From cd66091162d34f589631a23bbe0ed214798245b4 Mon Sep 17 00:00:00 2001 From: Wanpeng Li Date: Fri, 31 Oct 2014 06:39:35 +0800 Subject: sched/deadline: Reschedule from switched_from_dl() after a successful pull In switched_from_dl() we have to issue a resched if we successfully pulled some task from other cpus. This patch also aligns the behavior with -rt. Suggested-by: Juri Lelli Signed-off-by: Wanpeng Li Signed-off-by: Peter Zijlstra (Intel) Cc: Kirill Tkhai Cc: Linus Torvalds Link: http://lkml.kernel.org/r/1414708776-124078-5-git-send-email-wanpeng.li@linux.intel.com Signed-off-by: Ingo Molnar --- kernel/sched/deadline.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'kernel/sched') diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index e7779b3feec4..362ab1f886b0 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -1643,8 +1643,11 @@ static void switched_from_dl(struct rq *rq, struct task_struct *p) * this is the right place to try to pull some other one * from an overloaded cpu, if any. */ - if (!rq->dl.dl_nr_running) - pull_dl_task(rq); + if (!task_on_rq_queued(p) || rq->dl.dl_nr_running) + return; + + if (pull_dl_task(rq)) + resched_curr(rq); #endif } -- cgit v1.2.3