Re: [PATCH v3] kbuild: Show marked Kconfig fragments in "help"

[Masahiro Yamada]

On Sat, Sep 2, 2023 at 4:50 AM Kees Cook <keescook@xxxxxxxxxxxx> wrote:
>
> On Fri, Sep 01, 2023 at 04:58:37PM +0900, Masahiro Yamada wrote:
> > On Fri, Sep 1, 2023 at 4:13 AM Kees Cook <keescook@xxxxxxxxxxxx> wrote:
> > >
> > > Currently the Kconfig fragments in kernel/configs and arch/*/configs
> > > that aren't used internally aren't discoverable through "make help",
> > > which consists of hard-coded lists of config fragments. Instead, list
> > > all the fragment targets that have a "# Help: " comment prefix so the
> > > targets can be generated dynamically.
> > >
> > > Add logic to the Makefile to search for and display the fragment and
> > > comment. Add comments to fragments that are intended to be direct targets.
> > >
> > > Cc: Nicolas Schier <nicolas@xxxxxxxxx>
> > > Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
> > > Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
> > > Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
> > > Cc: linux-kernel@xxxxxxxxxxxxxxx
> > > Cc: x86@xxxxxxxxxx
> > > Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> > > Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
> > > Cc: linux-riscv@xxxxxxxxxxxxxxxxxxx
> > > Cc: linux-s390@xxxxxxxxxxxxxxx
> > > Cc: linux-kbuild@xxxxxxxxxxxxxxx
> > > Cc: linux-hardening@xxxxxxxxxxxxxxx
> > > Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
> > > Co-developed-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
> > > ---
> > > v3:
> > > - Use Makefile logic from Masahiro Yamada
> > > - Use "# Help: " prefix, but only on desired fragment targets
> > > v2: https://lore.kernel.org/all/20230825194329.gonna.911-kees@xxxxxxxxxx
> > > v1: https://lore.kernel.org/all/20230824223606.never.762-kees@xxxxxxxxxx
> > > ---
> > >  Makefile                                   |  1 -
> > >  arch/arm/configs/dram_0x00000000.config    |  1 +
> > >  arch/arm/configs/dram_0xc0000000.config    |  1 +
> > >  arch/arm/configs/dram_0xd0000000.config    |  1 +
> > >  arch/arm/configs/lpae.config               |  1 +
> > >  arch/arm64/configs/virt.config             |  1 +
> > >  arch/powerpc/configs/disable-werror.config |  1 +
> > >  arch/powerpc/configs/security.config       |  4 +++-
> > >  arch/riscv/configs/32-bit.config           |  1 +
> > >  arch/riscv/configs/64-bit.config           |  1 +
> > >  arch/s390/configs/btf.config               |  1 +
> > >  arch/s390/configs/kasan.config             |  1 +
> > >  arch/x86/Makefile                          |  4 ----
> > >  kernel/configs/debug.config                |  2 ++
> > >  kernel/configs/kvm_guest.config            |  1 +
> > >  kernel/configs/nopm.config                 |  2 ++
> > >  kernel/configs/rust.config                 |  1 +
> > >  kernel/configs/tiny.config                 |  2 ++
> > >  kernel/configs/x86_debug.config            |  1 +
> > >  kernel/configs/xen.config                  |  2 ++
> > >  scripts/kconfig/Makefile                   | 15 ++++++++++++---
> > >  21 files changed, 36 insertions(+), 9 deletions(-)
> > >
> >
> >
> > Just one thing.
> >
> >
> >
> >
> >
> > > diff --git a/kernel/configs/tiny.config b/kernel/configs/tiny.config
> > > index 00009f7d0835..60a4b6d80b36 100644
> > > --- a/kernel/configs/tiny.config
> > > +++ b/kernel/configs/tiny.config
> > > @@ -1,3 +1,5 @@
> > > +# Help: Size-optimized kernel image
> >
> >
> > I will drop this.
> >
> >
> > We already have a hard-coded help message.
> >
> >   tinyconfig   - Configure the tiniest possible kernel
> >
> >
> >
> >
> > Then, some lines below, again.
> >
> >   tiny.config               - Size-optimized kernel image
> >
> >
> >
> > tiny.config is for internal use for tinyconfig.
>
> Shall I send a v4, or did you fix this up already?


Locally fixed-up.

If nobody points out anything else,
you do not need to send v4.





-- 
Best Regards
Masahiro Yamada