Re: [2.6.33-rc5] Weird deadlock when shutting down

From: Xiaotian Feng
Date: Sun Feb 21 2010 - 05:56:01 EST


On Sun, Feb 21, 2010 at 6:43 PM, Johannes Berg
<johannes@xxxxxxxxxxxxxxxx> wrote:
> Incidentally, the machine also freezes hard without any output at all if
> I "echo 0 > /sys/.../cpu1/online".

It might be nothing related with cpufreq. I think there's something
wrong during the _cpu_down path.
put more debug printks into _cpu_down(), if we can find kernel is
stuck in which place in _cpu_down, it would be helpful.

>
> johannes
>
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