From: Wanpeng Li Date: Tue, 17 Mar 2015 11:15:30 +0000 (+0800) Subject: sched/deadline: Avoid a superfluous check X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=bd4bde14b93cce8fa77765ff709e0be55abdba2c;p=openwrt%2Fstaging%2Fblogic.git sched/deadline: Avoid a superfluous check Since commit 40767b0dc768 ("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 [ Improved the changelog. ] Signed-off-by: Peter Zijlstra (Intel) Acked-by: Juri Lelli Link: http://lkml.kernel.org/r/1426590931-4639-1-git-send-email-wanpeng.li@linux.intel.com Signed-off-by: Ingo Molnar --- diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index 0a81a954c041..24c18dc10fd7 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -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 &&