From: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
To: Joe Perches <joe@perches.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Eli Friedman <efriedma@codeaurora.org>,
Christopher Li <sparse@chrisli.org>,
Kees Cook <keescook@chromium.org>, Ingo Molnar <mingo@kernel.org>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Dominique Martinet <asmadeus@codewreck.org>,
Nick Desaulniers <ndesaulniers@google.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] include/linux/compiler*.h: Use feature checking instead of version checks for attributes
Date: Mon, 27 Aug 2018 14:33:12 +0200 [thread overview]
Message-ID: <CANiq72n=WrLWD1-hq2z1gNPJViRoLvveq9xfw6Ndnj0S4Mp3eg@mail.gmail.com> (raw)
In-Reply-To: <6c81222980f0f81732726b405df6dbf2b8f98844.camel@perches.com>
Hi Joe,
On Sun, Aug 26, 2018 at 8:50 PM, Joe Perches <joe@perches.com> wrote:
> On Sun, 2018-08-26 at 19:57 +0200, Miguel Ojeda wrote:
>> Instead of using version checks per-compiler to define (or not) each attribute,
>> use __has_attribute to test for them, following the cleanup started with
>> commit 815f0ddb346c ("include/linux/compiler*.h: make compiler-*.h mutually exclusive").
>
> Very nice. Thank you Miguel.
Thanks!
>
> trivia:
>
> I believe the alphabetic sorting of the required attributes
> makes reading by use a bit difficult and I would prefer that
> various required attributes are sorted by logical use instead.
>
> ie: keep noinline and __always_inline together,
> keep __used and __always_unused together,
> etc...
>
>
Both ways are fine with me --- I sorted them as an attempt to avoid
the file evolving into a mess again in the upcoming years :-)
Half-joking: it may also be a good way to avoid people "guessing" what
the attributes do by name and, instead, consulting the docs (either
the compiler's, or a Doc/ file maybe).
Cheers,
Miguel
next prev parent reply other threads:[~2018-08-27 12:33 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-26 17:57 [PATCH] include/linux/compiler*.h: Use feature checking instead of version checks for attributes Miguel Ojeda
2018-08-26 18:30 ` Miguel Ojeda
2018-08-26 18:50 ` Joe Perches
2018-08-27 12:33 ` Miguel Ojeda [this message]
2018-08-27 17:43 ` Nick Desaulniers
2018-08-27 17:48 ` Nick Desaulniers
2018-08-28 15:10 ` Miguel Ojeda
2018-08-28 17:05 ` Nick Desaulniers
2018-08-28 20:33 ` Miguel Ojeda
2018-08-28 15:03 ` Miguel Ojeda
2018-08-28 16:53 ` Nick Desaulniers
2018-08-28 20:41 ` Miguel Ojeda
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