linux-kernel - Re: tracepoint maintainance models

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Message-ID: <20060918033027.GB11894@elte.hu>
Date:	Mon, 18 Sep 2006 05:30:27 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Karim Yaghmour <karim@...rsys.com>
Cc:	Nicholas Miell <nmiell@...cast.net>,
	Paul Mundt <lethal@...ux-sh.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>, Jes Sorensen <jes@....com>,
	Andrew Morton <akpm@...l.org>,
	Roman Zippel <zippel@...ux-m68k.org>,
	Tom Zanussi <zanussi@...ibm.com>,
	Richard J Moore <richardj_moore@...ibm.com>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	Michel Dagenais <michel.dagenais@...ymtl.ca>,
	Mathieu Desnoyers <mathieu.desnoyers@...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>
Subject: Re: tracepoint maintainance models


* Karim Yaghmour <karim@...rsys.com> wrote:

> > [...] if i removed a few dozen static markups with dynamic scripts 
> > (which change too would be transparent to users of dynamic tracers), 
> > that in this case users of static tracers would /not/ claim that 
> > tracing broke?

> 2- removed markups are not transparent to "static" tracers:
> 
> False. LTTng couldn't care less. [...]

Amazing! So the trace data provided by those removed static markups 
(which were moved into dynamic scripts and are thus still fully 
available to dynamic tracers) are still available to LTT users? How is 
that possible, via quantum tunneling perhaps? ;-)

	Ingo
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