Messages in this thread | | | Date | Sun, 11 Mar 2007 22:02:55 +0100 | From | Thomas Meyer <> | Subject | Re: SwSusp to disk doesn't work - Try 2 |
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Milan Broz schrieb: > Thomas Meyer napsal(a): > >> 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. >> > > Hmmmm, both variants (nohz=off or recompiled kernel without NO_HZ) works for me. > > Milan >
I got a working config:
Without hrtimers and without nohz it is working!
With hrtimers and without nohz it is not working With hrtimers and with nohz it is not working
Now i want to test: without hrtimers and with nohz.
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