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authorPaul Turner <pjt@google.com>2011-07-21 09:43:34 -0700
committerIngo Molnar <mingo@elte.hu>2011-08-14 12:03:36 +0200
commit671fd9dabe5239ad218c7eb48b2b9edee50250e6 (patch)
tree351f59453eb699661bd811210f24d8b7fd554ca4 /kernel/sched.c
parent85dac906bec3bb41bfaa7ccaa65c4706de5cfdf8 (diff)
downloadlinux-671fd9dabe5239ad218c7eb48b2b9edee50250e6.tar.bz2
sched: Add support for unthrottling group entities
At the start of each period we refresh the global bandwidth pool. At this time we must also unthrottle any cfs_rq entities who are now within bandwidth once more (as quota permits). Unthrottled entities have their corresponding cfs_rq->throttled flag cleared and their entities re-enqueued. Signed-off-by: Paul Turner <pjt@google.com> Reviewed-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20110721184757.574628950@google.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched.c')
-rw-r--r--kernel/sched.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 044260a9418d..4bbabc2c4a77 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -9192,6 +9192,9 @@ static int tg_set_cfs_bandwidth(struct task_group *tg, u64 period, u64 quota)
raw_spin_lock_irq(&rq->lock);
cfs_rq->runtime_enabled = runtime_enabled;
cfs_rq->runtime_remaining = 0;
+
+ if (cfs_rq_throttled(cfs_rq))
+ unthrottle_cfs_rq(cfs_rq);
raw_spin_unlock_irq(&rq->lock);
}
out_unlock: