linux-kernel - Re: [RFC PATCH 5/8] module: add function to map address to containing module

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Message-Id: <200804220140.58784.rusty@rustcorp.com.au>
Date:	Tue, 22 Apr 2008 01:40:58 +1000
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Peter Oberparleiter <peter.oberparleiter@...ibm.com>
Cc:	linux-kernel@...r.kernel.org, ltp-list@...ts.sourceforge.net,
	ltp-coverage@...ts.sourceforge.net,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC PATCH 5/8] module: add function to map address to containing module

On Monday 21 April 2008 22:34:39 Peter Oberparleiter wrote:
> From: Peter Oberparleiter <peter.oberparleiter@...ibm.com>
>
> module_address() maps an address to the module containing it in either
> text or data section. Required by the gcov profiling infrastructure to
> associate profiling data structures with modules.

Locking problem; this isn't safe.  Note that we block preemption to traverse 
the module list.  You could grab a reference, and fix up all the callers to 
put it once they're done?

Thanks,
Rusty.
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