linux-kernel - Re: [PATCH 2/2] Kprobes: Move kprobes examples to samples/

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Date:	Thu, 3 Jan 2008 10:18:06 -0500
From:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	akpm@...ux-foundation.org, lkml <linux-kernel@...r.kernel.org>,
	Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
	davem@...emloft.net, hskinnemoen@...el.com, mhiramat@...hat.com,
	sam@...nborg.org, randy.dunlap@...cle.com
Subject: Re: [PATCH 2/2] Kprobes: Move kprobes examples to samples/

* Ingo Molnar (mingo@...e.hu) wrote:
> 
> * Ananth N Mavinakayanahalli <ananth@...ibm.com> wrote:
> 
> > > feature request: please make this work in the !modular case as well 
> > > - if built-in then it should just run sometime during bootup and run 
> > > the tests and report success/failure. This way automated testing can 
> > > pick up any regressions much easier.
> > 
> > Will try cook up something along those lines. It'll be easy to verify 
> > if the probes inserted and removed properly, but verifying handlers 
> > run correctly will need some work.
> > 
> > We have a sort of regression test bucket that uses expect to parse the 
> > dmesg to verify handlers did run correctly; that isn't a totally 
> > in-kernel solution anyway. I have a couple of ideas in mind to make it 
> > easier.
> 
> Great. Would be really nice to have something along the lines of 
> CONFIG_DEBUG_LOCKING_API_SELFTESTS. Those unit tests took time to 
> develop, but they caught more than 90% (!) of the internal lockdep 
> engine bugs before they ever hit mainline.
> 

I would just like to point out that the samples/ directory should keep
files as easy to read and understand for newcomers (it is meant to be
compiled Documentation examples). I see the interest in turning it into
a regression test too, but I would recommend leaving the "test" code out
of the sample module itself to improve readability.

Mathieu

> 	Ingo

-- 
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
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