Merge remote branch 'origin/master' into merge

Manual merge of arch/powerpc/kernel/smp.c and add missing scheduler_ipi()
call to arch/powerpc/platforms/cell/interrupt.c

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

8 files changed, 67 insertions, 97 deletions

diff --git a/arch/powerpc/include/asm/mpic.h b/arch/powerpc/include/asm/mpic.h
index 664bee6622e..df18989e78d 100644
--- a/arch/powerpc/include/asm/mpic.h
+++ b/arch/powerpc/include/asm/mpic.h
@@ -3,7 +3,6 @@
 #ifdef __KERNEL__
 
 #include <linux/irq.h>
-#include <linux/sysdev.h>
 #include <asm/dcr.h>
 #include <asm/msi_bitmap.h>
 
@@ -321,8 +320,6 @@ struct mpic
 	/* link */
 	struct mpic		*next;
 
-	struct sys_device	sysdev;
-
 #ifdef CONFIG_PM
 	struct mpic_irq_save	*save_data;
 #endif
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index dd1973fed30..4a6f2ec7e76 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -119,7 +119,7 @@ static irqreturn_t call_function_action(int irq, void *data)
 
 static irqreturn_t reschedule_action(int irq, void *data)
 {
-	/* we just need the return path side effect of checking need_resched */
+	scheduler_ipi();
 	return IRQ_HANDLED;
 }
 
@@ -224,7 +224,7 @@ irqreturn_t smp_ipi_demux(void)
 		if (all & (1 << (24 - 8 * PPC_MSG_CALL_FUNCTION)))
 			generic_smp_call_function_interrupt();
 		if (all & (1 << (24 - 8 * PPC_MSG_RESCHEDULE)))
-			reschedule_action(0, NULL); /* upcoming sched hook */
+			scheduler_ipi();
 		if (all & (1 << (24 - 8 * PPC_MSG_CALL_FUNC_SINGLE)))
 			generic_smp_call_function_single_interrupt();
 		if (all & (1 << (24 - 8 * PPC_MSG_DEBUGGER_BREAK)))
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 06b9d457d0a..b13306b0d92 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -143,7 +143,6 @@ int die(const char *str, struct pt_regs *regs, long err)
 #endif
 		printk("%s\n", ppc_md.name ? ppc_md.name : "");
 
-		sysfs_printk_last_file();
 		if (notify_die(DIE_OOPS, str, regs, err, 255,
 			       SIGSEGV) == NOTIFY_STOP)
 			return 1;
diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c
index 6a58744d66c..449c08c1586 100644
--- a/arch/powerpc/platforms/cell/interrupt.c
+++ b/arch/powerpc/platforms/cell/interrupt.c
@@ -201,7 +201,7 @@ static irqreturn_t iic_ipi_action(int irq, void *dev_id)
 		generic_smp_call_function_interrupt();
 		break;
 	case PPC_MSG_RESCHEDULE:
-		/* Upcoming sched hook */
+		scheduler_ipi();
 		break;
 	case PPC_MSG_CALL_FUNC_SINGLE:
 		generic_smp_call_function_single_interrupt();
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index acfaccea5f4..3675da73623 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -32,6 +32,7 @@
 #include <linux/io.h>
 #include <linux/mutex.h>
 #include <linux/linux_logo.h>
+#include <linux/syscore_ops.h>
 #include <asm/spu.h>
 #include <asm/spu_priv1.h>
 #include <asm/spu_csa.h>
@@ -521,18 +522,8 @@ void spu_init_channels(struct spu *spu)
 }
 EXPORT_SYMBOL_GPL(spu_init_channels);
 
-static int spu_shutdown(struct sys_device *sysdev)
-{
-	struct spu *spu = container_of(sysdev, struct spu, sysdev);
-
-	spu_free_irqs(spu);
-	spu_destroy_spu(spu);
-	return 0;
-}
-
 static struct sysdev_class spu_sysdev_class = {
 	.name = "spu",
-	.shutdown = spu_shutdown,
 };
 
 int spu_add_sysdev_attr(struct sysdev_attribute *attr)
@@ -797,6 +788,22 @@ static inline void crash_register_spus(struct list_head *list)
 }
 #endif
 
+static void spu_shutdown(void)
+{
+	struct spu *spu;
+
+	mutex_lock(&spu_full_list_mutex);
+	list_for_each_entry(spu, &spu_full_list, full_list) {
+		spu_free_irqs(spu);
+		spu_destroy_spu(spu);
+	}
+	mutex_unlock(&spu_full_list_mutex);
+}
+
+static struct syscore_ops spu_syscore_ops = {
+	.shutdown = spu_shutdown,
+};
+
 static int __init init_spu_base(void)
 {
 	int i, ret = 0;
@@ -830,6 +837,7 @@ static int __init init_spu_base(void)
 	crash_register_spus(&spu_full_list);
 	mutex_unlock(&spu_full_list_mutex);
 	spu_add_sysdev_attr(&attr_stat);
+	register_syscore_ops(&spu_syscore_ops);
 
 	spu_init_affinity();
 
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index 360260d1352..9089b042119 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -21,7 +21,7 @@
 #include <linux/signal.h>
 #include <linux/pci.h>
 #include <linux/interrupt.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/adb.h>
 #include <linux/pmu.h>
 #include <linux/module.h>
@@ -674,7 +674,7 @@ not_found:
 	return viaint;
 }
 
-static int pmacpic_suspend(struct sys_device *sysdev, pm_message_t state)
+static int pmacpic_suspend(void)
 {
 	int viaint = pmacpic_find_viaint();
 
@@ -695,7 +695,7 @@ static int pmacpic_suspend(struct sys_device *sysdev, pm_message_t state)
         return 0;
 }
 
-static int pmacpic_resume(struct sys_device *sysdev)
+static void pmacpic_resume(void)
 {
 	int i;
 
@@ -706,39 +706,19 @@ static int pmacpic_resume(struct sys_device *sysdev)
 	for (i = 0; i < max_real_irqs; ++i)
 		if (test_bit(i, sleep_save_mask))
 			pmac_unmask_irq(irq_get_irq_data(i));
-
-	return 0;
 }
 
-#endif /* CONFIG_PM && CONFIG_PPC32 */
-
-static struct sysdev_class pmacpic_sysclass = {
-	.name = "pmac_pic",
+static struct syscore_ops pmacpic_syscore_ops = {
+	.suspend	= pmacpic_suspend,
+	.resume		= pmacpic_resume,
 };
 
-static struct sys_device device_pmacpic = {
-	.id		= 0,
-	.cls		= &pmacpic_sysclass,
-};
-
-static struct sysdev_driver driver_pmacpic = {
-#if defined(CONFIG_PM) && defined(CONFIG_PPC32)
-	.suspend	= &pmacpic_suspend,
-	.resume		= &pmacpic_resume,
-#endif /* CONFIG_PM && CONFIG_PPC32 */
-};
-
-static int __init init_pmacpic_sysfs(void)
+static int __init init_pmacpic_syscore(void)
 {
-#ifdef CONFIG_PPC32
-	if (max_irqs == 0)
-		return -ENODEV;
-#endif
-	printk(KERN_DEBUG "Registering pmac pic with sysfs...\n");
-	sysdev_class_register(&pmacpic_sysclass);
-	sysdev_register(&device_pmacpic);
-	sysdev_driver_register(&pmacpic_sysclass, &driver_pmacpic);
+	register_syscore_ops(&pmacpic_syscore_ops);
 	return 0;
 }
-machine_subsys_initcall(powermac, init_pmacpic_sysfs);
 
+machine_subsys_initcall(powermac, init_pmacpic_syscore);
+
+#endif /* CONFIG_PM && CONFIG_PPC32 */
diff --git a/arch/powerpc/sysdev/ipic.c b/arch/powerpc/sysdev/ipic.c
index f0ece79f9be..7367d17364c 100644
--- a/arch/powerpc/sysdev/ipic.c
+++ b/arch/powerpc/sysdev/ipic.c
@@ -18,7 +18,7 @@
 #include <linux/stddef.h>
 #include <linux/sched.h>
 #include <linux/signal.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/device.h>
 #include <linux/bootmem.h>
 #include <linux/spinlock.h>
@@ -900,7 +900,7 @@ static struct {
 	u32 sercr;
 } ipic_saved_state;
 
-static int ipic_suspend(struct sys_device *sdev, pm_message_t state)
+static int ipic_suspend(void)
 {
 	struct ipic *ipic = primary_ipic;
 
@@ -931,7 +931,7 @@ static int ipic_suspend(struct sys_device *sdev, pm_message_t state)
 	return 0;
 }
 
-static int ipic_resume(struct sys_device *sdev)
+static void ipic_resume(void)
 {
 	struct ipic *ipic = primary_ipic;
 
@@ -947,44 +947,26 @@ static int ipic_resume(struct sys_device *sdev)
 	ipic_write(ipic->regs, IPIC_SECNR, ipic_saved_state.secnr);
 	ipic_write(ipic->regs, IPIC_SERMR, ipic_saved_state.sermr);
 	ipic_write(ipic->regs, IPIC_SERCR, ipic_saved_state.sercr);
-
-	return 0;
 }
 #else
 #define ipic_suspend NULL
 #define ipic_resume NULL
 #endif
 
-static struct sysdev_class ipic_sysclass = {
-	.name = "ipic",
+static struct syscore_ops ipic_syscore_ops = {
 	.suspend = ipic_suspend,
 	.resume = ipic_resume,
 };
 
-static struct sys_device device_ipic = {
-	.id		= 0,
-	.cls		= &ipic_sysclass,
-};
-
-static int __init init_ipic_sysfs(void)
+static int __init init_ipic_syscore(void)
 {
-	int rc;
-
 	if (!primary_ipic || !primary_ipic->regs)
 		return -ENODEV;
-	printk(KERN_DEBUG "Registering ipic with sysfs...\n");
 
-	rc = sysdev_class_register(&ipic_sysclass);
-	if (rc) {
-		printk(KERN_ERR "Failed registering ipic sys class\n");
-		return -ENODEV;
-	}
-	rc = sysdev_register(&device_ipic);
-	if (rc) {
-		printk(KERN_ERR "Failed registering ipic sys device\n");
-		return -ENODEV;
-	}
+	printk(KERN_DEBUG "Registering ipic system core operations\n");
+	register_syscore_ops(&ipic_syscore_ops);
+
 	return 0;
 }
 
-subsys_initcall(init_ipic_sysfs);
+subsys_initcall(init_ipic_syscore);
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 57e954142c7..3a8de5bb628 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -28,6 +28,7 @@
 #include <linux/spinlock.h>
 #include <linux/pci.h>
 #include <linux/slab.h>
+#include <linux/syscore_ops.h>
 
 #include <asm/ptrace.h>
 #include <asm/signal.h>
@@ -1793,9 +1794,8 @@ void mpic_reset_core(int cpu)
 #endif /* CONFIG_SMP */
 
 #ifdef CONFIG_PM
-static int mpic_suspend(struct sys_device *dev, pm_message_t state)
+static void mpic_suspend_one(struct mpic *mpic)
 {
-	struct mpic *mpic = container_of(dev, struct mpic, sysdev);
 	int i;
 
 	for (i = 0; i < mpic->num_sources; i++) {
@@ -1804,13 +1804,22 @@ static int mpic_suspend(struct sys_device *dev, pm_message_t state)
 		mpic->save_data[i].dest =
 			mpic_irq_read(i, MPIC_INFO(IRQ_DESTINATION));
 	}
+}
+
+static int mpic_suspend(void)
+{
+	struct mpic *mpic = mpics;
+
+	while (mpic) {
+		mpic_suspend_one(mpic);
+		mpic = mpic->next;
+	}
 
 	return 0;
 }
 
-static int mpic_resume(struct sys_device *dev)
+static void mpic_resume_one(struct mpic *mpic)
 {
-	struct mpic *mpic = container_of(dev, struct mpic, sysdev);
 	int i;
 
 	for (i = 0; i < mpic->num_sources; i++) {
@@ -1837,33 +1846,28 @@ static int mpic_resume(struct sys_device *dev)
 	}
 #endif
 	} /* end for loop */
+}
 
-	return 0;
+static void mpic_resume(void)
+{
+	struct mpic *mpic = mpics;
+
+	while (mpic) {
+		mpic_resume_one(mpic);
+		mpic = mpic->next;
+	}
 }
-#endif
 
-static struct sysdev_class mpic_sysclass = {
-#ifdef CONFIG_PM
+static struct syscore_ops mpic_syscore_ops = {
 	.resume = mpic_resume,
 	.suspend = mpic_suspend,
-#endif
-	.name = "mpic",
 };
 
 static int mpic_init_sys(void)
 {
-	struct mpic *mpic = mpics;
-	int error, id = 0;
-
-	error = sysdev_class_register(&mpic_sysclass);
-
-	while (mpic && !error) {
-		mpic->sysdev.cls = &mpic_sysclass;
-		mpic->sysdev.id = id++;
-		error = sysdev_register(&mpic->sysdev);
-		mpic = mpic->next;
-	}
-	return error;
+	register_syscore_ops(&mpic_syscore_ops);
+	return 0;
 }
 
 device_initcall(mpic_init_sys);
+#endif