linux-kernel - Re: [PATCH 03/10][RFC] tracing: Convert TRACE_EVENT() to use the DECLARE_TRACE

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Date:	Wed, 28 Apr 2010 19:57:57 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Mathieu Desnoyers <compudj@...stal.dyndns.org>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	Li Zefan <lizf@...fujitsu.com>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	Christoph Hellwig <hch@....de>
Subject: Re: [PATCH 03/10][RFC] tracing: Convert TRACE_EVENT() to use the
 DECLARE_TRACE_DATA()

On Wed, 2010-04-28 at 16:39 -0400, Mathieu Desnoyers wrote:
> * Steven Rostedt (rostedt@...dmis.org) wrote:
> > From: Steven Rostedt <srostedt@...hat.com>
> > 
> > Switch the TRACE_EVENT() macros to use DECLARE_TRACE_DATA(). This
> > patch is done to prove that the DATA macros work. If any regressions
> > were to surface, then this patch would help a git bisect to localize
> > the area.
> > 
> > Once again this patch increases the size of the kernel.
> > 
> 
> As recommended in the earlier email:
> 
> It would make sense to just add the extra "callback_data" argument
> directly to DECLARE_TRACE(), modify the user (TRACE_EVENT) accordingly.
> And possibly create a TRACE_EVENT_NOARG() variant.

Are you suggesting to make DECLARE_TRACE() be...

#define DECLARE_TRACE(name, proto, args, data)

?

-- Steve


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