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authorWanpeng Li <wanpeng.li@linux.intel.com>2015-05-13 14:01:06 +0800
committerIngo Molnar <mingo@kernel.org>2015-06-19 10:06:47 +0200
commit6713c3aa7f63626c0cecf9c509fb48d885b2dd12 (patch)
tree4774b5f4d13f2fca134a61e8546661325a568fe4 /kernel
parent178a4d23e4e6a0a90b086dad86697676b49db60a (diff)
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')
-rw-r--r--kernel/sched/core.c1
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;