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

[Xiaotian Feng]

On Sun, Feb 21, 2010 at 6:55 PM, Xiaotian Feng <xtfeng@xxxxxxxxx> wrote:
> 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.

and it looks like this breakage is only seen on powerMac G5, so it
might be arch specific. Maybe some commit in powermac breaks G5's
cpu_down, just a guess ;-)

>
>>
>> johannes
>>
>
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