Messages in this thread | | | Date | Sun, 11 Mar 2007 21:28:16 +0100 | From | Thomas Meyer <> | Subject | Re: SwSusp to disk doesn't work - Try 2 |
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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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