Re: [PATCH v5] modpost: check for static EXPORT_SYMBOL* functions

Masahiro Yamada
2019-08-07T15:13:05Z

On Thu, Aug 1, 2019 at 3:07 PM Denis Efremov <efremov@linux.com> wrote:
>
> This patch adds a check to warn about static EXPORT_SYMBOL* functions
> during the modpost. In most of the cases, a static symbol marked for
> exporting is an odd combination that should be fixed either by deleting
> the exporting mark or by removing the static attribute and adding the
> appropriate declaration to headers.
>
> This check could help to detect the following problems:
> 1. 550113d4e9f5 ("i2c: add newly exported functions to the header, too")
> 2. 54638c6eaf44 ("net: phy: make exported variables non-static")
> 3. 98ef2046f28b ("mm: remove the exporting of totalram_pages")
> 4. 73df167c819e ("s390/zcrypt: remove the exporting of ap_query_configuration")
> 5. a57caf8c527f ("sunrpc/cache: remove the exporting of cache_seq_next")
> 6. e4e4730698c9 ("crypto: skcipher - remove the exporting of skcipher_walk_next")
> 7. 14b4c48bb1ce ("gve: Remove the exporting of gve_probe")
> 8. 9b79ee9773a8 ("scsi: libsas: remove the exporting of sas_wait_eh")
> 9. ...
>
> The build time impact is very limited and is almost at the unnoticeable
> level (< 1 sec).
>
> Acked-by: Emil Velikov <emil.l.velikov@gmail.com>
> Signed-off-by: Denis Efremov <efremov@linux.com>
> ---

Applied to linux-kbuild. Thanks.

--
Best Regards
Masahiro Yamada