Commit-ID: 390f3258cb2d031f1c17aa32e771ebd336e89073 Gitweb: http://git.kernel.org/tip/390f3258cb2d031f1c17aa32e771ebd336e89073 Author: Kirill Tkhai <ktk...@parallels.com> AuthorDate: Tue, 28 Jan 2014 11:26:14 +0400 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Sun, 9 Feb 2014 13:31:48 +0100
sched/deadline: Skip in switched_to_dl() if task is current When p is current and it's not of dl class, then there are no other dl taks in the rq. If we had had pushable tasks in some other rq, they would have been pushed earlier. So, skip "p == rq->curr" case. Signed-off-by: Kirill Tkhai <ktk...@parallels.com> Acked-by: Juri Lelli <juri.le...@gmail.com> Signed-off-by: Peter Zijlstra <pet...@infradead.org> Link: http://lkml.kernel.org/r/20140128072421.32315.25300.stgit@tkhai Signed-off-by: Ingo Molnar <mi...@kernel.org> --- kernel/sched/deadline.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index 0dd5e09..b5700bc 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -1560,7 +1560,7 @@ static void switched_to_dl(struct rq *rq, struct task_struct *p) if (unlikely(p->dl.dl_throttled)) return; - if (p->on_rq || rq->curr != p) { + if (p->on_rq && rq->curr != p) { #ifdef CONFIG_SMP if (rq->dl.overloaded && push_dl_task(rq) && rq != task_rq(p)) /* Only reschedule if pushing failed */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
