From: Frederic Weisbecker <fweisbec@gmail.com>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Renninger <trenn@suse.de>,
tardyp@gmail.com, jean.pihet@newoldbits.com,
acme@ghostprotocols.net, linux-perf-users@vger.kernel.org,
mathieu.desnoyers@efficios.com,
linux-trace-users@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>,
Steven Rostedt <rostedt@goodmis.org>, Ingo Molnar <mingo@elte.hu>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: Perf ABI versioning
Date: Mon, 24 Jan 2011 21:40:44 +0100 [thread overview]
Message-ID: <20110124204042.GD2318@nowhere> (raw)
In-Reply-To: <1295901543.28776.475.camel@laptop>
On Mon, Jan 24, 2011 at 09:39:03PM +0100, Peter Zijlstra wrote:
> On Mon, 2011-01-24 at 21:34 +0100, Frederic Weisbecker wrote:
> >
> > But instead of a global tracing ABI number, I would rather suggest
> > one number per tracepoint subsystem (sched, power, etc...).
> >
> > Ideally it would be per event, but sometimes those events tend to be
> > renamed or a whole tracepoint subsystem refactored (see workqueue
> > lately). Hence it might be better per subsystem.
>
> What's wrong with what we have? the /format file is pretty unique to
> function as a version number of you use a hash over it.
Yeah we could in fact use it to find if fields have been added,
removed. Right, all in one that looks enough to me.
next prev parent reply other threads:[~2011-01-24 20:40 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-24 16:04 Perf ABI versioning Thomas Renninger
2011-01-24 16:18 ` Thomas Renninger
2011-01-24 17:26 ` Pierre Tardy
2011-01-24 17:28 ` Jean Pihet
2011-01-24 20:05 ` Frederic Weisbecker
2011-01-24 20:12 ` Mathieu Desnoyers
2011-01-24 21:02 ` Thomas Renninger
2011-01-24 20:34 ` Frederic Weisbecker
2011-01-24 20:39 ` Peter Zijlstra
2011-01-24 20:40 ` Frederic Weisbecker [this message]
2011-01-24 21:28 ` Ingo Molnar
2011-01-24 21:49 ` Thomas Renninger
2011-01-24 21:57 ` Arnaldo Carvalho de Melo
2011-01-24 22:30 ` Thomas Renninger
2011-01-24 22:46 ` Frederic Weisbecker
2011-01-24 23:05 ` Arnaldo Carvalho de Melo
2011-01-24 21:59 ` Frederic Weisbecker
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