linux-kernel - Re: [PATCH 12/22] csky: fix arch_jump_label_transform

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Message-ID: <CAJF2gTSEziwKn+f6DfZXRuzW1SXaWraKL2HdXMRkEOGyuHq3MQ@mail.gmail.com>
Date:   Sat, 11 Nov 2023 23:21:53 -0500
From:   Guo Ren <guoren@...nel.org>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org,
        Masahiro Yamada <masahiroy@...nel.org>,
        linux-kbuild@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
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Subject: Re: [PATCH 12/22] csky: fix arch_jump_label_transform_static override

On Wed, Nov 8, 2023 at 8:02 AM Arnd Bergmann <arnd@...nel.org> wrote:
>
> From: Arnd Bergmann <arnd@...db.de>
>
> The arch_jump_label_transform_static() function in csky was originally meant to
> override the generic __weak function, but that got changed to an #ifndef check.
>
> This showed up as a missing-prototype warning:
> arch/csky/kernel/jump_label.c:43:6: error: no previous prototype for 'arch_jump_label_transform_static' [-Werror=missing-prototypes]
>
> Change the method to use the new method of having a #define and a prototype
> for the global function.
>
> Fixes: 7e6b9db27de9 ("jump_label: make initial NOP patching the special case")
> Fixes: 4e8bb4ba5a55 ("csky: Add jump-label implementation")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  arch/csky/include/asm/jump_label.h | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/arch/csky/include/asm/jump_label.h b/arch/csky/include/asm/jump_label.h
> index d488ba6084bc..98a3f4b168bd 100644
> --- a/arch/csky/include/asm/jump_label.h
> +++ b/arch/csky/include/asm/jump_label.h
> @@ -43,5 +43,10 @@ static __always_inline bool arch_static_branch_jump(struct static_key *key,
>         return true;
>  }
>
> +enum jump_label_type;
> +void arch_jump_label_transform_static(struct jump_entry *entry,
> +                                     enum jump_label_type type);
> +#define arch_jump_label_transform_static arch_jump_label_transform_static
> +
>  #endif  /* __ASSEMBLY__ */
>  #endif /* __ASM_CSKY_JUMP_LABEL_H */
> --
> 2.39.2
>
>
Thank you!
Reviewed-by: Guo Ren <guoren@...nel.org>

-- 
Best Regards
 Guo Ren