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Message-ID: <1326386087.7642.92.camel@gandalf.stny.rr.com>
Subject: Re: [lttng-dev] Perf ABI (was: Re: [PATCH 09/11] sched: export
 task_prio to GPL modules)
From: Steven Rostedt <rostedt@goodmis.org>
To: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: devel@driverdev.osuosl.org, "Ted Ts'o" <tytso@mit.edu>,
        Peter Zijlstra <peterz@infradead.org>, Greg KH <greg@kroah.com>,
        linux-kernel@vger.kernel.org,
        Arnaldo Carvalho de Melo <acme@redhat.com>, lttng-dev@lists.lttng.org,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andrew Morton <akpm@linux-foundation.org>
Date: Thu, 12 Jan 2012 11:34:47 -0500
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On Thu, 2012-01-12 at 11:27 -0500, Mathieu Desnoyers wrote:

> > What udev did is more like what you want to do than what I did with
> > trace-cmd.
> 
> OK. Then how can trace-cmd support the LTTng features ?

New syscalls, or new files, and simply check if they exist.

New features should not break old ones.

-- Steve