linux-kernel - Re: [PATCH v3 12/15] modpost: simplify the ->is

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Date:   Thu, 5 May 2022 22:27:04 +0200
From:   Nicolas Schier <nicolas@...sle.eu>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-kbuild@...r.kernel.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org, Ard Biesheuvel <ardb@...nel.org>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        linuxppc-dev@...ts.ozlabs.org, linux-um@...ts.infradead.org,
        linux-s390@...r.kernel.org,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH v3 12/15] modpost: simplify the ->is_static initialization

On Thu, May 05, 2022 at 04:22:41PM +0900 Masahiro Yamada wrote:
> ->is_static is set to true at allocation, then to false if the symbol
> comes from the dump file.
> 
> It is simpler to use !mod->from_dump as the init value.
> 
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---
> 
> (no changes since v2)
> 
> Changes in v2:
>   - New patch
> 
>  scripts/mod/modpost.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
> index e07542a90fc6..4edd5b223f49 100644
> --- a/scripts/mod/modpost.c
> +++ b/scripts/mod/modpost.c
> @@ -242,7 +242,7 @@ static struct symbol *alloc_symbol(const char *name)
>  
>  	memset(s, 0, sizeof(*s));
>  	strcpy(s->name, name);
> -	s->is_static = true;
> +
>  	return s;
>  }
>  
> @@ -376,6 +376,7 @@ static struct symbol *sym_add_exported(const char *name, struct module *mod,
>  
>  	s = alloc_symbol(name);
>  	s->module = mod;
> +	s->is_static = !mod->from_dump;
>  	s->is_gpl_only = gpl_only;
>  	list_add_tail(&s->list, &mod->exported_symbols);
>  	hash_add_symbol(s);
> @@ -2523,7 +2524,6 @@ static void read_dump(const char *fname)
>  			mod->from_dump = true;
>  		}
>  		s = sym_add_exported(symname, mod, gpl_only);
> -		s->is_static = false;
>  		sym_set_crc(s, crc);
>  		sym_update_namespace(symname, namespace);
>  	}
> -- 
> 2.32.0

Reviewed-by: Nicolas Schier <nicolas@...sle.eu>