summaryrefslogtreecommitdiffstats
path: root/kernel/sched/rt.c
diff options
context:
space:
mode:
authorPeter Boonstoppel <pboonstoppel@nvidia.com>2012-08-09 15:34:47 -0700
committerIngo Molnar <mingo@kernel.org>2012-09-04 14:30:30 +0200
commita4c96ae319b8047f62dedbe1eac79e321c185749 (patch)
treee93b18f6ca2d2a734962ee880d8e2cb7bd1e42b0 /kernel/sched/rt.c
parent749c8814f08f12baa4a9c2812a7c6ede7d69507d (diff)
downloadlinux-a4c96ae319b8047f62dedbe1eac79e321c185749.tar.bz2
sched: Unthrottle rt runqueues in __disable_runtime()
migrate_tasks() uses _pick_next_task_rt() to get tasks from the real-time runqueues to be migrated. When rt_rq is throttled _pick_next_task_rt() won't return anything, in which case migrate_tasks() can't move all threads over and gets stuck in an infinite loop. Instead unthrottle rt runqueues before migrating tasks. Additionally: move unthrottle_offline_cfs_rqs() to rq_offline_fair() Signed-off-by: Peter Boonstoppel <pboonstoppel@nvidia.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Turner <pjt@google.com> Link: http://lkml.kernel.org/r/5FBF8E85CA34454794F0F7ECBA79798F379D3648B7@HQMAIL04.nvidia.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/rt.c')
-rw-r--r--kernel/sched/rt.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index 944cb68420e9..e0b7ba9c040f 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -691,6 +691,7 @@ balanced:
* runtime - in which case borrowing doesn't make sense.
*/
rt_rq->rt_runtime = RUNTIME_INF;
+ rt_rq->rt_throttled = 0;
raw_spin_unlock(&rt_rq->rt_runtime_lock);
raw_spin_unlock(&rt_b->rt_runtime_lock);
}