linux-kernel - Re: [RFC][PATCH] convert block trace points to TRACE

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Message-ID: <20090524085701.GA4302@infradead.org>
Date:	Sun, 24 May 2009 04:57:01 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	Christoph Hellwig <hch@...radead.org>,
	Li Zefan <lizf@...fujitsu.com>, Jeff Moyer <jmoyer@...hat.com>,
	Ingo Molnar <mingo@...e.hu>,
	Jens Axboe <jens.axboe@...cle.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Tom Zanussi <tzanussi@...il.com>,
	Theodore Ts'o <tytso@....edu>,
	Steven Whitehouse <swhiteho@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC][PATCH] convert block trace points to TRACE_EVENT()

On Sun, May 24, 2009 at 02:15:05PM +0900, KOSAKI Motohiro wrote:
> > Is there any good reason for keeping the ftrace plugin once we have
> > the fully function event tracer support for the block events?
> 
> waiting userland blktrace tool convert using event tracer? 

blktrace(8) uses the ioctl interface, which we should keep for a long
time for backwards compatiblity.  

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