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Date: Tue, 18 Aug 2009 12:12:18 +0800
Message-ID: <a8e1da0908172112kca79a1en7042fc1738ad1336@mail.gmail.com>
Subject: Re: -mm hang while shutdown with printk_delay
From: Dave Young <hidave.darkstar@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Tue, Aug 18, 2009 at 11:30 AM, Andrew
Morton<akpm@linux-foundation.org> wrote:
> On Tue, 18 Aug 2009 11:25:22 +0800 Dave Young <hidave.darkstar@gmail.com> wrote:
>
>> Hi,
>>
>> Test with printk_delay=200,
>>
>> /sbin/halt -p
>>
>> kernel hang after following message:
>>
>> Disabling non-boot CPUs
>>
>> There's no such problem with 2.6.31-rc6
>
> umm, OK.  But -mm contains six patches:
>
> printk-boot_delay-rename-printk_delay_msec-to-loops_per_msec.patch
> printk-boot_delay-rename-printk_delay_msec-to-loops_per_msec-fix.patch
> printk-boot_delay-rename-printk_delay_msec-to-loops_per_msec-fix-2.patch
> printk-add-printk_delay-to-make-messages-readable-for-some-scenarios.patch
> printk-add-printk_delay-to-make-messages-readable-for-some-scenarios-fix.patch
> printk-add-printk_delay-to-make-messages-readable-for-some-scenarios-cleanup.patch
>
> from yourself.  Are they the cause?
>

Actually I tested 2.6.31-rc6 with the above six patches applied,
there's no such problem.

-- 
Regards
dave