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

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Message-ID: <20060914112718.GA7065@elte.hu>
Date:	Thu, 14 Sep 2006 13:27:18 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
Cc:	linux-kernel@...r.kernel.org,
	Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@...l.org>, Ingo Molnar <mingo@...hat.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Thomas Gleixner <tglx@...utronix.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


* Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca> wrote:

> Following an advice Christoph gave me this summer, submitting a 
> smaller, easier to review patch should make everybody happier. Here is 
> a stripped down version of LTTng : I removed everything that would 
> make the code review reluctant (especially kernel instrumentation and 
> kernel state dump module). I plan to release this "core" version every 
> few LTTng releases and post it to LKML.
> 
> Comments and reviews are very welcome.

i have one very fundamental question: why should we do this 
source-intrusive method of adding tracepoints instead of the dynamic, 
unintrusive (and thus zero-overhead) KProbes+SystemTap method?

	Ingo
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