linux-kernel - [PATCH 0/3] Fix shutdown of cpu which having throttled rq

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Message-ID: <1403011439.27674.43.camel@tkhai>
Date:	Tue, 17 Jun 2014 17:23:59 +0400
From:	Kirill Tkhai <ktkhai@...allels.com>
To:	<linux-kernel@...r.kernel.org>
CC:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>, <tkhai@...dex.ru>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	"Mike Galbraith" <umgwanakikbuti@...il.com>,
	<khorenko@...allels.com>
Subject: [PATCH 0/3] Fix shutdown of cpu which having throttled rq

Hi,

this is a result from discussion "[PATCH 1/2] sched: Rework migrate_tasks()":

	https://lkml.org/lkml/2014/6/11/166

The problem is cfs_rq and rt_rq may stay throttled in the moment
of task migration from dead cpu. This patch fixes that for fair
and RT classes. No fix for deadline class yet, it's coming soon.

Thanks
---

Kirill Tkhai (3):
      sched/fair: Disable runtime_enabled on dying rq
      sched/rt: __disable_runtime: Enqueue just unthrottled rt_rq back on the stack
      sched: Rework check_for_tasks()


 kernel/cpu.c        |   33 ++++++++++++++++++++-------------
 kernel/sched/fair.c |   22 ++++++++++++++++++++++
 kernel/sched/rt.c   |    3 +++
 3 files changed, 45 insertions(+), 13 deletions(-)

--
Signed-off-by: Kirill Tkhai <ktkhai@...allels.com>


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