linux-kernel - Re: [PATCH v6 17/20] modpost: merge bad_tosec=ALL_EXIT

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Message-ID: <CAKwvOdnv-=eXtgwuZ8URz_FjnUansgg3MeuGGRf2C=Wr+VGkrA@mail.gmail.com>
Date:   Thu, 25 May 2023 11:36:23 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        Nathan Chancellor <nathan@...nel.org>,
        Nicolas Schier <nicolas@...sle.eu>
Subject: Re: [PATCH v6 17/20] modpost: merge bad_tosec=ALL_EXIT_SECTIONS
 entries in sectioncheck table

On Sun, May 21, 2023 at 9:05 AM Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> There is no distinction between TEXT_TO_ANY_EXIT and DATA_TO_ANY_EXIT.
> Just merge them.

Can something similar be done for ALL_PCI_INIT_SECTIONS and
ALL_XXXINIT_SECTIONS? (as a follow up)

Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>

>
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---
>
>  scripts/mod/modpost.c | 15 ++++-----------
>  1 file changed, 4 insertions(+), 11 deletions(-)
>
> diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
> index aea9d6cd243d..b5f7f4811c39 100644
> --- a/scripts/mod/modpost.c
> +++ b/scripts/mod/modpost.c
> @@ -844,8 +844,7 @@ static const char *const optim_symbols[] = { "*.constprop.*", NULL };
>  enum mismatch {
>         TEXT_TO_ANY_INIT,
>         DATA_TO_ANY_INIT,
> -       TEXT_TO_ANY_EXIT,
> -       DATA_TO_ANY_EXIT,
> +       TEXTDATA_TO_ANY_EXIT,
>         XXXINIT_TO_SOME_INIT,
>         XXXEXIT_TO_SOME_EXIT,
>         ANY_INIT_TO_ANY_EXIT,
> @@ -888,14 +887,9 @@ static const struct sectioncheck sectioncheck[] = {
>         .mismatch = DATA_TO_ANY_INIT,
>  },
>  {
> -       .fromsec = { TEXT_SECTIONS, NULL },
> +       .fromsec = { TEXT_SECTIONS, DATA_SECTIONS, NULL },
>         .bad_tosec = { ALL_EXIT_SECTIONS, NULL },
> -       .mismatch = TEXT_TO_ANY_EXIT,
> -},
> -{
> -       .fromsec = { DATA_SECTIONS, NULL },
> -       .bad_tosec = { ALL_EXIT_SECTIONS, NULL },
> -       .mismatch = DATA_TO_ANY_EXIT,
> +       .mismatch = TEXTDATA_TO_ANY_EXIT,
>  },
>  /* Do not reference init code/data from meminit code/data */
>  {
> @@ -1162,8 +1156,7 @@ static void default_mismatch_handler(const char *modname, struct elf_info *elf,
>         switch (mismatch->mismatch) {
>         case TEXT_TO_ANY_INIT:
>         case DATA_TO_ANY_INIT:
> -       case TEXT_TO_ANY_EXIT:
> -       case DATA_TO_ANY_EXIT:
> +       case TEXTDATA_TO_ANY_EXIT:
>         case XXXINIT_TO_SOME_INIT:
>         case XXXEXIT_TO_SOME_EXIT:
>         case ANY_INIT_TO_ANY_EXIT:
> --
> 2.39.2
>


-- 
Thanks,
~Nick Desaulniers