linux-kernel - Re: 2.6.22 -mm merge plans

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Message-ID: <y0my7k7uqpj.fsf@ton.toronto.redhat.com>
Date:	02 May 2007 12:37:28 -0400
From:	fche@...hat.com (Frank Ch. Eigler)
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, rusty@...tcorp.com.au, wfg@...c.edu
Subject: Re: 2.6.22 -mm merge plans


Andi Kleen <andi@...stfloor.org> writes:

> [...] The SystemTAP project also plan to use this type of
> > infrastructure to trace sites hard to instrument. The Linux Kernel
> > Markers has the support of Frank C. Eigler, author of their current
> > marker alternative [...]
> 
> All of the above don't use mainline kernels.
> That doesn't constitute using it.

Systemtap does run on mainline kernels.

> > "kprobes remains a vital foundation for SystemTap.  But markers are
> > attactive as an alternate source of trace/debug info.  Here's why:
> > [...]"
> 
> Talk is cheap. Do they have working code to use it? [...]

We had been waiting on the chicken & egg semaphore.  LTTNG has working
code yesterday (months ago); systemtap will have it "tomorrow" (a week
or few).


- FChE
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