> > > There are three patches from Mike Travis that can help:
> > >
http://lkml.org/lkml/2009/1/16/377
> > >
> > > Thanks,
> > > Rafael
> >
> > Note that these don't really fix anything, just replaces the current
> > method of using set_cpus_allowed with the work_on_cpu call. If
> > the laptop worked before the [bad] patch, then it should work again
> > now with this one.
>
> Thanks for the clarification, I misread the changelogs.
>
> OK, so we still have a cpufreq vs CPU hotplug problem, it seems. I can't
> reproduce it myself, though.