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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).

    Hi,
    I see the same problem - 2.6.21-rc3 with NO_HZ set (tickless),
    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)


    Milan


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