sched: rt-group: heirarchy aware throttle

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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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Peter Zijlstra 2008-06-19 09:06:57 +02:00 • committed by Ingo Molnar

parent 7ea56616ba

commit ad2a3f13b7

1 changed files with 33 additions and 26 deletions

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kernel/sched_rt.c

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