From: Matti Vaittinen <mazziesaccount@gmail.com>
To: David Gow <davidgow@google.com>
Cc: Maxime Ripard <maxime@cerno.tech>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Brendan Higgins <brendan.higgins@linux.dev>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
kunit-dev@googlegroups.com, Stephen Boyd <sboyd@kernel.org>,
Jonathan Cameron <jic23@kernel.org>,
linux-iio@vger.kernel.org
Subject: Re: [PATCH v5 1/8] drivers: kunit: Generic helpers for test device creation
Date: Fri, 24 Mar 2023 12:05:14 +0200 [thread overview]
Message-ID: <f0b4d2ad-9635-9ab8-7cd7-bfadded94714@gmail.com> (raw)
In-Reply-To: <CABVgOSmx3A4Vwos2_8xO-XQrQAw5gvY0nc5zLpLmcJ7FtA-dTQ@mail.gmail.com>
On 3/24/23 11:52, David Gow wrote:
> On Fri, 24 Mar 2023 at 14:51, Matti Vaittinen <mazziesaccount@gmail.com> wrote:
>>
>> On 3/24/23 08:34, David Gow wrote:
>>> On Fri, 24 Mar 2023 at 14:11, Matti Vaittinen <mazziesaccount@gmail.com> wrote:
>>> I think that sounds like a good strategy for now, and we can work on a
>>> set of 'generic helpers' which have an associated bus and struct
>>> kunit_device in the meantime. If we can continue to use
>>> root_device_register until those are ready, that'd be very convenient.
>>
>> Would it be a tiny bit more acceptable if we did add a very simple:
>>
>> #define kunit_root_device_register(name) root_device_register(name)
>> #define kunit_root_device_unregister(dev) root_device_unregister(dev)
>>
>> to include/kunit/device.h (or somesuch)
>>
>> This should help us later to at least spot the places where
>> root_device_[un]register() is abused and (potentially mass-)covert them
>> to use the proper helpers when they're available.
>>
>
> Great idea.
>
> The code I've been playing with has the following in include/kunit/device.h:
>
> /* Register a new device against a KUnit test. */
> struct device *kunit_device_register(struct kunit *test, const char *name);
> /* Unregister a device created by kunit_device_register() early (i.e.,
> before test cleanup). */
> void kunit_device_unregister(struct kunit *test, struct device *dev);
>
> If we used the same names, and just forwarded them to
> root_device_register() and root_device_unregister() for now
> (discarding the struct kunit pointer), then I expect we could just
> swap out the implementation to gain the extra functionality.
>
> It's a little less explicit, though, so I could see the value in using
> macros with "root_device" in the name to make the current
> implementation clearer, and the eventual change more obvious.
I think it makes sense to avoid the mass-conversions if the signatures
for kunit_device_register() and kunit_device_unregister() are expected
to be known by now. If there is no objections I'll add those wrappers +
the include/kunit/device.h to v6 of this series.
I think I'll try to hold back sending the v6 until next Monday - unless
I get really bored during the weekend ;)
Yours,
-- Matti
--
Matti Vaittinen
Linux kernel developer at ROHM Semiconductors
Oulu Finland
~~ When things go utterly wrong vim users can always type :help! ~~
next prev parent reply other threads:[~2023-03-24 10:05 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-22 9:05 [PATCH v5 0/8] Support ROHM BU27034 ALS sensor Matti Vaittinen
2023-03-22 9:05 ` [PATCH v5 1/8] drivers: kunit: Generic helpers for test device creation Matti Vaittinen
2023-03-22 12:04 ` Greg Kroah-Hartman
2023-03-22 12:07 ` Greg Kroah-Hartman
2023-03-22 13:48 ` Matti Vaittinen
2023-03-22 18:57 ` Greg Kroah-Hartman
2023-03-23 7:17 ` Vaittinen, Matti
2023-03-23 8:58 ` Greg Kroah-Hartman
2023-03-23 9:20 ` Matti Vaittinen
2023-03-23 10:25 ` Greg Kroah-Hartman
2023-03-23 10:43 ` Matti Vaittinen
2023-03-23 10:01 ` Matti Vaittinen
2023-03-23 10:27 ` Greg Kroah-Hartman
2023-03-23 11:00 ` Matti Vaittinen
2023-03-23 10:12 ` Maxime Ripard
2023-03-23 10:21 ` Greg Kroah-Hartman
2023-03-23 12:16 ` Matti Vaittinen
2023-03-23 12:29 ` Maxime Ripard
2023-03-23 13:02 ` Matti Vaittinen
2023-03-23 16:36 ` Maxime Ripard
2023-03-24 6:11 ` Matti Vaittinen
2023-03-24 6:34 ` David Gow
2023-03-24 6:51 ` Matti Vaittinen
2023-03-24 9:52 ` David Gow
2023-03-24 10:05 ` Matti Vaittinen [this message]
2023-03-24 10:17 ` Matti Vaittinen
2023-03-25 4:35 ` David Gow
2023-03-25 7:26 ` Matti Vaittinen
2023-03-24 12:46 ` Maxime Ripard
2023-03-24 12:31 ` Maxime Ripard
2023-03-25 5:40 ` David Gow
2023-03-29 19:43 ` Maxime Ripard
2023-03-25 17:50 ` Jonathan Cameron
2023-03-26 17:16 ` Lars-Peter Clausen
2023-04-01 15:30 ` Jonathan Cameron
2023-03-29 19:46 ` Maxime Ripard
2023-04-01 15:36 ` Jonathan Cameron
2023-03-24 12:36 ` Maxime Ripard
2023-03-24 12:43 ` Greg Kroah-Hartman
2023-03-24 13:02 ` Maxime Ripard
2023-03-24 13:42 ` Greg Kroah-Hartman
2023-03-22 12:08 ` Greg Kroah-Hartman
2023-03-23 7:30 ` David Gow
2023-03-23 8:35 ` Matti Vaittinen
2023-03-23 9:02 ` Greg Kroah-Hartman
2023-03-23 10:07 ` Maxime Ripard
2023-03-22 9:06 ` [PATCH v5 2/8] drm/tests: helpers: Use generic helpers Matti Vaittinen
2023-03-22 9:06 ` [PATCH v5 3/8] dt-bindings: iio: light: Support ROHM BU27034 Matti Vaittinen
2023-03-22 9:06 ` [PATCH v5 4/8] iio: light: Add gain-time-scale helpers Matti Vaittinen
2023-03-22 9:07 ` [PATCH v5 5/8] iio: test: test " Matti Vaittinen
2023-03-24 6:29 ` Matti Vaittinen
2023-03-22 9:07 ` [PATCH v5 6/8] MAINTAINERS: Add IIO " Matti Vaittinen
2023-03-22 9:07 ` [PATCH v5 7/8] iio: light: ROHM BU27034 Ambient Light Sensor Matti Vaittinen
2023-03-26 16:19 ` Jonathan Cameron
2023-03-27 7:16 ` Vaittinen, Matti
2023-03-22 9:08 ` [PATCH v5 8/8] MAINTAINERS: Add ROHM BU27034 Matti Vaittinen
2023-03-22 10:01 ` [PATCH v5 0/8] Support ROHM BU27034 ALS sensor Andy Shevchenko
2023-03-22 10:34 ` Javier Martinez Canillas
2023-03-22 10:59 ` Matti Vaittinen
2023-03-22 11:02 ` Andy Shevchenko
2023-03-23 9:28 ` Maxime Ripard
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