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From: Frederic Weisbecker <fweisbec@gmail.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
	Andrew Morton <akpm@linux-foundation.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Peter Zijlstra <peterz@infradead.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Theodore Tso <tytso@mit.edu>,
	Arjan van de Ven <arjan@infradead.org>,
	Mathieu Desnoyers <compudj@krystal.dyndns.org>
Subject: Re: [RFC][PATCH 0/2 v2] tracing: Add conditional to tracepoints
Date: Fri, 3 Dec 2010 15:59:53 +0100	[thread overview]
Message-ID: <20101203145950.GB1711@nowhere> (raw)
In-Reply-To: <1291387992.3228.6.camel@gandalf.stny.rr.com>

On Fri, Dec 03, 2010 at 09:53:12AM -0500, Steven Rostedt wrote:
> On Fri, 2010-12-03 at 15:47 +0100, Frederic Weisbecker wrote:
> 
> > Looks good
> > 
> > Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
> > 
> > I suspect we'll need to fix some scripts/subperf commands in perf. Those that do:
> > 
> > 	if (success)
> > 
> > tests after reading a trace from a wakeup event.
> 
> I  guess the question is, is that "success" part of the ABI or not?


The fact is: if old tools read new sched wakeup traces, the tools won't work.

Now the debate is always the same.

      reply	other threads:[~2010-12-03 14:59 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-12-03  4:03 [RFC][PATCH 0/2 v2] tracing: Add conditional to tracepoints Steven Rostedt
2010-12-03  4:03 ` [RFC][PATCH 1/2 v2] tracing: Add TRACE_EVENT_CONDITIONAL() Steven Rostedt
2010-12-03  4:54   ` Mathieu Desnoyers
2010-12-03 14:09     ` Steven Rostedt
2010-12-03 15:27       ` Mathieu Desnoyers
2010-12-03 15:38         ` Steven Rostedt
2010-12-03 15:46           ` Mathieu Desnoyers
2010-12-03  4:04 ` [RFC][PATCH 2/2 v2] tracing: Only trace sched_wakeup if it actually work something up Steven Rostedt
2010-12-08 12:12   ` Peter Zijlstra
2010-12-08 14:06     ` Steven Rostedt
2010-12-08 14:16       ` Peter Zijlstra
2010-12-03 14:47 ` [RFC][PATCH 0/2 v2] tracing: Add conditional to tracepoints Frederic Weisbecker
2010-12-03 14:53   ` Steven Rostedt
2010-12-03 14:59     ` Frederic Weisbecker [this message]

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