linux-kernel - Re: [patch] x86_64: fix sched

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Message-ID: <20070525083430.GB27236@elte.hu>
Date:	Fri, 25 May 2007 10:34:31 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Satyam Sharma <satyam.sharma@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [patch] x86_64: fix sched_clock()


* Andi Kleen <andi@...stfloor.org> wrote:

> > > Hmm indeed. I actually had it correct at some point (i remember 
> > > fixing 64bit compile errors in sched-clock ;-). I guess the 
> > > Makefile hunk accidentially dropped out during some later merging 
> > > and this didn't get noticed due to the weak attribute.
> > 
> > well the tsc.h bit was needed too.
> 
> It's not in defconfig at least. I just tried it.

what do you mean? The tsc.h bit is needed because 
arch/i386/kernel/sched-clock.c (now built on x86_64 too with the patch i 
sent) uses the tsc_disable global flag which is non-existent on x86_64. 
So my tsc.h change adds that global flag, always-defined to 0.

	Ingo
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