Re: INFO: possible circular locking dependency atcleanup_workqueue_thread

[Oleg Nesterov]

On 05/20, Peter Zijlstra wrote:
>
> On Wed, 2009-05-20 at 15:18 +0200, Oleg Nesterov wrote:
> > On 05/20, Peter Zijlstra wrote:
> > >
> > > Breaking the setup_lock -> cpu_add_remove_lock dependency seems
> > > sufficient.
> >
> > Hmm. What do you mean? Afaics setup_lock -> cpu_add_remove_lock
> > is not a problem?
>
> >From what I could see that is the only dependency that makes
> cpu_add_remove_lock nest under "events" workqueue 'lock', which is what
> is generating the deadlock.

But cpu_add_remove_lock does not participate in this deadlock, see
http://marc.info/?l=linux-kernel&m=124274977707363 ?

Perhaps you mean something else, could you spell in that case?

Oleg.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/