linux-kernel - Re: [GIT PULL] Kbuild updates for v6.16-rc1

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Message-ID: <20250611075533.8102A57-hca@linux.ibm.com>
Date: Wed, 11 Jun 2025 09:55:33 +0200
From: Heiko Carstens <hca@...ux.ibm.com>
To: Masahiro Yamada <masahiroy@...nel.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: [GIT PULL] Kbuild updates for v6.16-rc1

On Sun, Jun 08, 2025 at 01:41:18AM +0900, Masahiro Yamada wrote:
> Kbuild updates for v6.16
> 
>  - Add support for the EXPORT_SYMBOL_GPL_FOR_MODULES() macro, which exports a
>    symbol only to specified modules
> 
>  - Improve ABI handling in gendwarfksyms
> 
>  - Forcibly link lib-y objects to vmlinux even if CONFIG_MODULES=n
> 
>  - Add checkers for redundant or missing <linux/export.h> inclusion

As you write in commit a934a57a42f6 ("scripts/misc-check: check missing
#include <linux/export.h> when W=1") this adds now 4000+ extra warnings
for W=1 builds, which makes such builds more or less useless for me.

Also the commit only describes what you want to achieve, but not why.
I can only guess that you want to reduce header dependencies(?).

Don't get me wrong, I can address all of this trivial churn for s390, however
enforcing so many extra warnings to everyone with W=1 builds doesn't look like
the right approach to me.