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

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Message-ID: <20201130010422.GA1956616@ubuntu-m3-large-x86>
Date:   Sun, 29 Nov 2020 18:04:22 -0700
From:   Nathan Chancellor <natechancellor@...il.com>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
        "Jason A . Donenfeld" <Jason@...c4.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Shuah Khan <shuah@...nel.org>,
        clang-built-linux@...glegroups.com, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, netdev@...r.kernel.org,
        wireguard@...ts.zx2c4.com
Subject: Re: [PATCH v3] Compiler Attributes: remove CONFIG_ENABLE_MUST_CHECK

On Sun, Nov 29, 2020 at 04:33:35AM +0900, Masahiro Yamada 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>

Acked-by: Nathan Chancellor <natechancellor@...il.com>