linux-kernel - Re: [PATCH] merge_config.sh: do not report some differencess between input and output

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Date:   Sun, 5 Feb 2023 03:49:37 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Łukasz Stelmach <l.stelmach@...sung.com>
Cc:     Marek Szyprowski <m.szyprowski@...sung.com>,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] merge_config.sh: do not report some differencess between
 input and output

On Fri, Feb 3, 2023 at 9:32 PM Łukasz Stelmach <l.stelmach@...sung.com> wrote:
>
> If an input config file contains CONFIG_FOO=n the output one
> will contain a line '# CONFIG_FOO is not set'. merge_config.sh
> should not report it as difference because the end result of
> CONFIG_FOO being disabled is achieved.
>
> Inexistence of CONFIG_FOO (because of unment dependencies) in case
> CONFIG_FOO=n is requested, should also be ignored.
>
> Signed-off-by: Łukasz Stelmach <l.stelmach@...sung.com>
> ---
>  scripts/kconfig/merge_config.sh | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/scripts/kconfig/merge_config.sh b/scripts/kconfig/merge_config.sh
> index e5b46980c22a..c6fd6722f1a4 100755
> --- a/scripts/kconfig/merge_config.sh
> +++ b/scripts/kconfig/merge_config.sh
> @@ -196,9 +196,13 @@ for CFG in $(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $TMP_FILE); do
>         REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
>         ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG" || true)
>         if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
> -               echo "Value requested for $CFG not in final .config"
> -               echo "Requested value:  $REQUESTED_VAL"
> -               echo "Actual value:     $ACTUAL_VAL"
> -               echo ""
> +               if [ "x$REQUESTED_VAL" != "x$CFG=n" -o \
> +                    \( "x$ACTUAL_VAL" != "x"  -a \
> +                       "x$ACTUAL_VAL" != "x# $CFG is not set" \) ]; then
> +                       echo "Value requested for $CFG not in final .config"
> +                       echo "Requested value:  $REQUESTED_VAL"
> +                       echo "Actual value:     $ACTUAL_VAL"
> +                       echo ""
> +               fi
>         fi
>  done
> --
> 2.30.2
>



[Problem 1]

The behaviour is inconsistent
between =n and "is not set".



 Requested: CONFIG_FOO=n
 Actual   : missing due to unmet dep

     -> suppress the report


 Requested: CONFIG_FOO is not set
 Actual   : missing due to unmet dep

     -> show the report



[Problem 2]

This patch introduces another consistency
because line 148 may report something similar.





--
Best Regards
Masahiro Yamada