sched: rt: dont stop the period timer when there are tasks wanting to run

So if the group ever gets throttled, it will never wake up again.

Reported-by: "Daniel K." <dk@uw.no>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Tested-by: Daniel K. <dk@uw.no>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 1dad5bbb59b647eed6aa7e8a75cd4fef2297d194..0f3c19197fa4e0ca4c614916efc818554db5afef 100644 (file)
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -250,7 +250,8 @@ static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun)
                        if (rt_rq->rt_time || rt_rq->rt_nr_running)
                                idle = 0;
                        spin_unlock(&rt_rq->rt_runtime_lock);
-               }
+               } else if (rt_rq->rt_nr_running)
+                       idle = 0;
 
                if (enqueue)
                        sched_rt_rq_enqueue(rt_rq);