linux-kernel - Re: [PATCH] include/asm-generic/io.h: add dummy fuctions to support 'COMPILE

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Date:	Tue, 2 Jul 2013 12:57:15 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Chen Gang <gang.chen@...anux.com>
Cc:	Richard Weinberger <richard@....at>, Arnd Bergmann <arnd@...db.de>,
	Jeff Dike <jdike@...toit.com>,
	David Sharp <dhsharp@...gle.com>,
	"sfr@...b.auug.org.au" <sfr@...b.auug.org.au>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ingo Molnar <mingo@...nel.org>,
	uml-devel <user-mode-linux-devel@...ts.sourceforge.net>,
	uml-user <user-mode-linux-user@...ts.sourceforge.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux-Arch <linux-arch@...r.kernel.org>,
	Mark Brown <broonie@...nel.org>,
	David Miller <davem@...emloft.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jiri Kosina <trivial@...nel.org>
Subject: Re: [PATCH] include/asm-generic/io.h: add dummy fuctions to support
 'COMPILE_TEST' in 'asm-generic'.

On Tue, Jul 2, 2013 at 10:00 AM, Chen Gang <gang.chen@...anux.com> wrote:
> On 07/02/2013 03:19 PM, Geert Uytterhoeven wrote:
>> On Tue, Jul 2, 2013 at 4:13 AM, Chen Gang <gang.chen@...anux.com> wrote:
>>> > 'asm-generic' need provide necessary configuration checking, if can't
>>> > pass checking, 'asm-generic' shouldn't implement it.
>>> >
>>> > For 'COMPILE_TEST', according to its help contents, 'asm-generic' need
>>> > let it pass configuration checking, and provide related dummy contents
>>> > for it.
>>> >
>>> > Part of 'COMPLE_TEST' help contents in "init/Kconfig":
>>> >
>>> >   "...Despite they cannot be loaded there (or even when they load they cannot be used due to missing HW support)..."
>>> >
>>> >
>>> > Signed-off-by: Chen Gang <gang.chen@...anux.com>
>> NAKed-by: Geert Uytterhoeven <geert@...ux-m68k.org>
>>
>> Please don't clutter the code with checks for CONFIG_COMPILE_TEST.
>
> Do you mean: 'asm-generic' should not support 'COMPILE_TEST' (the
> platform should not support 'COMPILE_TEST") ?
>
> Or you mean: 'COMPILE_TEST' should not exist in kernel ?

I mean that COMPILE_TEST should exist in Kconfig files only.
It's only meant to have more compile coverage, not to "fix" (through #ifdef)
more code to make it compile.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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