From: "Américo Wang" <xiyou.wangcong@gmail.com>
To: Xiaotian Feng <xtfeng@gmail.com>
Cc: Johannes Berg <johannes@sipsolutions.net>,
Linus Torvalds <torvalds@linux-foundation.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: [2.6.33-rc5] Weird deadlock when shutting down
Date: Mon, 22 Feb 2010 16:22:58 +0800 [thread overview]
Message-ID: <2375c9f91002220022r63d209d0w2c0137bc1c2d2ec1@mail.gmail.com> (raw)
In-Reply-To: <7b6bb4a51002210312o2a1d070aneb54c107aeab6952@mail.gmail.com>
On Sun, Feb 21, 2010 at 7:12 PM, Xiaotian Feng <xtfeng@gmail.com> wrote:
> On Sun, Feb 21, 2010 at 6:55 PM, Xiaotian Feng <xtfeng@gmail.com> wrote:
>> On Sun, Feb 21, 2010 at 6:43 PM, Johannes Berg
>> <johannes@sipsolutions.net> 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 ;-)
>
Maybe not, there could be some generic code bug that will only be
exposed on a specific arch.
Thanks.
next prev parent reply other threads:[~2010-02-22 8:23 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-29 4:41 Benjamin Herrenschmidt
2010-02-18 9:36 ` Johannes Berg
2010-02-18 16:31 ` Linus Torvalds
2010-02-18 18:45 ` Johannes Berg
2010-02-20 7:13 ` Américo Wang
2010-02-20 8:56 ` Johannes Berg
2010-02-20 9:06 ` Américo Wang
2010-02-20 10:53 ` Johannes Berg
2010-02-20 11:28 ` Johannes Berg
2010-02-20 12:07 ` Johannes Berg
2010-02-20 13:44 ` Américo Wang
2010-02-20 13:57 ` Johannes Berg
2010-02-21 9:51 ` Américo Wang
2010-02-21 10:17 ` Johannes Berg
2010-02-22 8:19 ` Américo Wang
2010-02-22 8:39 ` Johannes Berg
2010-02-21 10:43 ` Johannes Berg
2010-02-21 10:55 ` Xiaotian Feng
2010-02-21 11:12 ` Xiaotian Feng
2010-02-21 11:14 ` Johannes Berg
2010-02-21 11:22 ` Johannes Berg
2010-02-22 8:34 ` Américo Wang
2010-02-22 9:04 ` Johannes Berg
2010-02-22 9:12 ` Américo Wang
2010-02-22 9:14 ` Johannes Berg
2010-02-22 9:21 ` Américo Wang
2010-02-22 8:22 ` Américo Wang [this message]
2010-02-20 7:42 ` Dave Young
2010-02-20 8:46 ` Johannes Berg
2010-02-20 4:46 ` Américo Wang
2010-02-20 8:45 ` Johannes Berg
2010-02-20 9:30 ` Américo Wang
2010-02-20 10:52 ` Johannes Berg
2010-03-25 11:28 ` David Howells
2010-03-26 2:43 ` Américo Wang
2010-03-26 12:22 ` David Howells
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