linux-kernel - Re: [PATCH v3] Compiler Attributes: remove CONFIG_ENABLE_MUST

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Message-ID: <CANiq72=WanQ0sqL14D3Keu0hT3L5GXBSV-znU5C9hhC1gjs=wA@mail.gmail.com>
Date:   Wed, 2 Dec 2020 13:50:30 +0100
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     "Jason A . Donenfeld" <Jason@...c4.com>,
        Nathan Chancellor <natechancellor@...il.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Shuah Khan <shuah@...nel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        Network Development <netdev@...r.kernel.org>,
        wireguard@...ts.zx2c4.com
Subject: Re: [PATCH v3] Compiler Attributes: remove CONFIG_ENABLE_MUST_CHECK

On Sat, Nov 28, 2020 at 8:34 PM Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> Revert commit cebc04ba9aeb ("add CONFIG_ENABLE_MUST_CHECK").
>
> A lot of warn_unused_result warnings existed in 2006, but until now
> they have been fixed thanks to people doing allmodconfig tests.
>
> Our goal is to always enable __must_check where appropriate, so this
> CONFIG option is no longer needed.
>
> I see a lot of defconfig (arch/*/configs/*_defconfig) files having:
>
>     # CONFIG_ENABLE_MUST_CHECK is not set
>
> I did not touch them for now since it would be a big churn. If arch
> maintainers want to clean them up, please go ahead.
>
> While I was here, I also moved __must_check to compiler_attributes.h
> from compiler_types.h
>
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> Acked-by: Jason A. Donenfeld <Jason@...c4.com>

Picked this new version with the Acks etc., plus I moved it within
compiler_attributes.h to keep it sorted (it's sorted by the second
column, rather than the first).

Thanks a lot!

Cheers,
Miguel