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

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Date:	Thu, 3 Jan 2008 12:04:59 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Ananth N Mavinakayanahalli <ananth@...ibm.com>
Cc:	akpm@...ux-foundation.org, lkml <linux-kernel@...r.kernel.org>,
	Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
	davem@...emloft.net, mathieu.desnoyers@...ymtl.ca,
	hskinnemoen@...el.com, mhiramat@...hat.com, sam@...nborg.org,
	randy.dunlap@...cle.com
Subject: Re: [PATCH 2/2] Kprobes: Move kprobes examples to samples/


* 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.

	Ingo
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