linux-kernel - Re: How to use a different sched

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Message-ID: <20090507085116.GC19133@elte.hu>
Date:	Thu, 7 May 2009 10:51:16 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Tim Bird <tim.bird@...sony.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	linux kernel <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.arm.linux.org.uk>
Subject: Re: How to use a different sched_clock() for ftrace on omap?


* Tim Bird <tim.bird@...sony.com> wrote:

> Hi all,
> 
> I've worked up a replacement sched_clock for ftrace on my omap 
> platform. The current sched_clock, based on the 32K timer, has low 
> resolution and doesn't provide very useful results.

hm, why dont you replace the real sched_clock() with it? High 
resolution sched_clock() gives (much!) better scheduling, better 
fairness, etc.

	Ingo
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