sched: Unthrottle rt runqueues in __disable_runtime()

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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>

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This commit is contained in:

Peter Boonstoppel 2012-08-09 15:34:47 -07:00 • committed by Ingo Molnar

parent 749c8814f0

commit a4c96ae319

4 changed files with 6 additions and 6 deletions

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3

kernel/sched/core.c

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7

kernel/sched/fair.c

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1

kernel/sched/rt.c

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1

kernel/sched/sched.h

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