From: Andi Kleen <ak@suse.de>
To: Daniel Walker <dwalker@mvista.com>
Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
johnstul@us.ibm.com, mingo@elte.hu, Jiri Bohac <jbohac@suse.cz>
Subject: Re: [PATCH 2/2] i386: sched_clock() follows percpu frequency changes
Date: Sat, 12 May 2007 20:58:35 +0200 [thread overview]
Message-ID: <200705122058.35387.ak@suse.de> (raw)
In-Reply-To: <20070512154408.223236808@mvista.com>
On Saturday 12 May 2007 17:43:46 Daniel Walker wrote:
> Considering that Andi has a similar patch, I'm going to assume there
> is already justification for this..
I just have a patch for sched_clock, which is somewhat different.
> What it ends up doing is allows the TSC to be used in cases which
> we didn't use it before, and hope it's still mostly accurate.
Yes the current code is badly broken in this regard. e.g. i always
hated that it always falls back on powernow systems.
Jiri will hopefully repost his true per CPU TSC patch soon, that should
make it all obsolete.
-Andi
next prev parent reply other threads:[~2007-05-12 18:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-12 15:43 [PATCH 1/2] non-string based tsc unstable reasons Daniel Walker
2007-05-12 15:43 ` [PATCH 2/2] i386: sched_clock() follows percpu frequency changes Daniel Walker
2007-05-12 18:58 ` Andi Kleen [this message]
2007-05-12 19:25 ` Daniel Walker
2007-05-12 18:56 ` [PATCH 1/2] non-string based tsc unstable reasons Andi Kleen
2007-05-12 19:10 ` Daniel Walker
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