Commit c74f66ce authored by liguang's avatar liguang Committed by Linus Torvalds
Browse files

semaphore: use unlikely() for down's timeout 



Signed-off-by: default avatarliguang <lig.fnst@cn.fujitsu.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 97439d0f

kernel/semaphore.c

+1 −1
Original line number Diff line number Diff line
@@ -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);