linux-kernel - Re: [PATCH] Linux Kernel Markers

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Message-ID: <y0md59revaw.fsf@ton.toronto.redhat.com>
Date:	19 Sep 2006 11:21:43 -0400
From:	fche@...hat.com (Frank Ch. Eigler)
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
Cc:	Paul Mundt <lethal@...ux-sh.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Jes Sorensen <jes@....com>, Andrew Morton <akpm@...l.org>,
	Tom Zanussi <zanussi@...ibm.com>,
	Richard J Moore <richardj_moore@...ibm.com>,
	Michel Dagenais <michel.dagenais@...ymtl.ca>,
	Christoph Hellwig <hch@...radead.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	William Cohen <wcohen@...hat.com>,
	"Martin J. Bligh" <mbligh@...igh.org>, Ingo Molnar <mingo@...e.hu>,
	ltt-dev@...fik.org, systemtap@...rces.redhat.com
Subject: Re: [PATCH] Linux Kernel Markers


Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca> writes:

> [...]  I take for agreed that both static and dynamic tracing are
> useful for different needs and that a full markup must support both
> and combinations, letting the user or the distribution choose.

Elaborating on Ingo's "one mechanism" comments, I believe a marker
widget needs to be generic at run time.  We're not just looking for a
way of hiding direct calls to lttng in a marker macro.  We're looking
for a way of marking spots & data in a uniform way, then later
(run-time) binding each of those markers to (tools such as) lttng
and/or systemtap.

- FChE
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