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

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Date:	Fri, 15 Sep 2006 16:24:23 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	karim@...rsys.com
Cc:	Paul Mundt <lethal@...ux-sh.org>, Jes Sorensen <jes@....com>,
	Roman Zippel <zippel@...ux-m68k.org>,
	Ingo Molnar <mingo@...e.hu>,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	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

Ar Gwe, 2006-09-15 am 10:51 -0400, ysgrifennodd Karim Yaghmour:
> The static tracepoints we maintained were *the* solution for a great

I think you mean "a" solution. You've not proved there are no others.

> deal many people. As a maintainer I had two choices with those who
> were not content:
> a- Maintain their tracepoints for them -- not happening.
> b- Suggest they contribute to helping getting a generic tracing
>   infrastructure into the kernel and then make their case on the
>   lkml as to the pertinence of their instrumentation.

b has been done, its called kprobes. We just need better tools for the
dynamic probes.

> choice of tracepoints. Those who were using ltt for its designated
> purpose -- allowing normal users and developers to get an accurate
> view of the behavior of their system -- were very happy with it.

and you can maintain "Karim's probe list" which is the dynamic probe set
which matches your old static probes, only of course its now much more
flexible.

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