linux-kernel - Re: [PULL] cpumask tree

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Message-ID: <495F8DCA.1060905@sgi.com>
Date:	Sat, 03 Jan 2009 08:09:46 -0800
From:	Mike Travis <travis@....com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Rusty Russell <rusty@...tcorp.com.au>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PULL] cpumask tree

Ingo Molnar wrote:
> * Ingo Molnar <mingo@...e.hu> wrote:
> 
>> i suspect it's:
>>
>> | commit 2d22bd5e74519854458ad372a89006e65f45e628
>> | Author: Mike Travis <travis@....com>
>> | Date:   Wed Dec 31 18:08:46 2008 -0800
>> |
>> |     x86: cleanup remaining cpumask_t code in microcode_core.c
>>
>> as the microcode is loaded during CPU onlining.
> 
> yep, that's the bad one. Should i revert it or do you have a safe fix in 
> mind?
> 
> 	Ingo

Probably revert for now.  There are a few more following patches that also
use 'work_on_cpu' so a better (more global?) fix should be used.

Any thought on using a recursive lock for cpu-hotplug-lock?  (At least for
get_online_cpus()?)

Thanks,
Mike
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