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Date: Sat, 5 Jul 2014 03:46:12 -0700 From: tip-bot for Kirill Tkhai <tipbot@...or.com> To: linux-tip-commits@...r.kernel.org Cc: linux-kernel@...r.kernel.org, bsegall@...gle.com, ktkhai@...allels.com, hpa@...or.com, mingo@...nel.org, torvalds@...ux-foundation.org, peterz@...radead.org, pjt@...gle.com, umgwanakikbuti@...il.com, khorenko@...allels.com, srikar@...ux.vnet.ibm.com, tglx@...utronix.de Subject: [tip:sched/core] sched/rt: Enqueue just unthrottled rt_rq back on the stack in __disable_runtime() Commit-ID: 99b625670f1447ecf0739161efbe7f2f43c0e0b6 Gitweb: http://git.kernel.org/tip/99b625670f1447ecf0739161efbe7f2f43c0e0b6 Author: Kirill Tkhai <ktkhai@...allels.com> AuthorDate: Wed, 25 Jun 2014 12:19:48 +0400 Committer: Ingo Molnar <mingo@...nel.org> CommitDate: Sat, 5 Jul 2014 11:17:44 +0200 sched/rt: Enqueue just unthrottled rt_rq back on the stack in __disable_runtime() Make rt_rq available for pick_next_task(). Otherwise, their tasks stay prisoned long time till dead cpu becomes alive again. Reviewed-by: Srikar Dronamraju <srikar@...ux.vnet.ibm.com> Signed-off-by: Kirill Tkhai <ktkhai@...allels.com> CC: Konstantin Khorenko <khorenko@...allels.com> CC: Ben Segall <bsegall@...gle.com> CC: Paul Turner <pjt@...gle.com> CC: Mike Galbraith <umgwanakikbuti@...il.com> Cc: Linus Torvalds <torvalds@...ux-foundation.org> Signed-off-by: Peter Zijlstra <peterz@...radead.org> Link: http://lkml.kernel.org/r/1403684388.3462.43.camel@tkhai Signed-off-by: Ingo Molnar <mingo@...nel.org> --- kernel/sched/rt.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c index a490831..671a8b5 100644 --- a/kernel/sched/rt.c +++ b/kernel/sched/rt.c @@ -740,6 +740,9 @@ balanced: rt_rq->rt_throttled = 0; raw_spin_unlock(&rt_rq->rt_runtime_lock); raw_spin_unlock(&rt_b->rt_runtime_lock); + + /* Make rt_rq available for pick_next_task() */ + sched_rt_rq_enqueue(rt_rq); } } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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