linux-kernel - Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108

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Message-ID: <20060917153156.GA26209@elte.hu>
Date:	Sun, 17 Sep 2006 17:31:56 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	"Frank Ch. Eigler" <fche@...hat.com>
Cc:	Roman Zippel <zippel@...ux-m68k.org>,
	Thomas Gleixner <tglx@...utronix.de>, karim@...rsys.com,
	Andrew Morton <akpm@...l.org>,
	Paul Mundt <lethal@...ux-sh.org>, Jes Sorensen <jes@....com>,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	linux-kernel@...r.kernel.org,
	Christoph Hellwig <hch@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Tom Zanussi <zanussi@...ibm.com>, ltt-dev@...fik.org,
	Michel Dagenais <michel.dagenais@...ymtl.ca>
Subject: Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108


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

> As for Karim's proposed comment-based markers, I don't have a strong 
> opinion, not being one whose kernel-side code would be marked up one 
> way or the other. [...]

What makes the difference isnt just the format of markup (although i 
fully agree that the least visually intrusive markup format should be 
used for static markers, and the range of possibilities includes 
comment-based markers too), but what makes the differen is:

 the /guarantee/ of a full (comprehensive) set to /static tracers/

The moment we allow a static tracer into the upstream kernel, we make 
that guarantee, implicitly and explicitly. (I've expanded on this line 
of argument in the previous few mails, extensively.)

	Ingo
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