linux-kernel - Re: [PATCH v3 1/3] Make section names compatible with -ffunction-sections -fdata-sections

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Message-ID: <20090424001658.GB27897@linux-sh.org>
Date:	Fri, 24 Apr 2009 09:16:58 +0900
From:	Paul Mundt <lethal@...ux-sh.org>
To:	Tim Abbott <tabbott@....EDU>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux kernel mailing list <linux-kernel@...r.kernel.org>,
	Anders Kaseorg <andersk@....edu>,
	Waseem Daher <wdaher@....edu>,
	Denys Vlasenko <vda.linux@...glemail.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Andi Kleen <andi@...stfloor.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Jeff Arnold <jbarnold@....edu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jon Masters <jonathan@...masters.org>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	Theodore Ts'o <tytso@....edu>,
	Nikanth Karthikesan <knikanth@...e.de>,
	Arjan van de Ven <arjan@...radead.org>,
	Am??rico Wang <xiyou.wangcong@...il.com>
Subject: Re: [PATCH v3 1/3] Make section names compatible with -ffunction-sections -fdata-sections

On Thu, Apr 23, 2009 at 04:49:32PM -0400, Tim Abbott wrote:
> The purpose of this patch is to make it possible to build the kernel
> with "gcc -ffunction-sections -fdata-sections".  This is a key step
> towards being able to compile the kernel using the --gc-sections
> linker option, which can be used to decrease the vmlinux size by
> garbage collecting unused functions.  Also, Ksplice's 'run-pre
> matching' process is much simpler if the original kernel was compiled
> with -ffunction-sections and -fdata-sections.
> 
[snip]

> Signed-off-by: Tim Abbott <tabbott@....edu>
> Signed-off-by: Anders Kaseorg <andersk@....edu>

As this is the only really invasive part of the patch, it would certainly
be good to see this merged early.

Acked-by: Paul Mundt <lethal@...ux-sh.org>
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