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authorliguang <lig.fnst@cn.fujitsu.com>2013-04-30 15:28:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 17:04:08 -0700
commitc74f66ce102e2cfb61c185f7451538e29de640b9 (patch)
tree20ad92052a52f5cc080633d5a2e6a2e400d2f010 /kernel
parent97439d0f84942d3031545e80852dde09457136c6 (diff)
downloadlinux-c74f66ce102e2cfb61c185f7451538e29de640b9.tar.bz2
semaphore: use unlikely() for down's timeout
Signed-off-by: liguang <lig.fnst@cn.fujitsu.com> Cc: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/semaphore.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/semaphore.c b/kernel/semaphore.c
index 4567fc020fe3..9c7017d1d996 100644
--- a/kernel/semaphore.c
+++ b/kernel/semaphore.c
@@ -214,7 +214,7 @@ static inline int __sched __down_common(struct semaphore *sem, long state,
for (;;) {
if (signal_pending_state(state, task))
goto interrupted;
- if (timeout <= 0)
+ if (unlikely(timeout <= 0))
goto timed_out;
__set_task_state(task, state);
raw_spin_unlock_irq(&sem->lock);