linux-kernel - Re: 'global' rq->clock

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Message-Id: <20080502.150001.132956068.davem@davemloft.net>
Date:	Fri, 02 May 2008 15:00:01 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	a.p.zijlstra@...llo.nl
Cc:	guichaz@...il.com, efault@....de, elendil@...net.nl,
	parag.warudkar@...il.com, mingo@...e.hu,
	linux-kernel@...r.kernel.org, andi@...stfloor.org
Subject: Re: 'global' rq->clock

From: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Date: Fri, 02 May 2008 22:46:05 +0200

> We can toss most of this code on archs like power64, sparc64 and s390x
> which have stable clocks. It just seems wrong to do all this on these
> archs, but don't have much choice on x86.

All of this scheduler runqueue clock business is probably solving
the x86 TSC issue on the wrong level.

I suggest having a char with Andi Kleen about these issues, he's
had some good ideas in the past which were ignored for whatever
reasons...
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