linux-kernel - Re: [PATCH tip 1/3] trace: better manage the context info for events

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Message-ID: <20090203131508.GD17781@ghostprotocols.net>
Date:	Tue, 3 Feb 2009 11:15:08 -0200
From:	Arnaldo Carvalho de Melo <acme@...hat.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	Jens Axboe <jens.axboe@...cle.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH tip 1/3] trace: better manage the context info for
	events

Em Mon, Feb 02, 2009 at 09:32:51PM -0500, Steven Rostedt escreveu:
> On Tue, 3 Feb 2009, Frederic Weisbecker wrote:
> > Now that I see the practical case, I'm not sure the design of my patch was valuable.
> > A tracer has to play with the flag if it wants to override the context info in
> > the bin/raw/hex cases. And I don't think this is a good way to proceed.
> > 
> > In my opinion, the ITER_CONTEXT_INFO flag should mostly be set by the user.
> 
> I think it should _only_ be set by user.

So we need a trace_event->binary_and_I_mean_it() callback that even if
the user wants, doesn't prints an ascii formatted context, as, for
tracers such as blkftrace, the binary trace has the context... in binary
:-)

- Arnaldo
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