linux-kernel - Re: Liunx power consumption on laptops -- Enormous progress in the last few months

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Message-ID: <20070709214650.GE29368@redhat.com>
Date:	Mon, 9 Jul 2007 17:46:50 -0400
From:	Dave Jones <davej@...hat.com>
To:	Valdis.Kletnieks@...edu
Cc:	Arjan van de Ven <arjan@...ux.intel.com>,
	Chuck Ebbert <cebbert@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: Liunx power consumption on laptops -- Enormous progress in the
	last few months

On Mon, Jul 09, 2007 at 05:42:14PM -0400, Valdis.Kletnieks@...edu wrote:
 > On Fri, 06 Jul 2007 13:02:10 EDT, Dave Jones said:
 > > On Fri, Jul 06, 2007 at 09:35:24AM -0700, Arjan van de Ven wrote:
 > > 
 > >  > > Where is the ondemand-fix.patch? I can't find any link to it.
 > >  > 
 > >  > just click on it in the graph ;_
 > >  > 
 > >  > it's also http://www.linuxpowertop.org/patches/ondemand-fix.patch 
 > >  > (which is submitted already to the maintainers)
 > > 
 > > Should be in cpufreq.git (and thus, -mm) too, waiting for .23 to open up.
 > 
 > Somebody should fix http://ww.linuxpowertop.org/known.php then, it says:
 > 
 > "The kernels ondemand CPU frequency management function currently has a
 > high-frequency timer that samples to see if the CPU is idle. Intel fixed this
 > and the patches to the kernel to effectively remove this timer are included in
 > Linus' tree as of 2.6.22-rc1."
 > 
 > which confused me no end when I was looking at this stuff and wondering why
 > it was in the -mm tree if Linus already picked it up. :)

There were two sets of fixes to ondemand.  The first round did in fact
go into .22rc1  The others I deemed too late in the cycle to go into .22
(Though they have been flawless, so if there was enough demand (ha!) we could
 even push them to -stable once they're in mainline).

	Dave

-- 
http://www.codemonkey.org.uk
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