linux-kernel - Re: [ANNOUNCE] New utility: 'trace'

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Message-ID: <1290001128.2109.785.camel@laptop>
Date:	Wed, 17 Nov 2010 14:38:48 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Ted Ts'o <tytso@....edu>, Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Tom Zanussi <tzanussi@...il.com>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Li Zefan <lizf@...fujitsu.com>,
	Jason Baron <jbaron@...hat.com>,
	"David S. Miller" <davem@...emloft.net>,
	Christoph Hellwig <hch@....de>,
	Pekka Enberg <penberg@...nel.org>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [ANNOUNCE] New utility: 'trace'

On Wed, 2010-11-17 at 14:24 +0100, Ingo Molnar wrote:
> > What about the filtering and other general features/functionality of
> > ftrace?  Is the anticipation that this will be ported over to perf?
> > What about things like blktrace?
> 
> Yeah, i'd love to see all that available. Filtering is available already on the 
> kernel perf event side and could be added as an option. 

Except I utterly detest the existing filter code.. it runs _after_ we do
all the hard work and then makes us roll back when it decides we
shouldn't output after all.

But yes, it is functional.
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