Commit-ID:  99b625670f1447ecf0739161efbe7f2f43c0e0b6
Gitweb:     http://git.kernel.org/tip/99b625670f1447ecf0739161efbe7f2f43c0e0b6
Author:     Kirill Tkhai <[email protected]>
AuthorDate: Wed, 25 Jun 2014 12:19:48 +0400
Committer:  Ingo Molnar <[email protected]>
CommitDate: Sat, 5 Jul 2014 11:17:44 +0200

sched/rt: Enqueue just unthrottled rt_rq back on the stack in 
__disable_runtime()

Make rt_rq available for pick_next_task(). Otherwise, their tasks
stay prisoned long time till dead cpu becomes alive again.

Reviewed-by: Srikar Dronamraju <[email protected]>
Signed-off-by: Kirill Tkhai <[email protected]>
CC: Konstantin Khorenko <[email protected]>
CC: Ben Segall <[email protected]>
CC: Paul Turner <[email protected]>
CC: Mike Galbraith <[email protected]>
Cc: Linus Torvalds <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/1403684388.3462.43.camel@tkhai
Signed-off-by: Ingo Molnar <[email protected]>
---
 kernel/sched/rt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index a490831..671a8b5 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -740,6 +740,9 @@ balanced:
                rt_rq->rt_throttled = 0;
                raw_spin_unlock(&rt_rq->rt_runtime_lock);
                raw_spin_unlock(&rt_b->rt_runtime_lock);
+
+               /* Make rt_rq available for pick_next_task() */
+               sched_rt_rq_enqueue(rt_rq);
        }
 }
 
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