linux-kernel - Re: [linux-pm] [PATCH 0/8] Suspend block api (version 6)

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Message-ID: <20100524212511.GC1286@ucw.cz>
Date:	Mon, 24 May 2010 23:25:11 +0200
From:	Pavel Machek <pavel@....cz>
To:	Matthew Garrett <mjg@...hat.com>
Cc:	Tony Lindgren <tony@...mide.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Paul Walmsley <paul@...an.com>,
	Arve Hj?nnev?g <arve@...roid.com>,
	Linux-pm mailing list <linux-pm@...ts.linux-foundation.org>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	Tejun Heo <tj@...nel.org>, Oleg Nesterov <oleg@...hat.com>,
	Kevin Hilman <khilman@...prootsystems.com>,
	magnus.damm@...il.com, Theodore Ts'o <tytso@....edu>,
	mark gross <mgross@...ux.intel.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Geoff Smith <geoffx.smith@...el.com>,
	Brian Swetland <swetland@...gle.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Beno?t Cousson <b-cousson@...com>, linux-omap@...r.kernel.org,
	Vitaly Wool <vitalywool@...il.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...mlogic.co.uk>
Subject: Re: [linux-pm] [PATCH 0/8] Suspend block api (version 6)

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.

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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