On Tue, 2009-04-07 at 13:56 +0930, Rusty Russell wrote:
> On Sunday 05 April 2009 23:14:54 Ingo Molnar wrote:
> >
> > * Rafael J. Wysocki <rjw@xxxxxxx> wrote:
> >
> > > On Sunday 05 April 2009, Ming Lei wrote:
> > > > kernel version : one simple usb-serial patch against commit
> > > > 6bb597507f9839b13498781e481f5458aea33620.
> > > >
> > > > Thanks.
> > >
> > > Hmm, CPU hotplug again, it seems.
> > >
> > > I'm not sure who's the maintainer at the moment. Andrew, is that
> > > Gautham?
> >
> > CPU hotplug tends to land on the scheduler people's desk normally.
> >
> > But i'm not sure that's the real thing here - key appears to be this
> > work_on_cpu() worklet by the cpufreq code:
>
> Looks like this will be fixed by Andrew's work-on-cpu-in-own-thread
> patch which I just put out the pull request for.
Would it make sense to teach it about a short-circuit like:
work_on_cpu() {
if (cpumask_weight(current->cpus_allowed) == 1 &&
smp_processor_id() == cpu)
return do_work_right_here();
queue_the_bugger();
}
?
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