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authorIngo Molnar <mingo@elte.hu>2006-12-07 04:39:32 (GMT)
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 16:39:43 (GMT)
commit2ee91f197c0bc654b24eed5831fd12aa0d566a7d (patch)
tree85f9013d1cf17d6a947bbad723ce0cb5427a3dac /kernel/mutex-debug.c
parent50cc670aebf4fc64afaf533fb9fa1c8570f09d74 (diff)
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[PATCH] lockdep: show more details about self-test failures
Make the locking self-test failures (of 'FAILURE' type) easier to debug by printing more information. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/mutex-debug.c')
-rw-r--r--kernel/mutex-debug.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/mutex-debug.c b/kernel/mutex-debug.c
index 1865164..841539d 100644
--- a/kernel/mutex-debug.c
+++ b/kernel/mutex-debug.c
@@ -77,6 +77,9 @@ void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter,
void debug_mutex_unlock(struct mutex *lock)
{
+ if (unlikely(!debug_locks))
+ return;
+
DEBUG_LOCKS_WARN_ON(lock->owner != current_thread_info());
DEBUG_LOCKS_WARN_ON(lock->magic != lock);
DEBUG_LOCKS_WARN_ON(!lock->wait_list.prev && !lock->wait_list.next);