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SubjectRe: SwSusp to disk doesn't work - Try 2
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.

Milan

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