linux-kernel - Re: [PATCH 6/6] Makes procs file writable to move all threads by tgid at once

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Message-Id: <1249554853.32113.145.camel@twins>
Date:	Thu, 06 Aug 2009 12:34:13 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Paul Menage <menage@...gle.com>
Cc:	Benjamin Blum <bblum@...gle.com>,
	containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH 6/6] Makes procs file writable to move all threads by
 tgid  at once

On Thu, 2009-08-06 at 03:28 -0700, Paul Menage wrote:

> OK, well if lockdep can't currently handle the "writer takes a lock on
> every thread" model,

I haven't read what this is about, but simply looking at that sentence
makes me want to hit someone with a cluebat. Have you any idea how
expensive that is?



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