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From: Pavel Machek <pavel@ucw.cz>
Subject: Re: [linux-pm] [PATCH 0/8] Suspend block api (version 6)
Date: Mon, 24 May 2010 23:25:11 +0200
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To: Matthew Garrett <mjg@redhat.com>
Cc: Tony Lindgren <tony@atomide.com>, Alan Stern <stern@rowland.harvard.edu>, Paul Walmsley <paul@pwsan.com>, Arve Hj?nnev?g <arve@android.com>, Linux-pm mailing list <linux-pm@lists.linux-foundation.org>, Kernel development list <linux-kernel@vger.kernel.org>, Tejun Heo <tj@kernel.org>, Oleg Nesterov <oleg@redhat.com>, Kevin Hilman <khilman@deeprootsystems.com>, magnus.damm@gmail.com, Theodore Ts'o <tytso@mit.edu>, mark gross <mgross@linux.intel.com>, Arjan van de Ven <arjan@infradead.org>, Geoff Smith <geoffx.smith@intel.com>, Brian Swetland <swetland@google.com>, "Rafael J. Wysocki" <rjw@sisk.pl>, Beno?t Cousson <b-cousson@ti.com>, linux-omap@vger.kernel.org, Vitaly Wool <vitalywool@gmail.com>, Mark Brown <broonie@opensource.wolfsonmicro.com>, Liam Girdwood <lrg@slimlogic.co.uk>

On Thu 2010-05-13 21:08:14, Matthew Garrett wrote:
> On Thu, May 13, 2010 at 01:00:04PM -0700, Tony Lindgren wrote:
> 
> > The system stays running because there's something to do. The system
> > won't suspend until all the processors hit the kernel idle loop and
> > the next_timer_interrupt_critical() returns nothing.
> 
> At which point an application in a busy loop cripples you. I think we 

Application running busy loop already cripples you, with power going
from 15W to 50W in thinkpad case. Just avoid badly written apps.

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