linux-kernel - Re: [PATCH v2 0/4] Add support for compiling with -ffunction-sections -fdata-sections

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Message-ID: <alpine.DEB.1.10.0904202010220.30705@vinegar-pot.mit.edu>
Date:	Mon, 20 Apr 2009 20:26:49 -0400 (EDT)
From:	Tim Abbott <tabbott@....EDU>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
cc:	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>
Subject: Re: [PATCH v2 0/4] Add support for compiling with -ffunction-sections
 -fdata-sections

On Mon, 20 Apr 2009, Linus Torvalds wrote:

> Because I absolutely hate the tools issues that I'm convinced will 
> happen the moment I merge it.

I assume you're only worried about toolchain problems for people who are 
actually using the -ffunction-sections option.  Would it help if the 
-ffunction-sections compilation option were marked as experimental until 
proven otherwise?

If you're not willing to merge even an experimental option for 
-ffunction-sections, would you at least be willing to merge the first 
three patches in the patch series?  Compiling with -ffunction-sections 
would not be supported by the mainline kernel, so any toolchain issues 
with it would not be your problem.  But any vendor that wants to take 
advantage of -ffunction-sections would still be able to use it without 
having to maintain 300 lines of scattered changes to the kernel.

	-Tim Abbott


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