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? Rafael - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
