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SubjectRe: SwSusp to disk doesn't work - Try 2
Rafael J. Wysocki napsal(a):
> On Sunday, 11 March 2007 19:08, Thomas Meyer wrote:
>> Suspend to disk doesn't work on my laptop.
>> The suspend seems to hang while enabling the non-boot cpus again.
>> with platform = "test" and state = "disk" i get this:

>> Enabling non-boot CPUs ...
> Could you please put some printk()s in kernel/cpu.c:_cpu_up() to see where
> it gets stuck? I bet one of the notifiers goes to sleep (cpufreq, maybe).

I see the same problem - 2.6.21-rc3 with NO_HZ set (tickless),
short printk trace

raw_notifier_callchain (CPU_UP_PREPARE)
[waits here] --> synchronize_sched (==synchronize_rcu)


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