Date: Fri, 16 Aug 2013 18:49:22 +0200
From: Oleg Nesterov <oleg@redhat.com>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>, Thomas Gleixner <tglx@linutronix.de>,
        LKML <linux-kernel@vger.kernel.org>,
        Fernando Luis Vazquez Cao <fernando_b1@lab.ntt.co.jp>,
        Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
        Peter Zijlstra <peterz@infradead.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Arjan van de Ven <arjan@linux.intel.com>
Subject: Re: [PATCH 2/4] nohz: Synchronize sleep time stats with seqlock
Message-ID: <20130816164922.GA1573@redhat.com>
References: <1376667753-29014-1-git-send-email-fweisbec@gmail.com> <1376667753-29014-3-git-send-email-fweisbec@gmail.com> <20130816160201.GA31682@redhat.com> <20130816162056.GE24210@somewhere> <20130816162654.GA453@redhat.com> <20130816164626.GH24210@somewhere>
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On 08/16, Frederic Weisbecker wrote:
>
> tick_nohz_stop_idle() to iowait if we called tick_nohz_start_idle() with nr_iowait > 0.
> All we need is just a new field in ts-> that records on which state we entered
> idle.

Or we can turn ->idle_active into enum. And all other nr_iowait_cpu's
in this code should go away.

Personally I am fine either way.

Oleg.

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