The patch titled
Subject: semaphore: use unlikely() for down's timeout
has been added to the -mm tree. Its filename is
semaphore-give-an-unlikely-for-downs-timeout.patch
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------------------------------------------------------
From: liguang <lig.fnst@xxxxxxxxxxxxxx>
Subject: semaphore: use unlikely() for down's timeout
Signed-off-by: liguang <lig.fnst@xxxxxxxxxxxxxx>
Cc: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/semaphore.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN kernel/semaphore.c~semaphore-give-an-unlikely-for-downs-timeout kernel/semaphore.c
--- a/kernel/semaphore.c~semaphore-give-an-unlikely-for-downs-timeout
+++ a/kernel/semaphore.c
@@ -214,7 +214,7 @@ static inline int __sched __down_common(
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);
_
Patches currently in -mm which might be from lig.fnst@xxxxxxxxxxxxxx are
semaphore-give-an-unlikely-for-downs-timeout.patch
semaphore-boolize-semaphore_waiters-up.patch
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