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Subject: Re: [PATCH 06/32] nohz: Move idle ticks stats tracking out of nohz
 handlers
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Anton Blanchard <anton@au1.ibm.com>, Avi Kivity <avi@redhat.com>,
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        "Paul E . McKenney" <paulmck@linux.vnet.ibm.com>,
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        Stephen Hemminger <shemminger@vyatta.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Tim Pepper <lnxninja@linux.vnet.ibm.com>
Date: Mon, 29 Aug 2011 16:28:08 +0200
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On Mon, 2011-08-15 at 17:52 +0200, Frederic Weisbecker wrote:
> Idle ticks time tracking is merged into nohz stop/restart
> handlers. Pull it out into idle entry/exit handlers instead,
> so that nohz APIs is more idle independant. 

Are you trying to say:

Currently idle time tracking is part of the nohz state tracking,
separate this so that we can disable the tick while we're non-idle?

If so, how does idle time tracking work on a !NOHZ kernel, surely such
things can be idle too..