Re: Re: freeze_processes questions

Pavel Machek
2005-04-28T08:15:44Z

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Hi!
> > > Do you have a particular example in mind? I haven't seen or heard of
> > > any
> > > freezing failures in Suspend2 for ages, so I'm struggling to see what
> > > is
> > > lacking.
> > No, actually. Maybe I should send the proposal till I really find a case
> > :). I only noticed the syslogd case. Somebody reported the
> > 'mdnsresponder' process case, but didn't look at it yet.
> > http://bugme.osdl.org/show_bug.cgi?id=3964
>
> Ah. Ok. The ipw2100 driver starts a workqueue. Since I also have patches
> to make kthreads freezable, we sometimes have to tell people to add an
> extra parameter to the create_workqueue call. Once that's done, I
> believe it all works fine.
>
> I keep saying I must seek to merge these patches. I've gotten caught up
> on trying to get everything ready to merge at once, and confused by what
> Pavel is and isn't changing :> Pavel, since you're cc'd I might as well
> ask, am I still right to submit those patches again? If so, I'll try to
> do it this evening.

Yes, I'd like those patches...

> On a related topic, I've tried to get hotplug cpu support working with
> suspending, but it looks like more is needed. In particular, the 'dead'
> cpu still needs state saved and restored, so we're not really gaining
> anything with the current implementation. If hotplug really killed the
> CPU and rebooted it, the story might be different.

It works for me, but you need to play with -mm kernel where neccessary
support is implemented...
Pavel
--
Boycott Kodak -- for their patent abuse against Java.