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Subject: Re: [PATCH 07/32] cpuset: Set up interface for nohz flag
From: Mike Galbraith <efault@gmx.de>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Christoph Lameter <cl@linux.com>, LKML <linux-kernel@vger.kernel.org>,
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Date: Tue, 27 Mar 2012 14:31:06 +0200
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On Tue, 2012-03-27 at 13:56 +0200, Frederic Weisbecker wrote: 
> Ok but there is a difference between idle nohz and busy nohz.
> Idle nohz may let the CPU enter into low power mode. busy nohz
> (implemented by this patchset) doesn't because it stops the tick
> when the CPU runs.

Yeah.  Your set is tagged important here (stare at, and play with;).

-Mike