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authorIngo Molnar <mingo@elte.hu>2009-10-15 11:33:56 +0200
committerIngo Molnar <mingo@elte.hu>2009-10-15 11:34:00 +0200
commit713490e02eed242b4c1c672b3c0c8b708f8b6f1d (patch)
tree8485759cfc112366d2485f473ad348a1c714f421 /lib
parentc4dc775f53136cd6af8f88bce67cce9b42751768 (diff)
parent1beee96bae0daf7f491356777c3080cc436950f5 (diff)
Merge branch 'tracing/core' into perf/core
Merge reason: to add event filter support we need the following commits from the tracing tree: 3f6fe06: tracing/filters: Unify the regex parsing helpers 1889d20: tracing/filters: Provide basic regex support 737f453: tracing/filters: Cleanup useless headers Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'lib')
-rw-r--r--lib/kernel_lock.c20
1 files changed, 14 insertions, 6 deletions
diff --git a/lib/kernel_lock.c b/lib/kernel_lock.c
index 39f1029e352..4ebfa5a164d 100644
--- a/lib/kernel_lock.c
+++ b/lib/kernel_lock.c
@@ -5,10 +5,13 @@
* relegated to obsolescence, but used by various less
* important (or lazy) subsystems.
*/
-#include <linux/smp_lock.h>
#include <linux/module.h>
#include <linux/kallsyms.h>
#include <linux/semaphore.h>
+#include <linux/smp_lock.h>
+
+#define CREATE_TRACE_POINTS
+#include <trace/events/bkl.h>
/*
* The 'big kernel lock'
@@ -113,21 +116,26 @@ static inline void __unlock_kernel(void)
* This cannot happen asynchronously, so we only need to
* worry about other CPU's.
*/
-void __lockfunc lock_kernel(void)
+void __lockfunc _lock_kernel(const char *func, const char *file, int line)
{
- int depth = current->lock_depth+1;
+ int depth = current->lock_depth + 1;
+
+ trace_lock_kernel(func, file, line);
+
if (likely(!depth))
__lock_kernel();
current->lock_depth = depth;
}
-void __lockfunc unlock_kernel(void)
+void __lockfunc _unlock_kernel(const char *func, const char *file, int line)
{
BUG_ON(current->lock_depth < 0);
if (likely(--current->lock_depth < 0))
__unlock_kernel();
+
+ trace_unlock_kernel(func, file, line);
}
-EXPORT_SYMBOL(lock_kernel);
-EXPORT_SYMBOL(unlock_kernel);
+EXPORT_SYMBOL(_lock_kernel);
+EXPORT_SYMBOL(_unlock_kernel);