linux-kernel - Re: [PATCH/RFC] clk: gate: Add some kunit test suites

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Message-ID: <CAFd5g46JHKmrEbYeL_Yu8djPHr-6QwidumLKtdYoYOwC_ALpaQ@mail.gmail.com>
Date:   Thu, 9 Apr 2020 13:09:03 -0700
From:   Brendan Higgins <brendanhiggins@...gle.com>
To:     Stephen Boyd <sboyd@...nel.org>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-clk@...r.kernel.org,
        KUnit Development <kunit-dev@...glegroups.com>
Subject: Re: [PATCH/RFC] clk: gate: Add some kunit test suites

On Tue, Apr 7, 2020 at 8:56 PM Stephen Boyd <sboyd@...nel.org> wrote:
>
> Test various parts of the clk gate implementation with the kunit testing
> framework.
>
> Cc: Brendan Higgins <brendanhiggins@...gle.com>
> Cc: <kunit-dev@...glegroups.com>
> Signed-off-by: Stephen Boyd <sboyd@...nel.org>

One very minor nit below, other than that this looks great! I couldn't
have done a better job myself.

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

> ---
>
> This patch is on top of this series[1] that allows the clk
> framework to be selected by Kconfig language.
>
> [1] https://lore.kernel.org/r/20200405025123.154688-1-sboyd@kernel.org
>
>  drivers/clk/Kconfig         |   8 +
>  drivers/clk/Makefile        |   1 +
>  drivers/clk/clk-gate-test.c | 481 ++++++++++++++++++++++++++++++++++++
>  3 files changed, 490 insertions(+)
>  create mode 100644 drivers/clk/clk-gate-test.c
>
> diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
> index 6ea0631e3956..66193673bcdf 100644
> --- a/drivers/clk/Kconfig
> +++ b/drivers/clk/Kconfig
> @@ -377,4 +377,12 @@ source "drivers/clk/ti/Kconfig"
>  source "drivers/clk/uniphier/Kconfig"
>  source "drivers/clk/zynqmp/Kconfig"
>
> +# Kunit test cases

Minor nit: Elsewhere you use KUnit.

I wasn't going to say anything because so many people go with the
"Kunit" capitalization (and actually I kind of prefer it), but you
should at least be consistent within your patch.

> +config CLK_GATE_TEST
> +       tristate "Basic gate type Kunit test"
> +       depends on KUNIT
> +       default KUNIT
> +       help
> +         Kunit test for the basic clk gate type.
> +
>  endif
> diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
> index f4169cc2fd31..0785092880fd 100644
> --- a/drivers/clk/Makefile
> +++ b/drivers/clk/Makefile
> @@ -7,6 +7,7 @@ obj-$(CONFIG_COMMON_CLK)        += clk-divider.o
>  obj-$(CONFIG_COMMON_CLK)       += clk-fixed-factor.o
>  obj-$(CONFIG_COMMON_CLK)       += clk-fixed-rate.o
>  obj-$(CONFIG_COMMON_CLK)       += clk-gate.o
> +obj-$(CONFIG_CLK_GATE_TEST)    += clk-gate-test.o
>  obj-$(CONFIG_COMMON_CLK)       += clk-multiplier.o
>  obj-$(CONFIG_COMMON_CLK)       += clk-mux.o
>  obj-$(CONFIG_COMMON_CLK)       += clk-composite.o
> diff --git a/drivers/clk/clk-gate-test.c b/drivers/clk/clk-gate-test.c
> new file mode 100644
> index 000000000000..b1d6c21e9698
> --- /dev/null
> +++ b/drivers/clk/clk-gate-test.c
> @@ -0,0 +1,481 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * KUnit test for clk gate basic type

Here is the other capitalization.

> + */
> +#include <linux/clk.h>
> +#include <linux/clk-provider.h>
> +#include <linux/platform_device.h>
> +
> +#include <kunit/test.h>

[...]

Cheers!