linux-kernel - Re: [PATCH 1/3] btf: remove redundant CONFIG

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Message-ID: <20240911210241.GA2305132@thelio-3990X>
Date: Wed, 11 Sep 2024 14:02:41 -0700
From: Nathan Chancellor <nathan@...nel.org>
To: Masahiro Yamada <masahiroy@...nel.org>
Cc: Martin KaFai Lau <martin.lau@...ux.dev>, bpf@...r.kernel.org,
	linux-arch@...r.kernel.org, Andrii Nakryiko <andrii@...nel.org>,
	linux-kernel@...r.kernel.org, Nicolas Schier <nicolas@...sle.eu>,
	linux-kbuild@...r.kernel.org
Subject: Re: [PATCH 1/3] btf: remove redundant CONFIG_BPF test in
 scripts/link-vmlinux.sh

On Wed, Sep 11, 2024 at 08:03:56PM +0900, Masahiro Yamada wrote:
> CONFIG_DEBUG_INFO_BTF depends on CONFIG_BPF_SYSCALL, which in turn
> selects CONFIG_BPF.
> 
> When CONFIG_DEBUG_INFO_BTF=y, CONFIG_BPF=y is always met.
> 
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>

Reviewed-by: Nathan Chancellor <nathan@...nel.org>

> ---
> 
>  scripts/link-vmlinux.sh | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
> index bd196944e350..cfffc41e20ed 100755
> --- a/scripts/link-vmlinux.sh
> +++ b/scripts/link-vmlinux.sh
> @@ -288,7 +288,7 @@ strip_debug=
>  vmlinux_link vmlinux
>  
>  # fill in BTF IDs
> -if is_enabled CONFIG_DEBUG_INFO_BTF && is_enabled CONFIG_BPF; then
> +if is_enabled CONFIG_DEBUG_INFO_BTF; then
>  	info BTFIDS vmlinux
>  	${RESOLVE_BTFIDS} vmlinux
>  fi
> -- 
> 2.43.0
>