Commit-ID: cd66091162d34f589631a23bbe0ed214798245b4 Gitweb: http://git.kernel.org/tip/cd66091162d34f589631a23bbe0ed214798245b4 Author: Wanpeng Li <wanpeng.li@xxxxxxxxxxxxxxx> AuthorDate: Fri, 31 Oct 2014 06:39:35 +0800 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Tue, 4 Nov 2014 07:17:55 +0100 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 <juri.lelli@xxxxxxx> Signed-off-by: Wanpeng Li <wanpeng.li@xxxxxxxxxxxxxxx> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Cc: Kirill Tkhai <ktkhai@xxxxxxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Link: http://lkml.kernel.org/r/1414708776-124078-5-git-send-email-wanpeng.li@xxxxxxxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- kernel/sched/deadline.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index e7779b3..362ab1f 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 } -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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