linux-kernel - Re: [PATCH 3/3] checkpatch: kconfig: prefer 'help' over '---help---'

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Date:   Fri, 23 Mar 2018 00:19:40 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Ulf Magnusson <ulfalizer@...il.com>
Cc:     Robo Bot <apw@...onical.com>, Joe Perches <joe@...ches.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>
Subject: Re: [PATCH 3/3] checkpatch: kconfig: prefer 'help' over '---help---'

2018-02-17 5:22 GMT+09:00 Ulf Magnusson <ulfalizer@...il.com>:
> IMO, we should discourage '---help---' for new help texts, even in cases
> where it would be consistent with other help texts in the file. This
> will help if we ever want to get rid of '---help---' in the future.
>
> Also simplify the code to only check for exactly '---help---'. Since
> commit c2264564df3d ("kconfig: warn of unhandled characters in Kconfig
> commands"), '---help---' is a proper keyword and can only appear in that
> form. Prior to that commit, '---help---' working was more of a syntactic
> quirk.
>
> Signed-off-by: Ulf Magnusson <ulfalizer@...il.com>
> ---
>  scripts/checkpatch.pl | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 54b782fab4fd..2784f6ab309f 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -2817,7 +2817,11 @@ sub process {
>
>                                 if ($lines[$ln - 1] =~ /^\+\s*(?:bool|tristate|prompt)\s*["']/) {
>                                         $is_start = 1;
> -                               } elsif ($lines[$ln - 1] =~ /^\+\s*(?:---)?help(?:---)?$/) {
> +                               } elsif ($lines[$ln - 1] =~ /^\+\s*(?:help|---help---)\s*$/) {
> +                                       if ($lines[$ln - 1] =~ "---help---") {
> +                                               WARN("CONFIG_DESCRIPTION",
> +                                                    "prefer 'help' over '---help---' for new help texts\n" . $herecurr);
> +                                       }
>                                         $length = -1;
>                                 }
>


I applied this, but perhaps the line number for the offending part
could be improved.

The warning looks like this.


WARNING: prefer 'help' over '---help---' for new help texts
#1109: FILE: init/Kconfig:1109:
+config SGETMASK_SYSCALL


The #1109 points to the line of the symbol start.
IMHO, it is even better to point to the '---help---' line.




-- 
Best Regards
Masahiro Yamada