From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rusty Russell Subject: Re: [PATCH] Add non-zero module sections to sysfs Date: Mon, 08 Apr 2013 13:44:45 +0930 Message-ID: <878v4tbqve.fsf@rustcorp.com.au> References: <1364994499-23708-1-git-send-email-sisewank@cip.cs.fau.de> <87mwtf3ya1.fsf@rustcorp.com.au> <515D4A7F.5070102@cip.cs.fau.de> <87vc81lj7x.fsf@rustcorp.com.au> <1365156435.1970.31.camel@dabdike> <20130406104053.GA24710@yoda.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Sebastian Wankerl , linux-kernel@vger.kernel.org, Philip Kranz , i4passt@lists.informatik.uni-erlangen.de, linux-parisc@vger.kernel.org To: Philip Kranz , James Bottomley Return-path: In-Reply-To: <20130406104053.GA24710@yoda.lan> List-ID: List-Id: linux-parisc.vger.kernel.org Philip Kranz writes: > 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? Good point. ld -r will collapse them into the same section (since gcc produces them they have to have the same section attributes). You can do it with --unique, but no arch uses that. PARISC has a platform-specific toolchain hack which does that for .text sections. (Thanks to Alan Modra for that clue...) Thanks, Rusty.