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SubjectRe: [PATCH] kconfig: Add findconf script and helper program

On 6/8/22 02:54, Zev Weiss wrote:
> scripts/findconf provides menuconfig's search functionality as a
> standalone, non-interactive command, somewhat in the spirit of
> scripts/config. It is meant to be useful for tasks like getting a
> quick overview of symbol dependencies or determining which Kconfig
> file to edit for a given symbol, without having to fire up one of the
> interactive config programs.
> It accepts a single command-line flag, '-v', which causes it to also
> print the help text of each matching result.
> Signed-off-by: Zev Weiss <>
> ---

I can see how this could be useful.
It's a little easier to use than what I currently do:

$ findconfig DRM_HISI_HIBMC
./drivers/gpu/drm/hisilicon/hibmc/Kconfig:2:config DRM_HISI_HIBMC

then $EDITOR that_Kconfig_file

In testing, I am seeing this:

# using defaults found in /boot/config-5.3.18-150300.59.63-default
.config:421:warning: symbol value 'm' invalid for I8K
.config:2335:warning: symbol value 'm' invalid for MTD_NAND_ECC_SW_HAMMING
.config:2484:warning: symbol value 'm' invalid for PVPANIC
.config:8671:warning: symbol value 'm' invalid for INTERCONNECT
.config:9369:warning: symbol value 'm' invalid for CRYPTO_ARCH_HAVE_LIB_BLAKE2S
.config:9370:warning: symbol value 'm' invalid for CRYPTO_LIB_BLAKE2S_GENERIC
.config:9653:warning: symbol value '1' invalid for KASAN_STACK

How do I specify/choose a .config file to be used?

Oh, use KCONFIG_CONFIG=filename

Please update (add) usage/help text in scripts/kconfig/Makefile.

> This works a bit differently from [gmnq]conf in that it accepts (and
> requires) arguments, but I couldn't see an easy/obvious way of passing
> command-line args through the makefile infrastructure that invokes
> those, so the wrapper script passes things to it via environment
> variables instead. Suggestions welcome if there's a nicer way of
> achieving that.
> scripts/findconf | 22 ++++++++++++
> scripts/kconfig/.gitignore | 1 +
> scripts/kconfig/Makefile | 7 +++-
> scripts/kconfig/findconf.c | 74 ++++++++++++++++++++++++++++++++++++++
> scripts/kconfig/lkc.h | 1 +
> scripts/kconfig/menu.c | 2 +-
> 6 files changed, 105 insertions(+), 2 deletions(-)
> create mode 100755 scripts/findconf
> create mode 100644 scripts/kconfig/findconf.c


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