Commit bd4bde14 authored Mar 17, 2015 by Wanpeng Li Committed by Ingo Molnar Mar 27, 2015

sched/deadline: Avoid a superfluous check



Since commit 40767b0d ("sched/deadline: Fix deadline parameter
modification handling") we clear the thottled state when switching
from a dl task, therefore we should never find it set in switching to
a dl task.

Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com>
[ Improved the changelog. ]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Juri Lelli <juri.lelli@arm.com>
Link: http://lkml.kernel.org/r/1426590931-4639-1-git-send-email-wanpeng.li@linux.intel.com


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent d4573c3e

kernel/sched/deadline.c

+0 −8

Original line number	Diff line number	Diff line
		@@ -1665,14 +1665,6 @@ static void switched_to_dl(struct rq rq, struct task_struct p)
		{
		int check_resched = 1;

		/*
		* If p is throttled, don't consider the possibility
		* of preempting rq->curr, the check will be done right
		* after its runtime will get replenished.
		*/
		if (unlikely(p->dl.dl_throttled))
		return;

		if (task_on_rq_queued(p) && rq->curr != p) {
		#ifdef CONFIG_SMP
		if (p->nr_cpus_allowed > 1 && rq->dl.overloaded &&