linux-kernel - Re: [PATCH] drm/tests: Add back seed value information

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Date:   Wed, 26 Oct 2022 18:38:38 -0300
From:   André Almeida <andrealmeid@...eup.net>
To:     Arthur Grillo <arthurgrillo@...eup.net>
Cc:     dri-devel@...ts.freedesktop.org,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        Toke Høiland-Jørgensen <toke@...e.dk>,
        Maíra Canal <mairacanal@...eup.net>,
        Javier Martinez Canillas <javierm@...hat.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...il.com>, linux-kernel@...r.kernel.org,
        David Gow <davidgow@...gle.com>,
        Daniel Latypov <dlatypov@...gle.com>, melissa.srw@...il.com,
        Michał Winiarski <michal.winiarski@...el.com>
Subject: Re: [PATCH] drm/tests: Add back seed value information

Hi Grillo :)

On 10/26/22 18:14, Arthur Grillo wrote:
> As reported by Michał the drm_mm and drm_buddy unit tests lost the
> printk with seed value after they being refactored into kunit. This
> patch adds back this important information to assure reproducibility
> converting them to use the kunit api.
> 

You should write you commit message in imperative form, like "Add back 
this important [...]"

> Signed-off-by: Arthur Grillo <arthurgrillo@...eup.net>
> Reported-by: Michał Winiarski <michal.winiarski@...el.com>
> ---
>   drivers/gpu/drm/tests/drm_buddy_test.c | 3 +++
>   drivers/gpu/drm/tests/drm_mm_test.c    | 4 +++-
>   2 files changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/tests/drm_buddy_test.c b/drivers/gpu/drm/tests/drm_buddy_test.c
> index 62f69589a72d..83c8863bc643 100644
> --- a/drivers/gpu/drm/tests/drm_buddy_test.c
> +++ b/drivers/gpu/drm/tests/drm_buddy_test.c
> @@ -731,6 +731,9 @@ static int drm_buddy_init_test(struct kunit *test)
>   	while (!random_seed)
>   		random_seed = get_random_u32();
>   
> +	kunit_info("Testing DRM buddy manager (struct drm_buddy), with random_seed=0x%x\n",

DRM buddy manager (struct drm_buddy)

seems a bit redundant to me.

> +		random_seed);
> +
>   	return 0;
>   }
>   
> diff --git a/drivers/gpu/drm/tests/drm_mm_test.c b/drivers/gpu/drm/tests/drm_mm_test.c
> index c4b66eeae203..492347069d58 100644
> --- a/drivers/gpu/drm/tests/drm_mm_test.c
> +++ b/drivers/gpu/drm/tests/drm_mm_test.c
> @@ -2214,6 +2214,9 @@ static int drm_mm_init_test(struct kunit *test)
>   	while (!random_seed)
>   		random_seed = get_random_u32();
>   
> +	kunit_info("Testing DRM range manager (struct drm_mm), with random_seed=0x%x max_iterations=%u max_prime=%u\n",
> +	random_seed, max_iterations, max_prime);
> +
>   	return 0;
>   }
>   
> @@ -2251,6 +2254,5 @@ static struct kunit_suite drm_mm_test_suite = {
>   };
>   
>   kunit_test_suite(drm_mm_test_suite);
> -
>   MODULE_AUTHOR("Intel Corporation");
>   MODULE_LICENSE("GPL");