linux-kernel - Re: [PATCH] tracing/markers: make markers select tracepoints

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Message-ID: <20090223172302.GB29344@elte.hu>
Date:	Mon, 23 Feb 2009 18:23:02 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	"Frank Ch. Eigler" <fche@...hat.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	linux-kernel@...r.kernel.org, zippel@...ux-m68k.org,
	linux-kbuild@...r.kernel.org
Subject: Re: [PATCH] tracing/markers: make markers select tracepoints


* Frank Ch. Eigler <fche@...hat.com> wrote:

> > Furthermore, trace_mark() exposes that crap like an ABI, now 
> > suppose some distro goes and declares that stable for some 
> > daft reason, imagine the poor sod having to fix something 
> > littered with trace_mark().
> 
> The impression that this is somehow different with tracepoints 
> is mistaken.  Tracepoints are *exactly* as "ABI-like" as 
> markers.

they arent. To the kernel they look like function calls, with no 
ABI properties at all. They can and will change without notice.

	Ingo
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