linux-kernel - Re: [PATCH] kconfig.h: remove config

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Date:   Sun, 16 Oct 2016 18:19:45 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        linux-arch@...r.kernel.org,
        Peter Oberparleiter <oberpar@...ux.vnet.ibm.com>,
        Arnd Bergmann <arnd@...db.de>,
        Kees Cook <keescook@...omium.org>,
        Michal Marek <mmarek@...e.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Thomas Garnier <thgarnie@...gle.com>
Subject: Re: [PATCH] kconfig.h: remove config_enabled() macro


* Masahiro Yamada <yamada.masahiro@...ionext.com> wrote:

> The use of config_enabled() is ambiguous.  For config options,
> IS_ENABLED(), IS_REACHABLE(), etc. will make intention clearer.
> Sometimes config_enabled() has been used for non-config options
> because it is useful to check whether the given symbol is defined
> or not.
> 
> I have been tackling on deprecating config_enabled(), and now is the
> time to finish this work.
> 
> Some new users have appeared for v4.9-rc1, but it is trivial to
> replace them:
> 
>  - arch/x86/mm/kaslr.c
>   replace config_enabled() with IS_ENABLED() because
>   CONFIG_X86_ESPFIX64 and CONFIG_EFI are boolean.

Acked-by: Ingo Molnar <mingo@...nel.org>

Thanks,

	Ingo