Date: Fri, 25 May 2007 10:55:21 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Andi Kleen <andi@firstfloor.org>
Cc: Satyam Sharma <satyam.sharma@gmail.com>,
       Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org,
       Peter Zijlstra <a.p.zijlstra@chello.nl>, akpm@osdl.org
Subject: Re: [patch] x86_64: fix sched_clock()
Message-ID: <20070525085521.GA32044@elte.hu>
References: <20070525074316.GA16821@elte.hu> <20070525074915.GA18400@elte.hu> <20070525075446.GA20140@elte.hu> <20070525080209.GE8094@one.firstfloor.org> <20070525080415.GB21446@elte.hu> <20070525082018.GF8094@one.firstfloor.org> <20070525083430.GB27236@elte.hu> <20070525084109.GI8094@one.firstfloor.org> <20070525084426.GA29973@elte.hu> <20070525084547.GJ8094@one.firstfloor.org>
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* Andi Kleen <andi@firstfloor.org> wrote:

> > must be an -mm fix. I used -mm as a basis of my work. Please apply 
> > my patch.
> 
> I would prefer to find out why the mm patch was added and then 
> hopefully remove it.  IMNSHO it should not be needed.

it comes in via:

  fix-x86_64-mm-sched-clock-share.patch

 From: Rusty Russell <rusty@rustcorp.com.au>

 If you set tsc_disable (eg "notsc" on cmdline), sched-clock.c gives a
 divide by zero on boot.

so IMNSHO it is very much needed ;-)

	Ingo
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