linux-kernel - Re: [PATCH v15 06/10] iio: test: add basic tests for the iio-rescale driver

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Message-ID: <CAMuHMdVMhLRS+XuX_8O5UPHzoOp6a6XpTvysQS+nT+GLkL7gjQ@mail.gmail.com>
Date:   Mon, 27 Jun 2022 09:22:29 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Liam Beguin <liambeguin@...il.com>
Cc:     Peter Rosin <peda@...ntia.se>, Jonathan Cameron <jic23@...nel.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-iio@...r.kernel.org,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH v15 06/10] iio: test: add basic tests for the iio-rescale driver

Hi Liam,

On Mon, Feb 14, 2022 at 12:00 AM Liam Beguin <liambeguin@...il.com> wrote:
> The iio-rescale driver supports various combinations of scale types and
> offsets. These can often result in large integer multiplications. Make
> sure these calculations are done right by adding a set of kunit test
> cases that build on top of iio-test-format.
>
> To run these tests, add the following to .kunitconfig
>         $ cat .kunitconfig
>         CONFIG_IIO=y
>         CONFIG_IIO_RESCALE_KUNIT_TEST=y
>         CONFIG_KUNIT=y
>
> Then run:
>         $ ./tools/testing/kunit/kunit.py run --kunitconfig .kunitconfig
>
> Signed-off-by: Liam Beguin <liambeguin@...il.com>
> Reviewed-by: Peter Rosin <peda@...ntia.se>

Thanks for your patch, which is now commit 8e74a48d17d509bf
("iio: test: add basic tests for the iio-rescale driver") in v5.18.

> --- a/drivers/iio/test/Kconfig
> +++ b/drivers/iio/test/Kconfig
> @@ -4,6 +4,16 @@
>  #
>
>  # Keep in alphabetical order
> +config IIO_RESCALE_KUNIT_TEST
> +       bool "Test IIO rescale conversion functions"

Is there any reason this cannot be tristate, so I can always enable
this as a module, and run the test by loading the module whenever
I want?

> +       depends on KUNIT && !IIO_RESCALE
> +       default KUNIT_ALL_TESTS
> +       help
> +         If you want to run tests on the iio-rescale code say Y here.
> +
> +         This takes advantage of ARCH=um to run tests and should be used by
> +         developers to tests their changes to the rescaling logic.
> +
>  config IIO_TEST_FORMAT
>          bool "Test IIO formatting functions"
>          depends on KUNIT=y

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds