linux-kernel - Re: [PATCH] Add non-zero module sections to sysfs

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Message-ID: <20130406104053.GA24710@yoda.lan>
Date:	Sat, 6 Apr 2013 12:40:53 +0200
From:	Philip Kranz <philip.kranz@...glemail.com>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Sebastian Wankerl <sisewank@....cs.fau.de>,
	linux-kernel@...r.kernel.org,
	Philip Kranz <philip.kranz@...glemail.com>,
	i4passt@...ts.informatik.uni-erlangen.de,
	linux-parisc@...r.kernel.org
Subject: Re: [PATCH] Add non-zero module sections to sysfs

Hello.

On Fri, Apr 05, 2013 at 12:07:15PM +0200, James Bottomley wrote:
> Just so you know: this isn't a parisc specific problem.  Gcc produces
> duplicate section names under various circumstances, but the one that
> bites us is -ffunction-sections.  Note that there are proposals to use
> -ffunction-sections on all architectures (so we can garbage collect
> unused functions) in which case you'll induce the bug identified in
> 35dead4235e2b67da7275b4122fed37099c2f462 on every architecture

I am not able to produce an object file with duplicate section names
using gcc on x86. Even with -ffunction-sections, every section gets a
unique name. Is this architecture-specific behaviour of gcc?

Greetings,
Philip

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