linux-kernel - Re: [PATCH 2/2] linker script: unify usage of discard definition

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Date:	Fri, 17 Jul 2009 23:13:12 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Tejun Heo <tj@...nel.org>
Cc:	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Michal Simek <monstr@...str.eu>,
	microblaze-uclinux@...e.uq.edu.au,
	Paul Mundt <lethal@...ux-sh.org>,
	Tony Luck <tony.luck@...el.com>,
	Mike Frysinger <vapier@...too.org>
Subject: Re: [PATCH 2/2] linker script: unify usage of discard definition

On Wed, Jul 08, 2009 at 06:27:12PM +0900, Tejun Heo wrote:
> Discarded sections in different archs share some commonality but have
> considerable differences.  This led to linker script for each arch
> implementing its own /DISCARD/ definition, which makes maintaining
> tedious and adding new entries error-prone.
> 
> This patch makes all linker scripts to move discard definitions to the
> end of the linker script and use the common DISCARDS macro.  As ld
> uses the first matching section definition, archs can include default
> discarded sections by including them earlier in the linker script.
> 
> ia64 is notable because it first throws away some ia64 specific
> subsections and then include the rest of the sections into the final
> image, so those sections must be discarded before the inclusion.
> 
> defconfig compile tested for x86, x86-64, powerpc, powerpc64, ia64,
> alpha, sparc, sparc64 and s390.  Michal Simek tested microblaze.
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>
> Acked-by: Paul Mundt <lethal@...ux-sh.org>
> Acked-by: Mike Frysinger <vapier@...too.org>
> Tested-by: Michal Simek <monstr@...str.eu>
> Cc: linux-arch@...r.kernel.org
> Cc: Michal Simek <monstr@...str.eu>
> Cc: microblaze-uclinux@...e.uq.edu.au
> Cc: Sam Ravnborg <sam@...nborg.org>
> Cc: Tony Luck <tony.luck@...el.com>

Patch looks good - thanks!

Acked-by: Sam Ravnborg <sam@...nborg.org>

	Sam
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