Re: [PATCH v2] drm/tests: Split up test cases in igt_check_drm_format_min_pitch

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On 07/29, Maíra Canal wrote:
> The igt_check_drm_format_min_pitch() function had a lot of
> KUNIT_EXPECT_* calls, all of which ended up allocating and initializing
> various test assertion structures on the stack.
> 
> This behavior was producing -Wframe-larger-than warnings on PowerPC, i386,
> and MIPS architectures, such as:
> 
> drivers/gpu/drm/tests/drm_format_test.c: In function 'igt_check_drm_format_min_pitch':
> drivers/gpu/drm/tests/drm_format_test.c:271:1: error: the frame size of
> 3712 bytes is larger than 2048 bytes
> 
> So, the igt_check_drm_format_min_pitch() test case was split into three
> smaller functions: one testing single plane formats, one testing
> multi-planar formats, and the other testing tiled formats.
> 
> Fixes: 0421bb0baa84 ("drm: selftest: convert drm_format selftest to KUnit")
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Reported-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> Signed-off-by: Maíra Canal <mairacanal@xxxxxxxxxx>
> Tested-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> Reviewed-by: André Almeida <andrealmeid@xxxxxxxxxx>

Applied to drm-misc-next

Thanks,

Melissa
> ---
> v1 -> v2:
> - Add Guenter's Tested-by tag.
> - Add André's Reviewed-by tag.
> - Replace "multiple planes" for "multi-planar" (André Almeida).
> - Add Fixes tag (Melissa Wen).
> ---
>  drivers/gpu/drm/tests/drm_format_test.c | 16 ++++++++++++++--
>  1 file changed, 14 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/tests/drm_format_test.c b/drivers/gpu/drm/tests/drm_format_test.c
> index 056cb8599d6d..afb4bca72187 100644
> --- a/drivers/gpu/drm/tests/drm_format_test.c
> +++ b/drivers/gpu/drm/tests/drm_format_test.c
> @@ -91,7 +91,7 @@ static void igt_check_drm_format_block_height(struct kunit *test)
>  	KUNIT_EXPECT_FALSE(test, drm_format_info_block_height(info, -1));
>  }
>  
> -static void igt_check_drm_format_min_pitch(struct kunit *test)
> +static void igt_check_drm_format_min_pitch_for_single_plane(struct kunit *test)
>  {
>  	const struct drm_format_info *info = NULL;
>  
> @@ -175,6 +175,11 @@ static void igt_check_drm_format_min_pitch(struct kunit *test)
>  			(uint64_t)UINT_MAX * 4);
>  	KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, (UINT_MAX - 1)),
>  			(uint64_t)(UINT_MAX - 1) * 4);
> +}
> +
> +static void igt_check_drm_format_min_pitch_for_multi_planar(struct kunit *test)
> +{
> +	const struct drm_format_info *info = NULL;
>  
>  	/* Test 2 planes format */
>  	info = drm_format_info(DRM_FORMAT_NV12);
> @@ -249,6 +254,11 @@ static void igt_check_drm_format_min_pitch(struct kunit *test)
>  			(uint64_t)(UINT_MAX - 1) / 2);
>  	KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 2, (UINT_MAX - 1) / 2),
>  			(uint64_t)(UINT_MAX - 1) / 2);
> +}
> +
> +static void igt_check_drm_format_min_pitch_for_tiled_format(struct kunit *test)
> +{
> +	const struct drm_format_info *info = NULL;
>  
>  	/* Test tiled format */
>  	info = drm_format_info(DRM_FORMAT_X0L2);
> @@ -273,7 +283,9 @@ static void igt_check_drm_format_min_pitch(struct kunit *test)
>  static struct kunit_case drm_format_tests[] = {
>  	KUNIT_CASE(igt_check_drm_format_block_width),
>  	KUNIT_CASE(igt_check_drm_format_block_height),
> -	KUNIT_CASE(igt_check_drm_format_min_pitch),
> +	KUNIT_CASE(igt_check_drm_format_min_pitch_for_single_plane),
> +	KUNIT_CASE(igt_check_drm_format_min_pitch_for_multi_planar),
> +	KUNIT_CASE(igt_check_drm_format_min_pitch_for_tiled_format),
>  	{ }
>  };
>  
> -- 
> 2.37.1
> 

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