linux-kernel - Re: [Bugme-new] [Bug 12562] New: High overhead while switching or synchronizing threads on different cores

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Date:	Mon, 02 Feb 2009 09:55:20 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Mike Galbraith <efault@....de>
Cc:	Thomas Pilarski <thomas.pi@...or.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Gregory Haskins <ghaskins@...ell.com>,
	bugme-daemon@...zilla.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Bugme-new] [Bug 12562] New: High overhead while switching or
 synchronizing threads on different cores

On Mon, 2009-02-02 at 09:52 +0100, Mike Galbraith wrote:
> On Mon, 2009-02-02 at 09:33 +0100, Thomas Pilarski wrote:
> > Am Montag, den 02.02.2009, 09:19 +0100 schrieb Peter Zijlstra:
> > > I suppose you'll have to go bug the glibc people about their random()
> > > implementation.
> > 
> > Yes, I will.
> 
> Finding the below was easy enough...

Ah, that was a good clue, apparently all you need to so it use
random_r() and provide your own state and all should be well.

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