linux-kernel - Re: [PATCH 1/3] build system: section garbage collection for vmlinux

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Message-ID: <20070906223617.GB10101@uranus.ravnborg.org>
Date:	Fri, 7 Sep 2007 00:36:17 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Denys Vlasenko <vda.linux@...glemail.com>
Cc:	kai@...maschewski.name, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] build system: section garbage collection for vmlinux

On Thu, Sep 06, 2007 at 11:59:41AM +0100, Denys Vlasenko wrote:
> On Wednesday 05 September 2007 21:07, Sam Ravnborg wrote:
> > On Wed, Sep 05, 2007 at 02:47:00PM +0100, Denys Vlasenko wrote:
> > > On Wednesday 05 September 2007 14:43, Denys Vlasenko wrote:
> > > > These patches fix section names and add
> > > > CONFIG_DISCARD_UNUSED_SECTIONS. It is not enabled
> > > > unconditionally because only newest binutils have
> > > > ld --gc-sections which is stable enough for kernel use.
> > > > IOW: this is an experimental feature for now.
> > > 
> > > Part 1: fix section names over entire source (all arches).
> > > 
> > > Patch is big and boring global s/.text.lock/.text_lock/
> > > type thing.
> > 
> > The normal naming scheme seems to be:
> > .<usage>.text so in your example it would be: .lock.text
> > See the naming og init and exit sections (that was renamed
> > during 2.5 to be compatible with -ffunction-sections).
> 
> Thanks, will do it that way. I plan to re-submit patches for inclusion
> into 2.6.24.
This should simmer in -mm for a few weeks at minimum before hitting
mainline. I would cosider it 2.6.25 material.
We could use the 2.6.23 timeframe to bring up all the linker
script file to a level where adding all the KEEP's are mostly done
in the generic vmlinux.h file.

	Sam
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