Re: [PATCH v7 06/18] kbuild: enable building KUnit

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On Tue, Jul 9, 2019 at 3:34 PM Brendan Higgins
<brendanhiggins@xxxxxxxxxx> wrote:
>
> KUnit is a new unit testing framework for the kernel and when used is
> built into the kernel as a part of it. Add KUnit to the root Kconfig and
> Makefile to allow it to be actually built.
>
> Signed-off-by: Brendan Higgins <brendanhiggins@xxxxxxxxxx>
> Cc: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
> Cc: Michal Marek <michal.lkml@xxxxxxxxxxx>
> Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Reviewed-by: Logan Gunthorpe <logang@xxxxxxxxxxxx>
> ---
>  Kconfig  | 2 ++
>  Makefile | 2 +-
>  2 files changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/Kconfig b/Kconfig
> index 48a80beab6853..10428501edb78 100644
> --- a/Kconfig
> +++ b/Kconfig
> @@ -30,3 +30,5 @@ source "crypto/Kconfig"
>  source "lib/Kconfig"
>
>  source "lib/Kconfig.debug"
> +
> +source "kunit/Kconfig"
> diff --git a/Makefile b/Makefile
> index 3e4868a6498b2..60cf4f0813e0d 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -991,7 +991,7 @@ endif
>  PHONY += prepare0
>
>  ifeq ($(KBUILD_EXTMOD),)
> -core-y         += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/
> +core-y         += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ kunit/
>
>  vmlinux-dirs   := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
>                      $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
> --
> 2.22.0.410.gd8fdbe21b5-goog


This is so trivial, and do not need to get ack from me.

Just a nit.


When CONFIG_KUNIT is disable, is there any point in descending into kunit/ ?

core-$(CONFIG_KUNIT) += kunit/

... might be useful to skip kunit/ entirely.

If you look at the top-level Makefile, some entries are doing this:


init-y          := init/
drivers-y       := drivers/ sound/
drivers-$(CONFIG_SAMPLES) += samples/
drivers-$(CONFIG_KERNEL_HEADER_TEST) += include/
net-y           := net/
libs-y          := lib/
core-y          := usr/





--
Best Regards
Masahiro Yamada



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