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Date: Sun, 14 Aug 2011 12:01:24 -0500
From: Jonathan Nieder <jrnieder@gmail.com>
To: Dave Jones <davej@redhat.com>
Cc: cpufreq@vger.kernel.org, linux-kernel@vger.kernel.org,
        "Rafael J. Wysocki" <rjw@sisk.pl>,
        Mattia Dongili <malattia@debian.org>,
        Kay Sievers <kay.sievers@vrfy.org>
Subject: Re: [BUG?] Moving drivers to drivers/cpufreq/ causes all to be loaded
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(-cc: ARM/etc people; +cc: Kay)

Dave Jones wrote:

> If we have to move stuff again, we could do drivers/cpufreq/x86/ etc..

Unfortunately the old script used "find", not "ls", so that wouldn't
work. :/

> What we used to do in Fedora grew more and more complex over time.
> Here's the last incarnation: http://fpaste.org/uvDb/

The main difference from Debian seems to be that this script loads the
module corresponding to the chosen governor, while Debian's init
script loads all governor modules early (using a heuristic I would
like to avoid that involves running "find" to list them) and chooses
the governor to use later.

> In an ideal world, we'd auto-load the right module on a hotplug event
> from a cpu, but we're not there yet. I believe Kay is working on that.

Yes, that is what I was hoping for.  Are there patches to test?

The comment at
http://thread.gmane.org/gmane.linux.kernel/796450/focus=796874 also
looks promising.

Thanks much for the help,
Jonathan