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    SubjectRe: SwSusp to disk doesn't work - Try 2
    Milan Broz schrieb:
    > 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:
    >>>
    >
    >
    > 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)
    >
    >

    Maybe this helps:

    Mar 11 20:03:56 [kernel] PM: Removing info for No Bus:msr1
    Mar 11 20:03:56 [kernel] CPU1 is down
    Mar 11 20:03:56 [kernel] swsusp debug: Waiting for 5 seconds.
    Mar 11 20:03:56 [kernel] Enabling non-boot CPUs ...
    Mar 11 20:03:56 [kernel] _cpu_up: before notifier CPU_UP_PREPARE.
    Mar 11 20:03:56 [kernel] migration_call: Hi!
    Mar 11 20:03:56 [kernel] rcu_cpu_notify: Hi!
    Mar 11 20:03:56 [kernel] timer_cpu_notify: Hi!
    Mar 11 20:03:56 [kernel] hrtimer_cpu_notify: Hi!
    Mar 11 20:03:56 [kernel] cpu_callback: Hi!
    Mar 11 20:03:56 [kernel] workqueue_cpu_callback: Hi!
    Mar 11 20:03:56 [kernel] topology_cpu_callback: Hi!

    Guess what? Hang!

    Mar 11 20:03:56 [kernel] _cpu_up: after notifier CPU_UP_PREPARE.
    Mar 11 20:03:56 [kernel] SMP alternatives: switching to SMP code
    Mar 11 20:03:56 [kernel] Booting processor 1/1 eip 3000
    Mar 11 20:03:56 [kernel] CPU 1 irqstacks, hard=c0388000 soft=c0386000
    Mar 11 20:03:56 [kernel] Initializing CPU#1


    I use NO_HZ, too. Will try without it.

    With kind regards
    thomas


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