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Date: Tue, 15 Apr 2014 12:11:41 +0900
From: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
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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>,
	Preeti U Murthy <preeti@linux.vnet.ibm.com>,
	Denys Vlasenko <vda.linux@googlemail.com>,
	stable@vger.kernel.org
Subject: Re: [PATCH v3 0/2] nohz: fix idle accounting in NO_HZ kernels
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(2014/04/10 18:07), Hidetoshi Seto wrote:
> Hi all,
> 
> This patch set (rebased on v3.14) is my 3rd try to fix an issue
> that idle/iowait of /proc/stat can go backward. Originally reported
> by Tetsuo and Fernando at last year, Mar 2013.
> 
> This v3 takes new approach to fix the problem, and now use seqcount
> while v1 and v2 uses seqlock.
> 
> Of course still reviews are welcome!
> 
> Thanks,
> H.Seto
> 
> Hidetoshi Seto (2):
>       nohz: stop updating sleep stats from get_cpu_{idle,iowait}_time_us()
>       nohz: use delayed iowait accounting to avoid race on idle time stats
> 
>  include/linux/tick.h     |    6 ++-
>  kernel/time/tick-sched.c |  116 ++++++++++++++++++++++++++++------------------
>  2 files changed, 74 insertions(+), 48 deletions(-)