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Message-Id: <1235150992.6467.66.camel@quest>
Date: Fri, 20 Feb 2009 17:29:52 +0000
From: Scott James Remnant <scott@...onical.com>
To: Matthew Garrett <mjg59@...f.ucam.org>
Cc: Ingo Molnar <mingo@...e.hu>, davej@...emonkey.org.uk,
linux-kernel@...r.kernel.org, cpufreq@...r.kernel.org
Subject: Re: [PATCH] cpufreq: Change link order of x86 cpufreq modules
On Wed, 2009-02-18 at 18:36 +0000, Matthew Garrett wrote:
> On Wed, Feb 18, 2009 at 07:31:37PM +0100, Ingo Molnar wrote:
>
> > Nice fix! Where does this information come from? Distro module
> > ordering magic? It's rather non-trivial.
>
> Pretty much. p4-clockmod is never the preferred option because it does
> no voltage scaling. speedstep-centrino is now almost entirely
> functionally replaced with acpi-cpufreq. The powernow-k8 issue was a
> personal communication from davej.
>
In fact, we've noticed severe regressions with p4-clockmod over simply
having no scaling driver at all - and are not going to built it into our
kernels.
Scott
--
Scott James Remnant
scott@...onical.com
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