linux-kernel - Re: [PATCH 2/2] kunit: tool: add --kconfig_add to allow easily tweaking kunitconfigs

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Date:   Tue, 7 Dec 2021 17:47:12 -0500
From:   Brendan Higgins <brendanhiggins@...gle.com>
To:     Daniel Latypov <dlatypov@...gle.com>
Cc:     davidgow@...gle.com, linux-kernel@...r.kernel.org,
        kunit-dev@...glegroups.com, linux-kselftest@...r.kernel.org,
        skhan@...uxfoundation.org
Subject: Re: [PATCH 2/2] kunit: tool: add --kconfig_add to allow easily
 tweaking kunitconfigs

On Fri, Nov 5, 2021 at 9:31 PM 'Daniel Latypov' via KUnit Development
<kunit-dev@...glegroups.com> wrote:
>
> E.g. run tests but with KASAN
> $ ./tools/testing/kunit/kunit.py run --arch=x86_64 --kconfig_add=CONFIG_KASAN=y
>
> This also works with --kunitconfig
> $ ./tools/testing/kunit/kunit.py run --arch=x86_64 --kunitconfig=fs/ext4 --kconfig_add=CONFIG_KASAN=y
>
> This flag is inspired by TuxMake's --kconfig-add, see
> https://gitlab.com/Linaro/tuxmake#examples.
>
> Our version just uses "_" as the delimiter for consistency with
> pre-existing flags like --build_dir, --make_options, --kernel_args, etc.
>
> Note: this does make it easier to run into a pre-existing edge case:
> $ ./tools/testing/kunit/kunit.py run --arch=x86_64 --kconfig_add=CONFIG_KASAN=y
> $ ./tools/testing/kunit/kunit.py run --arch=x86_64
> This second invocation ^ still has KASAN enabled!
>
> kunit.py won't call olddefconfig if our current .config is already a
> superset of the provided kunitconfig.
>
> Signed-off-by: Daniel Latypov <dlatypov@...gle.com>

Reviewed-by: Brendan Higgins <brendanhiggins@...gle.com>