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sched: rt-group: reduce rescheduling 

Only reschedule if the new group has a higher prio task.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2008-01-25 21:08:32 +01:00 committed by Ingo Molnar
parent 37bb6cb409
commit 1020387f5f
1 changed files with 4 additions and 1 deletions
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5
kernel/sched_rt.c
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@ -94,8 +94,11 @@ static void sched_rt_ratio_enqueue(struct rt_rq *rt_rq)
struct sched_rt_entity *rt_se = rt_rq->rt_se; struct sched_rt_entity *rt_se = rt_rq->rt_se;
if (rt_se && !on_rt_rq(rt_se) && rt_rq->rt_nr_running) { if (rt_se && !on_rt_rq(rt_se) && rt_rq->rt_nr_running) {
struct task_struct *curr = rq_of_rt_rq(rt_rq)->curr;
enqueue_rt_entity(rt_se); enqueue_rt_entity(rt_se);
resched_task(rq_of_rt_rq(rt_rq)->curr); if (rt_rq->highest_prio < curr->prio)
resched_task(curr);
} }
} }