linux-kernel - Re: [PATCH v2 next] compiler.h: Move __is

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Message-ID: <202310050921.F0B15702D4@keescook>
Date:   Thu, 5 Oct 2023 09:21:59 -0700
From:   Kees Cook <keescook@...omium.org>
To:     David Laight <David.Laight@...lab.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "'linux@...musvillemoes.dk'" <linux@...musvillemoes.dk>,
        'Steven Rostedt' <rostedt@...dmis.org>,
        "'bvanassche@....org'" <bvanassche@....org>,
        "torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Arnd Bergmann <arnd@...db.de>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>
Subject: Re: [PATCH v2 next] compiler.h: Move __is_constexpr() to compiler.h.

On Thu, Oct 05, 2023 at 11:39:54AM +0000, David Laight wrote:
> Prior to f747e6667ebb2 __is_constexpr() was in its only user minmax.h.
> That commit moved it to const.h - but that file just defines ULL(x) and
>   UL(x) so that constants can be defined for .S and .c files.
> So apart from the word 'const' it wasn't really a good location.
> Instead move the definition to compiler.h just before the similar
>   is_signed_type() and is_unsigned_type().
> This may not be a good long-term home, but the three definitions
>   belong together.
> 
> Signed-off-by: David Laight <david.laight@...lab.com>

Yeah, this is what I'd expect (a duplicate move in tools/). Thanks!

Reviewed-by: Kees Cook <keescook@...omium.org>

-- 
Kees Cook