linux-kernel - Re: [PATCH v2 08/17] drm/tests: helpers: Allow for a custom device struct to be allocated

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Message-ID: <a86a67d8-59dc-1af8-4176-b3236ef0f0a1@redhat.com>
Date:   Wed, 30 Nov 2022 10:13:39 +0100
From:   Javier Martinez Canillas <javierm@...hat.com>
To:     Maxime Ripard <maxime@...no.tech>, Daniel Vetter <daniel@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        David Airlie <airlied@...il.com>,
        Thomas Zimmermann <tzimmermann@...e.de>
Cc:     dri-devel@...ts.freedesktop.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        kunit-dev@...glegroups.com, linux-media@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linaro-mm-sig@...ts.linaro.org,
        Brendan Higgins <brendan.higgins@...ux.dev>,
        Maíra Canal <mairacanal@...eup.net>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        linux-kernel@...r.kernel.org, David Gow <davidgow@...gle.com>
Subject: Re: [PATCH v2 08/17] drm/tests: helpers: Allow for a custom device
 struct to be allocated

On 11/28/22 15:53, Maxime Ripard wrote:
> The current helper to allocate a DRM device doesn't allow for any
> subclassing by drivers, which is going to be troublesome as we work on
> getting some kunit testing on atomic modesetting code.
> 
> Let's use a similar pattern to the other allocation helpers by providing
> the structure size and offset as arguments.
> 
> Signed-off-by: Maxime Ripard <maxime@...no.tech>
> ---

[...]

> -EXPORT_SYMBOL(drm_kunit_helper_alloc_drm_device);
> +EXPORT_SYMBOL(__drm_kunit_helper_alloc_drm_device);
>

I'm not sure if I would add a __ prefix to exported symbols, but I see that
this is a convention in the DRM subsystem so I'm OK with it. 

Another thing that came to mind is if we want to use EXPORT_SYMBOL_GPL()
instead for the DRM KUnit helpers. But that's not related to this series.

Reviewed-by: Javier Martinez Canillas <javierm@...hat.com>  

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat