linux-kernel - Re: Unified tracing buffer

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Message-ID: <20080923050447.GG25711@one.firstfloor.org>
Date:	Tue, 23 Sep 2008 07:04:47 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Martin Bligh <mbligh@...gle.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Mathieu Desnoyers <compudj@...stal.dyndns.org>,
	Steven Rostedt <rostedt@...dmis.org>, od@...ell.com,
	"Frank Ch. Eigler" <fche@...hat.com>
Subject: Re: Unified tracing buffer

> I don't think we can remove relayfs before adding this and switching over
> the users though (possibly it could all be done at the same time, but messy)

It's only two in tree users (+ systemtap) so shouldn't be a big hazzle.
And they're all tracers so presumably they all pass time stamps. But please
don't add a multitude of new methods to do this.

BTW I've been using something like that since early 2000. It was called
ktrace and was based on a old SGI patch.

-Andi

-- 
ak@...ux.intel.com
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