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