linux-kernel - [PATCH v3 0/2] sched: fix nr_busy

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Message-Id: <1360346718-3313-1-git-send-email-vincent.guittot@linaro.org>
Date:	Fri,  8 Feb 2013 19:05:16 +0100
From:	Vincent Guittot <vincent.guittot@...aro.org>
To:	linux-kernel@...r.kernel.org, linaro-dev@...ts.linaro.org,
	peterz@...radead.org, mingo@...nel.org, fweisbec@...il.com,
	rostedt@...dmis.org, efault@....de
Cc:	Vincent Guittot <vincent.guittot@...aro.org>
Subject: [PATCH v3 0/2] sched: fix nr_busy_cpus

The nr_busy_cpus field of the sched_group_power is sometime different from 0
whereas the platform is fully idle. This serie fixes 3 use cases:
 - when some CPUs enter idle state while booting all CPUs
 - when a CPU is unplug and/or replug

Change since V2:
 - change the initialization to idle state instead of busy state so a CPU that
   enters idle during the build of the sched_domain will not corrupt the
   initialization state

Change since V1:
 - remove the patch for SCHED softirq on an idle core use case as it was
   a side effect of the other use cases.

Vincent Guittot (2):
  sched: fix init NOHZ_IDLE flag
  sched: fix update NOHZ_IDLE flag

 kernel/sched/core.c |    4 +++-
 kernel/sched/fair.c |    2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

-- 
1.7.9.5

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