linux-kernel - Re: [PATCH] Clarify CONFIG_DEBUG

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Message-ID: <87fvny238i.fsf@tassilo.jf.intel.com>
Date:	Tue, 04 Feb 2014 09:32:13 -0800
From:	Andi Kleen <andi@...stfloor.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Borislav Petkov <bp@...en8.de>,
	LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>,
	Richard Weinberger <richard@....at>,
	Borislav Petkov <bp@...e.de>
Subject: Re: [PATCH] Clarify CONFIG_DEBUG_INFO's bloaty nature

Linus Torvalds <torvalds@...ux-foundation.org> writes:
>
> Trivial oneliner patch (independent of the discussion about improving
> the documentation), so I'll just apply it.
>
> I can't imagine that this would be controversial:
>
>    config DEBUG_INFO
>           bool "Compile the kernel with debug info"
>   -       depends on DEBUG_KERNEL
>   +       depends on DEBUG_KERNEL && !COMPILE_TEST
>           help
>
> Hm?

I have used debug info on allyesconfig in the past to run statistics
on the resulting binary. It's still useful, even though quite slow.
Make it depend on !EXPERT or somesuch? I agree for normal usages it's fine.

BTW you probably also want to do the same for the x86 instruction
decoder test. It seems to be the biggest compile time waster in
allyesconfig and I usually disable it too.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only
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