linux-kernel - Re: [PATCH RFC] reduce runqueue lock contention

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Message-ID: <20100622211141.GC21149@elte.hu>
Date:	Tue, 22 Jun 2010 23:11:41 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Chris Mason <chris.mason@...cle.com>, axboe@...nel.dk,
	linux-kernel@...r.kernel.org, Mike Galbraith <efault@....de>,
	Oleg Nesterov <oleg@...hat.com>, tglx <tglx@...utronix.de>
Subject: Re: [PATCH RFC] reduce runqueue lock contention


* Peter Zijlstra <peterz@...radead.org> wrote:

> So this one boots and builds a kernel on a dual-socket nehalem.
> 
> there's still quite a number of XXXs to fix, but I don't think any of the 
> races are crashing potential, mostly wrong accounting and scheduling iffies 
> like.
> 
> But give it a go.. see what it does for you (x86 only for now).
> 
> Ingo, any comments other than, eew, scary? :-)

None, other than a question: which future kernel do you aim it for? I'd prefer 
v2.6.50 or later ;-)

This is a truly scary patch.

	Ingo
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