linux-kernel - Re: [PATCH 1/2 v2] tracing/ftrace: handle more than one stat file per tracer

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Date:	Thu, 8 Jan 2009 09:58:18 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH 1/2 v2] tracing/ftrace: handle more than one stat file
	per tracer

On Wed, Jan 07, 2009 at 10:50:35PM -0500, Steven Rostedt wrote:
> 
> On Wed, 7 Jan 2009, Frederic Weisbecker wrote:
> 
> > Impact: new API for tracers
> > 
> > Make the stat tracing API reentrant. And also provide the new directory
> > /debugfs/tracing/trace_stat which will contain all the stat files for the
> > current active tracer.
> > 
> > Now a tracer will, if desired, want to provide a zero terminated array of
> > tracer_stat structures.
> > Each one contains the callbacks necessary for one stat file.
> > It have to provide at least a name for its stat file, an iterator with
> > stat_start/start_next callback and an output callback for one stat entry.
> > 
> > Changes in v2:
> > 
> 
> Hi Frederic,
> 
> This patch fails to compile the branch tracer by itself. No patch should 
> break a build (for bisecting reasons).
> 
> -- Steve
>

Hmm. Yes, so perhaps I can resend the two patches in one?

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