powernowd vs. ondemand governor

Steve Langasek steve.langasek at ubuntu.com
Tue Feb 17 18:40:22 GMT 2009

On Tue, Feb 17, 2009 at 04:58:32PM +0000, Scott James Remnant wrote:
> On Tue, 2009-02-17 at 16:45 +0000, Matt Zimmerman wrote:

> > > Furthermore, my understanding is that even if udev could autoload the
> > > modules, there's no way to set a policy for which governor to use without
> > > running a script exactly like the current powernowd init script.

> > Yes, we might need to provide some method to override it, but
> > CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND would take care of the default.

> I think you're both confusing the governor and the mechanism.

Hmm, you're right.  I looked more closely at this system, and because none
of the hardware mechanisms work,
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors is absent
regardless of which governors are loaded by the kernel.

So I guess I don't have a use case for powernowd, here.

Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
Ubuntu Developer                                    http://www.debian.org/
slangasek at ubuntu.com                                     vorlon at debian.org

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