linux-kernel - Re: out-of-tree module shouldn't disable lockdep

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Message-ID: <20111222170723.GI17084@google.com>
Date:	Thu, 22 Dec 2011 09:07:23 -0800
From:	Tejun Heo <tj@...nel.org>
To:	Ben Hutchings <ben@...adent.org.uk>, Dave Jones <davej@...hat.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: out-of-tree module shouldn't disable lockdep

On Thu, Dec 22, 2011 at 08:59:52AM -0800, Tejun Heo wrote:
> Hello, guys.
> 
> 2449b8ba074 "module,bug: Add TAINT_OOT_MODULE flag for modules not
> built in-tree" added TAINT_OOT_MODULE to mark kernel which has
> out-of-tree module loaded, which might be a good idea but an
> unfortunate side effect of tainting is that it disables lockdep.  So,
> now, none of my test modules is watched by lockdep.  This is a bad bad
> idea.  People use oot modules to write test code and disabling lockdep
> for test codes is silly.  Can we please fix this?

Ingo just told me it's already fixed and scheduled for upstream, so
please forget about this thread.

Thanks.

-- 
tejun
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