linux-kernel - Re: [PATCH 1/9] kconfig: tinyconfig: provide whole choice blocks to avoid warnings

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Message-ID: <CAK7LNATsVJgEYZvDdORCM13o0Cyq+_XkfD8KoZY7ZVDbMiUrSA@mail.gmail.com>
Date:	Thu, 11 Aug 2016 17:43:24 +0900
From:	Masahiro Yamada <yamada.masahiro@...ionext.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	X86 ML <x86@...nel.org>, Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Josh Triplett <josh@...htriplett.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/9] kconfig: tinyconfig: provide whole choice blocks to
 avoid warnings

2016-08-11 6:54 GMT+09:00 Arnd Bergmann <arnd@...db.de>:
> Using "make tinyconfig" produces a couple of annoying warnings that show up
> for build test machines all the time:
>
>     .config:966:warning: override: NOHIGHMEM changes choice state
>     .config:965:warning: override: SLOB changes choice state
>     .config:963:warning: override: KERNEL_XZ changes choice state
>     .config:962:warning: override: CC_OPTIMIZE_FOR_SIZE changes choice state
>     .config:933:warning: override: SLOB changes choice state
>     .config:930:warning: override: CC_OPTIMIZE_FOR_SIZE changes choice state
>     .config:870:warning: override: SLOB changes choice state
>     .config:868:warning: override: KERNEL_XZ changes choice state
>     .config:867:warning: override: CC_OPTIMIZE_FOR_SIZE changes choice state
>
> I've made a previous attempt at fixing them and we discussed a number of
> alternatives.
>
> I tried changing the Makefile to use "merge_config.sh -n $(fragment-list)"
> but couldn't get that to work properly.
>
> This is yet another approach, based on the observation that we do want
> to see a warning for conflicting 'choice' options, and that we can simply
> make them non-conflicting by listing all other options as disabled.
> This is a trivial patch that we can apply independent of plans for other
> changes.
>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Link: https://storage.kernelci.org/mainline/v4.7-rc6/x86-tinyconfig/build.log
> https://patchwork.kernel.org/patch/9212749/
> Reviewed-by: Josh Triplett <josh@...htriplett.org>
> Cc: Masahiro Yamada <yamada.masahiro@...ionext.com>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> ---


Reviewed-by: Masahiro Yamada <yamada.masahiro@...ionext.com>




-- 
Best Regards
Masahiro Yamada