Message-ID: <52123D57.40704@linux.intel.com>
Date: Mon, 19 Aug 2013 08:44:23 -0700
From: Arjan van de Ven <arjan@linux.intel.com>
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To: Peter Zijlstra <peterz@infradead.org>
CC: Frederic Weisbecker <fweisbec@gmail.com>, Oleg Nesterov <oleg@redhat.com>,
        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>,
        Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 2/4] nohz: Synchronize sleep time stats with seqlock
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> <20130816164922.GA1573@redhat.com> <20130816171208.GJ24210@somewhere> <20130819105817.GD24092@twins.programming.kicks-ass.net>
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On 8/19/2013 3:58 AM, Peter Zijlstra wrote:
> I'm also not entirely clear on the 'desired' semantics here. Do we count
> iowait time as idle or not?

cpufreq only looks at this because it does not want to count this as idle...
other than that it could not care less.

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