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sched/rt: Add reschedule check to switched_from_rt()

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Reschedule rq->curr if the first RT task has just been
pulled to the rq.

Signed-off-by: Kirill V Tkhai <tkhai@yandex.ru>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tkhai Kirill <tkhai@yandex.ru>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/118761353614535@web28f.yandex.ru
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Kirill Tkhai 2012-11-23 00:02:15 +04:00 committed by Ingo Molnar
parent a59f4e079d
commit 1158ddb554
1 changed files with 5 additions and 2 deletions
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7
kernel/sched/rt.c
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@ -1889,8 +1889,11 @@ static void switched_from_rt(struct rq *rq, struct task_struct *p)
* we may need to handle the pulling of RT tasks
* now.
*/
if (p->on_rq && !rq->rt.rt_nr_running)
pull_rt_task(rq);
if (!p->on_rq || rq->rt.rt_nr_running)
return;
if (pull_rt_task(rq))
resched_task(rq->curr);
}
void init_sched_rt_class(void)