linux-kernel - Re: [PATCH 0/3] build system: section garbage collection for vmlinux

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Date:	Thu, 6 Sep 2007 13:40:44 +0200
From:	Oleg Verych <olecom@...wer.upol.cz>
To:	Denys Vlasenko <vda.linux@...glemail.com>
Cc:	sam@...nborg.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] build system: section garbage collection for vmlinux

On Thu, Sep 06, 2007 at 11:55:46AM +0100, Denys Vlasenko wrote:
[]
> > Give me example, please, why function must be non static if not used.
> 
> Where do you see I'm saying that they must be non-static?
> I'm all for marking functions static. I just did it for aic7xxx.
> 
> > If usage requires kconfig tuning, then this is a better way to go,
> 
> We already do it, but we don't have enough developers to audit
> every driver for every possible combination of config options.
> As a result, there always be some amount of unused functions and data.
> Using --gc-sections will discard that.

You've did a tool. Documenting this tool to have it available for
testers/janitors/maintainers is a better way, than to have all that
opinions/problems with merging-to-mainline.

> > than to adopt yet another GNU/Luxury.
> 
> Actually, this is how linkers should have worked long ago.
> Borland's Turbo Pascal was doing it ten+ years ago.
> 
> I don't understand why you are opposed to toolchain helping
> humans to get optimized result. But it's fine with me.
> I won't force anyone to select CONFIG_DISCARD_UNUSED_SECTIONS.

That's why. It's treating symptoms, isn't it?
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