diff options
| author | Davidlohr Bueso <dave@stgolabs.net> | 2019-01-04 02:28:48 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-01-05 00:13:48 +0300 |
| commit | 34ec35ad8f5f4624e8391dbb83afb4c791f027e3 (patch) | |
| tree | 78a75ab321b42e345f2bd36d7c4b340764208b65 /kernel/sched | |
| parent | 3bb5f4ac55dd91d516e7e36b45c94bd57efbb068 (diff) | |
| download | linux-34ec35ad8f5f4624e8391dbb83afb4c791f027e3.tar.xz | |
kernel/sched/: remove caller signal_pending branch predictions
This is already done for us internally by the signal machinery.
Link: http://lkml.kernel.org/r/20181116002713.8474-3-dave@stgolabs.net
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 2 | ||||
| -rw-r--r-- | kernel/sched/swait.c | 2 | ||||
| -rw-r--r-- | kernel/sched/wait.c | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index f66920173370..17a954c9e153 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -3416,7 +3416,7 @@ static void __sched notrace __schedule(bool preempt) switch_count = &prev->nivcsw; if (!preempt && prev->state) { - if (unlikely(signal_pending_state(prev->state, prev))) { + if (signal_pending_state(prev->state, prev)) { prev->state = TASK_RUNNING; } else { deactivate_task(rq, prev, DEQUEUE_SLEEP | DEQUEUE_NOCLOCK); diff --git a/kernel/sched/swait.c b/kernel/sched/swait.c index 66b59ac77c22..e83a3f8449f6 100644 --- a/kernel/sched/swait.c +++ b/kernel/sched/swait.c @@ -93,7 +93,7 @@ long prepare_to_swait_event(struct swait_queue_head *q, struct swait_queue *wait long ret = 0; raw_spin_lock_irqsave(&q->lock, flags); - if (unlikely(signal_pending_state(state, current))) { + if (signal_pending_state(state, current)) { /* * See prepare_to_wait_event(). TL;DR, subsequent swake_up_one() * must not see us. diff --git a/kernel/sched/wait.c b/kernel/sched/wait.c index 5dd47f1103d1..6eb1f8efd221 100644 --- a/kernel/sched/wait.c +++ b/kernel/sched/wait.c @@ -264,7 +264,7 @@ long prepare_to_wait_event(struct wait_queue_head *wq_head, struct wait_queue_en long ret = 0; spin_lock_irqsave(&wq_head->lock, flags); - if (unlikely(signal_pending_state(state, current))) { + if (signal_pending_state(state, current)) { /* * Exclusive waiter must not fail if it was selected by wakeup, * it should "consume" the condition we were waiting for. |