RE: [PATCH 4/6] x86/cpufreq: use cpumask_copy instead of =

Langsdorf, Mark
2009-09-21T16:45:10Z

> On Thu, 11 Jun 2009 05:12:16 am Langsdorf, Mark wrote:
> > > powernow_k8_target is problematic: it grabs a mutex. cpufreq
> > > people, is this called often?
> >
> > Yes. It's the function that makes a frequency change
> > happen, so 5+ times per second per core isn't
> > unreasonable.
>
> Right, so we need to revisit this. I'll leave it for the
> moment and put it on my TODO list.

Rusty -

Did you ever get any ideas on a solution to this? I'm
getting reports that the set_cpus_allowed_ptr() in
powernow_k8_target() is breaking with changeset
ebc79c4f8da0f92efa968e0328f32334a2ce80cf . I haven't
changed the powernow_k8 code, so I suspect something
happened to set_cpus_allowed_ptr().

-Mark Langsdorf
Operating System Research Center
AMD