linux-kernel - Re: remove cpu hotplug bustification in cpufreq.

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Message-ID: <20060723162404.GA13129@elte.hu>
Date:	Sun, 23 Jul 2006 18:24:04 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Andrew Morton <akpm@...l.org>
Cc:	Linus Torvalds <torvalds@...l.org>, davej@...hat.com,
	linux-kernel@...r.kernel.org, ashok.raj@...el.com
Subject: Re: remove cpu hotplug bustification in cpufreq.


* Andrew Morton <akpm@...l.org> wrote:

> > I'll try them out. If they don't work, we should just delete the 
> > lock and go totally back to square 1.
> 
> rwsem conversion has the potential to merely hide the problem.  Ingo, 
> does lockdep detect recursive down_read()?

yeah, it does - there are a couple of testcases for it too, in the 
testsuite.

	Ingo
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