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| author |   Wanpeng Li <wanpeng.li@linux.intel.com> | 2015-05-13 14:01:06 +0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2015-06-19 10:06:47 +0200 |
| commit | 6713c3aa7f63626c0cecf9c509fb48d885b2dd12 (patch) | |
| tree | 4774b5f4d13f2fca134a61e8546661325a568fe4 /kernel/sched/core.c | |
| parent | sched/deadline: Drop duplicate init_sched_dl_class() declaration (diff) | |
| download | linux-dev-6713c3aa7f63626c0cecf9c509fb48d885b2dd12.tar.xz linux-dev-6713c3aa7f63626c0cecf9c509fb48d885b2dd12.zip | |
sched: Remove superfluous resetting of the p->dl_throttled flag
Resetting the p->dl_throttled flag in rt_mutex_setprio() (for a task that is going
to be boosted) is superfluous, as the natural place to do so is in
replenish_dl_entity().
If the task was on the runqueue and it is boosted by a DL task, it will be enqueued
back with ENQUEUE_REPLENISH flag set, which can guarantee that dl_throttled is
reset in replenish_dl_entity().
This patch drops the resetting of throttled status in function rt_mutex_setprio().
Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Juri Lelli <juri.lelli@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1431496867-4194-6-git-send-email-wanpeng.li@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/core.c')
| -rw-r--r-- | kernel/sched/core.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 1428c7cebe2f..10338ce78be4 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -3099,7 +3099,6 @@ void rt_mutex_setprio(struct task_struct *p, int prio) if (!dl_prio(p->normal_prio) || (pi_task && dl_entity_preempt(&pi_task->dl, &p->dl))) { p->dl.dl_boosted = 1; - p->dl.dl_throttled = 0; enqueue_flag = ENQUEUE_REPLENISH; } else p->dl.dl_boosted = 0; |