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>
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 8bfdb3f..f1f215d 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -94,8 +94,11 @@
struct sched_rt_entity *rt_se = rt_rq->rt_se;
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);
- resched_task(rq_of_rt_rq(rt_rq)->curr);
+ if (rt_rq->highest_prio < curr->prio)
+ resched_task(curr);
}
}
