Merge branch 'linus' into tracing/core

Merge reason: tracing/core was on a .30-rc1 base and was missing out on
              on a handful of tracing fixes present in .30-rc5-almost.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

6 files changed, 17 insertions, 62 deletions

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index c6e854f215f..812c28207ba 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -440,7 +440,7 @@ config LOCKDEP
 	bool
 	depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
 	select STACKTRACE
-	select FRAME_POINTER if !X86 && !MIPS && !PPC && !ARM_UNWIND
+	select FRAME_POINTER if !X86 && !MIPS && !PPC && !ARM_UNWIND && !S390
 	select KALLSYMS
 	select KALLSYMS_ALL
 
@@ -620,7 +620,7 @@ config ARCH_WANT_FRAME_POINTERS
 config FRAME_POINTER
 	bool "Compile the kernel with frame pointers"
 	depends on DEBUG_KERNEL && \
-		(CRIS || M68K || M68KNOMMU || FRV || UML || S390 || \
+		(CRIS || M68K || M68KNOMMU || FRV || UML || \
 		 AVR32 || SUPERH || BLACKFIN || MN10300) || \
 		ARCH_WANT_FRAME_POINTERS
 	default y if (DEBUG_INFO && UML) || ARCH_WANT_FRAME_POINTERS
@@ -809,13 +809,13 @@ config FAULT_INJECTION_STACKTRACE_FILTER
 	depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT
 	depends on !X86_64
 	select STACKTRACE
-	select FRAME_POINTER if !PPC
+	select FRAME_POINTER if !PPC && !S390
 	help
 	  Provide stacktrace filter for fault-injection capabilities
 
 config LATENCYTOP
 	bool "Latency measuring infrastructure"
-	select FRAME_POINTER if !MIPS && !PPC
+	select FRAME_POINTER if !MIPS && !PPC && !S390
 	select KALLSYMS
 	select KALLSYMS_ALL
 	select STACKTRACE
diff --git a/lib/Makefile b/lib/Makefile
index d6edd6753f4..33a40e40e3e 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -38,7 +38,7 @@ lib-$(CONFIG_RWSEM_GENERIC_SPINLOCK) += rwsem-spinlock.o
 lib-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += rwsem.o
 lib-$(CONFIG_GENERIC_FIND_FIRST_BIT) += find_next_bit.o
 lib-$(CONFIG_GENERIC_FIND_NEXT_BIT) += find_next_bit.o
-lib-$(CONFIG_GENERIC_FIND_LAST_BIT) += find_last_bit.o
+obj-$(CONFIG_GENERIC_FIND_LAST_BIT) += find_last_bit.o
 obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o
 obj-$(CONFIG_LOCK_KERNEL) += kernel_lock.o
 obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index d3da7edc034..69da09a085a 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -400,60 +400,9 @@ out_err:
 	return -ENOMEM;
 }
 
-static int device_dma_allocations(struct device *dev)
-{
-	struct dma_debug_entry *entry;
-	unsigned long flags;
-	int count = 0, i;
-
-	for (i = 0; i < HASH_SIZE; ++i) {
-		spin_lock_irqsave(&dma_entry_hash[i].lock, flags);
-		list_for_each_entry(entry, &dma_entry_hash[i].list, list) {
-			if (entry->dev == dev)
-				count += 1;
-		}
-		spin_unlock_irqrestore(&dma_entry_hash[i].lock, flags);
-	}
-
-	return count;
-}
-
-static int dma_debug_device_change(struct notifier_block *nb,
-				    unsigned long action, void *data)
-{
-	struct device *dev = data;
-	int count;
-
-
-	switch (action) {
-	case BUS_NOTIFY_UNBIND_DRIVER:
-		count = device_dma_allocations(dev);
-		if (count == 0)
-			break;
-		err_printk(dev, NULL, "DMA-API: device driver has pending "
-				"DMA allocations while released from device "
-				"[count=%d]\n", count);
-		break;
-	default:
-		break;
-	}
-
-	return 0;
-}
-
 void dma_debug_add_bus(struct bus_type *bus)
 {
-	struct notifier_block *nb;
-
-	nb = kzalloc(sizeof(struct notifier_block), GFP_KERNEL);
-	if (nb == NULL) {
-		printk(KERN_ERR "dma_debug_add_bus: out of memory\n");
-		return;
-	}
-
-	nb->notifier_call = dma_debug_device_change;
-
-	bus_register_notifier(bus, nb);
+	/* FIXME: register notifier */
 }
 
 /*
diff --git a/lib/kobject.c b/lib/kobject.c
index a6dec32f2dd..bacf6fe4f7a 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -218,6 +218,9 @@ int kobject_set_name_vargs(struct kobject *kobj, const char *fmt,
 	const char *old_name = kobj->name;
 	char *s;
 
+	if (kobj->name && !fmt)
+		return 0;
+
 	kobj->name = kvasprintf(GFP_KERNEL, fmt, vargs);
 	if (!kobj->name)
 		return -ENOMEM;
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 97a777ad4f5..920a3ca6e25 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -258,7 +258,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
 			goto exit;
 
 		retval = call_usermodehelper(argv[0], argv,
-					     env->envp, UMH_NO_WAIT);
+					     env->envp, UMH_WAIT_EXEC);
 	}
 
 exit:
@@ -328,7 +328,7 @@ static int __init kobject_uevent_init(void)
 		       "kobject_uevent: unable to create netlink socket!\n");
 		return -ENODEV;
 	}
-
+	netlink_set_nonroot(NETLINK_KOBJECT_UEVENT, NL_NONROOT_RECV);
 	return 0;
 }
 
diff --git a/lib/scatterlist.c b/lib/scatterlist.c
index b7b449dafbe..a295e404e90 100644
--- a/lib/scatterlist.c
+++ b/lib/scatterlist.c
@@ -347,9 +347,12 @@ bool sg_miter_next(struct sg_mapping_iter *miter)
 	sg_miter_stop(miter);
 
 	/* get to the next sg if necessary.  __offset is adjusted by stop */
-	if (miter->__offset == miter->__sg->length && --miter->__nents) {
-		miter->__sg = sg_next(miter->__sg);
-		miter->__offset = 0;
+	while (miter->__offset == miter->__sg->length) {
+		if (--miter->__nents) {
+			miter->__sg = sg_next(miter->__sg);
+			miter->__offset = 0;
+		} else
+			return false;
 	}
 
 	/* map the next page */