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From: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
To: <linux-kernel@vger.kernel.org>
Cc: Fernando Luis Vazquez Cao <fernando_b1@lab.ntt.co.jp>,
	Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Arjan van de Ven <arjan@linux.intel.com>,
	Oleg Nesterov <oleg@redhat.com>
Subject: [PATCH 0/2] nohz: fix idle accounting in NO_HZ kernels
Date: Mon, 24 Mar 2014 12:05:12 +0900	[thread overview]
Message-ID: <532FA0E8.4050106@jp.fujitsu.com> (raw)

Hi all,

This patch set (based on v3.14-rc7) will fix an issue that
idle/iowait of /proc/stat can go backward. Originally reported
by Tetsuo and Fernando at last year, Mar 2013.

Reviews are welcome.

Thanks,
H.Seto


Hidetoshi Seto (2):
      nohz: use seqlock to avoid race on idle time stats
      nohz, procfs: introduce get_cpu_idle/iowait_time_coarse

 fs/proc/stat.c           |   16 ++---
 include/linux/tick.h     |    5 ++
 kernel/time/tick-sched.c |  171 ++++++++++++++++++++++++++++++++++++++++------
 3 files changed, 161 insertions(+), 31 deletions(-)


             reply	other threads:[~2014-03-24  3:07 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-24  3:05 Hidetoshi Seto [this message]
2014-03-24  3:10 ` [PATCH 1/2] nohz: use seqlock to avoid race on idle time stats Hidetoshi Seto
2014-03-24  7:45   ` Preeti Murthy
2014-03-24  8:21     ` Hidetoshi Seto
2014-03-25  5:27       ` Preeti U Murthy
2014-03-24  3:10 ` [PATCH 2/2] nohz, procfs: introduce get_cpu_idle/iowait_time_coarse Hidetoshi Seto

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