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authorKirill Tkhai <ktkhai@parallels.com>2014-06-25 12:19:48 +0400
committerIngo Molnar <mingo@kernel.org>2014-07-05 11:17:44 +0200
commit99b625670f1447ecf0739161efbe7f2f43c0e0b6 (patch)
tree81106175ac54b685be1622fee04c934f71783bc6 /kernel/sched/rt.c
parent0e59bdaea75f12a7d7c03672f4ac22c0119a1bc0 (diff)
downloadlinux-99b625670f1447ecf0739161efbe7f2f43c0e0b6.tar.bz2
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 <srikar@linux.vnet.ibm.com> Signed-off-by: Kirill Tkhai <ktkhai@parallels.com> CC: Konstantin Khorenko <khorenko@parallels.com> CC: Ben Segall <bsegall@google.com> CC: Paul Turner <pjt@google.com> CC: Mike Galbraith <umgwanakikbuti@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1403684388.3462.43.camel@tkhai Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/rt.c')
-rw-r--r--kernel/sched/rt.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index a49083192c64..671a8b5fdb6f 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);
}
}