linux-kernel - Re: [PATCH 2/3] treewide: use -Wdeclaration-after-statement

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Date:   Tue, 1 Mar 2022 12:20:10 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     Arnd Bergmann <arnd@...nel.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Arnd Bergmann <arnd@...db.de>, Marco Elver <elver@...gle.com>,
        Jani Nikula <jani.nikula@...el.com>,
        David Sterba <dsterba@...e.com>, Alex Shi <alexs@...nel.org>,
        Miguel Ojeda <ojeda@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        llvm@...ts.linux.dev,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] treewide: use -Wdeclaration-after-statement

On Tue, Mar 1, 2022 at 12:06 PM Nick Desaulniers
<ndesaulniers@...gle.com> wrote:
>
> That said, there's a few additional places that reset KBUILD_CFLAGS.

Yeah, the boot code and vdso code often sets its own private flags,
because it's _so_ different.

The generic kernel CFLAGS often don't work at all, because that code
may be doing some truly horrendous things.

So I agree that this may not catch all the kernel code, but I don't
think it's much of a problem.

             Linus