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Message-ID: <CAK7LNAQV2X94rQP4exP8Kujjm-6FAt_pHoGF6dtHx5qZgAWDxg@mail.gmail.com>
Date: Mon, 4 Nov 2019 11:20:25 +0900
From: Masahiro Yamada <yamada.masahiro@...ionext.com>
To: Laura Abbott <labbott@...hat.com>
Cc: Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Jeremy Cline <jcline@...hat.com>,
Don Zickus <dzickus@...hat.com>
Subject: Re: [RFC PATCH] kconfig: Add option to get the full help text with listnewconfig
On Wed, Oct 30, 2019 at 3:17 AM Laura Abbott <labbott@...hat.com> wrote:
>
> make listnewconfig will list the individual options that need to be set.
> This is useful but there's no easy way to get the help text associated
> with the options at the same time. Introduce a new targe
> 'make extendedlistnewconfig' which lists the full help text of all the
> new options as well. This makes it easier to automatically generate
> changes that are easy for humans to review. This command also adds
> markers between each option for easier parsing.
>
> Signed-off-by: Laura Abbott <labbott@...hat.com>
> ---
> Red Hat has been relying on some external libraries that have a tendency
> to break to get the help text for all new config options. I'd really
> like an in tree way to get the help text so we can automatically
> generate patches for people to reveiw new config options. I'm open to
> other approaches that let us script getting the help text as well.
I am not familiar with the workflow in Red Hat.
I cannot propose another approach.
I am not a big fan of the target name.
'extendedlistnewconfig' is so long that it breaks the
alignment of 'make help'.
Maybe 'helpnewconfig' is understandable
although I am open to discussion for a better name.
BTW, did you check how the newly-added 'choice' was displayed?
Its help message is displayed, but the choice has no name.
So, people might be confused what the help message is talking about.
> ---
> scripts/kconfig/Makefile | 5 ++++-
> scripts/kconfig/conf.c | 13 ++++++++++++-
> 2 files changed, 16 insertions(+), 2 deletions(-)
>
> diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
> index ef2f2336c469..aaaf1f62300c 100644
> --- a/scripts/kconfig/Makefile
> +++ b/scripts/kconfig/Makefile
> @@ -66,7 +66,9 @@ localyesconfig localmodconfig: $(obj)/conf
> # syncconfig has become an internal implementation detail and is now
> # deprecated for external use
> simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
> - alldefconfig randconfig listnewconfig olddefconfig syncconfig
> + alldefconfig randconfig listnewconfig olddefconfig syncconfig \
> + extendedlistnewconfig
> +
> PHONY += $(simple-targets)
>
> $(simple-targets): $(obj)/conf
> @@ -134,6 +136,7 @@ help:
> @echo ' alldefconfig - New config with all symbols set to default'
> @echo ' randconfig - New config with random answer to all options'
> @echo ' listnewconfig - List new options'
> + @echo ' extendedlistnewconfig - List new options'
> @echo ' olddefconfig - Same as oldconfig but sets new symbols to their'
> @echo ' default value without prompting'
> @echo ' kvmconfig - Enable additional options for kvm guest kernel support'
> diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
> index 40e16e871ae2..7aeb77374d9a 100644
> --- a/scripts/kconfig/conf.c
> +++ b/scripts/kconfig/conf.c
> @@ -32,6 +32,7 @@ enum input_mode {
> defconfig,
> savedefconfig,
> listnewconfig,
> + extendedlistnewconfig,
> olddefconfig,
> };
> static enum input_mode input_mode = oldaskconfig;
> @@ -434,6 +435,11 @@ static void check_conf(struct menu *menu)
> printf("%s%s=%s\n", CONFIG_, sym->name, str);
> }
> }
> + } else if (input_mode == extendedlistnewconfig) {
> + printf("-----\n");
> + print_help(menu);
> + printf("-----\n");
> +
> } else {
> if (!conf_cnt++)
> printf("*\n* Restart config...\n*\n");
> @@ -459,6 +465,7 @@ static struct option long_opts[] = {
> {"alldefconfig", no_argument, NULL, alldefconfig},
> {"randconfig", no_argument, NULL, randconfig},
> {"listnewconfig", no_argument, NULL, listnewconfig},
> + {"extendedlistnewconfig", no_argument, NULL, extendedlistnewconfig},
> {"olddefconfig", no_argument, NULL, olddefconfig},
> {NULL, 0, NULL, 0}
> };
> @@ -469,6 +476,7 @@ static void conf_usage(const char *progname)
> printf("Usage: %s [-s] [option] <kconfig-file>\n", progname);
> printf("[option] is _one_ of the following:\n");
> printf(" --listnewconfig List new options\n");
> + printf(" --extendedlistnewconfig List new options and help text\n");
> printf(" --oldaskconfig Start a new configuration using a line-oriented program\n");
> printf(" --oldconfig Update a configuration using a provided .config as base\n");
> printf(" --syncconfig Similar to oldconfig but generates configuration in\n"
> @@ -543,6 +551,7 @@ int main(int ac, char **av)
> case allmodconfig:
> case alldefconfig:
> case listnewconfig:
> + case extendedlistnewconfig:
> case olddefconfig:
> break;
> case '?':
> @@ -576,6 +585,7 @@ int main(int ac, char **av)
> case oldaskconfig:
> case oldconfig:
> case listnewconfig:
> + case extendedlistnewconfig:
> case olddefconfig:
> conf_read(NULL);
> break;
> @@ -657,6 +667,7 @@ int main(int ac, char **av)
> /* fall through */
> case oldconfig:
> case listnewconfig:
> + case extendedlistnewconfig:
> case syncconfig:
> /* Update until a loop caused no more changes */
> do {
> @@ -675,7 +686,7 @@ int main(int ac, char **av)
> defconfig_file);
> return 1;
> }
> - } else if (input_mode != listnewconfig) {
> + } else if (input_mode != listnewconfig && input_mode != extendedlistnewconfig) {
> if (!no_conf_write && conf_write(NULL)) {
> fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
> exit(1);
> --
> 2.21.0
>
--
Best Regards
Masahiro Yamada
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