 +96,8 @@ static int __devinit scx200_probe(struct pci_dev *pdev, const struct pci_device_
 u32 scx200_gpio_configure(unsigned index, u32 mask, u32 bits)
 {
 	u32 config, new_config;
-	unsigned long flags;
 
-	spin_lock_irqsave(&scx200_gpio_config_lock, flags);
+	mutex_lock(&scx200_gpio_config_lock);
 
 	outl(index, scx200_gpio_base + 0x20);
 	config = inl(scx200_gpio_base + 0x24);
@@ -105,7 +105,7 @@ u32 scx200_gpio_configure(unsigned index, u32 mask, u32 bits)
 	new_config = (config & mask) | bits;
 	outl(new_config, scx200_gpio_base + 0x24);
 
-	spin_unlock_irqrestore(&scx200_gpio_config_lock, flags);
+	mutex_unlock(&scx200_gpio_config_lock);
 
 	return config;
 }
diff --git a/drivers/char/pc8736x_gpio.c b/drivers/char/pc8736x_gpio.c
index b8183d50833..72dcf222f14 100644
--- a/drivers/char/pc8736x_gpio.c
+++ b/drivers/char/pc8736x_gpio.c
@@ -16,6 +16,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/ioport.h>
+#include <linux/mutex.h>
 #include <linux/nsc_gpio.h>
 #include <linux/platform_device.h>
 #include <asm/uaccess.h>
@@ -31,7 +32,7 @@ static int major;		/* default to dynamic major */
 module_param(major, int, 0);
 MODULE_PARM_DESC(major, "Major device number");
 
-static DEFINE_SPINLOCK(pc8736x_gpio_config_lock);
+static DEFINE_MUTEX(pc8736x_gpio_config_lock);
 static unsigned pc8736x_gpio_base;
 static u8 pc8736x_gpio_shadow[4];
 
@@ -119,9 +120,8 @@ static inline u32 pc8736x_gpio_configure_fn(unsigned index, u32 mask, u32 bits,
 					    u32 func_slct)
 {
 	u32 config, new_config;
-	unsigned long flags;
 
-	spin_lock_irqsave(&pc8736x_gpio_config_lock, flags);
+	mutex_lock(&pc8736x_gpio_config_lock);
 
 	device_select(SIO_GPIO_UNIT);
 	select_pin(index);
@@ -133,7 +133,7 @@ static inline u32 pc8736x_gpio_configure_fn(unsigned index, u32 mask, u32 bits,
 	new_config = (config & mask) | bits;
 	superio_outb(func_slct, new_config);
 
-	spin_unlock_irqrestore(&pc8736x_gpio_config_lock, flags);
+	mutex_unlock(&pc8736x_gpio_config_lock);
 
 	return config;
 }
-- 
cgit v1.2.3-70-g09d2


From 5c45bf279d378d436ce45825c0f136696c7b6109 Mon Sep 17 00:00:00 2001
From: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
Date: Tue, 27 Jun 2006 02:54:42 -0700
Subject: [PATCH] sched: mc/smt power savings sched policy

sysfs entries 'sched_mc_power_savings' and 'sched_smt_power_savings' in
/sys/devices/system/cpu/ control the MC/SMT power savings policy for the
scheduler.

Based on the values (1-enable, 0-disable) for these controls, sched groups
cpu power will be determined for different domains.  When power savings
policy is enabled and under light load conditions, scheduler will minimize
the physical packages/cpu cores carrying the load and thus conserving
power(with a perf impact based on the workload characteristics...  see OLS
2005 CMP kernel scheduler paper for more details..)

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Con Kolivas <kernel@kolivas.org>
Cc: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/smpboot.c     |   8 +-
 arch/x86_64/kernel/smpboot.c   |   8 +-
 drivers/base/cpu.c             |  10 +-
 include/asm-i386/topology.h    |   5 +
 include/asm-ia64/topology.h    |   1 +
 include/asm-powerpc/topology.h |   5 +
 include/asm-sparc64/topology.h |   3 +
 include/asm-x86_64/topology.h  |   2 +
 include/linux/sched.h          |  10 ++
 include/linux/topology.h       |   3 +-
 kernel/sched.c                 | 240 ++++++++++++++++++++++++++++++++++++-----
 11 files changed, 262 insertions(+), 33 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c
index ab5275beddf..89e7315e539 100644
--- a/arch/i386/kernel/smpboot.c
+++ b/arch/i386/kernel/smpboot.c
@@ -448,10 +448,12 @@ cpumask_t cpu_coregroup_map(int cpu)
 	struct cpuinfo_x86 *c = cpu_data + cpu;
 	/*
 	 * For perf, we return last level cache shared map.
-	 * TBD: when power saving sched policy is added, we will return
-	 *      cpu_core_map when power saving policy is enabled
+	 * And for power savings, we return cpu_core_map
 	 */
-	return c->llc_shared_map;
+	if (sched_mc_power_savings || sched_smt_power_savings)
+		return cpu_core_map[cpu];
+	else
+		return c->llc_shared_map;
 }
 
 /* representing cpus for which sibling maps can be computed */
diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index 4e9755179ec..540c0ccbccc 100644
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -455,10 +455,12 @@ cpumask_t cpu_coregroup_map(int cpu)
 	struct cpuinfo_x86 *c = cpu_data + cpu;
 	/*
 	 * For perf, we return last level cache shared map.
-	 * TBD: when power saving sched policy is added, we will return
-	 *      cpu_core_map when power saving policy is enabled
+	 * And for power savings, we return cpu_core_map
 	 */
-	return c->llc_shared_map;
+	if (sched_mc_power_savings || sched_smt_power_savings)
+		return cpu_core_map[cpu];
+	else
+		return c->llc_shared_map;
 }
 
 /* representing cpus for which sibling maps can be computed */
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 3972d8ac978..4bef76a2f3f 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -143,5 +143,13 @@ EXPORT_SYMBOL_GPL(get_cpu_sysdev);
 
 int __init cpu_dev_init(void)
 {
-	return sysdev_class_register(&cpu_sysdev_class);
+	int err;
+
+	err = sysdev_class_register(&cpu_sysdev_class);
+#if defined(CONFIG_SCHED_MC) || defined(CONFIG_SCHED_SMT)
+	if (!err)
+		err = sched_create_sysfs_power_savings_entries(&cpu_sysdev_class);
+#endif
+
+	return err;
 }
diff --git a/include/asm-i386/topology.h b/include/asm-i386/topology.h
index aa4185ee81f..6adbd9b1ae8 100644
--- a/include/asm-i386/topology.h
+++ b/include/asm-i386/topology.h
@@ -112,4 +112,9 @@ extern unsigned long node_remap_size[];
 
 extern cpumask_t cpu_coregroup_map(int cpu);
 
+#ifdef CONFIG_SMP
+#define mc_capable()	(boot_cpu_data.x86_max_cores > 1)
+#define smt_capable()	(smp_num_siblings > 1)
+#endif
+
 #endif /* _ASM_I386_TOPOLOGY_H */
diff --git a/include/asm-ia64/topology.h b/include/asm-ia64/topology.h
index 616b5ed2aa7..937c2125752 100644
--- a/include/asm-ia64/topology.h
+++ b/include/asm-ia64/topology.h
@@ -112,6 +112,7 @@ void build_cpu_to_node_map(void);
 #define topology_core_id(cpu)			(cpu_data(cpu)->core_id)
 #define topology_core_siblings(cpu)		(cpu_core_map[cpu])
 #define topology_thread_siblings(cpu)		(cpu_sibling_map[cpu])
+#define smt_capable() 				(smp_num_siblings > 1)
 #endif
 
 #include <asm-generic/topology.h>
diff --git a/include/asm-powerpc/topology.h b/include/asm-powerpc/topology.h
index 92f3e5507d2..bbc3844b086 100644
--- a/include/asm-powerpc/topology.h
+++ b/include/asm-powerpc/topology.h
@@ -93,5 +93,10 @@ static inline void sysfs_remove_device_from_node(struct sys_device *dev,
 
 #endif /* CONFIG_NUMA */
 
+#ifdef CONFIG_SMP
+#include <asm/cputable.h>
+#define smt_capable() 		(cpu_has_feature(CPU_FTR_SMT))
+#endif
+
 #endif /* __KERNEL__ */
 #endif	/* _ASM_POWERPC_TOPOLOGY_H */
diff --git a/include/asm-sparc64/topology.h b/include/asm-sparc64/topology.h
index 0e234e201bd..98a6c613589 100644
--- a/include/asm-sparc64/topology.h
+++ b/include/asm-sparc64/topology.h
@@ -1,6 +1,9 @@
 #ifndef _ASM_SPARC64_TOPOLOGY_H
 #define _ASM_SPARC64_TOPOLOGY_H
 
+#include <asm/spitfire.h>
+#define smt_capable()	(tlb_type == hypervisor)
+
 #include <asm-generic/topology.h>
 
 #endif /* _ASM_SPARC64_TOPOLOGY_H */
diff --git a/include/asm-x86_64/topology.h b/include/asm-x86_64/topology.h
index c4e46e7fa7b..6e7a2e976b0 100644
--- a/include/asm-x86_64/topology.h
+++ b/include/asm-x86_64/topology.h
@@ -59,6 +59,8 @@ extern int __node_distance(int, int);
 #define topology_core_id(cpu)			(cpu_data[cpu].cpu_core_id)
 #define topology_core_siblings(cpu)		(cpu_core_map[cpu])
 #define topology_thread_siblings(cpu)		(cpu_sibling_map[cpu])
+#define mc_capable()			(boot_cpu_data.x86_max_cores > 1)
+#define smt_capable() 			(smp_num_siblings > 1)
 #endif
 
 #include <asm-generic/topology.h>
diff --git a/include/linux/sched.h b/include/linux/sched.h
index ab8ffc54423..0bc81a151e5 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -570,6 +570,11 @@ enum idle_type
 #define SD_WAKE_AFFINE		32	/* Wake task to waking CPU */
 #define SD_WAKE_BALANCE		64	/* Perform balancing at task wakeup */
 #define SD_SHARE_CPUPOWER	128	/* Domain members share cpu power */
+#define SD_POWERSAVINGS_BALANCE	256	/* Balance for power savings */
+
+#define BALANCE_FOR_POWER	((sched_mc_power_savings || sched_smt_power_savings) \
+				 ? SD_POWERSAVINGS_BALANCE : 0)
+
 
 struct sched_group {
 	struct sched_group *next;	/* Must be a circular list */
@@ -1412,6 +1417,11 @@ static inline void arch_pick_mmap_layout(struct mm_struct *mm)
 extern long sched_setaffinity(pid_t pid, cpumask_t new_mask);
 extern long sched_getaffinity(pid_t pid, cpumask_t *mask);
 
+#include <linux/sysdev.h>
+extern int sched_mc_power_savings, sched_smt_power_savings;
+extern struct sysdev_attribute attr_sched_mc_power_savings, attr_sched_smt_power_savings;
+extern int sched_create_sysfs_power_savings_entries(struct sysdev_class *cls);
+
 extern void normalize_rt_tasks(void);
 
 #ifdef CONFIG_PM
diff --git a/include/linux/topology.h b/include/linux/topology.h
index a305ae2e44b..ec1eca85290 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -134,7 +134,8 @@
 	.flags			= SD_LOAD_BALANCE	\
 				| SD_BALANCE_NEWIDLE	\
 				| SD_BALANCE_EXEC	\
-				| SD_WAKE_AFFINE,	\
+				| SD_WAKE_AFFINE	\
+				| BALANCE_FOR_POWER,	\
 	.last_balance		= jiffies,		\
 	.balance_interval	= 1,			\
 	.nr_balance_failed	= 0,			\
diff --git a/kernel/sched.c b/kernel/sched.c
index 122b75584a1..54fa282657c 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1162,6 +1162,11 @@ static int sched_balance_self(int cpu, int flag)
 	struct sched_domain *tmp, *sd = NULL;
 
 	for_each_domain(cpu, tmp) {
+ 		/*
+ 	 	 * If power savings logic is enabled for a domain, stop there.
+ 	 	 */
+		if (tmp->flags & SD_POWERSAVINGS_BALANCE)
+			break;
 		if (tmp->flags & flag)
 			sd = tmp;
 	}
@@ -2082,6 +2087,12 @@ find_busiest_group(struct sched_domain *sd, int this_cpu,
 	unsigned long busiest_load_per_task, busiest_nr_running;
 	unsigned long this_load_per_task, this_nr_running;
 	int load_idx;
+#if defined(CONFIG_SCHED_MC) || defined(CONFIG_SCHED_SMT)
+	int power_savings_balance = 1;
+	unsigned long leader_nr_running = 0, min_load_per_task = 0;
+	unsigned long min_nr_running = ULONG_MAX;
+	struct sched_group *group_min = NULL, *group_leader = NULL;
+#endif
 
 	max_load = this_load = total_load = total_pwr = 0;
 	busiest_load_per_task = busiest_nr_running = 0;
@@ -2094,7 +2105,7 @@ find_busiest_group(struct sched_domain *sd, int this_cpu,
 		load_idx = sd->idle_idx;
 
 	do {
-		unsigned long load;
+		unsigned long load, group_capacity;
 		int local_group;
 		int i;
 		unsigned long sum_nr_running, sum_weighted_load;
@@ -2127,18 +2138,76 @@ find_busiest_group(struct sched_domain *sd, int this_cpu,
 		/* Adjust by relative CPU power of the group */
 		avg_load = (avg_load * SCHED_LOAD_SCALE) / group->cpu_power;
 
+		group_capacity = group->cpu_power / SCHED_LOAD_SCALE;
+
 		if (local_group) {
 			this_load = avg_load;
 			this = group;
 			this_nr_running = sum_nr_running;
 			this_load_per_task = sum_weighted_load;
 		} else if (avg_load > max_load &&
-			   sum_nr_running > group->cpu_power / SCHED_LOAD_SCALE) {
+			   sum_nr_running > group_capacity) {
 			max_load = avg_load;
 			busiest = group;
 			busiest_nr_running = sum_nr_running;
 			busiest_load_per_task = sum_weighted_load;
 		}
+
+#if defined(CONFIG_SCHED_MC) || defined(CONFIG_SCHED_SMT)
+		/*
+		 * Busy processors will not participate in power savings
+		 * balance.
+		 */
+ 		if (idle == NOT_IDLE || !(sd->flags & SD_POWERSAVINGS_BALANCE))
+ 			goto group_next;
+
+		/*
+		 * If the local group is idle or completely loaded
+		 * no need to do power savings balance at this domain
+		 */
+		if (local_group && (this_nr_running >= group_capacity ||
+				    !this_nr_running))
+			power_savings_balance = 0;
+
+ 		/*
+		 * If a group is already running at full capacity or idle,
+		 * don't include that group in power savings calculations
+ 		 */
+ 		if (!power_savings_balance || sum_nr_running >= group_capacity
+		    || !sum_nr_running)
+ 			goto group_next;
+
+ 		/*
+		 * Calculate the group which has the least non-idle load.
+ 		 * This is the group from where we need to pick up the load
+ 		 * for saving power
+ 		 */
+ 		if ((sum_nr_running < min_nr_running) ||
+ 		    (sum_nr_running == min_nr_running &&
+		     first_cpu(group->cpumask) <
+		     first_cpu(group_min->cpumask))) {
+ 			group_min = group;
+ 			min_nr_running = sum_nr_running;
+			min_load_per_task = sum_weighted_load /
+						sum_nr_running;
+ 		}
+
+ 		/*
+		 * Calculate the group which is almost near its
+ 		 * capacity but still has some space to pick up some load
+ 		 * from other group and save more power
+ 		 */
+ 		if (sum_nr_running <= group_capacity - 1)
+ 			if (sum_nr_running > leader_nr_running ||
+ 			    (sum_nr_running == leader_nr_running &&
+ 			     first_cpu(group->cpumask) >
+ 			      first_cpu(group_leader->cpumask))) {
+ 				group_leader = group;
+ 				leader_nr_running = sum_nr_running;
+ 			}
+
+group_next:
+#endif
 		group = group->next;
 	} while (group != sd->groups);
 
@@ -2247,7 +2316,16 @@ small_imbalance:
 	return busiest;
 
 out_balanced:
+#if defined(CONFIG_SCHED_MC) || defined(CONFIG_SCHED_SMT)
+	if (idle == NOT_IDLE || !(sd->flags & SD_POWERSAVINGS_BALANCE))
+		goto ret;
 
+	if (this == group_leader && group_leader != group_min) {
+		*imbalance = min_load_per_task;
+		return group_min;
+	}
+ret:
+#endif
 	*imbalance = 0;
 	return NULL;
 }
@@ -2300,7 +2378,8 @@ static int load_balance(int this_cpu, runqueue_t *this_rq,
 	int active_balance = 0;
 	int sd_idle = 0;
 
-	if (idle != NOT_IDLE && sd->flags & SD_SHARE_CPUPOWER)
+	if (idle != NOT_IDLE && sd->flags & SD_SHARE_CPUPOWER &&
+	    !sched_smt_power_savings)
 		sd_idle = 1;
 
 	schedstat_inc(sd, lb_cnt[idle]);
@@ -2389,7 +2468,8 @@ static int load_balance(int this_cpu, runqueue_t *this_rq,
 			sd->balance_interval *= 2;
 	}
 
-	if (!nr_moved && !sd_idle && sd->flags & SD_SHARE_CPUPOWER)
+	if (!nr_moved && !sd_idle && sd->flags & SD_SHARE_CPUPOWER &&
+	    !sched_smt_power_savings)
 		return -1;
 	return nr_moved;
 
@@ -2404,7 +2484,7 @@ out_one_pinned:
 			(sd->balance_interval < sd->max_interval))
 		sd->balance_interval *= 2;
 
-	if (!sd_idle && sd->flags & SD_SHARE_CPUPOWER)
+	if (!sd_idle && sd->flags & SD_SHARE_CPUPOWER && !sched_smt_power_savings)
 		return -1;
 	return 0;
 }
@@ -2425,7 +2505,7 @@ static int load_balance_newidle(int this_cpu, runqueue_t *this_rq,
 	int nr_moved = 0;
 	int sd_idle = 0;
 
-	if (sd->flags & SD_SHARE_CPUPOWER)
+	if (sd->flags & SD_SHARE_CPUPOWER && !sched_smt_power_savings)
 		sd_idle = 1;
 
 	schedstat_inc(sd, lb_cnt[NEWLY_IDLE]);
@@ -2466,7 +2546,7 @@ static int load_balance_newidle(int this_cpu, runqueue_t *this_rq,
 
 out_balanced:
 	schedstat_inc(sd, lb_balanced[NEWLY_IDLE]);
-	if (!sd_idle && sd->flags & SD_SHARE_CPUPOWER)
+	if (!sd_idle && sd->flags & SD_SHARE_CPUPOWER && !sched_smt_power_savings)
 		return -1;
 	sd->nr_balance_failed = 0;
 	return 0;
@@ -5732,6 +5812,7 @@ static cpumask_t sched_domain_node_span(int node)
 }
 #endif
 
+int sched_smt_power_savings = 0, sched_mc_power_savings = 0;
 /*
  * At the moment, CONFIG_SCHED_SMT is never defined, but leave it in so we
  * can switch it on easily if needed.
@@ -6113,37 +6194,72 @@ static int build_sched_domains(const cpumask_t *cpu_map)
 #endif
 
 	/* Calculate CPU power for physical packages and nodes */
+#ifdef CONFIG_SCHED_SMT
 	for_each_cpu_mask(i, *cpu_map) {
-		int power;
 		struct sched_domain *sd;
-#ifdef CONFIG_SCHED_SMT
 		sd = &per_cpu(cpu_domains, i);
-		power = SCHED_LOAD_SCALE;
-		sd->groups->cpu_power = power;
+		sd->groups->cpu_power = SCHED_LOAD_SCALE;
+	}
 #endif
 #ifdef CONFIG_SCHED_MC
+	for_each_cpu_mask(i, *cpu_map) {
+		int power;
+		struct sched_domain *sd;
 		sd = &per_cpu(core_domains, i);
-		power = SCHED_LOAD_SCALE + (cpus_weight(sd->groups->cpumask)-1)
+		if (sched_smt_power_savings)
+			power = SCHED_LOAD_SCALE * cpus_weight(sd->groups->cpumask);
+		else
+			power = SCHED_LOAD_SCALE + (cpus_weight(sd->groups->cpumask)-1)
 					    * SCHED_LOAD_SCALE / 10;
 		sd->groups->cpu_power = power;
+	}
+#endif
 
+	for_each_cpu_mask(i, *cpu_map) {
+		struct sched_domain *sd;
+#ifdef CONFIG_SCHED_MC
 		sd = &per_cpu(phys_domains, i);
+		if (i != first_cpu(sd->groups->cpumask))
+			continue;
 
- 		/*
- 		 * This has to be < 2 * SCHED_LOAD_SCALE
- 		 * Lets keep it SCHED_LOAD_SCALE, so that
- 		 * while calculating NUMA group's cpu_power
- 		 * we can simply do
- 		 *  numa_group->cpu_power += phys_group->cpu_power;
- 		 *
- 		 * See "only add power once for each physical pkg"
- 		 * comment below
- 		 */
- 		sd->groups->cpu_power = SCHED_LOAD_SCALE;
+		sd->groups->cpu_power = 0;
+		if (sched_mc_power_savings || sched_smt_power_savings) {
+			int j;
+
+ 			for_each_cpu_mask(j, sd->groups->cpumask) {
+				struct sched_domain *sd1;
+ 				sd1 = &per_cpu(core_domains, j);
+ 				/*
+ 			 	 * for each core we will add once
+ 				 * to the group in physical domain
+ 			 	 */
+  	 			if (j != first_cpu(sd1->groups->cpumask))
+ 					continue;
+
+ 				if (sched_smt_power_savings)
+   					sd->groups->cpu_power += sd1->groups->cpu_power;
+ 				else
+   					sd->groups->cpu_power += SCHED_LOAD_SCALE;
+   			}
+ 		} else
+ 			/*
+ 			 * This has to be < 2 * SCHED_LOAD_SCALE
+ 			 * Lets keep it SCHED_LOAD_SCALE, so that
+ 			 * while calculating NUMA group's cpu_power
+ 			 * we can simply do
+ 			 *  numa_group->cpu_power += phys_group->cpu_power;
+ 			 *
+ 			 * See "only add power once for each physical pkg"
+ 			 * comment below
+ 			 */
+ 			sd->groups->cpu_power = SCHED_LOAD_SCALE;
 #else
+		int power;
 		sd = &per_cpu(phys_domains, i);
-		power = SCHED_LOAD_SCALE + SCHED_LOAD_SCALE *
-				(cpus_weight(sd->groups->cpumask)-1) / 10;
+		if (sched_smt_power_savings)
+			power = SCHED_LOAD_SCALE * cpus_weight(sd->groups->cpumask);
+		else
+			power = SCHED_LOAD_SCALE;
 		sd->groups->cpu_power = power;
 #endif
 	}
@@ -6244,6 +6360,80 @@ int partition_sched_domains(cpumask_t *partition1, cpumask_t *partition2)
 	return err;
 }
 
+#if defined(CONFIG_SCHED_MC) || defined(CONFIG_SCHED_SMT)
+int arch_reinit_sched_domains(void)
+{
+	int err;
+
+	lock_cpu_hotplug();
+	detach_destroy_domains(&cpu_online_map);
+	err = arch_init_sched_domains(&cpu_online_map);
+	unlock_cpu_hotplug();
+
+	return err;
+}
+
+static ssize_t sched_power_savings_store(const char *buf, size_t count, int smt)
+{
+	int ret;
+
+	if (buf[0] != '0' && buf[0] != '1')
+		return -EINVAL;
+
+	if (smt)
+		sched_smt_power_savings = (buf[0] == '1');
+	else
+		sched_mc_power_savings = (buf[0] == '1');
+
+	ret = arch_reinit_sched_domains();
+
+	return ret ? ret : count;
+}
+
+int sched_create_sysfs_power_savings_entries(struct sysdev_class *cls)
+{
+	int err = 0;
+#ifdef CONFIG_SCHED_SMT
+	if (smt_capable())
+		err = sysfs_create_file(&cls->kset.kobj,
+					&attr_sched_smt_power_savings.attr);
+#endif
+#ifdef CONFIG_SCHED_MC
+	if (!err && mc_capable())
+		err = sysfs_create_file(&cls->kset.kobj,
+					&attr_sched_mc_power_savings.attr);
+#endif
+	return err;
+}
+#endif
+
+#ifdef CONFIG_SCHED_MC
+static ssize_t sched_mc_power_savings_show(struct sys_device *dev, char *page)
+{
+	return sprintf(page, "%u\n", sched_mc_power_savings);
+}
+static ssize_t sched_mc_power_savings_store(struct sys_device *dev, const char *buf, size_t count)
+{
+	return sched_power_savings_store(buf, count, 0);
+}
+SYSDEV_ATTR(sched_mc_power_savings, 0644, sched_mc_power_savings_show,
+	    sched_mc_power_savings_store);
+#endif
+
+#ifdef CONFIG_SCHED_SMT
+static ssize_t sched_smt_power_savings_show(struct sys_device *dev, char *page)
+{
+	return sprintf(page, "%u\n", sched_smt_power_savings);
+}
+static ssize_t sched_smt_power_savings_store(struct sys_device *dev, const char *buf, size_t count)
+{
+	return sched_power_savings_store(buf, count, 1);
+}
+SYSDEV_ATTR(sched_smt_power_savings, 0644, sched_smt_power_savings_show,
+	    sched_smt_power_savings_store);
+#endif
+
+
 #ifdef CONFIG_HOTPLUG_CPU
 /*
  * Force a reinitialization of the sched domains hierarchy.  The domains
-- 
cgit v1.2.3-70-g09d2


From f9b8404cf8f8456dfa83459510762b700dc00385 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Tue, 27 Jun 2006 02:54:49 -0700
Subject: [PATCH] pi-futex: introduce debug_check_no_locks_freed()

Add debug_check_no_locks_freed(), as a central inline to add
bad-lock-free-debugging functionality to.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/mm/pageattr.c |  4 ++--
 include/linux/mm.h      | 10 ++++++++--
 mm/page_alloc.c         |  4 ++--
 mm/slab.c               |  2 +-
 4 files changed, 13 insertions(+), 7 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/mm/pageattr.c b/arch/i386/mm/pageattr.c
index 0887b34bc59..353a836ed63 100644
--- a/arch/i386/mm/pageattr.c
+++ b/arch/i386/mm/pageattr.c
@@ -229,8 +229,8 @@ void kernel_map_pages(struct page *page, int numpages, int enable)
 	if (PageHighMem(page))
 		return;
 	if (!enable)
-		mutex_debug_check_no_locks_freed(page_address(page),
-						 numpages * PAGE_SIZE);
+		debug_check_no_locks_freed(page_address(page),
+					   numpages * PAGE_SIZE);
 
 	/* the return value is ignored - the calls cannot fail,
 	 * large pages are disabled at boot time.
diff --git a/include/linux/mm.h b/include/linux/mm.h
index ff1fa87df8d..0ac255720f3 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1030,13 +1030,19 @@ static inline void vm_stat_account(struct mm_struct *mm,
 }
 #endif /* CONFIG_PROC_FS */
 
+static inline void
+debug_check_no_locks_freed(const void *from, unsigned long len)
+{
+	mutex_debug_check_no_locks_freed(from, len);
+}
+
 #ifndef CONFIG_DEBUG_PAGEALLOC
 static inline void
 kernel_map_pages(struct page *page, int numpages, int enable)
 {
 	if (!PageHighMem(page) && !enable)
-		mutex_debug_check_no_locks_freed(page_address(page),
-						 numpages * PAGE_SIZE);
+		debug_check_no_locks_freed(page_address(page),
+					   numpages * PAGE_SIZE);
 }
 #endif
 
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index dafd12ec7a0..084a2de7e52 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -446,8 +446,8 @@ static void __free_pages_ok(struct page *page, unsigned int order)
 
 	arch_free_page(page, order);
 	if (!PageHighMem(page))
-		mutex_debug_check_no_locks_freed(page_address(page),
-						 PAGE_SIZE<<order);
+		debug_check_no_locks_freed(page_address(page),
+					   PAGE_SIZE<<order);
 
 	for (i = 0 ; i < (1 << order) ; ++i)
 		reserved += free_pages_check(page + i);
diff --git a/mm/slab.c b/mm/slab.c
index d1d55279202..f378d027c68 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3397,7 +3397,7 @@ void kfree(const void *objp)
 	local_irq_save(flags);
 	kfree_debugcheck(objp);
 	c = virt_to_cache(objp);
-	mutex_debug_check_no_locks_freed(objp, obj_size(c));
+	debug_check_no_locks_freed(objp, obj_size(c));
 	__cache_free(c, (void *)objp);
 	local_irq_restore(flags);
 }
-- 
cgit v1.2.3-70-g09d2


From 91bf46026966926f3b63539db423144b8c66eab4 Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@osdl.org>
Date: Tue, 27 Jun 2006 02:55:09 -0700
Subject: [PATCH] do_IRQ() warning fix

arch/i386/kernel/irq.c: In function 'do_IRQ':
arch/i386/kernel/irq.c:104: warning: suggest parentheses around arithmetic in operand of |

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/irq.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
index 586b15f6741..c703bc7b088 100644
--- a/arch/i386/kernel/irq.c
+++ b/arch/i386/kernel/irq.c
@@ -100,8 +100,8 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
 		 * softirq checks work in the hardirq context.
 		 */
 		irqctx->tinfo.preempt_count =
-			irqctx->tinfo.preempt_count & ~SOFTIRQ_MASK |
-			curctx->tinfo.preempt_count & SOFTIRQ_MASK;
+			(irqctx->tinfo.preempt_count & ~SOFTIRQ_MASK) |
+			(curctx->tinfo.preempt_count & SOFTIRQ_MASK);
 
 		asm volatile(
 			"       xchgl   %%ebx,%%esp      \n"
-- 
cgit v1.2.3-70-g09d2


From 3c101cf024c3f126e174bf0d8946c587127e3c30 Mon Sep 17 00:00:00 2001
From: James Bottomley <James.Bottomley@HansenPartnership.com>
Date: Mon, 26 Jun 2006 21:33:09 -0500
Subject: [PATCH] voyager: add cpu_present_map

Voyager stopped booting some time in the 2.6.16-2.6.17 timeframe;
the reason was that it doesn't have a cpu_present_map, so add
one.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/mach-voyager/voyager_smp.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'arch/i386')

diff --git a/arch/i386/mach-voyager/voyager_smp.c b/arch/i386/mach-voyager/voyager_smp.c
index 70e560a1b79..8242af9ebc6 100644
--- a/arch/i386/mach-voyager/voyager_smp.c
+++ b/arch/i386/mach-voyager/voyager_smp.c
@@ -661,6 +661,7 @@ do_boot_cpu(__u8 cpu)
 		print_cpu_info(&cpu_data[cpu]);
 		wmb();
 		cpu_set(cpu, cpu_callout_map);
+		cpu_set(cpu, cpu_present_map);
 	}
 	else {
 		printk("CPU%d FAILED TO BOOT: ", cpu);
@@ -1912,6 +1913,7 @@ void __devinit smp_prepare_boot_cpu(void)
 	cpu_set(smp_processor_id(), cpu_online_map);
 	cpu_set(smp_processor_id(), cpu_callout_map);
 	cpu_set(smp_processor_id(), cpu_possible_map);
+	cpu_set(smp_processor_id(), cpu_present_map);
 }
 
 int __devinit
-- 
cgit v1.2.3-70-g09d2


From 79bc79b07c9c6f8ae9290704e9e503a9327fcbb2 Mon Sep 17 00:00:00 2001
From: "pageexec@freemail.hu" <pageexec@freemail.hu>
Date: Wed, 28 Jun 2006 20:44:16 +0200
Subject: [PATCH] small fix for not releasing the mmap semaphore in
 i386/arch_setup_additional_pages

the VDSO randomization code on i386 fails to release the mmap semaphore
if insert_vm_struct() fails.

[ Made the conditional unlikely. -- Linus ]

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/sysenter.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/sysenter.c b/arch/i386/kernel/sysenter.c
index c60419dee01..713ba39d32c 100644
--- a/arch/i386/kernel/sysenter.c
+++ b/arch/i386/kernel/sysenter.c
@@ -148,8 +148,10 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int exstack)
 	vma->vm_mm = mm;
 
 	ret = insert_vm_struct(mm, vma);
-	if (ret)
-		goto free_vma;
+	if (unlikely(ret)) {
+		kmem_cache_free(vm_area_cachep, vma);
+		goto up_fail;
+	}
 
 	current->mm->context.vdso = (void *)addr;
 	current_thread_info()->sysenter_return =
@@ -158,10 +160,6 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int exstack)
 up_fail:
 	up_write(&mm->mmap_sem);
 	return ret;
-
-free_vma:
-	kmem_cache_free(vm_area_cachep, vma);
-	return ret;
 }
 
 const char *arch_vma_name(struct vm_area_struct *vma)
-- 
cgit v1.2.3-70-g09d2


From a052b68b1e7a31f1e6a721290035e9deb0f6fed9 Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@osdl.org>
Date: Wed, 28 Jun 2006 04:26:43 -0700
Subject: [PATCH] x86: do_IRQ(): check irq number

We recently changed x86 to handle more than 256 IRQs.  Add a check in do_IRQ()
just to make sure that nothing went wrong with that implementation.

[chrisw@sous-sol.org: do x86_64 too]
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andi Kleen <ak@muc.de>
Cc: Chris Wright <chrisw@sous-sol.org>
Cc: "Protasevich, Natalie" <Natalie.Protasevich@UNISYS.com>
Cc: <Christian.Limpach@cl.cam.ac.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/irq.c   | 6 ++++++
 arch/x86_64/kernel/irq.c | 6 ++++++
 2 files changed, 12 insertions(+)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
index c703bc7b088..9eec9435318 100644
--- a/arch/i386/kernel/irq.c
+++ b/arch/i386/kernel/irq.c
@@ -60,6 +60,12 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
 	u32 *isp;
 #endif
 
+	if (unlikely((unsigned)irq >= NR_IRQS)) {
+		printk(KERN_EMERG "%s: cannot handle IRQ %d\n",
+					__FUNCTION__, irq);
+		BUG();
+	}
+
 	irq_enter();
 #ifdef CONFIG_DEBUG_STACKOVERFLOW
 	/* Debugging check for stack overflow: is there less than 1KB free? */
diff --git a/arch/x86_64/kernel/irq.c b/arch/x86_64/kernel/irq.c
index 3be0a7e4bf0..bfa82f52a5c 100644
--- a/arch/x86_64/kernel/irq.c
+++ b/arch/x86_64/kernel/irq.c
@@ -118,6 +118,12 @@ asmlinkage unsigned int do_IRQ(struct pt_regs *regs)
 	/* high bit used in ret_from_ code  */
 	unsigned irq = ~regs->orig_rax;
 
+	if (unlikely(irq >= NR_IRQS)) {
+		printk(KERN_EMERG "%s: cannot handle IRQ %d\n",
+					__FUNCTION__, irq);
+		BUG();
+	}
+
 	exit_idle();
 	irq_enter();
 #ifdef CONFIG_DEBUG_STACKOVERFLOW
-- 
cgit v1.2.3-70-g09d2


From 0686cd8fbe3e5fb1441ae84b9cbc813f9297b879 Mon Sep 17 00:00:00 2001
From: Adrian Bunk <bunk@stusta.de>
Date: Thu, 29 Jun 2006 02:24:25 -0700
Subject: [PATCH] fix sgivwfb compile

drivers/built-in.o: In function `sgivwfb_set_par':
sgivwfb.c:(.text+0x88583): undefined reference to `sgivwfb_mem_phys'
sgivwfb.c:(.text+0x88596): undefined reference to `sgivwfb_mem_phys'
sgivwfb.c:(.text+0x885a8): undefined reference to `sgivwfb_mem_phys'
drivers/built-in.o: In function `sgivwfb_check_var':
sgivwfb.c:(.text+0x88ad0): undefined reference to `sgivwfb_mem_size'
drivers/built-in.o: In function `sgivwfb_mmap':
sgivwfb.c:(.text+0x88c75): undefined reference to `sgivwfb_mem_size'
sgivwfb.c:(.text+0x88c7f): undefined reference to `sgivwfb_mem_phys'
drivers/built-in.o: In function `sgivwfb_probe':
sgivwfb.c:(.init.text+0x4060): undefined reference to `sgivwfb_mem_size'
sgivwfb.c:(.init.text+0x4065): undefined reference to `sgivwfb_mem_phys'
sgivwfb.c:(.init.text+0x4076): undefined reference to `sgivwfb_mem_phys'
sgivwfb.c:(.init.text+0x409c): undefined reference to `sgivwfb_mem_size'
sgivwfb.c:(.init.text+0x410e): undefined reference to `sgivwfb_mem_size'
sgivwfb.c:(.init.text+0x4113): undefined reference to `sgivwfb_mem_phys'
sgivwfb.c:(.init.text+0x4162): undefined reference to `sgivwfb_mem_size'
sgivwfb.c:(.init.text+0x4168): undefined reference to `sgivwfb_mem_phys'
make: *** [.tmp_vmlinux1] Error 1

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/mach-visws/setup.c             | 4 ++--
 drivers/video/sgivwfb.c                  | 6 ++----
 include/asm-i386/mach-visws/setup_arch.h | 3 +++
 3 files changed, 7 insertions(+), 6 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/mach-visws/setup.c b/arch/i386/mach-visws/setup.c
index 8a9e1a6f745..11e83a0e1d6 100644
--- a/arch/i386/mach-visws/setup.c
+++ b/arch/i386/mach-visws/setup.c
@@ -140,8 +140,8 @@ void __init time_init_hook(void)
 
 #define MB (1024 * 1024)
 
-static unsigned long sgivwfb_mem_phys;
-static unsigned long sgivwfb_mem_size;
+unsigned long sgivwfb_mem_phys;
+unsigned long sgivwfb_mem_size;
 
 long long mem_size __initdata = 0;
 
diff --git a/drivers/video/sgivwfb.c b/drivers/video/sgivwfb.c
index 2e6df1fcb2b..c0cc5e3ba7b 100644
--- a/drivers/video/sgivwfb.c
+++ b/drivers/video/sgivwfb.c
@@ -23,6 +23,8 @@
 #include <asm/io.h>
 #include <asm/mtrr.h>
 
+#include <setup_arch.h>
+
 #define INCLUDE_TIMING_TABLE_DATA
 #define DBE_REG_BASE par->regs
 #include <video/sgivw.h>
@@ -42,10 +44,6 @@ struct sgivw_par {
  *  The default can be overridden if the driver is compiled as a module
  */
 
-/* set by arch/i386/kernel/setup.c */
-extern unsigned long sgivwfb_mem_phys;
-extern unsigned long sgivwfb_mem_size;
-
 static int ypan = 0;
 static int ywrap = 0;
 
diff --git a/include/asm-i386/mach-visws/setup_arch.h b/include/asm-i386/mach-visws/setup_arch.h
index b92d6d9a4d3..33f700ef683 100644
--- a/include/asm-i386/mach-visws/setup_arch.h
+++ b/include/asm-i386/mach-visws/setup_arch.h
@@ -1,5 +1,8 @@
 /* Hook to call BIOS initialisation function */
 
+extern unsigned long sgivwfb_mem_phys;
+extern unsigned long sgivwfb_mem_size;
+
 /* no action for visws */
 
 #define ARCH_SETUP
-- 
cgit v1.2.3-70-g09d2


From cc57637b0b015fb5d70dbbec740de516d33af07d Mon Sep 17 00:00:00 2001
From: Yasunori Goto <y-goto@jp.fujitsu.com>
Date: Thu, 29 Jun 2006 02:24:27 -0700
Subject: [PATCH] solve config broken: undefined reference to `online_page'

Memory hotplug code of i386 adds memory to only highmem.  So, if
CONFIG_HIGHMEM is not set, CONFIG_MEMORY_HOTPLUG shouldn't be set.
Otherwise, it causes compile error.

In addition, many architecture can't use memory hotplug feature yet.  So, I
introduce CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG.

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/Kconfig    | 3 +++
 arch/ia64/Kconfig    | 3 +++
 arch/powerpc/Kconfig | 3 +++
 arch/x86_64/Kconfig  | 2 ++
 mm/Kconfig           | 2 +-
 5 files changed, 12 insertions(+), 1 deletion(-)

(limited to 'arch/i386')

diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index 3bb221db164..5fa3c671c93 100644
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -794,6 +794,9 @@ config COMPAT_VDSO
 
 endmenu
 
+config ARCH_ENABLE_MEMORY_HOTPLUG
+	def_bool y
+	depends on HIGHMEM
 
 menu "Power management options (ACPI, APM)"
 	depends on !X86_VOYAGER
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index a56df7bf022..5faacbb8d16 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -271,6 +271,9 @@ config HOTPLUG_CPU
 	  can be controlled through /sys/devices/system/cpu/cpu#.
 	  Say N if you want to disable CPU hotplug.
 
+config ARCH_ENABLE_MEMORY_HOTPLUG
+	def_bool y
+
 config SCHED_SMT
 	bool "SMT scheduler support"
 	depends on SMP
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index e922a88b2ba..e2e9df344ab 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -618,6 +618,9 @@ config HOTPLUG_CPU
 
 	  Say N if you are unsure.
 
+config ARCH_ENABLE_MEMORY_HOTPLUG
+	def_bool y
+
 config KEXEC
 	bool "kexec system call (EXPERIMENTAL)"
 	depends on PPC_MULTIPLATFORM && EXPERIMENTAL
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index ccc4a7fb97a..91039844820 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -370,6 +370,8 @@ config HOTPLUG_CPU
 		can be controlled through /sys/devices/system/cpu/cpu#.
 		Say N if you want to disable CPU hotplug.
 
+config ARCH_ENABLE_MEMORY_HOTPLUG
+	def_bool y
 
 config HPET_TIMER
 	bool
diff --git a/mm/Kconfig b/mm/Kconfig
index e76c023eb0b..83917291d45 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -115,7 +115,7 @@ config SPARSEMEM_EXTREME
 # eventually, we can have this option just 'select SPARSEMEM'
 config MEMORY_HOTPLUG
 	bool "Allow for memory hot-add"
-	depends on SPARSEMEM && HOTPLUG && !SOFTWARE_SUSPEND
+	depends on SPARSEMEM && HOTPLUG && !SOFTWARE_SUSPEND && ARCH_ENABLE_MEMORY_HOTPLUG
 	depends on (IA64 || X86 || PPC64)
 
 comment "Memory hotplug is currently incompatible with Software Suspend"
-- 
cgit v1.2.3-70-g09d2


From 0e41142bf52002d604e16798dc3f1c28f46cc4b6 Mon Sep 17 00:00:00 2001
From: Adrian Bunk <bunk@stusta.de>
Date: Thu, 29 Jun 2006 02:24:30 -0700
Subject: [PATCH] arch/i386/mach-visws/setup.c: remove dummy function calls

Thankfully, these dummy function calls are no longer required to avoid
warnings - if they weren't eliminated as dead code but accidentially executed
there would be a guaranteed NULL dereference.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/mach-visws/setup.c | 4 ----
 1 file changed, 4 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/mach-visws/setup.c b/arch/i386/mach-visws/setup.c
index 11e83a0e1d6..1f84cdb2477 100644
--- a/arch/i386/mach-visws/setup.c
+++ b/arch/i386/mach-visws/setup.c
@@ -177,8 +177,4 @@ char * __init machine_specific_memory_setup(void)
 	add_memory_region(sgivwfb_mem_phys, sgivwfb_mem_size, E820_RESERVED);
 
 	return "PROM";
-
-	/* Remove gcc warnings */
-	(void) sanitize_e820_map(NULL, NULL);
-	(void) copy_e820_map(NULL, 0);
 }
-- 
cgit v1.2.3-70-g09d2


From d1bef4ed5faf7d9872337b33c4269e45ae1bf960 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 29 Jun 2006 02:24:36 -0700
Subject: [PATCH] genirq: rename desc->handler to desc->chip

This patch-queue improves the generic IRQ layer to be truly generic, by adding
various abstractions and features to it, without impacting existing
functionality.

While the queue can be best described as "fix and improve everything in the
generic IRQ layer that we could think of", and thus it consists of many
smaller features and lots of cleanups, the one feature that stands out most is
the new 'irq chip' abstraction.

The irq-chip abstraction is about describing and coding and IRQ controller
driver by mapping its raw hardware capabilities [and quirks, if needed] in a
straightforward way, without having to think about "IRQ flow"
(level/edge/etc.) type of details.

This stands in contrast with the current 'irq-type' model of genirq
architectures, which 'mixes' raw hardware capabilities with 'flow' details.
The patchset supports both types of irq controller designs at once, and
converts i386 and x86_64 to the new irq-chip design.

As a bonus side-effect of the irq-chip approach, chained interrupt controllers
(master/slave PIC constructs, etc.) are now supported by design as well.

The end result of this patchset intends to be simpler architecture-level code
and more consolidation between architectures.

We reused many bits of code and many concepts from Russell King's ARM IRQ
layer, the merging of which was one of the motivations for this patchset.

This patch:

rename desc->handler to desc->chip.

Originally i did not want to do this, because it's a big patch.  But having
both "desc->handler", "desc->handle_irq" and "action->handler" caused a
large degree of confusion and made the code appear alot less clean than it
truly is.

I have also attempted a dual approach as well by introducing a
desc->chip alias - but that just wasnt robust enough and broke
frequently.

So lets get over with this quickly.  The conversion was done automatically
via scripts and converts all the code in the kernel.

This renaming patch is the first one amongst the patches, so that the
remaining patches can stay flexible and can be merged and split up
without having some big monolithic patch act as a merge barrier.

[akpm@osdl.org: build fix]
[akpm@osdl.org: another build fix]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/alpha/kernel/irq.c                            |  6 ++---
 arch/alpha/kernel/irq_alpha.c                      |  2 +-
 arch/alpha/kernel/irq_i8259.c                      |  2 +-
 arch/alpha/kernel/irq_pyxis.c                      |  2 +-
 arch/alpha/kernel/irq_srm.c                        |  2 +-
 arch/alpha/kernel/sys_alcor.c                      |  2 +-
 arch/alpha/kernel/sys_cabriolet.c                  |  2 +-
 arch/alpha/kernel/sys_dp264.c                      |  2 +-
 arch/alpha/kernel/sys_eb64p.c                      |  2 +-
 arch/alpha/kernel/sys_eiger.c                      |  2 +-
 arch/alpha/kernel/sys_jensen.c                     | 10 ++++----
 arch/alpha/kernel/sys_marvel.c                     |  6 ++---
 arch/alpha/kernel/sys_mikasa.c                     |  2 +-
 arch/alpha/kernel/sys_noritake.c                   |  2 +-
 arch/alpha/kernel/sys_rawhide.c                    |  2 +-
 arch/alpha/kernel/sys_rx164.c                      |  2 +-
 arch/alpha/kernel/sys_sable.c                      |  2 +-
 arch/alpha/kernel/sys_takara.c                     |  2 +-
 arch/alpha/kernel/sys_titan.c                      |  2 +-
 arch/alpha/kernel/sys_wildfire.c                   |  6 ++---
 arch/cris/arch-v10/kernel/irq.c                    |  2 +-
 arch/cris/arch-v32/kernel/irq.c                    |  2 +-
 arch/cris/kernel/irq.c                             |  2 +-
 arch/i386/kernel/i8259.c                           |  6 ++---
 arch/i386/kernel/io_apic.c                         | 16 +++++++------
 arch/i386/kernel/irq.c                             |  6 ++---
 arch/i386/mach-visws/visws_apic.c                  | 12 +++++-----
 arch/i386/mach-voyager/voyager_smp.c               |  2 +-
 arch/ia64/kernel/iosapic.c                         | 10 ++++----
 arch/ia64/kernel/irq.c                             | 18 +++++++-------
 arch/ia64/kernel/irq_ia64.c                        |  2 +-
 arch/ia64/kernel/smpboot.c                         |  6 ++---
 arch/ia64/sn/kernel/irq.c                          |  4 ++--
 arch/m32r/kernel/irq.c                             |  2 +-
 arch/m32r/kernel/setup_m32104ut.c                  |  8 +++----
 arch/m32r/kernel/setup_m32700ut.c                  | 28 +++++++++++-----------
 arch/m32r/kernel/setup_mappi.c                     | 16 ++++++-------
 arch/m32r/kernel/setup_mappi2.c                    | 20 ++++++++--------
 arch/m32r/kernel/setup_mappi3.c                    | 20 ++++++++--------
 arch/m32r/kernel/setup_oaks32r.c                   | 12 +++++-----
 arch/m32r/kernel/setup_opsput.c                    | 28 +++++++++++-----------
 arch/m32r/kernel/setup_usrv.c                      | 18 +++++++-------
 arch/mips/au1000/common/irq.c                      | 20 ++++++++--------
 arch/mips/au1000/pb1200/irqmap.c                   |  2 +-
 arch/mips/ddb5xxx/ddb5477/irq_5477.c               |  2 +-
 arch/mips/dec/ioasic-irq.c                         |  4 ++--
 arch/mips/dec/kn02-irq.c                           |  2 +-
 arch/mips/gt64120/ev64120/irq.c                    |  2 +-
 arch/mips/ite-boards/generic/irq.c                 |  4 ++--
 arch/mips/jazz/irq.c                               |  2 +-
 arch/mips/jmr3927/rbhma3100/irq.c                  |  2 +-
 arch/mips/kernel/i8259.c                           |  4 ++--
 arch/mips/kernel/irq-msc01.c                       |  4 ++--
 arch/mips/kernel/irq-mv6434x.c                     |  2 +-
 arch/mips/kernel/irq-rm7000.c                      |  2 +-
 arch/mips/kernel/irq-rm9000.c                      |  4 ++--
 arch/mips/kernel/irq.c                             |  4 ++--
 arch/mips/kernel/irq_cpu.c                         |  4 ++--
 arch/mips/lasat/interrupt.c                        |  2 +-
 arch/mips/mips-boards/atlas/atlas_int.c            |  2 +-
 arch/mips/momentum/ocelot_c/cpci-irq.c             |  2 +-
 arch/mips/momentum/ocelot_c/uart-irq.c             |  4 ++--
 arch/mips/philips/pnx8550/common/int.c             | 10 ++++----
 arch/mips/sgi-ip22/ip22-eisa.c                     |  4 ++--
 arch/mips/sgi-ip22/ip22-int.c                      |  2 +-
 arch/mips/sgi-ip27/ip27-irq.c                      |  2 +-
 arch/mips/sgi-ip32/ip32-irq.c                      |  2 +-
 arch/mips/sibyte/bcm1480/irq.c                     |  4 ++--
 arch/mips/sibyte/sb1250/irq.c                      |  4 ++--
 arch/mips/sni/irq.c                                |  2 +-
 arch/mips/tx4927/common/tx4927_irq.c               |  4 ++--
 .../tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c | 14 +++++------
 arch/mips/tx4938/common/irq.c                      |  4 ++--
 arch/mips/tx4938/toshiba_rbtx4938/irq.c            |  2 +-
 arch/mips/vr41xx/common/icu.c                      |  4 ++--
 arch/mips/vr41xx/common/irq.c                      |  4 ++--
 arch/mips/vr41xx/common/vrc4173.c                  |  2 +-
 arch/mips/vr41xx/nec-cmbvr4133/irq.c               |  2 +-
 arch/parisc/kernel/irq.c                           | 10 ++++----
 arch/powerpc/kernel/crash.c                        |  4 ++--
 arch/powerpc/kernel/irq.c                          |  8 +++----
 arch/powerpc/platforms/cell/interrupt.c            |  4 ++--
 arch/powerpc/platforms/cell/spider-pic.c           |  4 ++--
 arch/powerpc/platforms/iseries/irq.c               |  6 ++---
 arch/powerpc/platforms/powermac/pic.c              |  4 ++--
 arch/powerpc/platforms/pseries/xics.c              |  8 +++----
 arch/powerpc/sysdev/i8259.c                        |  2 +-
 arch/powerpc/sysdev/ipic.c                         |  2 +-
 arch/powerpc/sysdev/mpic.c                         |  8 +++----
 arch/ppc/8xx_io/commproc.c                         |  2 +-
 arch/ppc/platforms/apus_setup.c                    |  4 ++--
 arch/ppc/platforms/sbc82xx.c                       |  2 +-
 arch/ppc/syslib/cpc700_pic.c                       |  4 ++--
 arch/ppc/syslib/cpm2_pic.c                         |  2 +-
 arch/ppc/syslib/gt64260_pic.c                      |  2 +-
 arch/ppc/syslib/m82xx_pci.c                        |  2 +-
 arch/ppc/syslib/m8xx_setup.c                       |  4 ++--
 arch/ppc/syslib/mpc52xx_pic.c                      |  4 ++--
 arch/ppc/syslib/mv64360_pic.c                      |  2 +-
 arch/ppc/syslib/open_pic.c                         |  4 ++--
 arch/ppc/syslib/open_pic2.c                        |  2 +-
 arch/ppc/syslib/ppc403_pic.c                       |  2 +-
 arch/ppc/syslib/ppc4xx_pic.c                       |  2 +-
 arch/ppc/syslib/xilinx_pic.c                       |  2 +-
 arch/sh/boards/adx/irq_maskreg.c                   |  2 +-
 arch/sh/boards/bigsur/irq.c                        |  4 ++--
 arch/sh/boards/cqreek/irq.c                        |  4 ++--
 arch/sh/boards/dreamcast/setup.c                   |  2 +-
 arch/sh/boards/ec3104/setup.c                      |  2 +-
 arch/sh/boards/harp/irq.c                          |  2 +-
 arch/sh/boards/mpc1211/setup.c                     |  2 +-
 arch/sh/boards/overdrive/irq.c                     |  2 +-
 arch/sh/boards/renesas/hs7751rvoip/irq.c           |  2 +-
 arch/sh/boards/renesas/rts7751r2d/irq.c            |  2 +-
 arch/sh/boards/renesas/systemh/irq.c               |  2 +-
 arch/sh/boards/se/73180/irq.c                      |  2 +-
 arch/sh/boards/superh/microdev/irq.c               |  2 +-
 arch/sh/cchips/hd6446x/hd64461/setup.c             |  2 +-
 arch/sh/cchips/hd6446x/hd64465/setup.c             |  2 +-
 arch/sh/cchips/voyagergx/irq.c                     |  2 +-
 arch/sh/kernel/cpu/irq/imask.c                     |  2 +-
 arch/sh/kernel/cpu/irq/intc2.c                     |  2 +-
 arch/sh/kernel/cpu/irq/ipr.c                       |  2 +-
 arch/sh/kernel/cpu/irq/pint.c                      |  2 +-
 arch/sh/kernel/irq.c                               |  2 +-
 arch/sh64/kernel/irq.c                             |  2 +-
 arch/sh64/kernel/irq_intc.c                        |  4 ++--
 arch/sh64/mach-cayman/irq.c                        |  2 +-
 arch/sparc64/kernel/irq.c                          | 10 ++++----
 arch/um/kernel/irq.c                               |  6 ++---
 arch/v850/kernel/irq.c                             |  6 ++---
 arch/x86_64/kernel/i8259.c                         |  6 ++---
 arch/x86_64/kernel/io_apic.c                       | 16 +++++++------
 arch/x86_64/kernel/irq.c                           |  6 ++---
 arch/xtensa/kernel/irq.c                           |  4 ++--
 drivers/char/vr41xx_giu.c                          |  4 ++--
 drivers/parisc/dino.c                              |  4 ++--
 drivers/parisc/eisa.c                              |  2 +-
 drivers/parisc/gsc.c                               |  8 +++----
 drivers/parisc/iosapic.c                           |  2 +-
 drivers/parisc/superio.c                           |  2 +-
 drivers/pci/msi.c                                  |  6 ++---
 drivers/pcmcia/hd64465_ss.c                        |  6 ++---
 include/asm-powerpc/hw_irq.h                       | 12 +++++-----
 include/linux/irq.h                                |  4 ++--
 kernel/irq/autoprobe.c                             | 10 ++++----
 kernel/irq/handle.c                                | 14 +++++------
 kernel/irq/manage.c                                | 24 +++++++++----------
 kernel/irq/migration.c                             |  8 +++----
 kernel/irq/proc.c                                  |  6 ++---
 kernel/irq/spurious.c                              |  4 ++--
 151 files changed, 384 insertions(+), 380 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index da677f829f7..ec9d243d42c 100644
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -49,7 +49,7 @@ select_smp_affinity(unsigned int irq)
 	static int last_cpu;
 	int cpu = last_cpu + 1;
 
-	if (!irq_desc[irq].handler->set_affinity || irq_user_affinity[irq])
+	if (!irq_desc[irq].chip->set_affinity || irq_user_affinity[irq])
 		return 1;
 
 	while (!cpu_possible(cpu))
@@ -57,7 +57,7 @@ select_smp_affinity(unsigned int irq)
 	last_cpu = cpu;
 
 	irq_affinity[irq] = cpumask_of_cpu(cpu);
-	irq_desc[irq].handler->set_affinity(irq, cpumask_of_cpu(cpu));
+	irq_desc[irq].chip->set_affinity(irq, cpumask_of_cpu(cpu));
 	return 0;
 }
 #endif /* CONFIG_SMP */
@@ -93,7 +93,7 @@ show_interrupts(struct seq_file *p, void *v)
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", kstat_cpu(j).irqs[irq]);
 #endif
-		seq_printf(p, " %14s", irq_desc[irq].handler->typename);
+		seq_printf(p, " %14s", irq_desc[irq].chip->typename);
 		seq_printf(p, "  %c%s",
 			(action->flags & SA_INTERRUPT)?'+':' ',
 			action->name);
diff --git a/arch/alpha/kernel/irq_alpha.c b/arch/alpha/kernel/irq_alpha.c
index 9d34ce26e5e..f20f2dff9c4 100644
--- a/arch/alpha/kernel/irq_alpha.c
+++ b/arch/alpha/kernel/irq_alpha.c
@@ -233,7 +233,7 @@ void __init
 init_rtc_irq(void)
 {
 	irq_desc[RTC_IRQ].status = IRQ_DISABLED;
-	irq_desc[RTC_IRQ].handler = &rtc_irq_type;
+	irq_desc[RTC_IRQ].chip = &rtc_irq_type;
 	setup_irq(RTC_IRQ, &timer_irqaction);
 }
 
diff --git a/arch/alpha/kernel/irq_i8259.c b/arch/alpha/kernel/irq_i8259.c
index b188683b83f..ac893bd4803 100644
--- a/arch/alpha/kernel/irq_i8259.c
+++ b/arch/alpha/kernel/irq_i8259.c
@@ -109,7 +109,7 @@ init_i8259a_irqs(void)
 
 	for (i = 0; i < 16; i++) {
 		irq_desc[i].status = IRQ_DISABLED;
-		irq_desc[i].handler = &i8259a_irq_type;
+		irq_desc[i].chip = &i8259a_irq_type;
 	}
 
 	setup_irq(2, &cascade);
diff --git a/arch/alpha/kernel/irq_pyxis.c b/arch/alpha/kernel/irq_pyxis.c
index 146a20b9e3d..3b581415bab 100644
--- a/arch/alpha/kernel/irq_pyxis.c
+++ b/arch/alpha/kernel/irq_pyxis.c
@@ -120,7 +120,7 @@ init_pyxis_irqs(unsigned long ignore_mask)
 		if ((ignore_mask >> i) & 1)
 			continue;
 		irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i].handler = &pyxis_irq_type;
+		irq_desc[i].chip = &pyxis_irq_type;
 	}
 
 	setup_irq(16+7, &isa_cascade_irqaction);
diff --git a/arch/alpha/kernel/irq_srm.c b/arch/alpha/kernel/irq_srm.c
index 0a87e466918..8e4d121f84c 100644
--- a/arch/alpha/kernel/irq_srm.c
+++ b/arch/alpha/kernel/irq_srm.c
@@ -67,7 +67,7 @@ init_srm_irqs(long max, unsigned long ignore_mask)
 		if (i < 64 && ((ignore_mask >> i) & 1))
 			continue;
 		irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i].handler = &srm_irq_type;
+		irq_desc[i].chip = &srm_irq_type;
 	}
 }
 
diff --git a/arch/alpha/kernel/sys_alcor.c b/arch/alpha/kernel/sys_alcor.c
index d7f0e97fe56..1a1a2c7a3d9 100644
--- a/arch/alpha/kernel/sys_alcor.c
+++ b/arch/alpha/kernel/sys_alcor.c
@@ -144,7 +144,7 @@ alcor_init_irq(void)
 		if (i >= 16+20 && i <= 16+30)
 			continue;
 		irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i].handler = &alcor_irq_type;
+		irq_desc[i].chip = &alcor_irq_type;
 	}
 	i8259a_irq_type.ack = alcor_isa_mask_and_ack_irq;
 
diff --git a/arch/alpha/kernel/sys_cabriolet.c b/arch/alpha/kernel/sys_cabriolet.c
index 8e3374d34c9..8c9e443d93a 100644
--- a/arch/alpha/kernel/sys_cabriolet.c
+++ b/arch/alpha/kernel/sys_cabriolet.c
@@ -124,7 +124,7 @@ common_init_irq(void (*srm_dev_int)(unsigned long v, struct pt_regs *r))
 
 		for (i = 16; i < 35; ++i) {
 			irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
-			irq_desc[i].handler = &cabriolet_irq_type;
+			irq_desc[i].chip = &cabriolet_irq_type;
 		}
 	}
 
diff --git a/arch/alpha/kernel/sys_dp264.c b/arch/alpha/kernel/sys_dp264.c
index d5da6b1b28e..b28c8f1c6e1 100644
--- a/arch/alpha/kernel/sys_dp264.c
+++ b/arch/alpha/kernel/sys_dp264.c
@@ -300,7 +300,7 @@ init_tsunami_irqs(struct hw_interrupt_type * ops, int imin, int imax)
 	long i;
 	for (i = imin; i <= imax; ++i) {
 		irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i].handler = ops;
+		irq_desc[i].chip = ops;
 	}
 }
 
diff --git a/arch/alpha/kernel/sys_eb64p.c b/arch/alpha/kernel/sys_eb64p.c
index 61a79c354f0..aeb8e027790 100644
--- a/arch/alpha/kernel/sys_eb64p.c
+++ b/arch/alpha/kernel/sys_eb64p.c
@@ -137,7 +137,7 @@ eb64p_init_irq(void)
 
 	for (i = 16; i < 32; ++i) {
 		irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i].handler = &eb64p_irq_type;
+		irq_desc[i].chip = &eb64p_irq_type;
 	}		
 
 	common_init_isa_dma();
diff --git a/arch/alpha/kernel/sys_eiger.c b/arch/alpha/kernel/sys_eiger.c
index bd6e5f0e43c..64a785baf53 100644
--- a/arch/alpha/kernel/sys_eiger.c
+++ b/arch/alpha/kernel/sys_eiger.c
@@ -154,7 +154,7 @@ eiger_init_irq(void)
 
 	for (i = 16; i < 128; ++i) {
 		irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i].handler = &eiger_irq_type;
+		irq_desc[i].chip = &eiger_irq_type;
 	}
 }
 
diff --git a/arch/alpha/kernel/sys_jensen.c b/arch/alpha/kernel/sys_jensen.c
index fcabb7c96a1..0148e095638 100644
--- a/arch/alpha/kernel/sys_jensen.c
+++ b/arch/alpha/kernel/sys_jensen.c
@@ -206,11 +206,11 @@ jensen_init_irq(void)
 {
 	init_i8259a_irqs();
 
-	irq_desc[1].handler = &jensen_local_irq_type;
-	irq_desc[4].handler = &jensen_local_irq_type;
-	irq_desc[3].handler = &jensen_local_irq_type;
-	irq_desc[7].handler = &jensen_local_irq_type;
-	irq_desc[9].handler = &jensen_local_irq_type;
+	irq_desc[1].chip = &jensen_local_irq_type;
+	irq_desc[4].chip = &jensen_local_irq_type;
+	irq_desc[3].chip = &jensen_local_irq_type;
+	irq_desc[7].chip = &jensen_local_irq_type;
+	irq_desc[9].chip = &jensen_local_irq_type;
 
 	common_init_isa_dma();
 }
diff --git a/arch/alpha/kernel/sys_marvel.c b/arch/alpha/kernel/sys_marvel.c
index e32fee50522..36d21595437 100644
--- a/arch/alpha/kernel/sys_marvel.c
+++ b/arch/alpha/kernel/sys_marvel.c
@@ -303,7 +303,7 @@ init_io7_irqs(struct io7 *io7,
 	/* Set up the lsi irqs.  */
 	for (i = 0; i < 128; ++i) {
 		irq_desc[base + i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[base + i].handler = lsi_ops;
+		irq_desc[base + i].chip = lsi_ops;
 	}
 
 	/* Disable the implemented irqs in hardware.  */
@@ -317,7 +317,7 @@ init_io7_irqs(struct io7 *io7,
 	/* Set up the msi irqs.  */
 	for (i = 128; i < (128 + 512); ++i) {
 		irq_desc[base + i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[base + i].handler = msi_ops;
+		irq_desc[base + i].chip = msi_ops;
 	}
 
 	for (i = 0; i < 16; ++i)
@@ -335,7 +335,7 @@ marvel_init_irq(void)
 	/* Reserve the legacy irqs.  */
 	for (i = 0; i < 16; ++i) {
 		irq_desc[i].status = IRQ_DISABLED;
-		irq_desc[i].handler = &marvel_legacy_irq_type;
+		irq_desc[i].chip = &marvel_legacy_irq_type;
 	}
 
 	/* Init the io7 irqs.  */
diff --git a/arch/alpha/kernel/sys_mikasa.c b/arch/alpha/kernel/sys_mikasa.c
index d78a0daa616..b741600e376 100644
--- a/arch/alpha/kernel/sys_mikasa.c
+++ b/arch/alpha/kernel/sys_mikasa.c
@@ -117,7 +117,7 @@ mikasa_init_irq(void)
 
 	for (i = 16; i < 32; ++i) {
 		irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i].handler = &mikasa_irq_type;
+		irq_desc[i].chip = &mikasa_irq_type;
 	}
 
 	init_i8259a_irqs();
diff --git a/arch/alpha/kernel/sys_noritake.c b/arch/alpha/kernel/sys_noritake.c
index 65061f5d741..55db02d318d 100644
--- a/arch/alpha/kernel/sys_noritake.c
+++ b/arch/alpha/kernel/sys_noritake.c
@@ -139,7 +139,7 @@ noritake_init_irq(void)
 
 	for (i = 16; i < 48; ++i) {
 		irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i].handler = &noritake_irq_type;
+		irq_desc[i].chip = &noritake_irq_type;
 	}
 
 	init_i8259a_irqs();
diff --git a/arch/alpha/kernel/sys_rawhide.c b/arch/alpha/kernel/sys_rawhide.c
index 05888a02a60..949607e3d6f 100644
--- a/arch/alpha/kernel/sys_rawhide.c
+++ b/arch/alpha/kernel/sys_rawhide.c
@@ -180,7 +180,7 @@ rawhide_init_irq(void)
 
 	for (i = 16; i < 128; ++i) {
 		irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i].handler = &rawhide_irq_type;
+		irq_desc[i].chip = &rawhide_irq_type;
 	}
 
 	init_i8259a_irqs();
diff --git a/arch/alpha/kernel/sys_rx164.c b/arch/alpha/kernel/sys_rx164.c
index 58404243057..6ae50605263 100644
--- a/arch/alpha/kernel/sys_rx164.c
+++ b/arch/alpha/kernel/sys_rx164.c
@@ -117,7 +117,7 @@ rx164_init_irq(void)
 	rx164_update_irq_hw(0);
 	for (i = 16; i < 40; ++i) {
 		irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i].handler = &rx164_irq_type;
+		irq_desc[i].chip = &rx164_irq_type;
 	}
 
 	init_i8259a_irqs();
diff --git a/arch/alpha/kernel/sys_sable.c b/arch/alpha/kernel/sys_sable.c
index a7ff84474ac..24dea40c9bf 100644
--- a/arch/alpha/kernel/sys_sable.c
+++ b/arch/alpha/kernel/sys_sable.c
@@ -537,7 +537,7 @@ sable_lynx_init_irq(int nr_irqs)
 
 	for (i = 0; i < nr_irqs; ++i) {
 		irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i].handler = &sable_lynx_irq_type;
+		irq_desc[i].chip = &sable_lynx_irq_type;
 	}
 
 	common_init_isa_dma();
diff --git a/arch/alpha/kernel/sys_takara.c b/arch/alpha/kernel/sys_takara.c
index 7955bdfc2db..2c75cd1fd81 100644
--- a/arch/alpha/kernel/sys_takara.c
+++ b/arch/alpha/kernel/sys_takara.c
@@ -154,7 +154,7 @@ takara_init_irq(void)
 
 	for (i = 16; i < 128; ++i) {
 		irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i].handler = &takara_irq_type;
+		irq_desc[i].chip = &takara_irq_type;
 	}
 
 	common_init_isa_dma();
diff --git a/arch/alpha/kernel/sys_titan.c b/arch/alpha/kernel/sys_titan.c
index 2551fb49ae0..13f3ed8ed7a 100644
--- a/arch/alpha/kernel/sys_titan.c
+++ b/arch/alpha/kernel/sys_titan.c
@@ -189,7 +189,7 @@ init_titan_irqs(struct hw_interrupt_type * ops, int imin, int imax)
 	long i;
 	for (i = imin; i <= imax; ++i) {
 		irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i].handler = ops;
+		irq_desc[i].chip = ops;
 	}
 }
 
diff --git a/arch/alpha/kernel/sys_wildfire.c b/arch/alpha/kernel/sys_wildfire.c
index 1553f470246..22c5798fe08 100644
--- a/arch/alpha/kernel/sys_wildfire.c
+++ b/arch/alpha/kernel/sys_wildfire.c
@@ -199,14 +199,14 @@ wildfire_init_irq_per_pca(int qbbno, int pcano)
 		if (i == 2)
 			continue;
 		irq_desc[i+irq_bias].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i+irq_bias].handler = &wildfire_irq_type;
+		irq_desc[i+irq_bias].chip = &wildfire_irq_type;
 	}
 
 	irq_desc[36+irq_bias].status = IRQ_DISABLED | IRQ_LEVEL;
-	irq_desc[36+irq_bias].handler = &wildfire_irq_type;
+	irq_desc[36+irq_bias].chip = &wildfire_irq_type;
 	for (i = 40; i < 64; ++i) {
 		irq_desc[i+irq_bias].status = IRQ_DISABLED | IRQ_LEVEL;
-		irq_desc[i+irq_bias].handler = &wildfire_irq_type;
+		irq_desc[i+irq_bias].chip = &wildfire_irq_type;
 	}
 
 	setup_irq(32+irq_bias, &isa_enable);	
diff --git a/arch/cris/arch-v10/kernel/irq.c b/arch/cris/arch-v10/kernel/irq.c
index 4b368a12201..2d5be93b519 100644
--- a/arch/cris/arch-v10/kernel/irq.c
+++ b/arch/cris/arch-v10/kernel/irq.c
@@ -172,7 +172,7 @@ init_IRQ(void)
 
 	/* Initialize IRQ handler descriptiors. */
 	for(i = 2; i < NR_IRQS; i++) {
-		irq_desc[i].handler = &crisv10_irq_type;
+		irq_desc[i].chip = &crisv10_irq_type;
 		set_int_vector(i, interrupt[i]);
 	}
 
diff --git a/arch/cris/arch-v32/kernel/irq.c b/arch/cris/arch-v32/kernel/irq.c
index c78cc268513..06260874f01 100644
--- a/arch/cris/arch-v32/kernel/irq.c
+++ b/arch/cris/arch-v32/kernel/irq.c
@@ -369,7 +369,7 @@ init_IRQ(void)
 
 	/* Point all IRQ's to bad handlers. */
 	for (i = FIRST_IRQ, j = 0; j < NR_IRQS; i++, j++) {
-		irq_desc[j].handler = &crisv32_irq_type;
+		irq_desc[j].chip = &crisv32_irq_type;
 		set_exception_vector(i, interrupt[j]);
 	}
 
diff --git a/arch/cris/kernel/irq.c b/arch/cris/kernel/irq.c
index b504def3e34..6547bb64636 100644
--- a/arch/cris/kernel/irq.c
+++ b/arch/cris/kernel/irq.c
@@ -69,7 +69,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 #endif
-		seq_printf(p, " %14s", irq_desc[i].handler->typename);
+		seq_printf(p, " %14s", irq_desc[i].chip->typename);
 		seq_printf(p, "  %s", action->name);
 
 		for (action=action->next; action; action = action->next)
diff --git a/arch/i386/kernel/i8259.c b/arch/i386/kernel/i8259.c
index c1a42feba28..3c6063671a9 100644
--- a/arch/i386/kernel/i8259.c
+++ b/arch/i386/kernel/i8259.c
@@ -132,7 +132,7 @@ void make_8259A_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
 	io_apic_irqs &= ~(1<<irq);
-	irq_desc[irq].handler = &i8259A_irq_type;
+	irq_desc[irq].chip = &i8259A_irq_type;
 	enable_irq(irq);
 }
 
@@ -386,12 +386,12 @@ void __init init_ISA_irqs (void)
 			/*
 			 * 16 old-style INTA-cycle interrupts:
 			 */
-			irq_desc[i].handler = &i8259A_irq_type;
+			irq_desc[i].chip = &i8259A_irq_type;
 		} else {
 			/*
 			 * 'high' PCI IRQs filled in on demand
 			 */
-			irq_desc[i].handler = &no_irq_type;
+			irq_desc[i].chip = &no_irq_type;
 		}
 	}
 }
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 72ae414e4d4..4a74b696c6a 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -1205,15 +1205,17 @@ static struct hw_interrupt_type ioapic_edge_type;
 #define IOAPIC_EDGE	0
 #define IOAPIC_LEVEL	1
 
-static inline void ioapic_register_intr(int irq, int vector, unsigned long trigger)
+static void ioapic_register_intr(int irq, int vector, unsigned long trigger)
 {
-	unsigned idx = use_pci_vector() && !platform_legacy_irq(irq) ? vector : irq;
+	unsigned idx;
+
+	idx = use_pci_vector() && !platform_legacy_irq(irq) ? vector : irq;
 
 	if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) ||
 			trigger == IOAPIC_LEVEL)
-		irq_desc[idx].handler = &ioapic_level_type;
+		irq_desc[idx].chip = &ioapic_level_type;
 	else
-		irq_desc[idx].handler = &ioapic_edge_type;
+		irq_desc[idx].chip = &ioapic_edge_type;
 	set_intr_gate(vector, interrupt[idx]);
 }
 
@@ -1325,7 +1327,7 @@ static void __init setup_ExtINT_IRQ0_pin(unsigned int apic, unsigned int pin, in
 	 * The timer IRQ doesn't have to know that behind the
 	 * scene we have a 8259A-master in AEOI mode ...
 	 */
-	irq_desc[0].handler = &ioapic_edge_type;
+	irq_desc[0].chip = &ioapic_edge_type;
 
 	/*
 	 * Add it to the IO-APIC irq-routing table:
@@ -2135,7 +2137,7 @@ static inline void init_IO_APIC_traps(void)
 				make_8259A_irq(irq);
 			else
 				/* Strange. Oh, well.. */
-				irq_desc[irq].handler = &no_irq_type;
+				irq_desc[irq].chip = &no_irq_type;
 		}
 	}
 }
@@ -2351,7 +2353,7 @@ static inline void check_timer(void)
 	printk(KERN_INFO "...trying to set up timer as Virtual Wire IRQ...");
 
 	disable_8259A_irq(0);
-	irq_desc[0].handler = &lapic_irq_type;
+	irq_desc[0].chip = &lapic_irq_type;
 	apic_write_around(APIC_LVT0, APIC_DM_FIXED | vector);	/* Fixed mode */
 	enable_8259A_irq(0);
 
diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
index 9eec9435318..b942a5918da 100644
--- a/arch/i386/kernel/irq.c
+++ b/arch/i386/kernel/irq.c
@@ -249,7 +249,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 #endif
-		seq_printf(p, " %14s", irq_desc[i].handler->typename);
+		seq_printf(p, " %14s", irq_desc[i].chip->typename);
 		seq_printf(p, "  %s", action->name);
 
 		for (action=action->next; action; action = action->next)
@@ -296,8 +296,8 @@ void fixup_irqs(cpumask_t map)
 			printk("Breaking affinity for irq %i\n", irq);
 			mask = map;
 		}
-		if (irq_desc[irq].handler->set_affinity)
-			irq_desc[irq].handler->set_affinity(irq, mask);
+		if (irq_desc[irq].chip->set_affinity)
+			irq_desc[irq].chip->set_affinity(irq, mask);
 		else if (irq_desc[irq].action && !(warned++))
 			printk("Cannot set affinity for irq %i\n", irq);
 	}
diff --git a/arch/i386/mach-visws/visws_apic.c b/arch/i386/mach-visws/visws_apic.c
index 3e64fb72129..c418521dd55 100644
--- a/arch/i386/mach-visws/visws_apic.c
+++ b/arch/i386/mach-visws/visws_apic.c
@@ -278,22 +278,22 @@ void init_VISWS_APIC_irqs(void)
 		irq_desc[i].depth = 1;
 
 		if (i == 0) {
-			irq_desc[i].handler = &cobalt_irq_type;
+			irq_desc[i].chip = &cobalt_irq_type;
 		}
 		else if (i == CO_IRQ_IDE0) {
-			irq_desc[i].handler = &cobalt_irq_type;
+			irq_desc[i].chip = &cobalt_irq_type;
 		}
 		else if (i == CO_IRQ_IDE1) {
-			irq_desc[i].handler = &cobalt_irq_type;
+			irq_desc[i].chip = &cobalt_irq_type;
 		}
 		else if (i == CO_IRQ_8259) {
-			irq_desc[i].handler = &piix4_master_irq_type;
+			irq_desc[i].chip = &piix4_master_irq_type;
 		}
 		else if (i < CO_IRQ_APIC0) {
-			irq_desc[i].handler = &piix4_virtual_irq_type;
+			irq_desc[i].chip = &piix4_virtual_irq_type;
 		}
 		else if (IS_CO_APIC(i)) {
-			irq_desc[i].handler = &cobalt_irq_type;
+			irq_desc[i].chip = &cobalt_irq_type;
 		}
 	}
 
diff --git a/arch/i386/mach-voyager/voyager_smp.c b/arch/i386/mach-voyager/voyager_smp.c
index 8242af9ebc6..5b8b579a079 100644
--- a/arch/i386/mach-voyager/voyager_smp.c
+++ b/arch/i386/mach-voyager/voyager_smp.c
@@ -1419,7 +1419,7 @@ smp_intr_init(void)
 	 * This is for later: first 16 correspond to PC IRQs; next 16
 	 * are Primary MC IRQs and final 16 are Secondary MC IRQs */
 	for(i = 0; i < 48; i++)
-		irq_desc[i].handler = &vic_irq_type;
+		irq_desc[i].chip = &vic_irq_type;
 }
 
 /* send a CPI at level cpi to a set of cpus in cpuset (set 1 bit per
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index d58c1c5c903..abb4cb1c831 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -660,13 +660,13 @@ register_intr (unsigned int gsi, int vector, unsigned char delivery,
 		irq_type = &irq_type_iosapic_level;
 
 	idesc = irq_descp(vector);
-	if (idesc->handler != irq_type) {
-		if (idesc->handler != &no_irq_type)
+	if (idesc->chip != irq_type) {
+		if (idesc->chip != &no_irq_type)
 			printk(KERN_WARNING
 			       "%s: changing vector %d from %s to %s\n",
 			       __FUNCTION__, vector,
-			       idesc->handler->typename, irq_type->typename);
-		idesc->handler = irq_type;
+			       idesc->chip->typename, irq_type->typename);
+		idesc->chip = irq_type;
 	}
 	return 0;
 }
@@ -903,7 +903,7 @@ iosapic_unregister_intr (unsigned int gsi)
 			BUG_ON(iosapic_intr_info[vector].count);
 
 			/* Clear the interrupt controller descriptor */
-			idesc->handler = &no_irq_type;
+			idesc->chip = &no_irq_type;
 
 			/* Clear the interrupt information */
 			memset(&iosapic_intr_info[vector], 0,
diff --git a/arch/ia64/kernel/irq.c b/arch/ia64/kernel/irq.c
index 9c72ea3f643..2645153dba8 100644
--- a/arch/ia64/kernel/irq.c
+++ b/arch/ia64/kernel/irq.c
@@ -76,7 +76,7 @@ int show_interrupts(struct seq_file *p, void *v)
 			seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 		}
 #endif
-		seq_printf(p, " %14s", irq_desc[i].handler->typename);
+		seq_printf(p, " %14s", irq_desc[i].chip->typename);
 		seq_printf(p, "  %s", action->name);
 
 		for (action=action->next; action; action = action->next)
@@ -144,15 +144,15 @@ static void migrate_irqs(void)
 			/*
 			 * Al three are essential, currently WARN_ON.. maybe panic?
 			 */
-			if (desc->handler && desc->handler->disable &&
-				desc->handler->enable && desc->handler->set_affinity) {
-				desc->handler->disable(irq);
-				desc->handler->set_affinity(irq, mask);
-				desc->handler->enable(irq);
+			if (desc->chip && desc->chip->disable &&
+				desc->chip->enable && desc->chip->set_affinity) {
+				desc->chip->disable(irq);
+				desc->chip->set_affinity(irq, mask);
+				desc->chip->enable(irq);
 			} else {
-				WARN_ON((!(desc->handler) || !(desc->handler->disable) ||
-						!(desc->handler->enable) ||
-						!(desc->handler->set_affinity)));
+				WARN_ON((!(desc->chip) || !(desc->chip->disable) ||
+						!(desc->chip->enable) ||
+						!(desc->chip->set_affinity)));
 			}
 		}
 	}
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index ef9a2b49307..6d8fc9498ed 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -251,7 +251,7 @@ register_percpu_irq (ia64_vector vec, struct irqaction *action)
 		if (irq_to_vector(irq) == vec) {
 			desc = irq_descp(irq);
 			desc->status |= IRQ_PER_CPU;
-			desc->handler = &irq_type_ia64_lsapic;
+			desc->chip = &irq_type_ia64_lsapic;
 			if (action)
 				setup_irq(irq, action);
 		}
diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index 44e9547878a..d6928805559 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -684,9 +684,9 @@ int migrate_platform_irqs(unsigned int cpu)
 			 * polling before making changes.
 			 */
 			if (desc) {
-				desc->handler->disable(ia64_cpe_irq);
-				desc->handler->set_affinity(ia64_cpe_irq, mask);
-				desc->handler->enable(ia64_cpe_irq);
+				desc->chip->disable(ia64_cpe_irq);
+				desc->chip->set_affinity(ia64_cpe_irq, mask);
+				desc->chip->enable(ia64_cpe_irq);
 				printk ("Re-targetting CPEI to cpu %d\n", new_cpei_cpu);
 			}
 		}
diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c
index 677c6c0fd66..7bb6ad188ba 100644
--- a/arch/ia64/sn/kernel/irq.c
+++ b/arch/ia64/sn/kernel/irq.c
@@ -225,8 +225,8 @@ void sn_irq_init(void)
 	ia64_last_device_vector = IA64_SN2_LAST_DEVICE_VECTOR;
 
 	for (i = 0; i < NR_IRQS; i++) {
-		if (base_desc[i].handler == &no_irq_type) {
-			base_desc[i].handler = &irq_type_sn;
+		if (base_desc[i].chip == &no_irq_type) {
+			base_desc[i].chip = &irq_type_sn;
 		}
 	}
 }
diff --git a/arch/m32r/kernel/irq.c b/arch/m32r/kernel/irq.c
index a4634b06f67..3841861df6a 100644
--- a/arch/m32r/kernel/irq.c
+++ b/arch/m32r/kernel/irq.c
@@ -54,7 +54,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 #endif
-		seq_printf(p, " %14s", irq_desc[i].handler->typename);
+		seq_printf(p, " %14s", irq_desc[i].chip->typename);
 		seq_printf(p, "  %s", action->name);
 
 		for (action=action->next; action; action = action->next)
diff --git a/arch/m32r/kernel/setup_m32104ut.c b/arch/m32r/kernel/setup_m32104ut.c
index 6328e1357a8..f9f56c27019 100644
--- a/arch/m32r/kernel/setup_m32104ut.c
+++ b/arch/m32r/kernel/setup_m32104ut.c
@@ -87,7 +87,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_SMC91X)
 	/* INT#0: LAN controller on M32104UT-LAN (SMC91C111)*/
 	irq_desc[M32R_IRQ_INT0].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT0].handler = &m32104ut_irq_type;
+	irq_desc[M32R_IRQ_INT0].chip = &m32104ut_irq_type;
 	irq_desc[M32R_IRQ_INT0].action = 0;
 	irq_desc[M32R_IRQ_INT0].depth = 1;
 	icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD11; /* "H" level sense */
@@ -96,7 +96,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &m32104ut_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &m32104ut_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -105,7 +105,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SERIAL_M32R_SIO
 	/* SIO0_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &m32104ut_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &m32104ut_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = M32R_ICUCR_IEN;
@@ -113,7 +113,7 @@ void __init init_IRQ(void)
 
 	/* SIO0_S : uart send data */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &m32104ut_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &m32104ut_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = M32R_ICUCR_IEN;
diff --git a/arch/m32r/kernel/setup_m32700ut.c b/arch/m32r/kernel/setup_m32700ut.c
index fad1fc99bb2..b6ab00eff58 100644
--- a/arch/m32r/kernel/setup_m32700ut.c
+++ b/arch/m32r/kernel/setup_m32700ut.c
@@ -301,7 +301,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_SMC91X)
 	/* INT#0: LAN controller on M32700UT-LAN (SMC91C111)*/
 	irq_desc[M32700UT_LAN_IRQ_LAN].status = IRQ_DISABLED;
-	irq_desc[M32700UT_LAN_IRQ_LAN].handler = &m32700ut_lanpld_irq_type;
+	irq_desc[M32700UT_LAN_IRQ_LAN].chip = &m32700ut_lanpld_irq_type;
 	irq_desc[M32700UT_LAN_IRQ_LAN].action = 0;
 	irq_desc[M32700UT_LAN_IRQ_LAN].depth = 1;	/* disable nested irq */
 	lanpld_icu_data[irq2lanpldirq(M32700UT_LAN_IRQ_LAN)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD02;	/* "H" edge sense */
@@ -310,7 +310,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &m32700ut_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &m32700ut_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -318,7 +318,7 @@ void __init init_IRQ(void)
 
 	/* SIO0 : receive */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &m32700ut_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &m32700ut_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
@@ -326,7 +326,7 @@ void __init init_IRQ(void)
 
 	/* SIO0 : send */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &m32700ut_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &m32700ut_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
@@ -334,7 +334,7 @@ void __init init_IRQ(void)
 
 	/* SIO1 : receive */
 	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_R].handler = &m32700ut_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &m32700ut_irq_type;
 	irq_desc[M32R_IRQ_SIO1_R].action = 0;
 	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
 	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
@@ -342,7 +342,7 @@ void __init init_IRQ(void)
 
 	/* SIO1 : send */
 	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_S].handler = &m32700ut_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &m32700ut_irq_type;
 	irq_desc[M32R_IRQ_SIO1_S].action = 0;
 	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
 	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
@@ -350,7 +350,7 @@ void __init init_IRQ(void)
 
 	/* DMA1 : */
 	irq_desc[M32R_IRQ_DMA1].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_DMA1].handler = &m32700ut_irq_type;
+	irq_desc[M32R_IRQ_DMA1].chip = &m32700ut_irq_type;
 	irq_desc[M32R_IRQ_DMA1].action = 0;
 	irq_desc[M32R_IRQ_DMA1].depth = 1;
 	icu_data[M32R_IRQ_DMA1].icucr = 0;
@@ -359,7 +359,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SERIAL_M32R_PLDSIO
 	/* INT#1: SIO0 Receive on PLD */
 	irq_desc[PLD_IRQ_SIO0_RCV].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_SIO0_RCV].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_SIO0_RCV].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_SIO0_RCV].action = 0;
 	irq_desc[PLD_IRQ_SIO0_RCV].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_SIO0_RCV)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD03;
@@ -367,7 +367,7 @@ void __init init_IRQ(void)
 
 	/* INT#1: SIO0 Send on PLD */
 	irq_desc[PLD_IRQ_SIO0_SND].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_SIO0_SND].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_SIO0_SND].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_SIO0_SND].action = 0;
 	irq_desc[PLD_IRQ_SIO0_SND].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_SIO0_SND)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD03;
@@ -376,7 +376,7 @@ void __init init_IRQ(void)
 
 	/* INT#1: CFC IREQ on PLD */
 	irq_desc[PLD_IRQ_CFIREQ].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFIREQ].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_CFIREQ].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_CFIREQ].action = 0;
 	irq_desc[PLD_IRQ_CFIREQ].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_CFIREQ)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD01;	/* 'L' level sense */
@@ -384,7 +384,7 @@ void __init init_IRQ(void)
 
 	/* INT#1: CFC Insert on PLD */
 	irq_desc[PLD_IRQ_CFC_INSERT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFC_INSERT].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_CFC_INSERT].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_CFC_INSERT].action = 0;
 	irq_desc[PLD_IRQ_CFC_INSERT].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_CFC_INSERT)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD00;	/* 'L' edge sense */
@@ -392,7 +392,7 @@ void __init init_IRQ(void)
 
 	/* INT#1: CFC Eject on PLD */
 	irq_desc[PLD_IRQ_CFC_EJECT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFC_EJECT].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_CFC_EJECT].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_CFC_EJECT].action = 0;
 	irq_desc[PLD_IRQ_CFC_EJECT].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_CFC_EJECT)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD02;	/* 'H' edge sense */
@@ -416,7 +416,7 @@ void __init init_IRQ(void)
 	outw(USBCR_OTGS, USBCR); 	/* USBCR: non-OTG */
 
     irq_desc[M32700UT_LCD_IRQ_USB_INT1].status = IRQ_DISABLED;
-    irq_desc[M32700UT_LCD_IRQ_USB_INT1].handler = &m32700ut_lcdpld_irq_type;
+    irq_desc[M32700UT_LCD_IRQ_USB_INT1].chip = &m32700ut_lcdpld_irq_type;
     irq_desc[M32700UT_LCD_IRQ_USB_INT1].action = 0;
     irq_desc[M32700UT_LCD_IRQ_USB_INT1].depth = 1;
     lcdpld_icu_data[irq2lcdpldirq(M32700UT_LCD_IRQ_USB_INT1)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD01;	/* "L" level sense */
@@ -434,7 +434,7 @@ void __init init_IRQ(void)
 	 * INT3# is used for AR
 	 */
 	irq_desc[M32R_IRQ_INT3].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT3].handler = &m32700ut_irq_type;
+	irq_desc[M32R_IRQ_INT3].chip = &m32700ut_irq_type;
 	irq_desc[M32R_IRQ_INT3].action = 0;
 	irq_desc[M32R_IRQ_INT3].depth = 1;
 	icu_data[M32R_IRQ_INT3].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
diff --git a/arch/m32r/kernel/setup_mappi.c b/arch/m32r/kernel/setup_mappi.c
index 00f253209cb..c268044185f 100644
--- a/arch/m32r/kernel/setup_mappi.c
+++ b/arch/m32r/kernel/setup_mappi.c
@@ -86,7 +86,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_NE2000
 	/* INT0 : LAN controller (RTL8019AS) */
 	irq_desc[M32R_IRQ_INT0].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT0].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_INT0].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_INT0].action = 0;
 	irq_desc[M32R_IRQ_INT0].depth = 1;
 	icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
@@ -95,7 +95,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -104,7 +104,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SERIAL_M32R_SIO
 	/* SIO0_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
@@ -112,7 +112,7 @@ void __init init_IRQ(void)
 
 	/* SIO0_S : uart send data */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
@@ -120,7 +120,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_R].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO1_R].action = 0;
 	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
 	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
@@ -128,7 +128,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_S : uart send data */
 	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_S].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO1_S].action = 0;
 	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
 	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
@@ -138,7 +138,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_M32R_PCC)
 	/* INT1 : pccard0 interrupt */
 	irq_desc[M32R_IRQ_INT1].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT1].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_INT1].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_INT1].action = 0;
 	irq_desc[M32R_IRQ_INT1].depth = 1;
 	icu_data[M32R_IRQ_INT1].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD00;
@@ -146,7 +146,7 @@ void __init init_IRQ(void)
 
 	/* INT2 : pccard1 interrupt */
 	irq_desc[M32R_IRQ_INT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT2].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_INT2].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_INT2].action = 0;
 	irq_desc[M32R_IRQ_INT2].depth = 1;
 	icu_data[M32R_IRQ_INT2].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD00;
diff --git a/arch/m32r/kernel/setup_mappi2.c b/arch/m32r/kernel/setup_mappi2.c
index eebc9d8b4e7..bd2327d5cca 100644
--- a/arch/m32r/kernel/setup_mappi2.c
+++ b/arch/m32r/kernel/setup_mappi2.c
@@ -87,7 +87,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_SMC91X)
 	/* INT0 : LAN controller (SMC91111) */
 	irq_desc[M32R_IRQ_INT0].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT0].handler = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_INT0].chip = &mappi2_irq_type;
 	irq_desc[M32R_IRQ_INT0].action = 0;
 	irq_desc[M32R_IRQ_INT0].depth = 1;
 	icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
@@ -96,7 +96,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &mappi2_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -105,7 +105,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SERIAL_M32R_SIO
 	/* SIO0_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &mappi2_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
@@ -113,14 +113,14 @@ void __init init_IRQ(void)
 
 	/* SIO0_S : uart send data */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &mappi2_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
 	disable_mappi2_irq(M32R_IRQ_SIO0_S);
 	/* SIO1_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_R].handler = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &mappi2_irq_type;
 	irq_desc[M32R_IRQ_SIO1_R].action = 0;
 	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
 	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
@@ -128,7 +128,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_S : uart send data */
 	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_S].handler = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &mappi2_irq_type;
 	irq_desc[M32R_IRQ_SIO1_S].action = 0;
 	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
 	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
@@ -138,7 +138,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_USB)
 	/* INT1 : USB Host controller interrupt */
 	irq_desc[M32R_IRQ_INT1].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT1].handler = &mappi2_irq_type;
+	irq_desc[M32R_IRQ_INT1].chip = &mappi2_irq_type;
 	irq_desc[M32R_IRQ_INT1].action = 0;
 	irq_desc[M32R_IRQ_INT1].depth = 1;
 	icu_data[M32R_IRQ_INT1].icucr = M32R_ICUCR_ISMOD01;
@@ -147,7 +147,7 @@ void __init init_IRQ(void)
 
 	/* ICUCR40: CFC IREQ */
 	irq_desc[PLD_IRQ_CFIREQ].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFIREQ].handler = &mappi2_irq_type;
+	irq_desc[PLD_IRQ_CFIREQ].chip = &mappi2_irq_type;
 	irq_desc[PLD_IRQ_CFIREQ].action = 0;
 	irq_desc[PLD_IRQ_CFIREQ].depth = 1;	/* disable nested irq */
 	icu_data[PLD_IRQ_CFIREQ].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD01;
@@ -156,7 +156,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_M32R_CFC)
 	/* ICUCR41: CFC Insert */
 	irq_desc[PLD_IRQ_CFC_INSERT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFC_INSERT].handler = &mappi2_irq_type;
+	irq_desc[PLD_IRQ_CFC_INSERT].chip = &mappi2_irq_type;
 	irq_desc[PLD_IRQ_CFC_INSERT].action = 0;
 	irq_desc[PLD_IRQ_CFC_INSERT].depth = 1;	/* disable nested irq */
 	icu_data[PLD_IRQ_CFC_INSERT].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD00;
@@ -164,7 +164,7 @@ void __init init_IRQ(void)
 
 	/* ICUCR42: CFC Eject */
 	irq_desc[PLD_IRQ_CFC_EJECT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFC_EJECT].handler = &mappi2_irq_type;
+	irq_desc[PLD_IRQ_CFC_EJECT].chip = &mappi2_irq_type;
 	irq_desc[PLD_IRQ_CFC_EJECT].action = 0;
 	irq_desc[PLD_IRQ_CFC_EJECT].depth = 1;	/* disable nested irq */
 	icu_data[PLD_IRQ_CFC_EJECT].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
diff --git a/arch/m32r/kernel/setup_mappi3.c b/arch/m32r/kernel/setup_mappi3.c
index d2ff021e2d3..014b51d1750 100644
--- a/arch/m32r/kernel/setup_mappi3.c
+++ b/arch/m32r/kernel/setup_mappi3.c
@@ -87,7 +87,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_SMC91X)
 	/* INT0 : LAN controller (SMC91111) */
 	irq_desc[M32R_IRQ_INT0].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT0].handler = &mappi3_irq_type;
+	irq_desc[M32R_IRQ_INT0].chip = &mappi3_irq_type;
 	irq_desc[M32R_IRQ_INT0].action = 0;
 	irq_desc[M32R_IRQ_INT0].depth = 1;
 	icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
@@ -96,7 +96,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &mappi3_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &mappi3_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -105,7 +105,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SERIAL_M32R_SIO
 	/* SIO0_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &mappi3_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &mappi3_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
@@ -113,14 +113,14 @@ void __init init_IRQ(void)
 
 	/* SIO0_S : uart send data */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &mappi3_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &mappi3_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
 	disable_mappi3_irq(M32R_IRQ_SIO0_S);
 	/* SIO1_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_R].handler = &mappi3_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &mappi3_irq_type;
 	irq_desc[M32R_IRQ_SIO1_R].action = 0;
 	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
 	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
@@ -128,7 +128,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_S : uart send data */
 	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_S].handler = &mappi3_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &mappi3_irq_type;
 	irq_desc[M32R_IRQ_SIO1_S].action = 0;
 	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
 	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
@@ -138,7 +138,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_USB)
 	/* INT1 : USB Host controller interrupt */
 	irq_desc[M32R_IRQ_INT1].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT1].handler = &mappi3_irq_type;
+	irq_desc[M32R_IRQ_INT1].chip = &mappi3_irq_type;
 	irq_desc[M32R_IRQ_INT1].action = 0;
 	irq_desc[M32R_IRQ_INT1].depth = 1;
 	icu_data[M32R_IRQ_INT1].icucr = M32R_ICUCR_ISMOD01;
@@ -147,7 +147,7 @@ void __init init_IRQ(void)
 
 	/* CFC IREQ */
 	irq_desc[PLD_IRQ_CFIREQ].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFIREQ].handler = &mappi3_irq_type;
+	irq_desc[PLD_IRQ_CFIREQ].chip = &mappi3_irq_type;
 	irq_desc[PLD_IRQ_CFIREQ].action = 0;
 	irq_desc[PLD_IRQ_CFIREQ].depth = 1;	/* disable nested irq */
 	icu_data[PLD_IRQ_CFIREQ].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD01;
@@ -156,7 +156,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_M32R_CFC)
 	/* ICUCR41: CFC Insert & eject */
 	irq_desc[PLD_IRQ_CFC_INSERT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFC_INSERT].handler = &mappi3_irq_type;
+	irq_desc[PLD_IRQ_CFC_INSERT].chip = &mappi3_irq_type;
 	irq_desc[PLD_IRQ_CFC_INSERT].action = 0;
 	irq_desc[PLD_IRQ_CFC_INSERT].depth = 1;	/* disable nested irq */
 	icu_data[PLD_IRQ_CFC_INSERT].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD00;
@@ -166,7 +166,7 @@ void __init init_IRQ(void)
 
 	/* IDE IREQ */
 	irq_desc[PLD_IRQ_IDEIREQ].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_IDEIREQ].handler = &mappi3_irq_type;
+	irq_desc[PLD_IRQ_IDEIREQ].chip = &mappi3_irq_type;
 	irq_desc[PLD_IRQ_IDEIREQ].action = 0;
 	irq_desc[PLD_IRQ_IDEIREQ].depth = 1;	/* disable nested irq */
 	icu_data[PLD_IRQ_IDEIREQ].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
diff --git a/arch/m32r/kernel/setup_oaks32r.c b/arch/m32r/kernel/setup_oaks32r.c
index 0e9e63538c0..ea64831aef7 100644
--- a/arch/m32r/kernel/setup_oaks32r.c
+++ b/arch/m32r/kernel/setup_oaks32r.c
@@ -85,7 +85,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_NE2000
 	/* INT3 : LAN controller (RTL8019AS) */
 	irq_desc[M32R_IRQ_INT3].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT3].handler = &oaks32r_irq_type;
+	irq_desc[M32R_IRQ_INT3].chip = &oaks32r_irq_type;
 	irq_desc[M32R_IRQ_INT3].action = 0;
 	irq_desc[M32R_IRQ_INT3].depth = 1;
 	icu_data[M32R_IRQ_INT3].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
@@ -94,7 +94,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &oaks32r_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &oaks32r_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -103,7 +103,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SERIAL_M32R_SIO
 	/* SIO0_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &oaks32r_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &oaks32r_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
@@ -111,7 +111,7 @@ void __init init_IRQ(void)
 
 	/* SIO0_S : uart send data */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &oaks32r_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &oaks32r_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
@@ -119,7 +119,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_R].handler = &oaks32r_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &oaks32r_irq_type;
 	irq_desc[M32R_IRQ_SIO1_R].action = 0;
 	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
 	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
@@ -127,7 +127,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_S : uart send data */
 	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_S].handler = &oaks32r_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &oaks32r_irq_type;
 	irq_desc[M32R_IRQ_SIO1_S].action = 0;
 	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
 	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
diff --git a/arch/m32r/kernel/setup_opsput.c b/arch/m32r/kernel/setup_opsput.c
index 548e8fc7949..55e8972d455 100644
--- a/arch/m32r/kernel/setup_opsput.c
+++ b/arch/m32r/kernel/setup_opsput.c
@@ -302,7 +302,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_SMC91X)
 	/* INT#0: LAN controller on OPSPUT-LAN (SMC91C111)*/
 	irq_desc[OPSPUT_LAN_IRQ_LAN].status = IRQ_DISABLED;
-	irq_desc[OPSPUT_LAN_IRQ_LAN].handler = &opsput_lanpld_irq_type;
+	irq_desc[OPSPUT_LAN_IRQ_LAN].chip = &opsput_lanpld_irq_type;
 	irq_desc[OPSPUT_LAN_IRQ_LAN].action = 0;
 	irq_desc[OPSPUT_LAN_IRQ_LAN].depth = 1;	/* disable nested irq */
 	lanpld_icu_data[irq2lanpldirq(OPSPUT_LAN_IRQ_LAN)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD02;	/* "H" edge sense */
@@ -311,7 +311,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &opsput_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &opsput_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -319,7 +319,7 @@ void __init init_IRQ(void)
 
 	/* SIO0 : receive */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &opsput_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &opsput_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
@@ -327,7 +327,7 @@ void __init init_IRQ(void)
 
 	/* SIO0 : send */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &opsput_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &opsput_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
@@ -335,7 +335,7 @@ void __init init_IRQ(void)
 
 	/* SIO1 : receive */
 	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_R].handler = &opsput_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &opsput_irq_type;
 	irq_desc[M32R_IRQ_SIO1_R].action = 0;
 	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
 	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
@@ -343,7 +343,7 @@ void __init init_IRQ(void)
 
 	/* SIO1 : send */
 	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_S].handler = &opsput_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &opsput_irq_type;
 	irq_desc[M32R_IRQ_SIO1_S].action = 0;
 	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
 	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
@@ -351,7 +351,7 @@ void __init init_IRQ(void)
 
 	/* DMA1 : */
 	irq_desc[M32R_IRQ_DMA1].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_DMA1].handler = &opsput_irq_type;
+	irq_desc[M32R_IRQ_DMA1].chip = &opsput_irq_type;
 	irq_desc[M32R_IRQ_DMA1].action = 0;
 	irq_desc[M32R_IRQ_DMA1].depth = 1;
 	icu_data[M32R_IRQ_DMA1].icucr = 0;
@@ -360,7 +360,7 @@ void __init init_IRQ(void)
 #ifdef CONFIG_SERIAL_M32R_PLDSIO
 	/* INT#1: SIO0 Receive on PLD */
 	irq_desc[PLD_IRQ_SIO0_RCV].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_SIO0_RCV].handler = &opsput_pld_irq_type;
+	irq_desc[PLD_IRQ_SIO0_RCV].chip = &opsput_pld_irq_type;
 	irq_desc[PLD_IRQ_SIO0_RCV].action = 0;
 	irq_desc[PLD_IRQ_SIO0_RCV].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_SIO0_RCV)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD03;
@@ -368,7 +368,7 @@ void __init init_IRQ(void)
 
 	/* INT#1: SIO0 Send on PLD */
 	irq_desc[PLD_IRQ_SIO0_SND].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_SIO0_SND].handler = &opsput_pld_irq_type;
+	irq_desc[PLD_IRQ_SIO0_SND].chip = &opsput_pld_irq_type;
 	irq_desc[PLD_IRQ_SIO0_SND].action = 0;
 	irq_desc[PLD_IRQ_SIO0_SND].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_SIO0_SND)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD03;
@@ -378,7 +378,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_M32R_CFC)
 	/* INT#1: CFC IREQ on PLD */
 	irq_desc[PLD_IRQ_CFIREQ].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFIREQ].handler = &opsput_pld_irq_type;
+	irq_desc[PLD_IRQ_CFIREQ].chip = &opsput_pld_irq_type;
 	irq_desc[PLD_IRQ_CFIREQ].action = 0;
 	irq_desc[PLD_IRQ_CFIREQ].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_CFIREQ)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD01;	/* 'L' level sense */
@@ -386,7 +386,7 @@ void __init init_IRQ(void)
 
 	/* INT#1: CFC Insert on PLD */
 	irq_desc[PLD_IRQ_CFC_INSERT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFC_INSERT].handler = &opsput_pld_irq_type;
+	irq_desc[PLD_IRQ_CFC_INSERT].chip = &opsput_pld_irq_type;
 	irq_desc[PLD_IRQ_CFC_INSERT].action = 0;
 	irq_desc[PLD_IRQ_CFC_INSERT].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_CFC_INSERT)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD00;	/* 'L' edge sense */
@@ -394,7 +394,7 @@ void __init init_IRQ(void)
 
 	/* INT#1: CFC Eject on PLD */
 	irq_desc[PLD_IRQ_CFC_EJECT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_CFC_EJECT].handler = &opsput_pld_irq_type;
+	irq_desc[PLD_IRQ_CFC_EJECT].chip = &opsput_pld_irq_type;
 	irq_desc[PLD_IRQ_CFC_EJECT].action = 0;
 	irq_desc[PLD_IRQ_CFC_EJECT].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_CFC_EJECT)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD02;	/* 'H' edge sense */
@@ -420,7 +420,7 @@ void __init init_IRQ(void)
 	outw(USBCR_OTGS, USBCR); 	/* USBCR: non-OTG */
 
     irq_desc[OPSPUT_LCD_IRQ_USB_INT1].status = IRQ_DISABLED;
-    irq_desc[OPSPUT_LCD_IRQ_USB_INT1].handler = &opsput_lcdpld_irq_type;
+    irq_desc[OPSPUT_LCD_IRQ_USB_INT1].chip = &opsput_lcdpld_irq_type;
     irq_desc[OPSPUT_LCD_IRQ_USB_INT1].action = 0;
     irq_desc[OPSPUT_LCD_IRQ_USB_INT1].depth = 1;
     lcdpld_icu_data[irq2lcdpldirq(OPSPUT_LCD_IRQ_USB_INT1)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD01;	/* "L" level sense */
@@ -438,7 +438,7 @@ void __init init_IRQ(void)
 	 * INT3# is used for AR
 	 */
 	irq_desc[M32R_IRQ_INT3].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_INT3].handler = &opsput_irq_type;
+	irq_desc[M32R_IRQ_INT3].chip = &opsput_irq_type;
 	irq_desc[M32R_IRQ_INT3].action = 0;
 	irq_desc[M32R_IRQ_INT3].depth = 1;
 	icu_data[M32R_IRQ_INT3].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
diff --git a/arch/m32r/kernel/setup_usrv.c b/arch/m32r/kernel/setup_usrv.c
index 64be659a23e..7fa12d8f66b 100644
--- a/arch/m32r/kernel/setup_usrv.c
+++ b/arch/m32r/kernel/setup_usrv.c
@@ -158,7 +158,7 @@ void __init init_IRQ(void)
 
 	/* MFT2 : system timer */
 	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_MFT2].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_MFT2].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_MFT2].action = 0;
 	irq_desc[M32R_IRQ_MFT2].depth = 1;
 	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
@@ -167,7 +167,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_SERIAL_M32R_SIO)
 	/* SIO0_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_R].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO0_R].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO0_R].action = 0;
 	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 	icu_data[M32R_IRQ_SIO0_R].icucr = 0;
@@ -175,7 +175,7 @@ void __init init_IRQ(void)
 
 	/* SIO0_S : uart send data */
 	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO0_S].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO0_S].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO0_S].action = 0;
 	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 	icu_data[M32R_IRQ_SIO0_S].icucr = 0;
@@ -183,7 +183,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_R : uart receive data */
 	irq_desc[M32R_IRQ_SIO1_R].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_R].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO1_R].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO1_R].action = 0;
 	irq_desc[M32R_IRQ_SIO1_R].depth = 1;
 	icu_data[M32R_IRQ_SIO1_R].icucr = 0;
@@ -191,7 +191,7 @@ void __init init_IRQ(void)
 
 	/* SIO1_S : uart send data */
 	irq_desc[M32R_IRQ_SIO1_S].status = IRQ_DISABLED;
-	irq_desc[M32R_IRQ_SIO1_S].handler = &mappi_irq_type;
+	irq_desc[M32R_IRQ_SIO1_S].chip = &mappi_irq_type;
 	irq_desc[M32R_IRQ_SIO1_S].action = 0;
 	irq_desc[M32R_IRQ_SIO1_S].depth = 1;
 	icu_data[M32R_IRQ_SIO1_S].icucr = 0;
@@ -201,7 +201,7 @@ void __init init_IRQ(void)
 	/* INT#67-#71: CFC#0 IREQ on PLD */
 	for (i = 0 ; i < CONFIG_CFC_NUM ; i++ ) {
 		irq_desc[PLD_IRQ_CF0 + i].status = IRQ_DISABLED;
-		irq_desc[PLD_IRQ_CF0 + i].handler = &m32700ut_pld_irq_type;
+		irq_desc[PLD_IRQ_CF0 + i].chip = &m32700ut_pld_irq_type;
 		irq_desc[PLD_IRQ_CF0 + i].action = 0;
 		irq_desc[PLD_IRQ_CF0 + i].depth = 1;	/* disable nested irq */
 		pld_icu_data[irq2pldirq(PLD_IRQ_CF0 + i)].icucr
@@ -212,7 +212,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
 	/* INT#76: 16552D#0 IREQ on PLD */
 	irq_desc[PLD_IRQ_UART0].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_UART0].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_UART0].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_UART0].action = 0;
 	irq_desc[PLD_IRQ_UART0].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_UART0)].icucr
@@ -221,7 +221,7 @@ void __init init_IRQ(void)
 
 	/* INT#77: 16552D#1 IREQ on PLD */
 	irq_desc[PLD_IRQ_UART1].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_UART1].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_UART1].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_UART1].action = 0;
 	irq_desc[PLD_IRQ_UART1].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_UART1)].icucr
@@ -232,7 +232,7 @@ void __init init_IRQ(void)
 #if defined(CONFIG_IDC_AK4524) || defined(CONFIG_IDC_AK4524_MODULE)
 	/* INT#80: AK4524 IREQ on PLD */
 	irq_desc[PLD_IRQ_SNDINT].status = IRQ_DISABLED;
-	irq_desc[PLD_IRQ_SNDINT].handler = &m32700ut_pld_irq_type;
+	irq_desc[PLD_IRQ_SNDINT].chip = &m32700ut_pld_irq_type;
 	irq_desc[PLD_IRQ_SNDINT].action = 0;
 	irq_desc[PLD_IRQ_SNDINT].depth = 1;	/* disable nested irq */
 	pld_icu_data[irq2pldirq(PLD_IRQ_SNDINT)].icucr
diff --git a/arch/mips/au1000/common/irq.c b/arch/mips/au1000/common/irq.c
index afe05ec12c2..da74ac21954 100644
--- a/arch/mips/au1000/common/irq.c
+++ b/arch/mips/au1000/common/irq.c
@@ -333,31 +333,31 @@ static void setup_local_irq(unsigned int irq_nr, int type, int int_req)
 				au_writel(1<<(irq_nr-32), IC1_CFG2CLR);
 				au_writel(1<<(irq_nr-32), IC1_CFG1CLR);
 				au_writel(1<<(irq_nr-32), IC1_CFG0SET);
-				irq_desc[irq_nr].handler = &rise_edge_irq_type;
+				irq_desc[irq_nr].chip = &rise_edge_irq_type;
 				break;
 			case INTC_INT_FALL_EDGE: /* 0:1:0 */
 				au_writel(1<<(irq_nr-32), IC1_CFG2CLR);
 				au_writel(1<<(irq_nr-32), IC1_CFG1SET);
 				au_writel(1<<(irq_nr-32), IC1_CFG0CLR);
-				irq_desc[irq_nr].handler = &fall_edge_irq_type;
+				irq_desc[irq_nr].chip = &fall_edge_irq_type;
 				break;
 			case INTC_INT_RISE_AND_FALL_EDGE: /* 0:1:1 */
 				au_writel(1<<(irq_nr-32), IC1_CFG2CLR);
 				au_writel(1<<(irq_nr-32), IC1_CFG1SET);
 				au_writel(1<<(irq_nr-32), IC1_CFG0SET);
-				irq_desc[irq_nr].handler = &either_edge_irq_type;
+				irq_desc[irq_nr].chip = &either_edge_irq_type;
 				break;
 			case INTC_INT_HIGH_LEVEL: /* 1:0:1 */
 				au_writel(1<<(irq_nr-32), IC1_CFG2SET);
 				au_writel(1<<(irq_nr-32), IC1_CFG1CLR);
 				au_writel(1<<(irq_nr-32), IC1_CFG0SET);
-				irq_desc[irq_nr].handler = &level_irq_type;
+				irq_desc[irq_nr].chip = &level_irq_type;
 				break;
 			case INTC_INT_LOW_LEVEL: /* 1:1:0 */
 				au_writel(1<<(irq_nr-32), IC1_CFG2SET);
 				au_writel(1<<(irq_nr-32), IC1_CFG1SET);
 				au_writel(1<<(irq_nr-32), IC1_CFG0CLR);
-				irq_desc[irq_nr].handler = &level_irq_type;
+				irq_desc[irq_nr].chip = &level_irq_type;
 				break;
 			case INTC_INT_DISABLED: /* 0:0:0 */
 				au_writel(1<<(irq_nr-32), IC1_CFG0CLR);
@@ -385,31 +385,31 @@ static void setup_local_irq(unsigned int irq_nr, int type, int int_req)
 				au_writel(1<<irq_nr, IC0_CFG2CLR);
 				au_writel(1<<irq_nr, IC0_CFG1CLR);
 				au_writel(1<<irq_nr, IC0_CFG0SET);
-				irq_desc[irq_nr].handler = &rise_edge_irq_type;
+				irq_desc[irq_nr].chip = &rise_edge_irq_type;
 				break;
 			case INTC_INT_FALL_EDGE: /* 0:1:0 */
 				au_writel(1<<irq_nr, IC0_CFG2CLR);
 				au_writel(1<<irq_nr, IC0_CFG1SET);
 				au_writel(1<<irq_nr, IC0_CFG0CLR);
-				irq_desc[irq_nr].handler = &fall_edge_irq_type;
+				irq_desc[irq_nr].chip = &fall_edge_irq_type;
 				break;
 			case INTC_INT_RISE_AND_FALL_EDGE: /* 0:1:1 */
 				au_writel(1<<irq_nr, IC0_CFG2CLR);
 				au_writel(1<<irq_nr, IC0_CFG1SET);
 				au_writel(1<<irq_nr, IC0_CFG0SET);
-				irq_desc[irq_nr].handler = &either_edge_irq_type;
+				irq_desc[irq_nr].chip = &either_edge_irq_type;
 				break;
 			case INTC_INT_HIGH_LEVEL: /* 1:0:1 */
 				au_writel(1<<irq_nr, IC0_CFG2SET);
 				au_writel(1<<irq_nr, IC0_CFG1CLR);
 				au_writel(1<<irq_nr, IC0_CFG0SET);
-				irq_desc[irq_nr].handler = &level_irq_type;
+				irq_desc[irq_nr].chip = &level_irq_type;
 				break;
 			case INTC_INT_LOW_LEVEL: /* 1:1:0 */
 				au_writel(1<<irq_nr, IC0_CFG2SET);
 				au_writel(1<<irq_nr, IC0_CFG1SET);
 				au_writel(1<<irq_nr, IC0_CFG0CLR);
-				irq_desc[irq_nr].handler = &level_irq_type;
+				irq_desc[irq_nr].chip = &level_irq_type;
 				break;
 			case INTC_INT_DISABLED: /* 0:0:0 */
 				au_writel(1<<irq_nr, IC0_CFG0CLR);
diff --git a/arch/mips/au1000/pb1200/irqmap.c b/arch/mips/au1000/pb1200/irqmap.c
index bacc0c6bfe6..5dd164fc188 100644
--- a/arch/mips/au1000/pb1200/irqmap.c
+++ b/arch/mips/au1000/pb1200/irqmap.c
@@ -172,7 +172,7 @@ void _board_init_irq(void)
 
 	for (irq_nr = PB1200_INT_BEGIN; irq_nr <= PB1200_INT_END; irq_nr++)
 	{
-		irq_desc[irq_nr].handler = &external_irq_type;
+		irq_desc[irq_nr].chip = &external_irq_type;
 		pb1200_disable_irq(irq_nr);
 	}
 
diff --git a/arch/mips/ddb5xxx/ddb5477/irq_5477.c b/arch/mips/ddb5xxx/ddb5477/irq_5477.c
index 5fcd5f070cd..63c3d6534b3 100644
--- a/arch/mips/ddb5xxx/ddb5477/irq_5477.c
+++ b/arch/mips/ddb5xxx/ddb5477/irq_5477.c
@@ -107,7 +107,7 @@ void __init vrc5477_irq_init(u32 irq_base)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = NULL;
 		irq_desc[i].depth = 1;
-		irq_desc[i].handler = &vrc5477_irq_controller;
+		irq_desc[i].chip = &vrc5477_irq_controller;
 	}
 
 	vrc5477_irq_base = irq_base;
diff --git a/arch/mips/dec/ioasic-irq.c b/arch/mips/dec/ioasic-irq.c
index d5bca5d233b..da2dbb42f91 100644
--- a/arch/mips/dec/ioasic-irq.c
+++ b/arch/mips/dec/ioasic-irq.c
@@ -144,13 +144,13 @@ void __init init_ioasic_irqs(int base)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = 0;
 		irq_desc[i].depth = 1;
-		irq_desc[i].handler = &ioasic_irq_type;
+		irq_desc[i].chip = &ioasic_irq_type;
 	}
 	for (; i < base + IO_IRQ_LINES; i++) {
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = 0;
 		irq_desc[i].depth = 1;
-		irq_desc[i].handler = &ioasic_dma_irq_type;
+		irq_desc[i].chip = &ioasic_dma_irq_type;
 	}
 
 	ioasic_irq_base = base;
diff --git a/arch/mips/dec/kn02-irq.c b/arch/mips/dec/kn02-irq.c
index 898bed502a3..d44c00d9e80 100644
--- a/arch/mips/dec/kn02-irq.c
+++ b/arch/mips/dec/kn02-irq.c
@@ -123,7 +123,7 @@ void __init init_kn02_irqs(int base)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = 0;
 		irq_desc[i].depth = 1;
-		irq_desc[i].handler = &kn02_irq_type;
+		irq_desc[i].chip = &kn02_irq_type;
 	}
 
 	kn02_irq_base = base;
diff --git a/arch/mips/gt64120/ev64120/irq.c b/arch/mips/gt64120/ev64120/irq.c
index 46c468b26b3..f489a8067a9 100644
--- a/arch/mips/gt64120/ev64120/irq.c
+++ b/arch/mips/gt64120/ev64120/irq.c
@@ -138,7 +138,7 @@ void __init arch_init_irq(void)
 	/*  Let's initialize our IRQ descriptors  */
 	for (i = 0; i < NR_IRQS; i++) {
 		irq_desc[i].status = 0;
-		irq_desc[i].handler = &no_irq_type;
+		irq_desc[i].chip = &no_irq_type;
 		irq_desc[i].action = NULL;
 		irq_desc[i].depth = 0;
 		spin_lock_init(&irq_desc[i].lock);
diff --git a/arch/mips/ite-boards/generic/irq.c b/arch/mips/ite-boards/generic/irq.c
index 77be7216bdd..a6749c56fe3 100644
--- a/arch/mips/ite-boards/generic/irq.c
+++ b/arch/mips/ite-boards/generic/irq.c
@@ -208,10 +208,10 @@ void __init arch_init_irq(void)
 #endif
 
 	for (i = 0; i <= IT8172_LAST_IRQ; i++) {
-		irq_desc[i].handler = &it8172_irq_type;
+		irq_desc[i].chip = &it8172_irq_type;
 		spin_lock_init(&irq_desc[i].lock);
 	}
-	irq_desc[MIPS_CPU_TIMER_IRQ].handler = &cp0_irq_type;
+	irq_desc[MIPS_CPU_TIMER_IRQ].chip = &cp0_irq_type;
 	set_c0_status(ALLINTS_NOTIMER);
 }
 
diff --git a/arch/mips/jazz/irq.c b/arch/mips/jazz/irq.c
index becc9accd49..478be9858a1 100644
--- a/arch/mips/jazz/irq.c
+++ b/arch/mips/jazz/irq.c
@@ -73,7 +73,7 @@ void __init init_r4030_ints(void)
 		irq_desc[i].status     = IRQ_DISABLED;
 		irq_desc[i].action     = 0;
 		irq_desc[i].depth      = 1;
-		irq_desc[i].handler    = &r4030_irq_type;
+		irq_desc[i].chip    = &r4030_irq_type;
 	}
 
 	r4030_write_reg16(JAZZ_IO_IRQ_ENABLE, 0);
diff --git a/arch/mips/jmr3927/rbhma3100/irq.c b/arch/mips/jmr3927/rbhma3100/irq.c
index 11304d1354f..380046ea1db 100644
--- a/arch/mips/jmr3927/rbhma3100/irq.c
+++ b/arch/mips/jmr3927/rbhma3100/irq.c
@@ -435,7 +435,7 @@ void jmr3927_irq_init(u32 irq_base)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = NULL;
 		irq_desc[i].depth = 1;
-		irq_desc[i].handler = &jmr3927_irq_controller;
+		irq_desc[i].chip = &jmr3927_irq_controller;
 	}
 
 	jmr3927_irq_base = irq_base;
diff --git a/arch/mips/kernel/i8259.c b/arch/mips/kernel/i8259.c
index 0cb8ed5662f..91ffb1233ca 100644
--- a/arch/mips/kernel/i8259.c
+++ b/arch/mips/kernel/i8259.c
@@ -120,7 +120,7 @@ int i8259A_irq_pending(unsigned int irq)
 void make_8259A_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
-	irq_desc[irq].handler = &i8259A_irq_type;
+	irq_desc[irq].chip = &i8259A_irq_type;
 	enable_irq(irq);
 }
 
@@ -327,7 +327,7 @@ void __init init_i8259_irqs (void)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = NULL;
 		irq_desc[i].depth = 1;
-		irq_desc[i].handler = &i8259A_irq_type;
+		irq_desc[i].chip = &i8259A_irq_type;
 	}
 
 	setup_irq(2, &irq2);
diff --git a/arch/mips/kernel/irq-msc01.c b/arch/mips/kernel/irq-msc01.c
index 97ebdc754b9..f8cd1ac64d8 100644
--- a/arch/mips/kernel/irq-msc01.c
+++ b/arch/mips/kernel/irq-msc01.c
@@ -174,14 +174,14 @@ void __init init_msc_irqs(unsigned int base, msc_irqmap_t *imp, int nirq)
 
 		switch (imp->im_type) {
 		case MSC01_IRQ_EDGE:
-			irq_desc[base+n].handler = &msc_edgeirq_type;
+			irq_desc[base+n].chip = &msc_edgeirq_type;
 			if (cpu_has_veic)
 				MSCIC_WRITE(MSC01_IC_SUP+n*8, MSC01_IC_SUP_EDGE_BIT);
 			else
 				MSCIC_WRITE(MSC01_IC_SUP+n*8, MSC01_IC_SUP_EDGE_BIT | imp->im_lvl);
 			break;
 		case MSC01_IRQ_LEVEL:
-			irq_desc[base+n].handler = &msc_levelirq_type;
+			irq_desc[base+n].chip = &msc_levelirq_type;
 			if (cpu_has_veic)
 				MSCIC_WRITE(MSC01_IC_SUP+n*8, 0);
 			else
diff --git a/arch/mips/kernel/irq-mv6434x.c b/arch/mips/kernel/irq-mv6434x.c
index 0613f1f36b1..f9c763a6554 100644
--- a/arch/mips/kernel/irq-mv6434x.c
+++ b/arch/mips/kernel/irq-mv6434x.c
@@ -155,7 +155,7 @@ void __init mv64340_irq_init(unsigned int base)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = 0;
 		irq_desc[i].depth = 2;
-		irq_desc[i].handler = &mv64340_irq_type;
+		irq_desc[i].chip = &mv64340_irq_type;
 	}
 
 	irq_base = base;
diff --git a/arch/mips/kernel/irq-rm7000.c b/arch/mips/kernel/irq-rm7000.c
index 0b130c5ac5d..121da385a94 100644
--- a/arch/mips/kernel/irq-rm7000.c
+++ b/arch/mips/kernel/irq-rm7000.c
@@ -91,7 +91,7 @@ void __init rm7k_cpu_irq_init(int base)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = NULL;
 		irq_desc[i].depth = 1;
-		irq_desc[i].handler = &rm7k_irq_controller;
+		irq_desc[i].chip = &rm7k_irq_controller;
 	}
 
 	irq_base = base;
diff --git a/arch/mips/kernel/irq-rm9000.c b/arch/mips/kernel/irq-rm9000.c
index 9b5f20c32ac..25109c103e4 100644
--- a/arch/mips/kernel/irq-rm9000.c
+++ b/arch/mips/kernel/irq-rm9000.c
@@ -139,11 +139,11 @@ void __init rm9k_cpu_irq_init(int base)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = NULL;
 		irq_desc[i].depth = 1;
-		irq_desc[i].handler = &rm9k_irq_controller;
+		irq_desc[i].chip = &rm9k_irq_controller;
 	}
 
 	rm9000_perfcount_irq = base + 1;
-	irq_desc[rm9000_perfcount_irq].handler = &rm9k_perfcounter_irq;
+	irq_desc[rm9000_perfcount_irq].chip = &rm9k_perfcounter_irq;
 
 	irq_base = base;
 }
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index 3dce742e716..5c9dcd5eed5 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -95,7 +95,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 #endif
-		seq_printf(p, " %14s", irq_desc[i].handler->typename);
+		seq_printf(p, " %14s", irq_desc[i].chip->typename);
 		seq_printf(p, "  %s", action->name);
 
 		for (action=action->next; action; action = action->next)
@@ -137,7 +137,7 @@ void __init init_IRQ(void)
 		irq_desc[i].status  = IRQ_DISABLED;
 		irq_desc[i].action  = NULL;
 		irq_desc[i].depth   = 1;
-		irq_desc[i].handler = &no_irq_type;
+		irq_desc[i].chip = &no_irq_type;
 		spin_lock_init(&irq_desc[i].lock);
 #ifdef CONFIG_MIPS_MT_SMTC
 		irq_hwmask[i] = 0;
diff --git a/arch/mips/kernel/irq_cpu.c b/arch/mips/kernel/irq_cpu.c
index 5db67e31ec1..0e455a8ad86 100644
--- a/arch/mips/kernel/irq_cpu.c
+++ b/arch/mips/kernel/irq_cpu.c
@@ -167,14 +167,14 @@ void __init mips_cpu_irq_init(int irq_base)
 			irq_desc[i].status = IRQ_DISABLED;
 			irq_desc[i].action = NULL;
 			irq_desc[i].depth = 1;
-			irq_desc[i].handler = &mips_mt_cpu_irq_controller;
+			irq_desc[i].chip = &mips_mt_cpu_irq_controller;
 		}
 
 	for (i = irq_base + 2; i < irq_base + 8; i++) {
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = NULL;
 		irq_desc[i].depth = 1;
-		irq_desc[i].handler = &mips_cpu_irq_controller;
+		irq_desc[i].chip = &mips_cpu_irq_controller;
 	}
 
 	mips_cpu_irq_base = irq_base;
diff --git a/arch/mips/lasat/interrupt.c b/arch/mips/lasat/interrupt.c
index 2d3472b21eb..9316a024a81 100644
--- a/arch/mips/lasat/interrupt.c
+++ b/arch/mips/lasat/interrupt.c
@@ -156,6 +156,6 @@ void __init arch_init_irq(void)
 		irq_desc[i].status	= IRQ_DISABLED;
 		irq_desc[i].action	= 0;
 		irq_desc[i].depth	= 1;
-		irq_desc[i].handler	= &lasat_irq_type;
+		irq_desc[i].chip	= &lasat_irq_type;
 	}
 }
diff --git a/arch/mips/mips-boards/atlas/atlas_int.c b/arch/mips/mips-boards/atlas/atlas_int.c
index db53950b7cf..9dd6b892558 100644
--- a/arch/mips/mips-boards/atlas/atlas_int.c
+++ b/arch/mips/mips-boards/atlas/atlas_int.c
@@ -215,7 +215,7 @@ void __init arch_init_irq(void)
 		irq_desc[i].status	= IRQ_DISABLED;
 		irq_desc[i].action	= 0;
 		irq_desc[i].depth	= 1;
-		irq_desc[i].handler	= &atlas_irq_type;
+		irq_desc[i].chip	= &atlas_irq_type;
 		spin_lock_init(&irq_desc[i].lock);
 	}
 }
diff --git a/arch/mips/momentum/ocelot_c/cpci-irq.c b/arch/mips/momentum/ocelot_c/cpci-irq.c
index bd885785e2f..31d179c4673 100644
--- a/arch/mips/momentum/ocelot_c/cpci-irq.c
+++ b/arch/mips/momentum/ocelot_c/cpci-irq.c
@@ -147,6 +147,6 @@ void cpci_irq_init(void)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = 0;
 		irq_desc[i].depth = 2;
-		irq_desc[i].handler = &cpci_irq_type;
+		irq_desc[i].chip = &cpci_irq_type;
 	}
 }
diff --git a/arch/mips/momentum/ocelot_c/uart-irq.c b/arch/mips/momentum/ocelot_c/uart-irq.c
index 755bde5146b..852265026fd 100644
--- a/arch/mips/momentum/ocelot_c/uart-irq.c
+++ b/arch/mips/momentum/ocelot_c/uart-irq.c
@@ -137,10 +137,10 @@ void uart_irq_init(void)
 	irq_desc[80].status = IRQ_DISABLED;
 	irq_desc[80].action = 0;
 	irq_desc[80].depth = 2;
-	irq_desc[80].handler = &uart_irq_type;
+	irq_desc[80].chip = &uart_irq_type;
 
 	irq_desc[81].status = IRQ_DISABLED;
 	irq_desc[81].action = 0;
 	irq_desc[81].depth = 2;
-	irq_desc[81].handler = &uart_irq_type;
+	irq_desc[81].chip = &uart_irq_type;
 }
diff --git a/arch/mips/philips/pnx8550/common/int.c b/arch/mips/philips/pnx8550/common/int.c
index 39ee6314f62..8f18764a235 100644
--- a/arch/mips/philips/pnx8550/common/int.c
+++ b/arch/mips/philips/pnx8550/common/int.c
@@ -236,7 +236,7 @@ void __init arch_init_irq(void)
 	int configPR;
 
 	for (i = 0; i < PNX8550_INT_CP0_TOTINT; i++) {
-		irq_desc[i].handler = &level_irq_type;
+		irq_desc[i].chip = &level_irq_type;
 		pnx8550_ack(i);	/* mask the irq just in case  */
 	}
 
@@ -273,7 +273,7 @@ void __init arch_init_irq(void)
 		/* mask/priority is still 0 so we will not get any
 		 * interrupts until it is unmasked */
 
-		irq_desc[i].handler = &level_irq_type;
+		irq_desc[i].chip = &level_irq_type;
 	}
 
 	/* Priority level 0 */
@@ -282,12 +282,12 @@ void __init arch_init_irq(void)
 	/* Set int vector table address */
 	PNX8550_GIC_VECTOR_0 = PNX8550_GIC_VECTOR_1 = 0;
 
-	irq_desc[MIPS_CPU_GIC_IRQ].handler = &level_irq_type;
+	irq_desc[MIPS_CPU_GIC_IRQ].chip = &level_irq_type;
 	setup_irq(MIPS_CPU_GIC_IRQ, &gic_action);
 
 	/* init of Timer interrupts */
 	for (i = PNX8550_INT_TIMER_MIN; i <= PNX8550_INT_TIMER_MAX; i++) {
-		irq_desc[i].handler = &level_irq_type;
+		irq_desc[i].chip = &level_irq_type;
 	}
 
 	/* Stop Timer 1-3 */
@@ -295,7 +295,7 @@ void __init arch_init_irq(void)
 	configPR |= 0x00000038;
 	write_c0_config7(configPR);
 
-	irq_desc[MIPS_CPU_TIMER_IRQ].handler = &level_irq_type;
+	irq_desc[MIPS_CPU_TIMER_IRQ].chip = &level_irq_type;
 	setup_irq(MIPS_CPU_TIMER_IRQ, &timer_action);
 }
 
diff --git a/arch/mips/sgi-ip22/ip22-eisa.c b/arch/mips/sgi-ip22/ip22-eisa.c
index b19820110aa..989167b49ce 100644
--- a/arch/mips/sgi-ip22/ip22-eisa.c
+++ b/arch/mips/sgi-ip22/ip22-eisa.c
@@ -279,9 +279,9 @@ int __init ip22_eisa_init(void)
 		irq_desc[i].action = 0;
 		irq_desc[i].depth = 1;
 		if (i < (SGINT_EISA + 8))
-			irq_desc[i].handler = &ip22_eisa1_irq_type;
+			irq_desc[i].chip = &ip22_eisa1_irq_type;
 		else
-			irq_desc[i].handler = &ip22_eisa2_irq_type;
+			irq_desc[i].chip = &ip22_eisa2_irq_type;
 	}
 
 	/* Cannot use request_irq because of kmalloc not being ready at such
diff --git a/arch/mips/sgi-ip22/ip22-int.c b/arch/mips/sgi-ip22/ip22-int.c
index fc6a7e2b189..18906af6969 100644
--- a/arch/mips/sgi-ip22/ip22-int.c
+++ b/arch/mips/sgi-ip22/ip22-int.c
@@ -436,7 +436,7 @@ void __init arch_init_irq(void)
 		irq_desc[i].status	= IRQ_DISABLED;
 		irq_desc[i].action	= 0;
 		irq_desc[i].depth	= 1;
-		irq_desc[i].handler	= handler;
+		irq_desc[i].chip	= handler;
 	}
 
 	/* vector handler. this register the IRQ as non-sharable */
diff --git a/arch/mips/sgi-ip27/ip27-irq.c b/arch/mips/sgi-ip27/ip27-irq.c
index 0b61a39ce2b..869566c360a 100644
--- a/arch/mips/sgi-ip27/ip27-irq.c
+++ b/arch/mips/sgi-ip27/ip27-irq.c
@@ -386,7 +386,7 @@ void __devinit register_bridge_irq(unsigned int irq)
 	irq_desc[irq].status	= IRQ_DISABLED;
 	irq_desc[irq].action	= 0;
 	irq_desc[irq].depth	= 1;
-	irq_desc[irq].handler	= &bridge_irq_type;
+	irq_desc[irq].chip	= &bridge_irq_type;
 }
 
 int __devinit request_bridge_irq(struct bridge_controller *bc)
diff --git a/arch/mips/sgi-ip32/ip32-irq.c b/arch/mips/sgi-ip32/ip32-irq.c
index 8ba08047d16..00b94aaf637 100644
--- a/arch/mips/sgi-ip32/ip32-irq.c
+++ b/arch/mips/sgi-ip32/ip32-irq.c
@@ -591,7 +591,7 @@ void __init arch_init_irq(void)
 		irq_desc[irq].status = IRQ_DISABLED;
 		irq_desc[irq].action = 0;
 		irq_desc[irq].depth = 0;
-		irq_desc[irq].handler = controller;
+		irq_desc[irq].chip = controller;
 	}
 	setup_irq(CRIME_MEMERR_IRQ, &memerr_irq);
 	setup_irq(CRIME_CPUERR_IRQ, &cpuerr_irq);
diff --git a/arch/mips/sibyte/bcm1480/irq.c b/arch/mips/sibyte/bcm1480/irq.c
index e61760b14d9..610df40cb82 100644
--- a/arch/mips/sibyte/bcm1480/irq.c
+++ b/arch/mips/sibyte/bcm1480/irq.c
@@ -276,10 +276,10 @@ void __init init_bcm1480_irqs(void)
 		irq_desc[i].action = 0;
 		irq_desc[i].depth = 1;
 		if (i < BCM1480_NR_IRQS) {
-			irq_desc[i].handler = &bcm1480_irq_type;
+			irq_desc[i].chip = &bcm1480_irq_type;
 			bcm1480_irq_owner[i] = 0;
 		} else {
-			irq_desc[i].handler = &no_irq_type;
+			irq_desc[i].chip = &no_irq_type;
 		}
 	}
 }
diff --git a/arch/mips/sibyte/sb1250/irq.c b/arch/mips/sibyte/sb1250/irq.c
index f853c32f60a..fcc61940f1f 100644
--- a/arch/mips/sibyte/sb1250/irq.c
+++ b/arch/mips/sibyte/sb1250/irq.c
@@ -246,10 +246,10 @@ void __init init_sb1250_irqs(void)
 		irq_desc[i].action = 0;
 		irq_desc[i].depth = 1;
 		if (i < SB1250_NR_IRQS) {
-			irq_desc[i].handler = &sb1250_irq_type;
+			irq_desc[i].chip = &sb1250_irq_type;
 			sb1250_irq_owner[i] = 0;
 		} else {
-			irq_desc[i].handler = &no_irq_type;
+			irq_desc[i].chip = &no_irq_type;
 		}
 	}
 }
diff --git a/arch/mips/sni/irq.c b/arch/mips/sni/irq.c
index 7365b4853dd..c19e158ec40 100644
--- a/arch/mips/sni/irq.c
+++ b/arch/mips/sni/irq.c
@@ -203,7 +203,7 @@ void __init arch_init_irq(void)
 		irq_desc[i].status     = IRQ_DISABLED;
 		irq_desc[i].action     = 0;
 		irq_desc[i].depth      = 1;
-		irq_desc[i].handler    = &pciasic_irq_type;
+		irq_desc[i].chip    = &pciasic_irq_type;
 	}
 
 	change_c0_status(ST0_IM, IE_IRQ1|IE_IRQ2|IE_IRQ3|IE_IRQ4);
diff --git a/arch/mips/tx4927/common/tx4927_irq.c b/arch/mips/tx4927/common/tx4927_irq.c
index 8ca68015cf4..a42be00483e 100644
--- a/arch/mips/tx4927/common/tx4927_irq.c
+++ b/arch/mips/tx4927/common/tx4927_irq.c
@@ -227,7 +227,7 @@ static void __init tx4927_irq_cp0_init(void)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = 0;
 		irq_desc[i].depth = 1;
-		irq_desc[i].handler = &tx4927_irq_cp0_type;
+		irq_desc[i].chip = &tx4927_irq_cp0_type;
 	}
 
 	return;
@@ -435,7 +435,7 @@ static void __init tx4927_irq_pic_init(void)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = 0;
 		irq_desc[i].depth = 2;
-		irq_desc[i].handler = &tx4927_irq_pic_type;
+		irq_desc[i].chip = &tx4927_irq_pic_type;
 	}
 
 	setup_irq(TX4927_IRQ_NEST_PIC_ON_CP0, &tx4927_irq_pic_action);
diff --git a/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c b/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c
index aee07ff2212..c67978b6dae 100644
--- a/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c
+++ b/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c
@@ -368,7 +368,7 @@ static void __init toshiba_rbtx4927_irq_ioc_init(void)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = 0;
 		irq_desc[i].depth = 3;
-		irq_desc[i].handler = &toshiba_rbtx4927_irq_ioc_type;
+		irq_desc[i].chip = &toshiba_rbtx4927_irq_ioc_type;
 	}
 
 	setup_irq(TOSHIBA_RBTX4927_IRQ_NEST_IOC_ON_PIC,
@@ -526,7 +526,7 @@ static void __init toshiba_rbtx4927_irq_isa_init(void)
 		irq_desc[i].action = 0;
 		irq_desc[i].depth =
 		    ((i < TOSHIBA_RBTX4927_IRQ_ISA_MID) ? (4) : (5));
-		irq_desc[i].handler = &toshiba_rbtx4927_irq_isa_type;
+		irq_desc[i].chip = &toshiba_rbtx4927_irq_isa_type;
 	}
 
 	setup_irq(TOSHIBA_RBTX4927_IRQ_NEST_ISA_ON_IOC,
@@ -692,13 +692,13 @@ void toshiba_rbtx4927_irq_dump(char *key)
 	{
 		u32 i, j = 0;
 		for (i = 0; i < NR_IRQS; i++) {
-			if (strcmp(irq_desc[i].handler->typename, "none")
+			if (strcmp(irq_desc[i].chip->typename, "none")
 			    == 0)
 				continue;
 
 			if ((i >= 1)
-			    && (irq_desc[i - 1].handler->typename ==
-				irq_desc[i].handler->typename)) {
+			    && (irq_desc[i - 1].chip->typename ==
+				irq_desc[i].chip->typename)) {
 				j++;
 			} else {
 				j = 0;
@@ -707,12 +707,12 @@ void toshiba_rbtx4927_irq_dump(char *key)
 			    (TOSHIBA_RBTX4927_IRQ_INFO,
 			     "%s irq=0x%02x/%3d s=0x%08x h=0x%08x a=0x%08x ah=0x%08x d=%1d n=%s/%02d\n",
 			     key, i, i, irq_desc[i].status,
-			     (u32) irq_desc[i].handler,
+			     (u32) irq_desc[i].chip,
 			     (u32) irq_desc[i].action,
 			     (u32) (irq_desc[i].action ? irq_desc[i].
 				    action->handler : 0),
 			     irq_desc[i].depth,
-			     irq_desc[i].handler->typename, j);
+			     irq_desc[i].chip->typename, j);
 		}
 	}
 #endif
diff --git a/arch/mips/tx4938/common/irq.c b/arch/mips/tx4938/common/irq.c
index 873805178d8..0b2f8c84921 100644
--- a/arch/mips/tx4938/common/irq.c
+++ b/arch/mips/tx4938/common/irq.c
@@ -102,7 +102,7 @@ tx4938_irq_cp0_init(void)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = 0;
 		irq_desc[i].depth = 1;
-		irq_desc[i].handler = &tx4938_irq_cp0_type;
+		irq_desc[i].chip = &tx4938_irq_cp0_type;
 	}
 
 	return;
@@ -306,7 +306,7 @@ tx4938_irq_pic_init(void)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = 0;
 		irq_desc[i].depth = 2;
-		irq_desc[i].handler = &tx4938_irq_pic_type;
+		irq_desc[i].chip = &tx4938_irq_pic_type;
 	}
 
 	setup_irq(TX4938_IRQ_NEST_PIC_ON_CP0, &tx4938_irq_pic_action);
diff --git a/arch/mips/tx4938/toshiba_rbtx4938/irq.c b/arch/mips/tx4938/toshiba_rbtx4938/irq.c
index 9cd9c0fe226..3b8245dc5bd 100644
--- a/arch/mips/tx4938/toshiba_rbtx4938/irq.c
+++ b/arch/mips/tx4938/toshiba_rbtx4938/irq.c
@@ -146,7 +146,7 @@ toshiba_rbtx4938_irq_ioc_init(void)
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = 0;
 		irq_desc[i].depth = 3;
-		irq_desc[i].handler = &toshiba_rbtx4938_irq_ioc_type;
+		irq_desc[i].chip = &toshiba_rbtx4938_irq_ioc_type;
 	}
 
 	setup_irq(RBTX4938_IRQ_IOCINT,
diff --git a/arch/mips/vr41xx/common/icu.c b/arch/mips/vr41xx/common/icu.c
index 07ae19cf0c2..b9323302cc4 100644
--- a/arch/mips/vr41xx/common/icu.c
+++ b/arch/mips/vr41xx/common/icu.c
@@ -722,10 +722,10 @@ static int __init vr41xx_icu_init(void)
 	icu2_write(MGIUINTHREG, 0xffff);
 
 	for (i = SYSINT1_IRQ_BASE; i <= SYSINT1_IRQ_LAST; i++)
-		irq_desc[i].handler = &sysint1_irq_type;
+		irq_desc[i].chip = &sysint1_irq_type;
 
 	for (i = SYSINT2_IRQ_BASE; i <= SYSINT2_IRQ_LAST; i++)
-		irq_desc[i].handler = &sysint2_irq_type;
+		irq_desc[i].chip = &sysint2_irq_type;
 
 	cascade_irq(INT0_IRQ, icu_get_irq);
 	cascade_irq(INT1_IRQ, icu_get_irq);
diff --git a/arch/mips/vr41xx/common/irq.c b/arch/mips/vr41xx/common/irq.c
index 86796bb63c3..66aa50802de 100644
--- a/arch/mips/vr41xx/common/irq.c
+++ b/arch/mips/vr41xx/common/irq.c
@@ -73,13 +73,13 @@ static void irq_dispatch(unsigned int irq, struct pt_regs *regs)
 	if (cascade->get_irq != NULL) {
 		unsigned int source_irq = irq;
 		desc = irq_desc + source_irq;
-		desc->handler->ack(source_irq);
+		desc->chip->ack(source_irq);
 		irq = cascade->get_irq(irq, regs);
 		if (irq < 0)
 			atomic_inc(&irq_err_count);
 		else
 			irq_dispatch(irq, regs);
-		desc->handler->end(source_irq);
+		desc->chip->end(source_irq);
 	} else
 		do_IRQ(irq, regs);
 }
diff --git a/arch/mips/vr41xx/common/vrc4173.c b/arch/mips/vr41xx/common/vrc4173.c
index 3e31f8193d2..2d287b8893d 100644
--- a/arch/mips/vr41xx/common/vrc4173.c
+++ b/arch/mips/vr41xx/common/vrc4173.c
@@ -483,7 +483,7 @@ static inline int vrc4173_icu_init(int cascade_irq)
 	vr41xx_set_irq_level(GIU_IRQ_TO_PIN(cascade_irq), LEVEL_LOW);
 
 	for (i = VRC4173_IRQ_BASE; i <= VRC4173_IRQ_LAST; i++)
-                irq_desc[i].handler = &vrc4173_irq_type;
+                irq_desc[i].chip = &vrc4173_irq_type;
 
 	return 0;
 }
diff --git a/arch/mips/vr41xx/nec-cmbvr4133/irq.c b/arch/mips/vr41xx/nec-cmbvr4133/irq.c
index 31db6b61a39..7b2511ca0a6 100644
--- a/arch/mips/vr41xx/nec-cmbvr4133/irq.c
+++ b/arch/mips/vr41xx/nec-cmbvr4133/irq.c
@@ -104,7 +104,7 @@ void __init rockhopper_init_irq(void)
 	}
 
 	for (i = I8259_IRQ_BASE; i <= I8259_IRQ_LAST; i++)
-		irq_desc[i].handler = &i8259_irq_type;
+		irq_desc[i].chip = &i8259_irq_type;
 
 	setup_irq(I8259_SLAVE_IRQ, &i8259_slave_cascade);
 
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index 197936d9359..26e69f73fdb 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -158,7 +158,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		seq_printf(p, "%10u ", kstat_irqs(i));
 #endif
 
-		seq_printf(p, " %14s", irq_desc[i].handler->typename);
+		seq_printf(p, " %14s", irq_desc[i].chip->typename);
 #ifndef PARISC_IRQ_CR16_COUNTS
 		seq_printf(p, "  %s", action->name);
 
@@ -210,12 +210,12 @@ int cpu_claim_irq(unsigned int irq, struct hw_interrupt_type *type, void *data)
 {
 	if (irq_desc[irq].action)
 		return -EBUSY;
-	if (irq_desc[irq].handler != &cpu_interrupt_type)
+	if (irq_desc[irq].chip != &cpu_interrupt_type)
 		return -EBUSY;
 
 	if (type) {
-		irq_desc[irq].handler = type;
-		irq_desc[irq].handler_data = data;
+		irq_desc[irq].chip = type;
+		irq_desc[irq].chip_data = data;
 		cpu_interrupt_type.enable(irq);
 	}
 	return 0;
@@ -378,7 +378,7 @@ static void claim_cpu_irqs(void)
 {
 	int i;
 	for (i = CPU_IRQ_BASE; i <= CPU_IRQ_MAX; i++) {
-		irq_desc[i].handler = &cpu_interrupt_type;
+		irq_desc[i].chip = &cpu_interrupt_type;
 	}
 
 	irq_desc[TIMER_IRQ].action = &timer_action;
diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
index e253a45dcf1..1bfad7c2f8c 100644
--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -193,10 +193,10 @@ void default_machine_crash_shutdown(struct pt_regs *regs)
 		struct irq_desc *desc = irq_descp(irq);
 
 		if (desc->status & IRQ_INPROGRESS)
-			desc->handler->end(irq);
+			desc->chip->end(irq);
 
 		if (!(desc->status & IRQ_DISABLED))
-			desc->handler->disable(irq);
+			desc->chip->disable(irq);
 	}
 
 	if (ppc_md.kexec_cpu_down)
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 40d4c14fde8..8cfc779d882 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -120,8 +120,8 @@ int show_interrupts(struct seq_file *p, void *v)
 #else
 		seq_printf(p, "%10u ", kstat_irqs(i));
 #endif /* CONFIG_SMP */
-		if (desc->handler)
-			seq_printf(p, " %s ", desc->handler->typename);
+		if (desc->chip)
+			seq_printf(p, " %s ", desc->chip->typename);
 		else
 			seq_puts(p, "  None      ");
 		seq_printf(p, "%s", (desc->status & IRQ_LEVEL) ? "Level " : "Edge  ");
@@ -169,8 +169,8 @@ void fixup_irqs(cpumask_t map)
 			printk("Breaking affinity for irq %i\n", irq);
 			mask = map;
 		}
-		if (irq_desc[irq].handler->set_affinity)
-			irq_desc[irq].handler->set_affinity(irq, mask);
+		if (irq_desc[irq].chip->set_affinity)
+			irq_desc[irq].chip->set_affinity(irq, mask);
 		else if (irq_desc[irq].action && !(warned++))
 			printk("Cannot set affinity for irq %i\n", irq);
 	}
diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c
index 1bbf822b4ef..7bff3cbc572 100644
--- a/arch/powerpc/platforms/cell/interrupt.c
+++ b/arch/powerpc/platforms/cell/interrupt.c
@@ -307,7 +307,7 @@ static void iic_request_ipi(int ipi, const char *name)
 	irq = iic_ipi_to_irq(ipi);
 	/* IPIs are marked SA_INTERRUPT as they must run with irqs
 	 * disabled */
-	get_irq_desc(irq)->handler = &iic_pic;
+	get_irq_desc(irq)->chip = &iic_pic;
 	get_irq_desc(irq)->status |= IRQ_PER_CPU;
 	request_irq(irq, iic_ipi_action, SA_INTERRUPT, name, NULL);
 }
@@ -330,7 +330,7 @@ static void iic_setup_spe_handlers(void)
 	for (be=0; be < num_present_cpus() / 2; be++) {
 		for (isrc = 0; isrc < IIC_CLASS_STRIDE * 3; isrc++) {
 			int irq = IIC_NODE_STRIDE * be + IIC_SPE_OFFSET + isrc;
-			get_irq_desc(irq)->handler = &iic_pic;
+			get_irq_desc(irq)->chip = &iic_pic;
 		}
 	}
 }
diff --git a/arch/powerpc/platforms/cell/spider-pic.c b/arch/powerpc/platforms/cell/spider-pic.c
index 55cbdd77a62..7c3a0b6d34f 100644
--- a/arch/powerpc/platforms/cell/spider-pic.c
+++ b/arch/powerpc/platforms/cell/spider-pic.c
@@ -162,7 +162,7 @@ void spider_init_IRQ_hardcoded(void)
 		spider_pics[node] = ioremap(spiderpic, 0x800);
 		for (n = 0; n < IIC_NUM_EXT; n++) {
 			int irq = n + IIC_EXT_OFFSET + node * IIC_NODE_STRIDE;
-			get_irq_desc(irq)->handler = &spider_pic;
+			get_irq_desc(irq)->chip = &spider_pic;
 		}
 
  		/* do not mask any interrupts because of level */
@@ -217,7 +217,7 @@ void spider_init_IRQ(void)
 
 		for (n = 0; n < IIC_NUM_EXT; n++) {
 			int irq = n + IIC_EXT_OFFSET + node * IIC_NODE_STRIDE;
-			get_irq_desc(irq)->handler = &spider_pic;
+			get_irq_desc(irq)->chip = &spider_pic;
 		}
 
 		/* do not mask any interrupts because of level */
diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c
index 62bbbcf5ded..33bb4aa0e1e 100644
--- a/arch/powerpc/platforms/iseries/irq.c
+++ b/arch/powerpc/platforms/iseries/irq.c
@@ -242,9 +242,9 @@ void __init iSeries_activate_IRQs()
 	for_each_irq (irq) {
 		irq_desc_t *desc = get_irq_desc(irq);
 
-		if (desc && desc->handler && desc->handler->startup) {
+		if (desc && desc->chip && desc->chip->startup) {
 			spin_lock_irqsave(&desc->lock, flags);
-			desc->handler->startup(irq);
+			desc->chip->startup(irq);
 			spin_unlock_irqrestore(&desc->lock, flags);
 		}
 	}
@@ -324,7 +324,7 @@ int __init iSeries_allocate_IRQ(HvBusNumber bus,
 		+ function;
 	virtirq = virt_irq_create_mapping(realirq);
 
-	irq_desc[virtirq].handler = &iSeries_IRQ_handler;
+	irq_desc[virtirq].chip = &iSeries_IRQ_handler;
 	return virtirq;
 }
 
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index 18bf3011d1e..9f6189af6dd 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -446,7 +446,7 @@ static void __init pmac_pic_probe_oldstyle(void)
 
 	/* Set the handler for the main PIC */
 	for ( i = 0; i < max_real_irqs ; i++ )
-		irq_desc[i].handler = &pmac_pic;
+		irq_desc[i].chip = &pmac_pic;
 
 	/* Get addresses of first controller if we have a node for it */
 	BUG_ON(of_address_to_resource(master, 0, &r));
@@ -493,7 +493,7 @@ static void __init pmac_pic_probe_oldstyle(void)
 	/* Setup handlers for secondary controller and hook cascade irq*/
 	if (slave) {
 		for ( i = max_real_irqs ; i < max_irqs ; i++ )
-			irq_desc[i].handler = &gatwick_pic;
+			irq_desc[i].chip = &gatwick_pic;
 		setup_irq(irq_cascade, &gatwick_cascade_action);
 	}
 	printk(KERN_INFO "irq: System has %d possible interrupts\n", max_irqs);
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index b14f9b5c114..bdc9e26a93c 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -558,7 +558,7 @@ nextnode:
 	}
 
 	for (i = irq_offset_value(); i < NR_IRQS; ++i)
-		get_irq_desc(i)->handler = &xics_pic;
+		get_irq_desc(i)->chip = &xics_pic;
 
 	xics_setup_cpu();
 
@@ -701,9 +701,9 @@ void xics_migrate_irqs_away(void)
 			continue;
 
 		/* We only need to migrate enabled IRQS */
-		if (desc == NULL || desc->handler == NULL
+		if (desc == NULL || desc->chip == NULL
 		    || desc->action == NULL
-		    || desc->handler->set_affinity == NULL)
+		    || desc->chip->set_affinity == NULL)
 			continue;
 
 		spin_lock_irqsave(&desc->lock, flags);
@@ -728,7 +728,7 @@ void xics_migrate_irqs_away(void)
 		       virq, cpu);
 
 		/* Reset affinity to all cpus */
-		desc->handler->set_affinity(virq, CPU_MASK_ALL);
+		desc->chip->set_affinity(virq, CPU_MASK_ALL);
 		irq_affinity[virq] = CPU_MASK_ALL;
 unlock:
 		spin_unlock_irqrestore(&desc->lock, flags);
diff --git a/arch/powerpc/sysdev/i8259.c b/arch/powerpc/sysdev/i8259.c
index b7ac32fdd77..2bff30f6d63 100644
--- a/arch/powerpc/sysdev/i8259.c
+++ b/arch/powerpc/sysdev/i8259.c
@@ -208,7 +208,7 @@ void __init i8259_init(unsigned long intack_addr, int offset)
 	spin_unlock_irqrestore(&i8259_lock, flags);
 
 	for (i = 0; i < NUM_ISA_INTERRUPTS; ++i)
-		irq_desc[offset + i].handler = &i8259_pic;
+		irq_desc[offset + i].chip = &i8259_pic;
 
 	/* reserve our resources */
 	setup_irq(offset + 2, &i8259_irqaction);
diff --git a/arch/powerpc/sysdev/ipic.c b/arch/powerpc/sysdev/ipic.c
index 8f01e0f1d84..46801f5ec03 100644
--- a/arch/powerpc/sysdev/ipic.c
+++ b/arch/powerpc/sysdev/ipic.c
@@ -472,7 +472,7 @@ void __init ipic_init(phys_addr_t phys_addr,
 	ipic_write(primary_ipic->regs, IPIC_SEMSR, temp);
 
 	for (i = 0 ; i < NR_IPIC_INTS ; i++) {
-		irq_desc[i+irq_offset].handler = &ipic;
+		irq_desc[i+irq_offset].chip = &ipic;
 		irq_desc[i+irq_offset].status = IRQ_LEVEL;
 	}
 
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index bffe50d02c9..f4613ee6b7a 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -379,14 +379,14 @@ static inline u32 mpic_physmask(u32 cpumask)
 /* Get the mpic structure from the IPI number */
 static inline struct mpic * mpic_from_ipi(unsigned int ipi)
 {
-	return container_of(irq_desc[ipi].handler, struct mpic, hc_ipi);
+	return container_of(irq_desc[ipi].chip, struct mpic, hc_ipi);
 }
 #endif
 
 /* Get the mpic structure from the irq number */
 static inline struct mpic * mpic_from_irq(unsigned int irq)
 {
-	return container_of(irq_desc[irq].handler, struct mpic, hc_irq);
+	return container_of(irq_desc[irq].chip, struct mpic, hc_irq);
 }
 
 /* Send an EOI */
@@ -752,7 +752,7 @@ void __init mpic_init(struct mpic *mpic)
 		if (!(mpic->flags & MPIC_PRIMARY))
 			continue;
 		irq_desc[mpic->ipi_offset+i].status |= IRQ_PER_CPU;
-		irq_desc[mpic->ipi_offset+i].handler = &mpic->hc_ipi;
+		irq_desc[mpic->ipi_offset+i].chip = &mpic->hc_ipi;
 #endif /* CONFIG_SMP */
 	}
 
@@ -813,7 +813,7 @@ void __init mpic_init(struct mpic *mpic)
 		/* init linux descriptors */
 		if (i < mpic->irq_count) {
 			irq_desc[mpic->irq_offset+i].status = level ? IRQ_LEVEL : 0;
-			irq_desc[mpic->irq_offset+i].handler = &mpic->hc_irq;
+			irq_desc[mpic->irq_offset+i].chip = &mpic->hc_irq;
 		}
 	}
 	
diff --git a/arch/ppc/8xx_io/commproc.c b/arch/ppc/8xx_io/commproc.c
index 12b84ca5132..9b3ace26280 100644
--- a/arch/ppc/8xx_io/commproc.c
+++ b/arch/ppc/8xx_io/commproc.c
@@ -187,7 +187,7 @@ cpm_interrupt_init(void)
          * interrupt vectors
          */
         for ( i = CPM_IRQ_OFFSET ; i < CPM_IRQ_OFFSET + NR_CPM_INTS ; i++ )
-                irq_desc[i].handler = &cpm_pic;
+                irq_desc[i].chip = &cpm_pic;
 
 	/* Set our interrupt handler with the core CPU.	*/
 	if (setup_irq(CPM_INTERRUPT, &cpm_interrupt_irqaction))
diff --git a/arch/ppc/platforms/apus_setup.c b/arch/ppc/platforms/apus_setup.c
index fe0cdc04d43..5c4118a459f 100644
--- a/arch/ppc/platforms/apus_setup.c
+++ b/arch/ppc/platforms/apus_setup.c
@@ -734,9 +734,9 @@ void apus_init_IRQ(void)
 	for ( i = 0 ; i < AMI_IRQS; i++ ) {
 		irq_desc[i].status = IRQ_LEVEL;
 		if (i < IRQ_AMIGA_AUTO) {
-			irq_desc[i].handler = &amiga_irqctrl;
+			irq_desc[i].chip = &amiga_irqctrl;
 		} else {
-			irq_desc[i].handler = &amiga_sys_irqctrl;
+			irq_desc[i].chip = &amiga_sys_irqctrl;
 			action = &amiga_sys_irqaction[i-IRQ_AMIGA_AUTO];
 			if (action->name)
 				setup_irq(i, action);
diff --git a/arch/ppc/platforms/sbc82xx.c b/arch/ppc/platforms/sbc82xx.c
index 866807b4ad0..41006d2b4b3 100644
--- a/arch/ppc/platforms/sbc82xx.c
+++ b/arch/ppc/platforms/sbc82xx.c
@@ -172,7 +172,7 @@ void __init sbc82xx_init_IRQ(void)
 	
 	/* Set up the interrupt handlers for the i8259 IRQs */
 	for (i = NR_SIU_INTS; i < NR_SIU_INTS + 8; i++) {
-                irq_desc[i].handler = &sbc82xx_i8259_ic;
+                irq_desc[i].chip = &sbc82xx_i8259_ic;
 		irq_desc[i].status |= IRQ_LEVEL;
 	}
 
diff --git a/arch/ppc/syslib/cpc700_pic.c b/arch/ppc/syslib/cpc700_pic.c
index 5add0a919ef..172aa215fdb 100644
--- a/arch/ppc/syslib/cpc700_pic.c
+++ b/arch/ppc/syslib/cpc700_pic.c
@@ -140,12 +140,12 @@ cpc700_init_IRQ(void)
 						        /* IRQ 0 is highest */
 
 	for (i = 0; i < 17; i++) {
-		irq_desc[i].handler = &cpc700_pic;
+		irq_desc[i].chip = &cpc700_pic;
 		cpc700_pic_init_irq(i);
 	}
 
 	for (i = 20; i < 32; i++) {
-		irq_desc[i].handler = &cpc700_pic;
+		irq_desc[i].chip = &cpc700_pic;
 		cpc700_pic_init_irq(i);
 	}
 
diff --git a/arch/ppc/syslib/cpm2_pic.c b/arch/ppc/syslib/cpm2_pic.c
index 29d95d415ce..c0fee0beb81 100644
--- a/arch/ppc/syslib/cpm2_pic.c
+++ b/arch/ppc/syslib/cpm2_pic.c
@@ -171,7 +171,7 @@ void cpm2_init_IRQ(void)
 	/* Enable chaining to OpenPIC, and make everything level
 	 */
 	for (i = 0; i < NR_CPM_INTS; i++) {
-		irq_desc[i+CPM_IRQ_OFFSET].handler = &cpm2_pic;
+		irq_desc[i+CPM_IRQ_OFFSET].chip = &cpm2_pic;
 		irq_desc[i+CPM_IRQ_OFFSET].status |= IRQ_LEVEL;
 	}
 }
diff --git a/arch/ppc/syslib/gt64260_pic.c b/arch/ppc/syslib/gt64260_pic.c
index dc3bd9ecbbf..91096b38ae7 100644
--- a/arch/ppc/syslib/gt64260_pic.c
+++ b/arch/ppc/syslib/gt64260_pic.c
@@ -98,7 +98,7 @@ gt64260_init_irq(void)
 
 	/* use the gt64260 for all (possible) interrupt sources */
 	for (i = gt64260_irq_base; i < (gt64260_irq_base + 96); i++)
-		irq_desc[i].handler = &gt64260_pic;
+		irq_desc[i].chip = &gt64260_pic;
 
 	if (ppc_md.progress)
 		ppc_md.progress("gt64260_init_irq: exit", 0x0);
diff --git a/arch/ppc/syslib/m82xx_pci.c b/arch/ppc/syslib/m82xx_pci.c
index 1941a8c7ca9..63fa5b31339 100644
--- a/arch/ppc/syslib/m82xx_pci.c
+++ b/arch/ppc/syslib/m82xx_pci.c
@@ -159,7 +159,7 @@ pq2pci_init_irq(void)
 	immap->im_memctl.memc_or8 = 0xffff8010;
 #endif
 	for (irq = NR_CPM_INTS; irq < NR_CPM_INTS + 4; irq++)
-		irq_desc[irq].handler = &pq2pci_ic;
+		irq_desc[irq].chip = &pq2pci_ic;
 
 	/* make PCI IRQ level sensitive */
 	immap->im_intctl.ic_siexr &=
diff --git a/arch/ppc/syslib/m8xx_setup.c b/arch/ppc/syslib/m8xx_setup.c
index dae9af78bde..0c4c0de7c59 100644
--- a/arch/ppc/syslib/m8xx_setup.c
+++ b/arch/ppc/syslib/m8xx_setup.c
@@ -347,13 +347,13 @@ m8xx_init_IRQ(void)
 	int i;
 
 	for (i = SIU_IRQ_OFFSET ; i < SIU_IRQ_OFFSET + NR_SIU_INTS ; i++)
-		irq_desc[i].handler = &ppc8xx_pic;
+		irq_desc[i].chip = &ppc8xx_pic;
 
 	cpm_interrupt_init();
 
 #if defined(CONFIG_PCI)
 	for (i = I8259_IRQ_OFFSET ; i < I8259_IRQ_OFFSET + NR_8259_INTS ; i++)
-		irq_desc[i].handler = &i8259_pic;
+		irq_desc[i].chip = &i8259_pic;
 
 	i8259_pic_irq_offset = I8259_IRQ_OFFSET;
 	i8259_init(0);
diff --git a/arch/ppc/syslib/mpc52xx_pic.c b/arch/ppc/syslib/mpc52xx_pic.c
index c4406f9dc6a..6425b5cee7d 100644
--- a/arch/ppc/syslib/mpc52xx_pic.c
+++ b/arch/ppc/syslib/mpc52xx_pic.c
@@ -204,9 +204,9 @@ mpc52xx_init_irq(void)
 	out_be32(&intr->main_pri1, 0);
 	out_be32(&intr->main_pri2, 0);
 
-	/* Initialize irq_desc[i].handler's with mpc52xx_ic. */
+	/* Initialize irq_desc[i].chip's with mpc52xx_ic. */
 	for (i = 0; i < NR_IRQS; i++) {
-		irq_desc[i].handler = &mpc52xx_ic;
+		irq_desc[i].chip = &mpc52xx_ic;
 		irq_desc[i].status = IRQ_LEVEL;
 	}
 
diff --git a/arch/ppc/syslib/mv64360_pic.c b/arch/ppc/syslib/mv64360_pic.c
index 5a19697060f..a4244d46838 100644
--- a/arch/ppc/syslib/mv64360_pic.c
+++ b/arch/ppc/syslib/mv64360_pic.c
@@ -119,7 +119,7 @@ mv64360_init_irq(void)
 	/* All interrupts are level interrupts */
 	for (i = mv64360_irq_base; i < (mv64360_irq_base + 96); i++) {
 		irq_desc[i].status |= IRQ_LEVEL;
-		irq_desc[i].handler = &mv64360_pic;
+		irq_desc[i].chip = &mv64360_pic;
 	}
 
 	if (ppc_md.progress)
diff --git a/arch/ppc/syslib/open_pic.c b/arch/ppc/syslib/open_pic.c
index 70456c8f998..822058c2983 100644
--- a/arch/ppc/syslib/open_pic.c
+++ b/arch/ppc/syslib/open_pic.c
@@ -373,7 +373,7 @@ void __init openpic_init(int offset)
 				OPENPIC_VEC_IPI+i+offset);
 		/* IPIs are per-CPU */
 		irq_desc[OPENPIC_VEC_IPI+i+offset].status |= IRQ_PER_CPU;
-		irq_desc[OPENPIC_VEC_IPI+i+offset].handler = &open_pic_ipi;
+		irq_desc[OPENPIC_VEC_IPI+i+offset].chip = &open_pic_ipi;
 	}
 #endif
 
@@ -408,7 +408,7 @@ void __init openpic_init(int offset)
 
 	/* Init descriptors */
 	for (i = offset; i < NumSources + offset; i++)
-		irq_desc[i].handler = &open_pic;
+		irq_desc[i].chip = &open_pic;
 
 	/* Initialize the spurious interrupt */
 	if (ppc_md.progress) ppc_md.progress("openpic: spurious",0x3bd);
diff --git a/arch/ppc/syslib/open_pic2.c b/arch/ppc/syslib/open_pic2.c
index bcbe40de26f..b8154efff6e 100644
--- a/arch/ppc/syslib/open_pic2.c
+++ b/arch/ppc/syslib/open_pic2.c
@@ -290,7 +290,7 @@ void __init openpic2_init(int offset)
 
 	/* Init descriptors */
 	for (i = offset; i < NumSources + offset; i++)
-		irq_desc[i].handler = &open_pic2;
+		irq_desc[i].chip = &open_pic2;
 
 	/* Initialize the spurious interrupt */
 	if (ppc_md.progress) ppc_md.progress("openpic2: spurious",0x3bd);
diff --git a/arch/ppc/syslib/ppc403_pic.c b/arch/ppc/syslib/ppc403_pic.c
index c46043c4722..1584c8b1229 100644
--- a/arch/ppc/syslib/ppc403_pic.c
+++ b/arch/ppc/syslib/ppc403_pic.c
@@ -121,5 +121,5 @@ ppc4xx_pic_init(void)
 	ppc_md.get_irq = ppc403_pic_get_irq;
 
 	for (i = 0; i < NR_IRQS; i++)
-		irq_desc[i].handler = &ppc403_aic;
+		irq_desc[i].chip = &ppc403_aic;
 }
diff --git a/arch/ppc/syslib/ppc4xx_pic.c b/arch/ppc/syslib/ppc4xx_pic.c
index fd9af0fc0e9..e669c1335d4 100644
--- a/arch/ppc/syslib/ppc4xx_pic.c
+++ b/arch/ppc/syslib/ppc4xx_pic.c
@@ -276,7 +276,7 @@ void __init ppc4xx_pic_init(void)
 
 	/* Attach low-level handlers */
 	for (i = 0; i < (NR_UICS << 5); ++i) {
-		irq_desc[i].handler = &__uic[i >> 5].decl;
+		irq_desc[i].chip = &__uic[i >> 5].decl;
 		if (is_level_sensitive(i))
 			irq_desc[i].status |= IRQ_LEVEL;
 	}
diff --git a/arch/ppc/syslib/xilinx_pic.c b/arch/ppc/syslib/xilinx_pic.c
index e672b600f31..39a93dc6375 100644
--- a/arch/ppc/syslib/xilinx_pic.c
+++ b/arch/ppc/syslib/xilinx_pic.c
@@ -143,7 +143,7 @@ ppc4xx_pic_init(void)
 	ppc_md.get_irq = xilinx_pic_get_irq;
 
 	for (i = 0; i < NR_IRQS; ++i) {
-		irq_desc[i].handler = &xilinx_intc;
+		irq_desc[i].chip = &xilinx_intc;
 
 		if (XPAR_INTC_0_KIND_OF_INTR & (0x00000001 << i))
 			irq_desc[i].status &= ~IRQ_LEVEL;
diff --git a/arch/sh/boards/adx/irq_maskreg.c b/arch/sh/boards/adx/irq_maskreg.c
index c0973f8d57b..357fab1bac2 100644
--- a/arch/sh/boards/adx/irq_maskreg.c
+++ b/arch/sh/boards/adx/irq_maskreg.c
@@ -102,6 +102,6 @@ static void end_maskreg_irq(unsigned int irq)
 void make_maskreg_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
-	irq_desc[irq].handler = &maskreg_irq_type;
+	irq_desc[irq].chip = &maskreg_irq_type;
 	disable_maskreg_irq(irq);
 }
diff --git a/arch/sh/boards/bigsur/irq.c b/arch/sh/boards/bigsur/irq.c
index 6ddbcc77244..1d32425782c 100644
--- a/arch/sh/boards/bigsur/irq.c
+++ b/arch/sh/boards/bigsur/irq.c
@@ -253,7 +253,7 @@ static void make_bigsur_l1isr(unsigned int irq) {
         /* sanity check first */
         if(irq >= BIGSUR_IRQ_LOW && irq < BIGSUR_IRQ_HIGH) {
                 /* save the handler in the main description table */
-                irq_desc[irq].handler = &bigsur_l1irq_type;
+                irq_desc[irq].chip = &bigsur_l1irq_type;
                 irq_desc[irq].status = IRQ_DISABLED;
                 irq_desc[irq].action = 0;
                 irq_desc[irq].depth = 1;
@@ -270,7 +270,7 @@ static void make_bigsur_l2isr(unsigned int irq) {
         /* sanity check first */
         if(irq >= BIGSUR_2NDLVL_IRQ_LOW && irq < BIGSUR_2NDLVL_IRQ_HIGH) {
                 /* save the handler in the main description table */
-                irq_desc[irq].handler = &bigsur_l2irq_type;
+                irq_desc[irq].chip = &bigsur_l2irq_type;
                 irq_desc[irq].status = IRQ_DISABLED;
                 irq_desc[irq].action = 0;
                 irq_desc[irq].depth = 1;
diff --git a/arch/sh/boards/cqreek/irq.c b/arch/sh/boards/cqreek/irq.c
index d1da0d84456..2955adc5231 100644
--- a/arch/sh/boards/cqreek/irq.c
+++ b/arch/sh/boards/cqreek/irq.c
@@ -103,7 +103,7 @@ void __init init_cqreek_IRQ(void)
 		cqreek_irq_data[14].stat_port = BRIDGE_IDE_INTR_STAT;
 		cqreek_irq_data[14].bit = 1;
 
-		irq_desc[14].handler = &cqreek_irq_type;
+		irq_desc[14].chip = &cqreek_irq_type;
 		irq_desc[14].status = IRQ_DISABLED;
 		irq_desc[14].action = 0;
 		irq_desc[14].depth = 1;
@@ -117,7 +117,7 @@ void __init init_cqreek_IRQ(void)
 		cqreek_irq_data[10].bit = (1 << 10);
 
 		/* XXX: Err... we may need demultiplexer for ISA irq... */
-		irq_desc[10].handler = &cqreek_irq_type;
+		irq_desc[10].chip = &cqreek_irq_type;
 		irq_desc[10].status = IRQ_DISABLED;
 		irq_desc[10].action = 0;
 		irq_desc[10].depth = 1;
diff --git a/arch/sh/boards/dreamcast/setup.c b/arch/sh/boards/dreamcast/setup.c
index 55dece35cde..0027b80a234 100644
--- a/arch/sh/boards/dreamcast/setup.c
+++ b/arch/sh/boards/dreamcast/setup.c
@@ -70,7 +70,7 @@ int __init platform_setup(void)
 
 	/* Assign all virtual IRQs to the System ASIC int. handler */
 	for (i = HW_EVENT_IRQ_BASE; i < HW_EVENT_IRQ_MAX; i++)
-		irq_desc[i].handler = &systemasic_int;
+		irq_desc[i].chip = &systemasic_int;
 
 	board_time_init = aica_time_init;
 
diff --git a/arch/sh/boards/ec3104/setup.c b/arch/sh/boards/ec3104/setup.c
index 5130ba2b6ff..4b3ef16a0e9 100644
--- a/arch/sh/boards/ec3104/setup.c
+++ b/arch/sh/boards/ec3104/setup.c
@@ -63,7 +63,7 @@ int __init platform_setup(void)
 		str[i] = ctrl_readb(EC3104_BASE + i);
 
 	for (i = EC3104_IRQBASE; i < EC3104_IRQBASE + 32; i++)
-		irq_desc[i].handler = &ec3104_int;
+		irq_desc[i].chip = &ec3104_int;
 
 	printk("initializing EC3104 \"%.8s\" at %08x, IRQ %d, IRQ base %d\n",
 	       str, EC3104_BASE, EC3104_IRQ, EC3104_IRQBASE);
diff --git a/arch/sh/boards/harp/irq.c b/arch/sh/boards/harp/irq.c
index 52d0ba39031..701fa55d529 100644
--- a/arch/sh/boards/harp/irq.c
+++ b/arch/sh/boards/harp/irq.c
@@ -114,7 +114,7 @@ static void enable_harp_irq(unsigned int irq)
 static void __init make_harp_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
-	irq_desc[irq].handler = &harp_irq_type;
+	irq_desc[irq].chip = &harp_irq_type;
 	disable_harp_irq(irq);
 }
 
diff --git a/arch/sh/boards/mpc1211/setup.c b/arch/sh/boards/mpc1211/setup.c
index 2bb581b9168..b72f009c52c 100644
--- a/arch/sh/boards/mpc1211/setup.c
+++ b/arch/sh/boards/mpc1211/setup.c
@@ -194,7 +194,7 @@ static struct hw_interrupt_type mpc1211_irq_type = {
 
 static void make_mpc1211_irq(unsigned int irq)
 {
-	irq_desc[irq].handler = &mpc1211_irq_type;
+	irq_desc[irq].chip = &mpc1211_irq_type;
 	irq_desc[irq].status  = IRQ_DISABLED;
 	irq_desc[irq].action  = 0;
 	irq_desc[irq].depth   = 1;
diff --git a/arch/sh/boards/overdrive/irq.c b/arch/sh/boards/overdrive/irq.c
index 715e8feb3a6..2c13a7de6b2 100644
--- a/arch/sh/boards/overdrive/irq.c
+++ b/arch/sh/boards/overdrive/irq.c
@@ -150,7 +150,7 @@ static void enable_od_irq(unsigned int irq)
 static void __init make_od_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
-	irq_desc[irq].handler = &od_irq_type;
+	irq_desc[irq].chip = &od_irq_type;
 	disable_od_irq(irq);
 }
 
diff --git a/arch/sh/boards/renesas/hs7751rvoip/irq.c b/arch/sh/boards/renesas/hs7751rvoip/irq.c
index ed4c5b50ea4..52a98b524e1 100644
--- a/arch/sh/boards/renesas/hs7751rvoip/irq.c
+++ b/arch/sh/boards/renesas/hs7751rvoip/irq.c
@@ -86,7 +86,7 @@ static struct hw_interrupt_type hs7751rvoip_irq_type = {
 static void make_hs7751rvoip_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
-	irq_desc[irq].handler = &hs7751rvoip_irq_type;
+	irq_desc[irq].chip = &hs7751rvoip_irq_type;
 	disable_hs7751rvoip_irq(irq);
 }
 
diff --git a/arch/sh/boards/renesas/rts7751r2d/irq.c b/arch/sh/boards/renesas/rts7751r2d/irq.c
index d36c9374aed..e16915d9cda 100644
--- a/arch/sh/boards/renesas/rts7751r2d/irq.c
+++ b/arch/sh/boards/renesas/rts7751r2d/irq.c
@@ -100,7 +100,7 @@ static struct hw_interrupt_type rts7751r2d_irq_type = {
 static void make_rts7751r2d_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
-	irq_desc[irq].handler = &rts7751r2d_irq_type;
+	irq_desc[irq].chip = &rts7751r2d_irq_type;
 	disable_rts7751r2d_irq(irq);
 }
 
diff --git a/arch/sh/boards/renesas/systemh/irq.c b/arch/sh/boards/renesas/systemh/irq.c
index 7a2eb10edb5..84597918105 100644
--- a/arch/sh/boards/renesas/systemh/irq.c
+++ b/arch/sh/boards/renesas/systemh/irq.c
@@ -105,7 +105,7 @@ static void end_systemh_irq(unsigned int irq)
 void make_systemh_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
-	irq_desc[irq].handler = &systemh_irq_type;
+	irq_desc[irq].chip = &systemh_irq_type;
 	disable_systemh_irq(irq);
 }
 
diff --git a/arch/sh/boards/se/73180/irq.c b/arch/sh/boards/se/73180/irq.c
index 70f04caad9a..402735c7c89 100644
--- a/arch/sh/boards/se/73180/irq.c
+++ b/arch/sh/boards/se/73180/irq.c
@@ -85,7 +85,7 @@ void
 make_intreq_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
-	irq_desc[irq].handler = &intreq_irq_type;
+	irq_desc[irq].chip = &intreq_irq_type;
 	disable_intreq_irq(irq);
 }
 
diff --git a/arch/sh/boards/superh/microdev/irq.c b/arch/sh/boards/superh/microdev/irq.c
index efcbd86b7cd..cb5999425d1 100644
--- a/arch/sh/boards/superh/microdev/irq.c
+++ b/arch/sh/boards/superh/microdev/irq.c
@@ -147,7 +147,7 @@ static void enable_microdev_irq(unsigned int irq)
 static void __init make_microdev_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
-	irq_desc[irq].handler = &microdev_irq_type;
+	irq_desc[irq].chip = &microdev_irq_type;
 	disable_microdev_irq(irq);
 }
 
diff --git a/arch/sh/cchips/hd6446x/hd64461/setup.c b/arch/sh/cchips/hd6446x/hd64461/setup.c
index f014b9bf692..724db04cb39 100644
--- a/arch/sh/cchips/hd6446x/hd64461/setup.c
+++ b/arch/sh/cchips/hd6446x/hd64461/setup.c
@@ -154,7 +154,7 @@ int __init setup_hd64461(void)
 	outw(0xffff, HD64461_NIMR);
 
 	for (i = HD64461_IRQBASE; i < HD64461_IRQBASE + 16; i++) {
-		irq_desc[i].handler = &hd64461_irq_type;
+		irq_desc[i].chip = &hd64461_irq_type;
 	}
 
 	setup_irq(CONFIG_HD64461_IRQ, &irq0);
diff --git a/arch/sh/cchips/hd6446x/hd64465/setup.c b/arch/sh/cchips/hd6446x/hd64465/setup.c
index 68e4c4e4283..cf9142c620b 100644
--- a/arch/sh/cchips/hd6446x/hd64465/setup.c
+++ b/arch/sh/cchips/hd6446x/hd64465/setup.c
@@ -182,7 +182,7 @@ static int __init setup_hd64465(void)
 	outw(0xffff, HD64465_REG_NIMR); 	/* mask all interrupts */
 
 	for (i = 0; i < HD64465_IRQ_NUM ; i++) {
-		irq_desc[HD64465_IRQ_BASE + i].handler = &hd64465_irq_type;
+		irq_desc[HD64465_IRQ_BASE + i].chip = &hd64465_irq_type;
 	}
 
 	setup_irq(CONFIG_HD64465_IRQ, &irq0);
diff --git a/arch/sh/cchips/voyagergx/irq.c b/arch/sh/cchips/voyagergx/irq.c
index 2ee330b3c38..892214bade1 100644
--- a/arch/sh/cchips/voyagergx/irq.c
+++ b/arch/sh/cchips/voyagergx/irq.c
@@ -191,7 +191,7 @@ void __init setup_voyagergx_irq(void)
 			flag = 1;
 		}
 		if (flag == 1)
-			irq_desc[VOYAGER_IRQ_BASE + i].handler = &voyagergx_irq_type;
+			irq_desc[VOYAGER_IRQ_BASE + i].chip = &voyagergx_irq_type;
 	}
 
 	setup_irq(IRQ_VOYAGER, &irq0);
diff --git a/arch/sh/kernel/cpu/irq/imask.c b/arch/sh/kernel/cpu/irq/imask.c
index baed9a550d3..a33ae3e0a5a 100644
--- a/arch/sh/kernel/cpu/irq/imask.c
+++ b/arch/sh/kernel/cpu/irq/imask.c
@@ -105,6 +105,6 @@ static void shutdown_imask_irq(unsigned int irq)
 void make_imask_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
-	irq_desc[irq].handler = &imask_irq_type;
+	irq_desc[irq].chip = &imask_irq_type;
 	enable_irq(irq);
 }
diff --git a/arch/sh/kernel/cpu/irq/intc2.c b/arch/sh/kernel/cpu/irq/intc2.c
index 06e8afab32e..30064bf6e15 100644
--- a/arch/sh/kernel/cpu/irq/intc2.c
+++ b/arch/sh/kernel/cpu/irq/intc2.c
@@ -137,7 +137,7 @@ void make_intc2_irq(unsigned int irq,
 
 	local_irq_restore(flags);
 
-	irq_desc[irq].handler = &intc2_irq_type;
+	irq_desc[irq].chip = &intc2_irq_type;
 
 	disable_intc2_irq(irq);
 }
diff --git a/arch/sh/kernel/cpu/irq/ipr.c b/arch/sh/kernel/cpu/irq/ipr.c
index e55150ed085..0373b65c77f 100644
--- a/arch/sh/kernel/cpu/irq/ipr.c
+++ b/arch/sh/kernel/cpu/irq/ipr.c
@@ -115,7 +115,7 @@ void make_ipr_irq(unsigned int irq, unsigned int addr, int pos, int priority)
 	ipr_data[irq].shift = pos*4; /* POSition (0-3) x 4 means shift */
 	ipr_data[irq].priority = priority;
 
-	irq_desc[irq].handler = &ipr_irq_type;
+	irq_desc[irq].chip = &ipr_irq_type;
 	disable_ipr_irq(irq);
 }
 
diff --git a/arch/sh/kernel/cpu/irq/pint.c b/arch/sh/kernel/cpu/irq/pint.c
index 95d6024fe1a..714963a25bb 100644
--- a/arch/sh/kernel/cpu/irq/pint.c
+++ b/arch/sh/kernel/cpu/irq/pint.c
@@ -85,7 +85,7 @@ static void end_pint_irq(unsigned int irq)
 void make_pint_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
-	irq_desc[irq].handler = &pint_irq_type;
+	irq_desc[irq].chip = &pint_irq_type;
 	disable_pint_irq(irq);
 }
 
diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
index b56e79632f2..c2e07f7f349 100644
--- a/arch/sh/kernel/irq.c
+++ b/arch/sh/kernel/irq.c
@@ -47,7 +47,7 @@ int show_interrupts(struct seq_file *p, void *v)
 			goto unlock;
 		seq_printf(p, "%3d: ",i);
 		seq_printf(p, "%10u ", kstat_irqs(i));
-		seq_printf(p, " %14s", irq_desc[i].handler->typename);
+		seq_printf(p, " %14s", irq_desc[i].chip->typename);
 		seq_printf(p, "  %s", action->name);
 
 		for (action=action->next; action; action = action->next)
diff --git a/arch/sh64/kernel/irq.c b/arch/sh64/kernel/irq.c
index d69879c0e06..675776a5477 100644
--- a/arch/sh64/kernel/irq.c
+++ b/arch/sh64/kernel/irq.c
@@ -65,7 +65,7 @@ int show_interrupts(struct seq_file *p, void *v)
 			goto unlock;
 		seq_printf(p, "%3d: ",i);
 		seq_printf(p, "%10u ", kstat_irqs(i));
-		seq_printf(p, " %14s", irq_desc[i].handler->typename);
+		seq_printf(p, " %14s", irq_desc[i].chip->typename);
 		seq_printf(p, "  %s", action->name);
 
 		for (action=action->next; action; action = action->next)
diff --git a/arch/sh64/kernel/irq_intc.c b/arch/sh64/kernel/irq_intc.c
index fc99bf4e362..fa730f5fe2e 100644
--- a/arch/sh64/kernel/irq_intc.c
+++ b/arch/sh64/kernel/irq_intc.c
@@ -178,7 +178,7 @@ static void end_intc_irq(unsigned int irq)
 void make_intc_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
-	irq_desc[irq].handler = &intc_irq_type;
+	irq_desc[irq].chip = &intc_irq_type;
 	disable_intc_irq(irq);
 }
 
@@ -208,7 +208,7 @@ void __init init_IRQ(void)
 	/* Set default: per-line enable/disable, priority driven ack/eoi */
 	for (i = 0; i < NR_INTC_IRQS; i++) {
 		if (platform_int_priority[i] != NO_PRIORITY) {
-			irq_desc[i].handler = &intc_irq_type;
+			irq_desc[i].chip = &intc_irq_type;
 		}
 	}
 
diff --git a/arch/sh64/mach-cayman/irq.c b/arch/sh64/mach-cayman/irq.c
index f797c84bfdd..05eb7cdc26f 100644
--- a/arch/sh64/mach-cayman/irq.c
+++ b/arch/sh64/mach-cayman/irq.c
@@ -187,7 +187,7 @@ void init_cayman_irq(void)
 	}
 
 	for (i=0; i<NR_EXT_IRQS; i++) {
-		irq_desc[START_EXT_IRQS + i].handler = &cayman_irq_type;
+		irq_desc[START_EXT_IRQS + i].chip = &cayman_irq_type;
 	}
 
 	/* Setup the SMSC interrupt */
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index cc89b06d017..5d7c821ab7f 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -151,7 +151,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 #endif
-		seq_printf(p, " %9s", irq_desc[i].handler->typename);
+		seq_printf(p, " %9s", irq_desc[i].chip->typename);
 		seq_printf(p, "  %s", action->name);
 
 		for (action=action->next; action; action = action->next)
@@ -414,8 +414,8 @@ void irq_install_pre_handler(int virt_irq,
 	data->pre_handler_arg1 = arg1;
 	data->pre_handler_arg2 = arg2;
 
-	desc->handler = (desc->handler == &sun4u_irq ?
-			 &sun4u_irq_ack : &sun4v_irq_ack);
+	desc->chip = (desc->chip == &sun4u_irq ?
+		      &sun4u_irq_ack : &sun4v_irq_ack);
 }
 
 unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
@@ -431,7 +431,7 @@ unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
 	bucket = &ivector_table[ino];
 	if (!bucket->virt_irq) {
 		bucket->virt_irq = virt_irq_alloc(__irq(bucket));
-		irq_desc[bucket->virt_irq].handler = &sun4u_irq;
+		irq_desc[bucket->virt_irq].chip = &sun4u_irq;
 	}
 
 	desc = irq_desc + bucket->virt_irq;
@@ -465,7 +465,7 @@ unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino)
 	bucket = &ivector_table[sysino];
 	if (!bucket->virt_irq) {
 		bucket->virt_irq = virt_irq_alloc(__irq(bucket));
-		irq_desc[bucket->virt_irq].handler = &sun4v_irq;
+		irq_desc[bucket->virt_irq].chip = &sun4v_irq;
 	}
 
 	desc = irq_desc + bucket->virt_irq;
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 2ffda012385..fae43a3054a 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -63,7 +63,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 #endif
-		seq_printf(p, " %14s", irq_desc[i].handler->typename);
+		seq_printf(p, " %14s", irq_desc[i].chip->typename);
 		seq_printf(p, "  %s", action->name);
 
 		for (action=action->next; action; action = action->next)
@@ -451,13 +451,13 @@ void __init init_IRQ(void)
 	irq_desc[TIMER_IRQ].status = IRQ_DISABLED;
 	irq_desc[TIMER_IRQ].action = NULL;
 	irq_desc[TIMER_IRQ].depth = 1;
-	irq_desc[TIMER_IRQ].handler = &SIGVTALRM_irq_type;
+	irq_desc[TIMER_IRQ].chip = &SIGVTALRM_irq_type;
 	enable_irq(TIMER_IRQ);
 	for (i = 1; i < NR_IRQS; i++) {
 		irq_desc[i].status = IRQ_DISABLED;
 		irq_desc[i].action = NULL;
 		irq_desc[i].depth = 1;
-		irq_desc[i].handler = &normal_irq_type;
+		irq_desc[i].chip = &normal_irq_type;
 		enable_irq(i);
 	}
 }
diff --git a/arch/v850/kernel/irq.c b/arch/v850/kernel/irq.c
index 7a151c26f82..858c45819aa 100644
--- a/arch/v850/kernel/irq.c
+++ b/arch/v850/kernel/irq.c
@@ -65,10 +65,10 @@ int show_interrupts(struct seq_file *p, void *v)
 			int j;
 			int count = 0;
 			int num = -1;
-			const char *type_name = irq_desc[irq].handler->typename;
+			const char *type_name = irq_desc[irq].chip->typename;
 
 			for (j = 0; j < NR_IRQS; j++)
-				if (irq_desc[j].handler->typename == type_name){
+				if (irq_desc[j].chip->typename == type_name){
 					if (irq == j)
 						num = count;
 					count++;
@@ -117,7 +117,7 @@ init_irq_handlers (int base_irq, int num, int interval,
 		irq_desc[base_irq].status  = IRQ_DISABLED;
 		irq_desc[base_irq].action  = NULL;
 		irq_desc[base_irq].depth   = 1;
-		irq_desc[base_irq].handler = irq_type;
+		irq_desc[base_irq].chip = irq_type;
 		base_irq += interval;
 	}
 }
diff --git a/arch/x86_64/kernel/i8259.c b/arch/x86_64/kernel/i8259.c
index 86b2c1e197a..3dd1659427d 100644
--- a/arch/x86_64/kernel/i8259.c
+++ b/arch/x86_64/kernel/i8259.c
@@ -235,7 +235,7 @@ void make_8259A_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
 	io_apic_irqs &= ~(1<<irq);
-	irq_desc[irq].handler = &i8259A_irq_type;
+	irq_desc[irq].chip = &i8259A_irq_type;
 	enable_irq(irq);
 }
 
@@ -468,12 +468,12 @@ void __init init_ISA_irqs (void)
 			/*
 			 * 16 old-style INTA-cycle interrupts:
 			 */
-			irq_desc[i].handler = &i8259A_irq_type;
+			irq_desc[i].chip = &i8259A_irq_type;
 		} else {
 			/*
 			 * 'high' PCI IRQs filled in on demand
 			 */
-			irq_desc[i].handler = &no_irq_type;
+			irq_desc[i].chip = &no_irq_type;
 		}
 	}
 }
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index c768d8a036d..88a8736eb8c 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -876,15 +876,17 @@ static struct hw_interrupt_type ioapic_edge_type;
 #define IOAPIC_EDGE	0
 #define IOAPIC_LEVEL	1
 
-static inline void ioapic_register_intr(int irq, int vector, unsigned long trigger)
+static void ioapic_register_intr(int irq, int vector, unsigned long trigger)
 {
-	unsigned idx = use_pci_vector() && !platform_legacy_irq(irq) ? vector : irq;
+	unsigned idx;
+
+	idx = use_pci_vector() && !platform_legacy_irq(irq) ? vector : irq;
 
 	if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) ||
 			trigger == IOAPIC_LEVEL)
-		irq_desc[idx].handler = &ioapic_level_type;
+		irq_desc[idx].chip = &ioapic_level_type;
 	else
-		irq_desc[idx].handler = &ioapic_edge_type;
+		irq_desc[idx].chip = &ioapic_edge_type;
 	set_intr_gate(vector, interrupt[idx]);
 }
 
@@ -986,7 +988,7 @@ static void __init setup_ExtINT_IRQ0_pin(unsigned int apic, unsigned int pin, in
 	 * The timer IRQ doesn't have to know that behind the
 	 * scene we have a 8259A-master in AEOI mode ...
 	 */
-	irq_desc[0].handler = &ioapic_edge_type;
+	irq_desc[0].chip = &ioapic_edge_type;
 
 	/*
 	 * Add it to the IO-APIC irq-routing table:
@@ -1683,7 +1685,7 @@ static inline void init_IO_APIC_traps(void)
 				make_8259A_irq(irq);
 			else
 				/* Strange. Oh, well.. */
-				irq_desc[irq].handler = &no_irq_type;
+				irq_desc[irq].chip = &no_irq_type;
 		}
 	}
 }
@@ -1900,7 +1902,7 @@ static inline void check_timer(void)
 	apic_printk(APIC_VERBOSE, KERN_INFO "...trying to set up timer as Virtual Wire IRQ...");
 
 	disable_8259A_irq(0);
-	irq_desc[0].handler = &lapic_irq_type;
+	irq_desc[0].chip = &lapic_irq_type;
 	apic_write(APIC_LVT0, APIC_DM_FIXED | vector);	/* Fixed mode */
 	enable_8259A_irq(0);
 
diff --git a/arch/x86_64/kernel/irq.c b/arch/x86_64/kernel/irq.c
index bfa82f52a5c..0c2fb2c77bd 100644
--- a/arch/x86_64/kernel/irq.c
+++ b/arch/x86_64/kernel/irq.c
@@ -79,7 +79,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 #endif
-		seq_printf(p, " %14s", irq_desc[i].handler->typename);
+		seq_printf(p, " %14s", irq_desc[i].chip->typename);
 
 		seq_printf(p, "  %s", action->name);
 		for (action=action->next; action; action = action->next)
@@ -151,8 +151,8 @@ void fixup_irqs(cpumask_t map)
 			printk("Breaking affinity for irq %i\n", irq);
 			mask = map;
 		}
-		if (irq_desc[irq].handler->set_affinity)
-			irq_desc[irq].handler->set_affinity(irq, mask);
+		if (irq_desc[irq].chip->set_affinity)
+			irq_desc[irq].chip->set_affinity(irq, mask);
 		else if (irq_desc[irq].action && !(warned++))
 			printk("Cannot set affinity for irq %i\n", irq);
 	}
diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c
index 51f9bed455f..1cf744ee095 100644
--- a/arch/xtensa/kernel/irq.c
+++ b/arch/xtensa/kernel/irq.c
@@ -100,7 +100,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 #endif
-		seq_printf(p, " %14s", irq_desc[i].handler->typename);
+		seq_printf(p, " %14s", irq_desc[i].chip->typename);
 		seq_printf(p, "  %s", action->name);
 
 		for (action=action->next; action; action = action->next)
@@ -181,7 +181,7 @@ void __init init_IRQ(void)
 	int i;
 
 	for (i=0; i < XTENSA_NR_IRQS; i++)
-		irq_desc[i].handler = &xtensa_irq_type;
+		irq_desc[i].chip = &xtensa_irq_type;
 
 	cached_irq_mask = 0;
 
diff --git a/drivers/char/vr41xx_giu.c b/drivers/char/vr41xx_giu.c
index 05e6e814d86..073da48c092 100644
--- a/drivers/char/vr41xx_giu.c
+++ b/drivers/char/vr41xx_giu.c
@@ -689,9 +689,9 @@ static int __devinit giu_probe(struct platform_device *dev)
 
 	for (i = GIU_IRQ_BASE; i <= GIU_IRQ_LAST; i++) {
 		if (i < GIU_IRQ(GIUINT_HIGH_OFFSET))
-			irq_desc[i].handler = &giuint_low_irq_type;
+			irq_desc[i].chip = &giuint_low_irq_type;
 		else
-			irq_desc[i].handler = &giuint_high_irq_type;
+			irq_desc[i].chip = &giuint_high_irq_type;
 	}
 
 	return cascade_irq(GIUINT_IRQ, giu_get_irq);
diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
index 6e8ed0c81a6..ce0a6ebcff1 100644
--- a/drivers/parisc/dino.c
+++ b/drivers/parisc/dino.c
@@ -299,7 +299,7 @@ struct pci_port_ops dino_port_ops = {
 
 static void dino_disable_irq(unsigned int irq)
 {
-	struct dino_device *dino_dev = irq_desc[irq].handler_data;
+	struct dino_device *dino_dev = irq_desc[irq].chip_data;
 	int local_irq = gsc_find_local_irq(irq, dino_dev->global_irq, DINO_LOCAL_IRQS);
 
 	DBG(KERN_WARNING "%s(0x%p, %d)\n", __FUNCTION__, dino_dev, irq);
@@ -311,7 +311,7 @@ static void dino_disable_irq(unsigned int irq)
 
 static void dino_enable_irq(unsigned int irq)
 {
-	struct dino_device *dino_dev = irq_desc[irq].handler_data;
+	struct dino_device *dino_dev = irq_desc[irq].chip_data;
 	int local_irq = gsc_find_local_irq(irq, dino_dev->global_irq, DINO_LOCAL_IRQS);
 	u32 tmp;
 
diff --git a/drivers/parisc/eisa.c b/drivers/parisc/eisa.c
index 9d3bd15bf53..58f0ce8d78e 100644
--- a/drivers/parisc/eisa.c
+++ b/drivers/parisc/eisa.c
@@ -350,7 +350,7 @@ static int __devinit eisa_probe(struct parisc_device *dev)
 	irq_desc[2].action = &irq2_action;
 	
 	for (i = 0; i < 16; i++) {
-		irq_desc[i].handler = &eisa_interrupt_type;
+		irq_desc[i].chip = &eisa_interrupt_type;
 	}
 	
 	EISA_bus = 1;
diff --git a/drivers/parisc/gsc.c b/drivers/parisc/gsc.c
index 16d40f95978..5476ba7709b 100644
--- a/drivers/parisc/gsc.c
+++ b/drivers/parisc/gsc.c
@@ -109,7 +109,7 @@ int gsc_find_local_irq(unsigned int irq, int *global_irqs, int limit)
 
 static void gsc_asic_disable_irq(unsigned int irq)
 {
-	struct gsc_asic *irq_dev = irq_desc[irq].handler_data;
+	struct gsc_asic *irq_dev = irq_desc[irq].chip_data;
 	int local_irq = gsc_find_local_irq(irq, irq_dev->global_irq, 32);
 	u32 imr;
 
@@ -124,7 +124,7 @@ static void gsc_asic_disable_irq(unsigned int irq)
 
 static void gsc_asic_enable_irq(unsigned int irq)
 {
-	struct gsc_asic *irq_dev = irq_desc[irq].handler_data;
+	struct gsc_asic *irq_dev = irq_desc[irq].chip_data;
 	int local_irq = gsc_find_local_irq(irq, irq_dev->global_irq, 32);
 	u32 imr;
 
@@ -164,8 +164,8 @@ int gsc_assign_irq(struct hw_interrupt_type *type, void *data)
 	if (irq > GSC_IRQ_MAX)
 		return NO_IRQ;
 
-	irq_desc[irq].handler = type;
-	irq_desc[irq].handler_data = data;
+	irq_desc[irq].chip = type;
+	irq_desc[irq].chip_data = data;
 	return irq++;
 }
 
diff --git a/drivers/parisc/iosapic.c b/drivers/parisc/iosapic.c
index 7a458d5bc75..1fbda77cefc 100644
--- a/drivers/parisc/iosapic.c
+++ b/drivers/parisc/iosapic.c
@@ -619,7 +619,7 @@ iosapic_set_irt_data( struct vector_info *vi, u32 *dp0, u32 *dp1)
 
 static struct vector_info *iosapic_get_vector(unsigned int irq)
 {
-	return irq_desc[irq].handler_data;
+	return irq_desc[irq].chip_data;
 }
 
 static void iosapic_disable_irq(unsigned int irq)
diff --git a/drivers/parisc/superio.c b/drivers/parisc/superio.c
index 828eb45062d..a988dc7a9ab 100644
--- a/drivers/parisc/superio.c
+++ b/drivers/parisc/superio.c
@@ -360,7 +360,7 @@ int superio_fixup_irq(struct pci_dev *pcidev)
 #endif
 
 	for (i = 0; i < 16; i++) {
-		irq_desc[i].handler = &superio_interrupt_type;
+		irq_desc[i].chip = &superio_interrupt_type;
 	}
 
 	/*
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 7f8429284fa..76d023d8a33 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -429,12 +429,12 @@ static void irq_handler_init(int cap_id, int pos, int mask)
 
 	spin_lock_irqsave(&irq_desc[pos].lock, flags);
 	if (cap_id == PCI_CAP_ID_MSIX)
-		irq_desc[pos].handler = &msix_irq_type;
+		irq_desc[pos].chip = &msix_irq_type;
 	else {
 		if (!mask)
-			irq_desc[pos].handler = &msi_irq_wo_maskbit_type;
+			irq_desc[pos].chip = &msi_irq_wo_maskbit_type;
 		else
-			irq_desc[pos].handler = &msi_irq_w_maskbit_type;
+			irq_desc[pos].chip = &msi_irq_w_maskbit_type;
 	}
 	spin_unlock_irqrestore(&irq_desc[pos].lock, flags);
 }
diff --git a/drivers/pcmcia/hd64465_ss.c b/drivers/pcmcia/hd64465_ss.c
index b39435bbfae..c662e4f89d4 100644
--- a/drivers/pcmcia/hd64465_ss.c
+++ b/drivers/pcmcia/hd64465_ss.c
@@ -244,8 +244,8 @@ static void hs_map_irq(hs_socket_t *sp, unsigned int irq)
 
     	hs_mapped_irq[irq].sock = sp;
 	/* insert ourselves as the irq controller */
-	hs_mapped_irq[irq].old_handler = irq_desc[irq].handler;
-	irq_desc[irq].handler = &hd64465_ss_irq_type;
+	hs_mapped_irq[irq].old_handler = irq_desc[irq].chip;
+	irq_desc[irq].chip = &hd64465_ss_irq_type;
 }
 
 
@@ -260,7 +260,7 @@ static void hs_unmap_irq(hs_socket_t *sp, unsigned int irq)
 	    return;
 		
 	/* restore the original irq controller */
-	irq_desc[irq].handler = hs_mapped_irq[irq].old_handler;
+	irq_desc[irq].chip = hs_mapped_irq[irq].old_handler;
 }
 
 /*============================================================*/
diff --git a/include/asm-powerpc/hw_irq.h b/include/asm-powerpc/hw_irq.h
index ce0f7db63c1..a27ed3feb31 100644
--- a/include/asm-powerpc/hw_irq.h
+++ b/include/asm-powerpc/hw_irq.h
@@ -86,20 +86,20 @@ static inline void local_irq_save_ptr(unsigned long *flags)
 #define mask_irq(irq)						\
 	({							\
 	 	irq_desc_t *desc = get_irq_desc(irq);		\
-		if (desc->handler && desc->handler->disable)	\
-			desc->handler->disable(irq);		\
+		if (desc->chip && desc->chip->disable)	\
+			desc->chip->disable(irq);		\
 	})
 #define unmask_irq(irq)						\
 	({							\
 	 	irq_desc_t *desc = get_irq_desc(irq);		\
-		if (desc->handler && desc->handler->enable)	\
-			desc->handler->enable(irq);		\
+		if (desc->chip && desc->chip->enable)	\
+			desc->chip->enable(irq);		\
 	})
 #define ack_irq(irq)						\
 	({							\
 	 	irq_desc_t *desc = get_irq_desc(irq);		\
-		if (desc->handler && desc->handler->ack)	\
-			desc->handler->ack(irq);		\
+		if (desc->chip && desc->chip->ack)	\
+			desc->chip->ack(irq);		\
 	})
 
 /* Should we handle this via lost interrupts and IPIs or should we don't care like
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 676e00dfb21..9597a690423 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -69,8 +69,8 @@ typedef struct hw_interrupt_type  hw_irq_controller;
  * Pad this out to 32 bytes for cache and indexing reasons.
  */
 typedef struct irq_desc {
-	hw_irq_controller *handler;
-	void *handler_data;
+	hw_irq_controller *chip;
+	void *chip_data;
 	struct irqaction *action;	/* IRQ action list */
 	unsigned int status;		/* IRQ status */
 	unsigned int depth;		/* nested irq disables */
diff --git a/kernel/irq/autoprobe.c b/kernel/irq/autoprobe.c
index 3467097ca61..6f1e68a46cb 100644
--- a/kernel/irq/autoprobe.c
+++ b/kernel/irq/autoprobe.c
@@ -41,7 +41,7 @@ unsigned long probe_irq_on(void)
 
 		spin_lock_irq(&desc->lock);
 		if (!irq_desc[i].action)
-			irq_desc[i].handler->startup(i);
+			irq_desc[i].chip->startup(i);
 		spin_unlock_irq(&desc->lock);
 	}
 
@@ -59,7 +59,7 @@ unsigned long probe_irq_on(void)
 		spin_lock_irq(&desc->lock);
 		if (!desc->action) {
 			desc->status |= IRQ_AUTODETECT | IRQ_WAITING;
-			if (desc->handler->startup(i))
+			if (desc->chip->startup(i))
 				desc->status |= IRQ_PENDING;
 		}
 		spin_unlock_irq(&desc->lock);
@@ -85,7 +85,7 @@ unsigned long probe_irq_on(void)
 			/* It triggered already - consider it spurious. */
 			if (!(status & IRQ_WAITING)) {
 				desc->status = status & ~IRQ_AUTODETECT;
-				desc->handler->shutdown(i);
+				desc->chip->shutdown(i);
 			} else
 				if (i < 32)
 					val |= 1 << i;
@@ -128,7 +128,7 @@ unsigned int probe_irq_mask(unsigned long val)
 				mask |= 1 << i;
 
 			desc->status = status & ~IRQ_AUTODETECT;
-			desc->handler->shutdown(i);
+			desc->chip->shutdown(i);
 		}
 		spin_unlock_irq(&desc->lock);
 	}
@@ -173,7 +173,7 @@ int probe_irq_off(unsigned long val)
 				nr_irqs++;
 			}
 			desc->status = status & ~IRQ_AUTODETECT;
-			desc->handler->shutdown(i);
+			desc->chip->shutdown(i);
 		}
 		spin_unlock_irq(&desc->lock);
 	}
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 0f653011710..f9d95705a4a 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -31,7 +31,7 @@
 irq_desc_t irq_desc[NR_IRQS] __cacheline_aligned = {
 	[0 ... NR_IRQS-1] = {
 		.status = IRQ_DISABLED,
-		.handler = &no_irq_type,
+		.chip = &no_irq_type,
 		.lock = SPIN_LOCK_UNLOCKED
 	}
 };
@@ -118,16 +118,16 @@ fastcall unsigned int __do_IRQ(unsigned int irq, struct pt_regs *regs)
 		/*
 		 * No locking required for CPU-local interrupts:
 		 */
-		if (desc->handler->ack)
-			desc->handler->ack(irq);
+		if (desc->chip->ack)
+			desc->chip->ack(irq);
 		action_ret = handle_IRQ_event(irq, regs, desc->action);
-		desc->handler->end(irq);
+		desc->chip->end(irq);
 		return 1;
 	}
 
 	spin_lock(&desc->lock);
-	if (desc->handler->ack)
-		desc->handler->ack(irq);
+	if (desc->chip->ack)
+		desc->chip->ack(irq);
 	/*
 	 * REPLAY is when Linux resends an IRQ that was dropped earlier
 	 * WAITING is used by probe to mark irqs that are being tested
@@ -187,7 +187,7 @@ out:
 	 * The ->end() handler has to deal with interrupts which got
 	 * disabled while the handler was running.
 	 */
-	desc->handler->end(irq);
+	desc->chip->end(irq);
 	spin_unlock(&desc->lock);
 
 	return 1;
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 1279e349953..31ee1f3bfcf 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -69,7 +69,7 @@ void disable_irq_nosync(unsigned int irq)
 	spin_lock_irqsave(&desc->lock, flags);
 	if (!desc->depth++) {
 		desc->status |= IRQ_DISABLED;
-		desc->handler->disable(irq);
+		desc->chip->disable(irq);
 	}
 	spin_unlock_irqrestore(&desc->lock, flags);
 }
@@ -131,9 +131,9 @@ void enable_irq(unsigned int irq)
 		desc->status = status;
 		if ((status & (IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) {
 			desc->status = status | IRQ_REPLAY;
-			hw_resend_irq(desc->handler,irq);
+			hw_resend_irq(desc->chip,irq);
 		}
-		desc->handler->enable(irq);
+		desc->chip->enable(irq);
 		/* fall-through */
 	}
 	default:
@@ -178,7 +178,7 @@ int setup_irq(unsigned int irq, struct irqaction * new)
 	if (irq >= NR_IRQS)
 		return -EINVAL;
 
-	if (desc->handler == &no_irq_type)
+	if (desc->chip == &no_irq_type)
 		return -ENOSYS;
 	/*
 	 * Some drivers like serial.c use request_irq() heavily,
@@ -230,10 +230,10 @@ int setup_irq(unsigned int irq, struct irqaction * new)
 		desc->depth = 0;
 		desc->status &= ~(IRQ_DISABLED | IRQ_AUTODETECT |
 				  IRQ_WAITING | IRQ_INPROGRESS);
-		if (desc->handler->startup)
-			desc->handler->startup(irq);
+		if (desc->chip->startup)
+			desc->chip->startup(irq);
 		else
-			desc->handler->enable(irq);
+			desc->chip->enable(irq);
 	}
 	spin_unlock_irqrestore(&desc->lock,flags);
 
@@ -295,16 +295,16 @@ void free_irq(unsigned int irq, void *dev_id)
 
 			/* Currently used only by UML, might disappear one day.*/
 #ifdef CONFIG_IRQ_RELEASE_METHOD
-			if (desc->handler->release)
-				desc->handler->release(irq, dev_id);
+			if (desc->chip->release)
+				desc->chip->release(irq, dev_id);
 #endif
 
 			if (!desc->action) {
 				desc->status |= IRQ_DISABLED;
-				if (desc->handler->shutdown)
-					desc->handler->shutdown(irq);
+				if (desc->chip->shutdown)
+					desc->chip->shutdown(irq);
 				else
-					desc->handler->disable(irq);
+					desc->chip->disable(irq);
 			}
 			spin_unlock_irqrestore(&desc->lock,flags);
 			unregister_handler_proc(irq, action);
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index a12d00eb5e7..d978c87bca9 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -33,7 +33,7 @@ void move_native_irq(int irq)
 	if (unlikely(cpus_empty(pending_irq_cpumask[irq])))
 		return;
 
-	if (!desc->handler->set_affinity)
+	if (!desc->chip->set_affinity)
 		return;
 
 	assert_spin_locked(&desc->lock);
@@ -51,12 +51,12 @@ void move_native_irq(int irq)
 	 */
 	if (likely(!cpus_empty(tmp))) {
 		if (likely(!(desc->status & IRQ_DISABLED)))
-			desc->handler->disable(irq);
+			desc->chip->disable(irq);
 
-		desc->handler->set_affinity(irq,tmp);
+		desc->chip->set_affinity(irq,tmp);
 
 		if (likely(!(desc->status & IRQ_DISABLED)))
-			desc->handler->enable(irq);
+			desc->chip->enable(irq);
 	}
 	cpus_clear(pending_irq_cpumask[irq]);
 }
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index afacd6f585f..90fe05f23e6 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -37,7 +37,7 @@ void proc_set_irq_affinity(unsigned int irq, cpumask_t mask_val)
 {
 	set_balance_irq_affinity(irq, mask_val);
 	irq_affinity[irq] = mask_val;
-	irq_desc[irq].handler->set_affinity(irq, mask_val);
+	irq_desc[irq].chip->set_affinity(irq, mask_val);
 }
 #endif
 
@@ -59,7 +59,7 @@ static int irq_affinity_write_proc(struct file *file, const char __user *buffer,
 	unsigned int irq = (int)(long)data, full_count = count, err;
 	cpumask_t new_value, tmp;
 
-	if (!irq_desc[irq].handler->set_affinity || no_irq_affinity)
+	if (!irq_desc[irq].chip->set_affinity || no_irq_affinity)
 		return -EIO;
 
 	err = cpumask_parse(buffer, count, new_value);
@@ -122,7 +122,7 @@ void register_irq_proc(unsigned int irq)
 	char name [MAX_NAMELEN];
 
 	if (!root_irq_dir ||
-		(irq_desc[irq].handler == &no_irq_type) ||
+		(irq_desc[irq].chip == &no_irq_type) ||
 			irq_dir[irq])
 		return;
 
diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
index b2fb3c18d06..ea3ceed362d 100644
--- a/kernel/irq/spurious.c
+++ b/kernel/irq/spurious.c
@@ -81,7 +81,7 @@ static int misrouted_irq(int irq, struct pt_regs *regs)
 		 * IRQ controller clean up too
 		 */
 		if(work)
-			desc->handler->end(i);
+			desc->chip->end(i);
 		spin_unlock(&desc->lock);
 	}
 	/* So the caller can adjust the irq error counts */
@@ -166,7 +166,7 @@ void note_interrupt(unsigned int irq, irq_desc_t *desc, irqreturn_t action_ret,
 		 */
 		printk(KERN_EMERG "Disabling IRQ #%d\n", irq);
 		desc->status |= IRQ_DISABLED;
-		desc->handler->disable(irq);
+		desc->chip->disable(irq);
 	}
 	desc->irqs_unhandled = 0;
 }
-- 
cgit v1.2.3-70-g09d2


From a53da52fd743fd637637572838c0a7af23a2d038 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 29 Jun 2006 02:24:38 -0700
Subject: [PATCH] genirq: cleanup: merge irq_affinity[] into irq_desc[]

Consolidation: remove the irq_affinity[NR_IRQS] array and move it into the
irq_desc[NR_IRQS].affinity field.

[akpm@osdl.org: sparc64 build fix]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/alpha/kernel/irq.c               | 2 +-
 arch/i386/kernel/irq.c                | 2 +-
 arch/ia64/kernel/irq.c                | 4 ++--
 arch/parisc/kernel/irq.c              | 8 ++++----
 arch/powerpc/kernel/irq.c             | 2 +-
 arch/powerpc/platforms/pseries/xics.c | 4 ++--
 arch/powerpc/sysdev/mpic.c            | 2 +-
 arch/ppc/syslib/open_pic.c            | 4 ++--
 arch/sparc64/kernel/irq.c             | 2 +-
 arch/x86_64/kernel/irq.c              | 2 +-
 include/linux/irq.h                   | 7 ++++---
 kernel/irq/handle.c                   | 5 ++++-
 kernel/irq/manage.c                   | 2 --
 kernel/irq/proc.c                     | 4 ++--
 14 files changed, 26 insertions(+), 24 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index ec9d243d42c..63af36cf7f6 100644
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -56,7 +56,7 @@ select_smp_affinity(unsigned int irq)
 		cpu = (cpu < (NR_CPUS-1) ? cpu + 1 : 0);
 	last_cpu = cpu;
 
-	irq_affinity[irq] = cpumask_of_cpu(cpu);
+	irq_desc[irq].affinity = cpumask_of_cpu(cpu);
 	irq_desc[irq].chip->set_affinity(irq, cpumask_of_cpu(cpu));
 	return 0;
 }
diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
index b942a5918da..3336cef9605 100644
--- a/arch/i386/kernel/irq.c
+++ b/arch/i386/kernel/irq.c
@@ -291,7 +291,7 @@ void fixup_irqs(cpumask_t map)
 		if (irq == 2)
 			continue;
 
-		cpus_and(mask, irq_affinity[irq], map);
+		cpus_and(mask, irq_desc[irq].affinity, map);
 		if (any_online_cpu(mask) == NR_CPUS) {
 			printk("Breaking affinity for irq %i\n", irq);
 			mask = map;
diff --git a/arch/ia64/kernel/irq.c b/arch/ia64/kernel/irq.c
index 2645153dba8..c4e1b3b60b4 100644
--- a/arch/ia64/kernel/irq.c
+++ b/arch/ia64/kernel/irq.c
@@ -100,7 +100,7 @@ void set_irq_affinity_info (unsigned int irq, int hwid, int redir)
 	cpu_set(cpu_logical_id(hwid), mask);
 
 	if (irq < NR_IRQS) {
-		irq_affinity[irq] = mask;
+		irq_desc[irq].affinity = mask;
 		irq_redir[irq] = (char) (redir & 0xff);
 	}
 }
@@ -131,7 +131,7 @@ static void migrate_irqs(void)
 		if (desc->status == IRQ_PER_CPU)
 			continue;
 
-		cpus_and(mask, irq_affinity[irq], cpu_online_map);
+		cpus_and(mask, irq_desc[irq].affinity, cpu_online_map);
 		if (any_online_cpu(mask) == NR_CPUS) {
 			/*
 			 * Save it for phase 2 processing
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index 26e69f73fdb..ea6a55e1a0c 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -94,7 +94,7 @@ int cpu_check_affinity(unsigned int irq, cpumask_t *dest)
 	if (irq == TIMER_IRQ || irq == IPI_IRQ) {
 		/* Bad linux design decision.  The mask has already
 		 * been set; we must reset it */
-		irq_affinity[irq] = CPU_MASK_ALL;
+		irq_desc[irq].affinity = CPU_MASK_ALL;
 		return -EINVAL;
 	}
 
@@ -110,7 +110,7 @@ static void cpu_set_affinity_irq(unsigned int irq, cpumask_t dest)
 	if (cpu_check_affinity(irq, &dest))
 		return;
 
-	irq_affinity[irq] = dest;
+	irq_desc[irq].affinity = dest;
 }
 #endif
 
@@ -265,7 +265,7 @@ int txn_alloc_irq(unsigned int bits_wide)
 unsigned long txn_affinity_addr(unsigned int irq, int cpu)
 {
 #ifdef CONFIG_SMP
-	irq_affinity[irq] = cpumask_of_cpu(cpu);
+	irq_desc[irq].affinity = cpumask_of_cpu(cpu);
 #endif
 
 	return cpu_data[cpu].txn_addr;
@@ -326,7 +326,7 @@ void do_cpu_irq_mask(struct pt_regs *regs)
 		/* Work our way from MSb to LSb...same order we alloc EIRs */
 		for (irq = TIMER_IRQ; eirr_val && bit; bit>>=1, irq++) {
 #ifdef CONFIG_SMP
-			cpumask_t dest = irq_affinity[irq];
+			cpumask_t dest = irq_desc[irq].affinity;
 #endif
 			if (!(bit & eirr_val))
 				continue;
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 8cfc779d882..24f6050aa4a 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -164,7 +164,7 @@ void fixup_irqs(cpumask_t map)
 		if (irq_desc[irq].status & IRQ_PER_CPU)
 			continue;
 
-		cpus_and(mask, irq_affinity[irq], map);
+		cpus_and(mask, irq_desc[irq].affinity, map);
 		if (any_online_cpu(mask) == NR_CPUS) {
 			printk("Breaking affinity for irq %i\n", irq);
 			mask = map;
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index bdc9e26a93c..19c03dd4300 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -238,7 +238,7 @@ static int get_irq_server(unsigned int irq)
 {
 	unsigned int server;
 	/* For the moment only implement delivery to all cpus or one cpu */
-	cpumask_t cpumask = irq_affinity[irq];
+	cpumask_t cpumask = irq_desc[irq].affinity;
 	cpumask_t tmp = CPU_MASK_NONE;
 
 	if (!distribute_irqs)
@@ -729,7 +729,7 @@ void xics_migrate_irqs_away(void)
 
 		/* Reset affinity to all cpus */
 		desc->chip->set_affinity(virq, CPU_MASK_ALL);
-		irq_affinity[virq] = CPU_MASK_ALL;
+		irq_desc[irq].affinity = CPU_MASK_ALL;
 unlock:
 		spin_unlock_irqrestore(&desc->lock, flags);
 	}
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index f4613ee6b7a..28df9c827ca 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -906,7 +906,7 @@ void mpic_setup_this_cpu(void)
  	/* let the mpic know we want intrs. default affinity is 0xffffffff
 	 * until changed via /proc. That's how it's done on x86. If we want
 	 * it differently, then we should make sure we also change the default
-	 * values of irq_affinity in irq.c.
+	 * values of irq_desc[].affinity in irq.c.
  	 */
 	if (distribute_irqs) {
 	 	for (i = 0; i < mpic->num_sources ; i++)
diff --git a/arch/ppc/syslib/open_pic.c b/arch/ppc/syslib/open_pic.c
index 822058c2983..767a0bc9581 100644
--- a/arch/ppc/syslib/open_pic.c
+++ b/arch/ppc/syslib/open_pic.c
@@ -615,8 +615,8 @@ void __devinit do_openpic_setup_cpu(void)
  	/* let the openpic know we want intrs. default affinity
  	 * is 0xffffffff until changed via /proc
  	 * That's how it's done on x86. If we want it differently, then
- 	 * we should make sure we also change the default values of irq_affinity
- 	 * in irq.c.
+ 	 * we should make sure we also change the default values of
+	 * irq_desc[].affinity in irq.c.
  	 */
  	for (i = 0; i < NumSources; i++)
 		openpic_mapirq(i, msk, CPU_MASK_ALL);
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index 5d7c821ab7f..ab9e640df22 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -224,7 +224,7 @@ static inline struct ino_bucket *virt_irq_to_bucket(unsigned int virt_irq)
 #ifdef CONFIG_SMP
 static int irq_choose_cpu(unsigned int virt_irq)
 {
-	cpumask_t mask = irq_affinity[virt_irq];
+	cpumask_t mask = irq_desc[virt_irq].affinity;
 	int cpuid;
 
 	if (cpus_equal(mask, CPU_MASK_ALL)) {
diff --git a/arch/x86_64/kernel/irq.c b/arch/x86_64/kernel/irq.c
index 0c2fb2c77bd..a1f1df5f7bf 100644
--- a/arch/x86_64/kernel/irq.c
+++ b/arch/x86_64/kernel/irq.c
@@ -146,7 +146,7 @@ void fixup_irqs(cpumask_t map)
 		if (irq == 2)
 			continue;
 
-		cpus_and(mask, irq_affinity[irq], map);
+		cpus_and(mask, irq_desc[irq].affinity, map);
 		if (any_online_cpu(mask) == NR_CPUS) {
 			printk("Breaking affinity for irq %i\n", irq);
 			mask = map;
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 9597a690423..6e3ad6245bd 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -77,6 +77,9 @@ typedef struct irq_desc {
 	unsigned int irq_count;		/* For detecting broken interrupts */
 	unsigned int irqs_unhandled;
 	spinlock_t lock;
+#ifdef CONFIG_SMP
+	cpumask_t affinity;
+#endif
 #if defined (CONFIG_GENERIC_PENDING_IRQ) || defined (CONFIG_IRQBALANCE)
 	unsigned int move_irq;		/* Flag need to re-target intr dest*/
 #endif
@@ -96,12 +99,10 @@ irq_descp (int irq)
 extern int setup_irq(unsigned int irq, struct irqaction * new);
 
 #ifdef CONFIG_GENERIC_HARDIRQS
-extern cpumask_t irq_affinity[NR_IRQS];
-
 #ifdef CONFIG_SMP
 static inline void set_native_irq_info(int irq, cpumask_t mask)
 {
-	irq_affinity[irq] = mask;
+	irq_desc[irq].affinity = mask;
 }
 #else
 static inline void set_native_irq_info(int irq, cpumask_t mask)
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index f9d95705a4a..cc786aaf30d 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -32,7 +32,10 @@ irq_desc_t irq_desc[NR_IRQS] __cacheline_aligned = {
 	[0 ... NR_IRQS-1] = {
 		.status = IRQ_DISABLED,
 		.chip = &no_irq_type,
-		.lock = SPIN_LOCK_UNLOCKED
+		.lock = SPIN_LOCK_UNLOCKED,
+#ifdef CONFIG_SMP
+		.affinity = CPU_MASK_ALL
+#endif
 	}
 };
 
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 31ee1f3bfcf..c53662edc73 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -16,8 +16,6 @@
 
 #ifdef CONFIG_SMP
 
-cpumask_t irq_affinity[NR_IRQS] = { [0 ... NR_IRQS-1] = CPU_MASK_ALL };
-
 #if defined (CONFIG_GENERIC_PENDING_IRQ) || defined (CONFIG_IRQBALANCE)
 cpumask_t __cacheline_aligned pending_irq_cpumask[NR_IRQS];
 #endif
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 90fe05f23e6..847b98a611e 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -36,7 +36,7 @@ void proc_set_irq_affinity(unsigned int irq, cpumask_t mask_val)
 void proc_set_irq_affinity(unsigned int irq, cpumask_t mask_val)
 {
 	set_balance_irq_affinity(irq, mask_val);
-	irq_affinity[irq] = mask_val;
+	irq_desc[irq].affinity = mask_val;
 	irq_desc[irq].chip->set_affinity(irq, mask_val);
 }
 #endif
@@ -44,7 +44,7 @@ void proc_set_irq_affinity(unsigned int irq, cpumask_t mask_val)
 static int irq_affinity_read_proc(char *page, char **start, off_t off,
 				  int count, int *eof, void *data)
 {
-	int len = cpumask_scnprintf(page, count, irq_affinity[(long)data]);
+	int len = cpumask_scnprintf(page, count, irq_desc[(long)data].affinity);
 
 	if (count - len < 2)
 		return -EINVAL;
-- 
cgit v1.2.3-70-g09d2


From cd916d31cc31273eca8a620fae02b7bf7f577559 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 29 Jun 2006 02:24:42 -0700
Subject: [PATCH] genirq: cleanup: merge pending_irq_cpumask[] into irq_desc[]

Consolidation: remove the pending_irq_cpumask[NR_IRQS] array and move it into
the irq_desc[NR_IRQS].pending_mask field.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/io_apic.c | 2 +-
 include/linux/irq.h        | 2 +-
 kernel/irq/manage.c        | 4 ----
 kernel/irq/migration.c     | 8 ++++----
 4 files changed, 6 insertions(+), 10 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 4a74b696c6a..afe54f257cb 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -581,7 +581,7 @@ static int balanced_irq(void *unused)
 	
 	/* push everything to CPU 0 to give us a starting point.  */
 	for (i = 0 ; i < NR_IRQS ; i++) {
-		pending_irq_cpumask[i] = cpumask_of_cpu(0);
+		irq_desc[i].pending_mask = cpumask_of_cpu(0);
 		set_pending_irq(i, cpumask_of_cpu(0));
 	}
 
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 1022c5d4254..81f3d976bb3 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -83,6 +83,7 @@ struct irq_desc {
 	cpumask_t		affinity;
 #endif
 #if defined(CONFIG_GENERIC_PENDING_IRQ) || defined(CONFIG_IRQBALANCE)
+	cpumask_t		pending_mask;
 	unsigned int		move_irq;	/* need to re-target IRQ dest */
 #endif
 #ifdef CONFIG_PROC_FS
@@ -120,7 +121,6 @@ static inline void set_native_irq_info(int irq, cpumask_t mask)
 #ifdef CONFIG_SMP
 
 #if defined(CONFIG_GENERIC_PENDING_IRQ) || defined(CONFIG_IRQBALANCE)
-extern cpumask_t pending_irq_cpumask[NR_IRQS];
 
 void set_pending_irq(unsigned int irq, cpumask_t mask);
 void move_native_irq(int irq);
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 6a6f1d3dd39..ca9b5d36abe 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -16,10 +16,6 @@
 
 #ifdef CONFIG_SMP
 
-#if defined (CONFIG_GENERIC_PENDING_IRQ) || defined (CONFIG_IRQBALANCE)
-cpumask_t __cacheline_aligned pending_irq_cpumask[NR_IRQS];
-#endif
-
 /**
  *	synchronize_irq - wait for pending IRQ handlers (on other CPUs)
  *	@irq: interrupt number to wait for
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index a571c3abb79..a57ebe9fa6f 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -8,7 +8,7 @@ void set_pending_irq(unsigned int irq, cpumask_t mask)
 
 	spin_lock_irqsave(&desc->lock, flags);
 	desc->move_irq = 1;
-	pending_irq_cpumask[irq] = mask;
+	irq_desc[irq].pending_mask = mask;
 	spin_unlock_irqrestore(&desc->lock, flags);
 }
 
@@ -30,7 +30,7 @@ void move_native_irq(int irq)
 
 	desc->move_irq = 0;
 
-	if (unlikely(cpus_empty(pending_irq_cpumask[irq])))
+	if (unlikely(cpus_empty(irq_desc[irq].pending_mask)))
 		return;
 
 	if (!desc->chip->set_affinity)
@@ -38,7 +38,7 @@ void move_native_irq(int irq)
 
 	assert_spin_locked(&desc->lock);
 
-	cpus_and(tmp, pending_irq_cpumask[irq], cpu_online_map);
+	cpus_and(tmp, irq_desc[irq].pending_mask, cpu_online_map);
 
 	/*
 	 * If there was a valid mask to work with, please
@@ -58,5 +58,5 @@ void move_native_irq(int irq)
 		if (likely(!(desc->status & IRQ_DISABLED)))
 			desc->chip->enable(irq);
 	}
-	cpus_clear(pending_irq_cpumask[irq]);
+	cpus_clear(irq_desc[irq].pending_mask);
 }
-- 
cgit v1.2.3-70-g09d2


From c0ad90a32fb60f4129d0e24dfd5fd7128e2e09f2 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 29 Jun 2006 02:24:44 -0700
Subject: [PATCH] genirq: add ->retrigger() irq op to consolidate
 hw_irq_resend()

Add ->retrigger() irq op to consolidate hw_irq_resend() implementations.
(Most architectures had it defined to NOP anyway.)

NOTE: ia64 needs testing. i386 and x86_64 tested.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/io_apic.c    |  9 +++++++++
 arch/ia64/kernel/irq_lsapic.c | 10 +++++++++-
 arch/ia64/kernel/perfmon.c    |  4 ++--
 arch/parisc/kernel/irq.c      | 11 ++++-------
 arch/x86_64/kernel/io_apic.c  |  9 +++++++++
 include/asm-alpha/hw_irq.h    |  2 --
 include/asm-cris/hw_irq.h     |  2 --
 include/asm-i386/hw_irq.h     | 10 ----------
 include/asm-ia64/hw_irq.h     |  3 +--
 include/asm-m32r/hw_irq.h     |  5 -----
 include/asm-mips/hw_irq.h     |  8 ++++----
 include/asm-parisc/hw_irq.h   |  9 ---------
 include/asm-powerpc/hw_irq.h  |  6 +++---
 include/asm-sh/hw_irq.h       |  5 -----
 include/asm-sh64/hw_irq.h     |  1 -
 include/asm-um/hw_irq.h       |  3 ---
 include/asm-v850/hw_irq.h     |  4 ----
 include/asm-x86_64/hw_irq.h   |  9 ---------
 include/asm-xtensa/hw_irq.h   |  4 ----
 include/linux/irq.h           |  2 ++
 kernel/irq/manage.c           |  3 ++-
 21 files changed, 45 insertions(+), 74 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index afe54f257cb..ec9ea0269d3 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -2071,6 +2071,13 @@ static void set_ioapic_affinity_vector (unsigned int vector,
 #endif
 #endif
 
+static int ioapic_retrigger(unsigned int irq)
+{
+	send_IPI_self(IO_APIC_VECTOR(irq));
+
+	return 1;
+}
+
 /*
  * Level and edge triggered IO-APIC interrupts need different handling,
  * so we use two separate IRQ descriptors. Edge triggered IRQs can be
@@ -2090,6 +2097,7 @@ static struct hw_interrupt_type ioapic_edge_type __read_mostly = {
 #ifdef CONFIG_SMP
 	.set_affinity 	= set_ioapic_affinity,
 #endif
+	.retrigger	= ioapic_retrigger,
 };
 
 static struct hw_interrupt_type ioapic_level_type __read_mostly = {
@@ -2103,6 +2111,7 @@ static struct hw_interrupt_type ioapic_level_type __read_mostly = {
 #ifdef CONFIG_SMP
 	.set_affinity 	= set_ioapic_affinity,
 #endif
+	.retrigger	= ioapic_retrigger,
 };
 
 static inline void init_IO_APIC_traps(void)
diff --git a/arch/ia64/kernel/irq_lsapic.c b/arch/ia64/kernel/irq_lsapic.c
index ea14e6a0440..1ab58b09f3d 100644
--- a/arch/ia64/kernel/irq_lsapic.c
+++ b/arch/ia64/kernel/irq_lsapic.c
@@ -26,6 +26,13 @@ lsapic_noop (unsigned int irq)
 	/* nuthing to do... */
 }
 
+static int lsapic_retrigger(unsigned int irq)
+{
+	ia64_resend_irq(irq);
+
+	return 1;
+}
+
 struct hw_interrupt_type irq_type_ia64_lsapic = {
 	.typename =	"LSAPIC",
 	.startup =	lsapic_noop_startup,
@@ -33,5 +40,6 @@ struct hw_interrupt_type irq_type_ia64_lsapic = {
 	.enable =	lsapic_noop,
 	.disable =	lsapic_noop,
 	.ack =		lsapic_noop,
-	.end =		lsapic_noop
+	.end =		lsapic_noop,
+	.retrigger =	lsapic_retrigger,
 };
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 6d7bc8ff7b3..a0055d3d695 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -6165,7 +6165,7 @@ pfm_load_regs (struct task_struct *task)
 		/*
 		 * will replay the PMU interrupt
 		 */
-		if (need_irq_resend) hw_resend_irq(NULL, IA64_PERFMON_VECTOR);
+		if (need_irq_resend) ia64_resend_irq(IA64_PERFMON_VECTOR);
 
 		pfm_stats[smp_processor_id()].pfm_replay_ovfl_intr_count++;
 	}
@@ -6305,7 +6305,7 @@ pfm_load_regs (struct task_struct *task)
 		/*
 		 * will replay the PMU interrupt
 		 */
-		if (need_irq_resend) hw_resend_irq(NULL, IA64_PERFMON_VECTOR);
+		if (need_irq_resend) ia64_resend_irq(IA64_PERFMON_VECTOR);
 
 		pfm_stats[smp_processor_id()].pfm_replay_ovfl_intr_count++;
 	}
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index ea6a55e1a0c..82fe6ba2972 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -125,6 +125,10 @@ static struct hw_interrupt_type cpu_interrupt_type = {
 #ifdef CONFIG_SMP
 	.set_affinity	= cpu_set_affinity_irq,
 #endif
+	/* XXX: Needs to be written.  We managed without it so far, but
+	 * we really ought to write it.
+	 */
+	.retrigger	= NULL,
 };
 
 int show_interrupts(struct seq_file *p, void *v)
@@ -404,13 +408,6 @@ void __init init_IRQ(void)
 
 }
 
-void hw_resend_irq(struct hw_interrupt_type *type, unsigned int irq)
-{
-	/* XXX: Needs to be written.  We managed without it so far, but
-	 * we really ought to write it.
-	 */
-}
-
 void ack_bad_irq(unsigned int irq)
 {
 	printk("unexpected IRQ %d\n", irq);
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index 88a8736eb8c..401b687fef2 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -1618,6 +1618,13 @@ static void set_ioapic_affinity_vector (unsigned int vector,
 #endif // CONFIG_SMP
 #endif // CONFIG_PCI_MSI
 
+static int ioapic_retrigger(unsigned int irq)
+{
+	send_IPI_self(IO_APIC_VECTOR(irq));
+
+	return 1;
+}
+
 /*
  * Level and edge triggered IO-APIC interrupts need different handling,
  * so we use two separate IRQ descriptors. Edge triggered IRQs can be
@@ -1638,6 +1645,7 @@ static struct hw_interrupt_type ioapic_edge_type __read_mostly = {
 #ifdef CONFIG_SMP
 	.set_affinity = set_ioapic_affinity,
 #endif
+	.retrigger	= ioapic_retrigger,
 };
 
 static struct hw_interrupt_type ioapic_level_type __read_mostly = {
@@ -1651,6 +1659,7 @@ static struct hw_interrupt_type ioapic_level_type __read_mostly = {
 #ifdef CONFIG_SMP
 	.set_affinity = set_ioapic_affinity,
 #endif
+	.retrigger	= ioapic_retrigger,
 };
 
 static inline void init_IO_APIC_traps(void)
diff --git a/include/asm-alpha/hw_irq.h b/include/asm-alpha/hw_irq.h
index ca9d43b6350..a37db0f9509 100644
--- a/include/asm-alpha/hw_irq.h
+++ b/include/asm-alpha/hw_irq.h
@@ -2,8 +2,6 @@
 #define _ALPHA_HW_IRQ_H
 
 
-static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {}
-
 extern volatile unsigned long irq_err_count;
 
 #ifdef CONFIG_ALPHA_GENERIC
diff --git a/include/asm-cris/hw_irq.h b/include/asm-cris/hw_irq.h
index 341536a234e..298066020af 100644
--- a/include/asm-cris/hw_irq.h
+++ b/include/asm-cris/hw_irq.h
@@ -1,7 +1,5 @@
 #ifndef _ASM_HW_IRQ_H
 #define _ASM_HW_IRQ_H
 
-static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {}
-
 #endif
 
diff --git a/include/asm-i386/hw_irq.h b/include/asm-i386/hw_irq.h
index a4c0a5a9ffd..87e5a351d88 100644
--- a/include/asm-i386/hw_irq.h
+++ b/include/asm-i386/hw_irq.h
@@ -69,14 +69,4 @@ extern atomic_t irq_mis_count;
 
 #define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs))
 
-#if defined(CONFIG_X86_IO_APIC)
-static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i)
-{
-	if (IO_APIC_IRQ(i))
-		send_IPI_self(IO_APIC_VECTOR(i));
-}
-#else
-static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {}
-#endif
-
 #endif /* _ASM_HW_IRQ_H */
diff --git a/include/asm-ia64/hw_irq.h b/include/asm-ia64/hw_irq.h
index ea8b8c407ab..27f9df6b914 100644
--- a/include/asm-ia64/hw_irq.h
+++ b/include/asm-ia64/hw_irq.h
@@ -97,8 +97,7 @@ extern int reserve_irq_vector (int vector);
 extern void ia64_send_ipi (int cpu, int vector, int delivery_mode, int redirect);
 extern void register_percpu_irq (ia64_vector vec, struct irqaction *action);
 
-static inline void
-hw_resend_irq (struct hw_interrupt_type *h, unsigned int vector)
+static inline void ia64_resend_irq(unsigned int vector)
 {
 	platform_send_ipi(smp_processor_id(), vector, IA64_IPI_DM_INT, 0);
 }
diff --git a/include/asm-m32r/hw_irq.h b/include/asm-m32r/hw_irq.h
index 8d7e9d0e09e..7138537cda0 100644
--- a/include/asm-m32r/hw_irq.h
+++ b/include/asm-m32r/hw_irq.h
@@ -1,9 +1,4 @@
 #ifndef _ASM_M32R_HW_IRQ_H
 #define _ASM_M32R_HW_IRQ_H
 
-static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i)
-{
-	/* Nothing to do */
-}
-
 #endif /* _ASM_M32R_HW_IRQ_H */
diff --git a/include/asm-mips/hw_irq.h b/include/asm-mips/hw_irq.h
index c854d017c0e..458d9fdc76b 100644
--- a/include/asm-mips/hw_irq.h
+++ b/include/asm-mips/hw_irq.h
@@ -19,9 +19,9 @@ extern void init_8259A(int aeoi);
 
 extern atomic_t irq_err_count;
 
-/* This may not be apropriate for all machines, we'll see ...  */
-static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i)
-{
-}
+/*
+ * interrupt-retrigger: NOP for now. This may not be apropriate for all
+ * machines, we'll see ...
+ */
 
 #endif /* __ASM_HW_IRQ_H */
diff --git a/include/asm-parisc/hw_irq.h b/include/asm-parisc/hw_irq.h
index 151426e2752..6707f7df392 100644
--- a/include/asm-parisc/hw_irq.h
+++ b/include/asm-parisc/hw_irq.h
@@ -3,15 +3,6 @@
 
 /*
  *	linux/include/asm/hw_irq.h
- *
- *	(C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
- *
- *	moved some of the old arch/i386/kernel/irq.h to here. VY
- *
- *	IRQ/IPI changes taken from work by Thomas Radke
- *	<tomsoft@informatik.tu-chemnitz.de>
  */
 
-extern void hw_resend_irq(struct hw_interrupt_type *, unsigned int);
-
 #endif
diff --git a/include/asm-powerpc/hw_irq.h b/include/asm-powerpc/hw_irq.h
index a27ed3feb31..d40359204ab 100644
--- a/include/asm-powerpc/hw_irq.h
+++ b/include/asm-powerpc/hw_irq.h
@@ -102,11 +102,11 @@ static inline void local_irq_save_ptr(unsigned long *flags)
 			desc->chip->ack(irq);		\
 	})
 
-/* Should we handle this via lost interrupts and IPIs or should we don't care like
- * we do now ? --BenH.
+/*
+ * interrupt-retrigger: should we handle this via lost interrupts and IPIs
+ * or should we not care like we do now ? --BenH.
  */
 struct hw_interrupt_type;
-static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {}
 
 #endif	/* __KERNEL__ */
 #endif	/* _ASM_POWERPC_HW_IRQ_H */
diff --git a/include/asm-sh/hw_irq.h b/include/asm-sh/hw_irq.h
index 1d934fb2c58..fed26616967 100644
--- a/include/asm-sh/hw_irq.h
+++ b/include/asm-sh/hw_irq.h
@@ -1,9 +1,4 @@
 #ifndef __ASM_SH_HW_IRQ_H
 #define __ASM_SH_HW_IRQ_H
 
-static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i)
-{
-	/* Nothing to do */
-}
-
 #endif /* __ASM_SH_HW_IRQ_H */
diff --git a/include/asm-sh64/hw_irq.h b/include/asm-sh64/hw_irq.h
index ae718d1f2d6..ebb39089b0a 100644
--- a/include/asm-sh64/hw_irq.h
+++ b/include/asm-sh64/hw_irq.h
@@ -11,6 +11,5 @@
  * Copyright (C) 2000, 2001  Paolo Alberelli
  *
  */
-static __inline__ void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) { /* Nothing to do */ }
 
 #endif /* __ASM_SH64_HW_IRQ_H */
diff --git a/include/asm-um/hw_irq.h b/include/asm-um/hw_irq.h
index 4ee38c0b6a6..1cf84cf5f21 100644
--- a/include/asm-um/hw_irq.h
+++ b/include/asm-um/hw_irq.h
@@ -4,7 +4,4 @@
 #include "asm/irq.h"
 #include "asm/archparam.h"
 
-static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i)
-{}
-
 #endif
diff --git a/include/asm-v850/hw_irq.h b/include/asm-v850/hw_irq.h
index a8aab434271..043e94bb6bd 100644
--- a/include/asm-v850/hw_irq.h
+++ b/include/asm-v850/hw_irq.h
@@ -1,8 +1,4 @@
 #ifndef __V850_HW_IRQ_H__
 #define __V850_HW_IRQ_H__
 
-static inline void hw_resend_irq (struct hw_interrupt_type *h, unsigned int i)
-{
-}
-
 #endif /* __V850_HW_IRQ_H__ */
diff --git a/include/asm-x86_64/hw_irq.h b/include/asm-x86_64/hw_irq.h
index 93187746278..48a4a5364e8 100644
--- a/include/asm-x86_64/hw_irq.h
+++ b/include/asm-x86_64/hw_irq.h
@@ -127,15 +127,6 @@ __asm__( \
 	"push $~(" #nr ") ; " \
 	"jmp common_interrupt");
 
-#if defined(CONFIG_X86_IO_APIC)
-static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {
-	if (IO_APIC_IRQ(i))
-		send_IPI_self(IO_APIC_VECTOR(i));
-}
-#else
-static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {}
-#endif
-
 #define platform_legacy_irq(irq)	((irq) < 16)
 
 #endif
diff --git a/include/asm-xtensa/hw_irq.h b/include/asm-xtensa/hw_irq.h
index ccf436249ea..3ddbea759b2 100644
--- a/include/asm-xtensa/hw_irq.h
+++ b/include/asm-xtensa/hw_irq.h
@@ -11,8 +11,4 @@
 #ifndef _XTENSA_HW_IRQ_H
 #define _XTENSA_HW_IRQ_H
 
-static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i)
-{
-}
-
 #endif
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 519a1cb7c33..e58cfb9c66a 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -53,6 +53,8 @@ struct hw_interrupt_type {
 	void		(*ack)(unsigned int irq);
 	void		(*end)(unsigned int irq);
 	void		(*set_affinity)(unsigned int irq, cpumask_t dest);
+	int		(*retrigger)(unsigned int irq);
+
 	/* Currently used only by UML, might disappear one day.*/
 #ifdef CONFIG_IRQ_RELEASE_METHOD
 	void		(*release)(unsigned int irq, void *dev_id);
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 76c8eda6729..19b438e09f1 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -123,7 +123,8 @@ void enable_irq(unsigned int irq)
 		desc->status = status;
 		if ((status & (IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) {
 			desc->status = status | IRQ_REPLAY;
-			hw_resend_irq(desc->chip,irq);
+			if (desc->chip && desc->chip->retrigger)
+				desc->chip->retrigger(irq);
 		}
 		desc->chip->enable(irq);
 		/* fall-through */
-- 
cgit v1.2.3-70-g09d2


From dae8620421833bb2e9a01c4ccc42bdc3759b81df Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 29 Jun 2006 02:24:52 -0700
Subject: [PATCH] genirq MSI fixes

This is a fixed up and cleaned up replacement for genirq-msi-fixes.patch,
which should solve the i386 4KSTACKS problem.  I also added Ben's idea of
pushing the __do_IRQ() check into generic_handle_irq().

I booted this with MSI enabled, but i only have MSI devices, not MSI-X
devices.  I'd still expect MSI-X to work now.

irqchip migration helper: call __do_IRQ() if a descriptor is attached to an
irqtype-style controller.  This also fixes MSI-X IRQ handling on i386 and
x86_64.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/kernel/irq.c |  5 +++++
 include/linux/irq.h    | 27 ++++++++++++++++-----------
 2 files changed, 21 insertions(+), 11 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
index 3336cef9605..16b49170396 100644
--- a/arch/i386/kernel/irq.c
+++ b/arch/i386/kernel/irq.c
@@ -82,6 +82,10 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
 	}
 #endif
 
+	if (!irq_desc[irq].handle_irq) {
+		__do_IRQ(irq, regs);
+		goto out_exit;
+	}
 #ifdef CONFIG_4KSTACKS
 
 	curctx = (union irq_ctx *) current_thread_info();
@@ -121,6 +125,7 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
 #endif
 		__do_IRQ(irq, regs);
 
+out_exit:
 	irq_exit();
 
 	return 1;
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 437f2c635db..b40771dd114 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -176,17 +176,6 @@ typedef struct irq_desc		irq_desc_t;
  */
 #include <asm/hw_irq.h>
 
-/*
- * Architectures call this to let the generic IRQ layer
- * handle an interrupt:
- */
-static inline void generic_handle_irq(unsigned int irq, struct pt_regs *regs)
-{
-	struct irq_desc *desc = irq_desc + irq;
-
-	desc->handle_irq(irq, desc, regs);
-}
-
 extern int setup_irq(unsigned int irq, struct irqaction *new);
 
 #ifdef CONFIG_GENERIC_HARDIRQS
@@ -324,6 +313,22 @@ handle_irq_name(void fastcall (*handle)(unsigned int, struct irq_desc *,
  */
 extern fastcall unsigned int __do_IRQ(unsigned int irq, struct pt_regs *regs);
 
+/*
+ * Architectures call this to let the generic IRQ layer
+ * handle an interrupt. If the descriptor is attached to an
+ * irqchip-style controller then we call the ->handle_irq() handler,
+ * and it calls __do_IRQ() if it's attached to an irqtype-style controller.
+ */
+static inline void generic_handle_irq(unsigned int irq, struct pt_regs *regs)
+{
+	struct irq_desc *desc = irq_desc + irq;
+
+	if (likely(desc->handle_irq))
+		desc->handle_irq(irq, desc, regs);
+	else
+		__do_IRQ(irq, regs);
+}
+
 /* Handling of unhandled and spurious interrupts: */
 extern void note_interrupt(unsigned int irq, struct irq_desc *desc,
 			   int action_ret, struct pt_regs *regs);
-- 
cgit v1.2.3-70-g09d2


From 1f1332f727c3229eb2166a83fec5d3de6a73dce2 Mon Sep 17 00:00:00 2001
From: Matt LaPlante <laplam@rpi.edu>
Date: Thu, 29 Jun 2006 01:32:47 -0400
Subject: [PATCH] KConfig: Spellchecking 'similarity' and 'independent'

Several KConfig files had 'similarity' and 'independent' spelled incorrectly...

Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/i386/Kconfig    | 2 +-
 arch/powerpc/Kconfig | 4 ++--
 arch/ppc/Kconfig     | 4 ++--
 arch/sh/Kconfig      | 4 ++--
 arch/x86_64/Kconfig  | 4 ++--
 5 files changed, 9 insertions(+), 9 deletions(-)

(limited to 'arch/i386')

diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index 0463f633590..1718429286d 100644
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -738,7 +738,7 @@ config KEXEC
 	  but it is independent of the system firmware.   And like a reboot
 	  you can start any kernel with it, not just Linux.
 
-	  The name comes from the similiarity to the exec system call.
+	  The name comes from the similarity to the exec system call.
 
 	  It is an ongoing process to be certain the hardware in a machine
 	  is properly shutdown, so do not be surprised if this code does not
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index b9a40a35a9e..2643dbc3f28 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -644,10 +644,10 @@ config KEXEC
 	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot
-	  but it is indepedent of the system firmware.   And like a reboot
+	  but it is independent of the system firmware.   And like a reboot
 	  you can start any kernel with it, not just Linux.
 
-	  The name comes from the similiarity to the exec system call.
+	  The name comes from the similarity to the exec system call.
 
 	  It is an ongoing process to be certain the hardware in a machine
 	  is properly shutdown, so do not be surprised if this code does not
diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index b55de4f42ae..a04cdf01596 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -219,10 +219,10 @@ config KEXEC
 	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot
-	  but it is indepedent of the system firmware.   And like a reboot
+	  but it is independent of the system firmware.   And like a reboot
 	  you can start any kernel with it, not just Linux.
 
-	  The name comes from the similiarity to the exec system call.
+	  The name comes from the similarity to the exec system call.
 
 	  It is an ongoing process to be certain the hardware in a machine
 	  is properly shutdown, so do not be surprised if this code does not
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 2bcecf42257..1a0db1d4c95 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -465,10 +465,10 @@ config KEXEC
 	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot
-	  but it is indepedent of the system firmware.  And like a reboot
+	  but it is independent of the system firmware.  And like a reboot
 	  you can start any kernel with it, not just Linux.
 
-	  The name comes from the similiarity to the exec system call.
+	  The name comes from the similarity to the exec system call.
 
 	  It is an ongoing process to be certain the hardware in a machine
 	  is properly shutdown, so do not be surprised if this code does not
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index 91039844820..e856804c447 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -461,10 +461,10 @@ config KEXEC
 	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot
-	  but it is indepedent of the system firmware.   And like a reboot
+	  but it is independent of the system firmware.   And like a reboot
 	  you can start any kernel with it, not just Linux.
 
-	  The name comes from the similiarity to the exec system call.
+	  The name comes from the similarity to the exec system call.
 
 	  It is an ongoing process to be certain the hardware in a machine
 	  is properly shutdown, so do not be surprised if this code does not
-- 
cgit v1.2.3-70-g09d2