linux-kernel - Re: [PATCH v2 10/26] modpost: move static EXPORT_SYMBOL check to check

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Message-ID: <CAKwvOd=JAhex+9fM7jrMJwrBkvwewnUrh_sUZk6Re=VY+P+Bow@mail.gmail.com>
Date:   Tue, 3 May 2022 14:54:51 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        Michal Marek <michal.lkml@...kovi.net>
Subject: Re: [PATCH v2 10/26] modpost: move static EXPORT_SYMBOL check to check_exports()

On Sun, May 1, 2022 at 1:42 AM Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> Now that struct module has a list of symbols it exports, this check
> can go into check_exports(). The code becomes shorter.
>
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>

Thanks for the patch!
Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>

> ---
>
> (no changes since v1)
>
>  scripts/mod/modpost.c | 17 ++++++-----------
>  1 file changed, 6 insertions(+), 11 deletions(-)
>
> diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
> index cd49ef7b5953..4ce8d164b8e0 100644
> --- a/scripts/mod/modpost.c
> +++ b/scripts/mod/modpost.c
> @@ -2199,6 +2199,12 @@ static void check_exports(struct module *mod)
>                 if (!mod->is_gpl_compatible)
>                         check_for_gpl_usage(exp->export, basename, exp->name);
>         }
> +
> +       list_for_each_entry(s, &mod->exported_symbols, list) {
> +               if (s->is_static)
> +                       error("\"%s\" [%s] is a static %s\n",
> +                             s->name, mod->name, export_str(s->export));
> +       }
>  }
>
>  static void check_modname_len(struct module *mod)
> @@ -2510,7 +2516,6 @@ int main(int argc, char **argv)
>         char *missing_namespace_deps = NULL;
>         char *dump_write = NULL, *files_source = NULL;
>         int opt;
> -       int n;
>         LIST_HEAD(dump_lists);
>         struct dump_list *dl, *dl2;
>
> @@ -2606,16 +2611,6 @@ int main(int argc, char **argv)
>         if (sec_mismatch_count && !sec_mismatch_warn_only)
>                 error("Section mismatches detected.\n"
>                       "Set CONFIG_SECTION_MISMATCH_WARN_ONLY=y to allow them.\n");
> -       for (n = 0; n < SYMBOL_HASH_SIZE; n++) {
> -               struct symbol *s;
> -
> -               for (s = symbolhash[n]; s; s = s->next) {
> -                       if (s->is_static)
> -                               error("\"%s\" [%s] is a static %s\n",
> -                                     s->name, s->module->name,
> -                                     export_str(s->export));
> -               }
> -       }
>
>         if (nr_unresolved > MAX_UNRESOLVED_REPORTS)
>                 warn("suppressed %u unresolved symbol warnings because there were too many)\n",
> --
> 2.32.0
>


-- 
Thanks,
~Nick Desaulniers