From: Xiaotian Feng <xtfeng@gmail.com>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: "Américo Wang" <xiyou.wangcong@gmail.com>,
"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: Sun, 21 Feb 2010 19:12:46 +0800 [thread overview]
Message-ID: <7b6bb4a51002210312o2a1d070aneb54c107aeab6952@mail.gmail.com> (raw)
In-Reply-To: <7b6bb4a51002210255t5ceaeb84r1438461085446385@mail.gmail.com>
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 ;-)
>
>>
>> johannes
>>
>
next prev parent reply other threads:[~2010-02-21 11:12 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 [this message]
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
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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