linux-kernel - Re: [PATCH 07/13] kconfig: move conf_set_all_new

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Message-ID: <CAK7LNASLx+C2C7M7kNMhRz=W4SbvtKQ8Hca_hbzkU8JY0z9nww@mail.gmail.com>
Date:   Tue, 16 Mar 2021 01:02:13 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Boris Kolpackov <boris@...esynthesis.com>
Cc:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 07/13] kconfig: move conf_set_all_new_symbols() to conf.c

On Mon, Mar 15, 2021 at 7:07 PM Boris Kolpackov <boris@...esynthesis.com> wrote:
>
> Masahiro Yamada <masahiroy@...nel.org> writes:
>
> > This function is only used in conf.c. Move it there together with the
> > randomize_choice_values() helper.
> >
> > [...]
> >
> > diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
> > index f946ab49ef50..d0d5acecb530 100644
> > --- a/scripts/kconfig/lkc.h
> > +++ b/scripts/kconfig/lkc.h
> > @@ -57,7 +57,6 @@ const char *zconf_curname(void);
> >  const char *conf_get_configname(void);
> >  void sym_set_change_count(int count);
> >  void sym_add_change_count(int count);
> > -bool conf_set_all_new_symbols(enum conf_def_mode mode);
> >  void set_all_choice_values(struct symbol *csym);
>
> A number of people package kconfig as a library that is then used
> in various projects outside of the Linux kernel. Removing this
> function breaks the library ABI and potentially such project. For
> example, I call conf_set_all_new_symbols() from my libbuild2-kconfig
> build system module[1].


There is no such ABI in Kconfig.


> I know you don't care much for such out-of-kernel usage, still, this
> (and the previous commit) feels like superficial reshuffling of code
> and perhaps it's worth not breaking things unless there is something
> substantial to gain?
>
> [1] https://github.com/build2/libbuild2-kconfig/blob/master/libbuild2-kconfig/libbuild2/kconfig/init.cxx#L938


confdata.c is linked to all flavors of Kconfig
(conf, mconf, gconf, and qconf).

conf_set_all_new_symbols() and randomize_choice_values()
are apparently only used by the text-base conf.
They need to go to the correct location.



-- 
Best Regards
Masahiro Yamada