aba0a372b6b4a25215547da0e291
parent 7ea56616ba6b3d67a4892728182e38ae162ea3e7
author Peter Zijlstra <a.p.zijlstra@chello.nl> 1213859217 +0200
committer Ingo Molnar <mingo@elte.hu> 1213859217 +0200

sched: rt-group: heirarchy aware throttle

The bandwidth throttle code dequeues a group when it runs out of quota, and
re-queues it once the period rolls over and the quota gets refreshed.

Sadly it failed to take the hierarchy into consideration. Share more of the
enqueue/dequeue code with regular task opterations.

Also, some operations like sched_setscheduler() can dequeue/enqueue tasks that
are in throttled runqueues, we should not inadvertly re-enqueue empty runqueues
so check for that.

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>
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