Re: SwSusp to disk doesn't work - Try 2

[Thomas Meyer]

Rafael J. Wysocki schrieb:
> On Sunday, 11 March 2007 21:23, Milan Broz wrote:
>   
> > Rafael J. Wysocki:
> >     
> > > Ah, NO_HZ.  Thomas Gleixner's address added to the Cc list.
> > >
> > >       
> > > > short printk trace 
> > > >
> > > > enable_nonboot_cpus
> > > >  _cpu_up
> > > >   raw_notifier_callchain (CPU_UP_PREPARE)
> > > >     ...
> > > >     update_sched_domains
> > > >      detach_destroy_domains
> > > >        [waits here] --> synchronize_sched (==synchronize_rcu)
> > > >         
> > > Well, I think the call to wait_for_completion() does not return, probably
> > > because the task supposed to complete the completion is frozen at this
> > > point.  Can you please try to confirm that it gets stuck on
> > > wait_for_completion() in synchronize_rcu()?
> > >       
> > Yes, it's in wait_for_completion() in synchronize_rcu().
> > As noted in some previous mail, it will wake up after
> > event - key press etc.
> >
> > Patch in http://lkml.org/lkml/2007/3/7/255 solves different problem.
> > I added it to my quilt and applied anyway -> no change.
> >     
>
> Does the problem go away if NO_HZ is unset?
>   

i tried to boot with nohz=off, but the problem did persist.

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