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Date: Wed, 10 Nov 2021 18:11:08 -0800
From: Daniel Latypov <dlatypov@...gle.com>
To: André Almeida <andrealmeid@...labora.com>
Cc: Daniel Vetter <daniel@...ll.ch>,
Shuah Khan <skhan@...uxfoundation.org>,
Brendan Higgins <brendanhiggins@...gle.com>,
David Gow <davidgow@...gle.com>, kunit-dev@...glegroups.com,
linux-kselftest@...r.kernel.org, dri-devel@...ts.freedesktop.org,
daniel@...ishbar.org, igt-dev@...ts.freedesktop.org,
leandro.ribeiro@...labora.com, n@...aprado.net,
rodrigosiqueiramelo@...il.com, melissa.srw@...il.com,
~lkcamp/discussion@...ts.sr.ht, isabbasso@...eup.net,
maira.canal@....br, arthur.grillo@....br,
linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 1/1] drm: selftest: convert drm_damage_helper selftest
to KUnit
On Wed, Nov 10, 2021 at 4:35 PM André Almeida <andrealmeid@...labora.com> wrote:
>
> From: Maíra Canal <maira.canal@....br>
>
> Considering the current adoption of the KUnit framework, convert the
> DRM damage helper selftest to the KUnit API.
Overall, this looks promising.
I have 2 small suggestions below about the test assertions.
Another suggestion: should we add a drivers/gpu/drm/.kunitconfig file?
See https://www.kernel.org/doc/html/latest/dev-tools/kunit/running_tips.html#defining-a-set-of-tests
That gives the example of
$ ./tools/testing/kunit/kunit.py run --kunitconfig=lib/kunit
That works by picking up the lib/kunit/.kunitconfig file.
Adding one for this test would make it easier for others to run these
tests, e.g. via
$ cat drivers/gpu/drm/.kunitconfig
CONFIG_KUNIT=y
CONFIG_DRM=y
CONFIG_DRM_DAMAGE_HELPER_KUNIT_TEST=y
$ ./tools/testing/kunit/kunit.py run --kunitconfig=drivers/gpu/drm --arch=x86_64
...
Testing complete. 21 tests run. 0 failed. 0 crashed. 0 skipped.
>
> Co-developed-by: Arthur Grillo <arthur.grillo@....br>
> Signed-off-by: Arthur Grillo <arthur.grillo@....br>
> Signed-off-by: Maíra Canal <maira.canal@....br>
> Signed-off-by: André Almeida <andrealmeid@...labora.com>
> ---
> drivers/gpu/drm/Kconfig | 13 ++
> drivers/gpu/drm/Makefile | 2 +-
> drivers/gpu/drm/selftests/Makefile | 5 +-
> .../gpu/drm/selftests/drm_modeset_selftests.h | 21 --
> .../drm/selftests/test-drm_damage_helper.c | 215 +++++++++---------
> 5 files changed, 127 insertions(+), 129 deletions(-)
>
> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> index cea777ae7fb9..56f6ca74ebb6 100644
> --- a/drivers/gpu/drm/Kconfig
> +++ b/drivers/gpu/drm/Kconfig
> @@ -79,6 +79,19 @@ config DRM_DEBUG_SELFTEST
>
> If in doubt, say "N".
>
> +config DRM_DAMAGE_HELPER_KUNIT_TEST
> + tristate "KUnit tests for DRM damage helper"
> + depends on DRM && KUNIT
> + select DRM_KMS_HELPER
> + default KUNIT_ALL_TESTS
> + help
> + This option provides a KUnit module that can be used to run
> + an unit test on the DRM damage helper API. This option is not
> + useful for distributions or general kernels, but only for kernel
> + developers working on DRM and associated drivers.
> +
> + If in doubt, say "N".
> +
> config DRM_KMS_HELPER
> tristate
> depends on DRM
> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> index ad1112154898..e632c43c9b7d 100644
> --- a/drivers/gpu/drm/Makefile
> +++ b/drivers/gpu/drm/Makefile
> @@ -58,7 +58,7 @@ drm_kms_helper-$(CONFIG_DRM_DP_AUX_CHARDEV) += drm_dp_aux_dev.o
> drm_kms_helper-$(CONFIG_DRM_DP_CEC) += drm_dp_cec.o
>
> obj-$(CONFIG_DRM_KMS_HELPER) += drm_kms_helper.o
> -obj-$(CONFIG_DRM_DEBUG_SELFTEST) += selftests/
> +obj-y += selftests/
>
> obj-$(CONFIG_DRM) += drm.o
> obj-$(CONFIG_DRM_MIPI_DBI) += drm_mipi_dbi.o
> diff --git a/drivers/gpu/drm/selftests/Makefile b/drivers/gpu/drm/selftests/Makefile
> index 0856e4b12f70..311f6af2caf1 100644
> --- a/drivers/gpu/drm/selftests/Makefile
> +++ b/drivers/gpu/drm/selftests/Makefile
> @@ -1,7 +1,8 @@
> # SPDX-License-Identifier: GPL-2.0-only
> test-drm_modeset-y := test-drm_modeset_common.o test-drm_plane_helper.o \
> test-drm_format.o test-drm_framebuffer.o \
> - test-drm_damage_helper.o test-drm_dp_mst_helper.o \
> - test-drm_rect.o
> + test-drm_dp_mst_helper.o test-drm_rect.o
>
> obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm_modeset.o test-drm_cmdline_parser.o
> +
> +obj-$(CONFIG_DRM_DAMAGE_HELPER_KUNIT_TEST) += test-drm_damage_helper.o
> diff --git a/drivers/gpu/drm/selftests/drm_modeset_selftests.h b/drivers/gpu/drm/selftests/drm_modeset_selftests.h
> index 782e285ca383..4787b3b70709 100644
> --- a/drivers/gpu/drm/selftests/drm_modeset_selftests.h
> +++ b/drivers/gpu/drm/selftests/drm_modeset_selftests.h
> @@ -15,26 +15,5 @@ selftest(check_drm_format_block_width, igt_check_drm_format_block_width)
> selftest(check_drm_format_block_height, igt_check_drm_format_block_height)
> selftest(check_drm_format_min_pitch, igt_check_drm_format_min_pitch)
> selftest(check_drm_framebuffer_create, igt_check_drm_framebuffer_create)
> -selftest(damage_iter_no_damage, igt_damage_iter_no_damage)
> -selftest(damage_iter_no_damage_fractional_src, igt_damage_iter_no_damage_fractional_src)
> -selftest(damage_iter_no_damage_src_moved, igt_damage_iter_no_damage_src_moved)
> -selftest(damage_iter_no_damage_fractional_src_moved, igt_damage_iter_no_damage_fractional_src_moved)
> -selftest(damage_iter_no_damage_not_visible, igt_damage_iter_no_damage_not_visible)
> -selftest(damage_iter_no_damage_no_crtc, igt_damage_iter_no_damage_no_crtc)
> -selftest(damage_iter_no_damage_no_fb, igt_damage_iter_no_damage_no_fb)
> -selftest(damage_iter_simple_damage, igt_damage_iter_simple_damage)
> -selftest(damage_iter_single_damage, igt_damage_iter_single_damage)
> -selftest(damage_iter_single_damage_intersect_src, igt_damage_iter_single_damage_intersect_src)
> -selftest(damage_iter_single_damage_outside_src, igt_damage_iter_single_damage_outside_src)
> -selftest(damage_iter_single_damage_fractional_src, igt_damage_iter_single_damage_fractional_src)
> -selftest(damage_iter_single_damage_intersect_fractional_src, igt_damage_iter_single_damage_intersect_fractional_src)
> -selftest(damage_iter_single_damage_outside_fractional_src, igt_damage_iter_single_damage_outside_fractional_src)
> -selftest(damage_iter_single_damage_src_moved, igt_damage_iter_single_damage_src_moved)
> -selftest(damage_iter_single_damage_fractional_src_moved, igt_damage_iter_single_damage_fractional_src_moved)
> -selftest(damage_iter_damage, igt_damage_iter_damage)
> -selftest(damage_iter_damage_one_intersect, igt_damage_iter_damage_one_intersect)
> -selftest(damage_iter_damage_one_outside, igt_damage_iter_damage_one_outside)
> -selftest(damage_iter_damage_src_moved, igt_damage_iter_damage_src_moved)
> -selftest(damage_iter_damage_not_visible, igt_damage_iter_damage_not_visible)
> selftest(dp_mst_calc_pbn_mode, igt_dp_mst_calc_pbn_mode)
> selftest(dp_mst_sideband_msg_req_decode, igt_dp_mst_sideband_msg_req_decode)
> diff --git a/drivers/gpu/drm/selftests/test-drm_damage_helper.c b/drivers/gpu/drm/selftests/test-drm_damage_helper.c
> index 1c19a5d3eefb..83905661d41e 100644
> --- a/drivers/gpu/drm/selftests/test-drm_damage_helper.c
> +++ b/drivers/gpu/drm/selftests/test-drm_damage_helper.c
> @@ -3,14 +3,11 @@
> * Test case for drm_damage_helper functions
> */
>
> -#define pr_fmt(fmt) "drm_damage_helper: " fmt
> -
> +#include <kunit/test.h>
> #include <drm/drm_damage_helper.h>
> #include <drm/drm_plane.h>
> #include <drm/drm_drv.h>
>
> -#include "test-drm_modeset_common.h"
> -
> struct drm_driver mock_driver;
> static struct drm_device mock_device;
> static struct drm_object_properties mock_obj_props;
> @@ -114,7 +111,7 @@ const struct drm_framebuffer fb = {
> mock_setup(&old_state); \
> mock_setup(&state);
>
> -int igt_damage_iter_no_damage(void *ignored)
> +static void igt_damage_iter_no_damage(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_rect clip;
> @@ -129,13 +126,12 @@ int igt_damage_iter_no_damage(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 1, "Should return plane src as damage.");
> - FAIL_ON(!check_damage_clip(&state, &clip, 0, 0, 2048, 2048));
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 1);
optional:
KUNIT_EXPECT_EQ_MSG(test, num_hits, 1, "Should return...")
can be used to make the error message more similar to the original.
The same applies to the other instances below
> + KUNIT_EXPECT_TRUE(test,
> + check_damage_clip(&state, &clip, 0, 0, 2048, 2048));
optional:
check_damage_clip(test, &state, &clip, 0, 0, 2048, 2048);
and then change check_damage_clip like so:
static void check_damage_clip(struct kunit *test, struct drm_plane_state *state,
struct drm_rect *r, int x1, int y1, int x2,
int y2)
{
/*
* Round down x1/y1 and round up x2/y2. This is because damage is not in
* 16.16 fixed point so to catch all pixels.
*/
int src_x1 = state->src.x1 >> 16;
int src_y1 = state->src.y1 >> 16;
int src_x2 = (state->src.x2 >> 16) + !!(state->src.x2 & 0xFFFF);
int src_y2 = (state->src.y2 >> 16) + !!(state->src.y2 & 0xFFFF);
if (x1 >= x2 || y1 >= y2) {
KUNIT_FAIL(test, "Cannot have damage clip with no dimension.");
} else if (x1 < src_x1 || y1 < src_y1 || x2 > src_x2 || y2 > src_y2) {
KUNIT_FAIL(test, "Damage cannot be outside rounded plane src.");
} else if (r->x1 != x1 || r->y1 != y1 || r->x2 != x2 || r->y2 != y2) {
KUNIT_FAIL(test, "Damage = %d %d %d %d", r->x1, r->y1, r->x2,
r->y2);
}
I'd actually recommend enhancing the original error messages a bit, e.g.:
KUNIT_FAIL(test, "Damage = %d %d %d %d, want = %d %d %d %d",
r->x1, r->y1, r->x2, r->y2,
x1, y1, x2, y2)
Then if I deliberately mess up one of the calls to this func, I get:
[18:08:02] # igt_damage_iter_no_damage_src_moved: EXPECTATION
FAILED at drivers/gpu/drm/selftests/test-drm_damage_helper.c:87
[18:08:02] Damage = 10 10 1034 778, want = 11 10 1034 778
[18:08:02] not ok 3 - igt_damage_iter_no_damage_src_moved
}
}
> }
>
> -int igt_damage_iter_no_damage_fractional_src(void *ignored)
> +static void igt_damage_iter_no_damage_fractional_src(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_rect clip;
> @@ -152,13 +148,12 @@ int igt_damage_iter_no_damage_fractional_src(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 1, "Should return rounded off plane src as damage.");
> - FAIL_ON(!check_damage_clip(&state, &clip, 3, 3, 1028, 772));
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 1);
> + KUNIT_EXPECT_TRUE(test,
> + check_damage_clip(&state, &clip, 3, 3, 1028, 772));
> }
>
> -int igt_damage_iter_no_damage_src_moved(void *ignored)
> +static void igt_damage_iter_no_damage_src_moved(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_rect clip;
> @@ -174,13 +169,12 @@ int igt_damage_iter_no_damage_src_moved(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 1, "Should return plane src as damage.");
> - FAIL_ON(!check_damage_clip(&state, &clip, 10, 10, 1034, 778));
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 1);
> + KUNIT_EXPECT_TRUE(test,
> + check_damage_clip(&state, &clip, 10, 10, 1034, 778));
> }
>
> -int igt_damage_iter_no_damage_fractional_src_moved(void *ignored)
> +static void igt_damage_iter_no_damage_fractional_src_moved(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_rect clip;
> @@ -197,13 +191,11 @@ int igt_damage_iter_no_damage_fractional_src_moved(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 1, "Should return plane src as damage.");
> - FAIL_ON(!check_damage_clip(&state, &clip, 4, 4, 1029, 773));
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 1);
> + KUNIT_EXPECT_TRUE(test, check_damage_clip(&state, &clip, 4, 4, 1029, 773));
> }
>
> -int igt_damage_iter_no_damage_not_visible(void *ignored)
> +static void igt_damage_iter_no_damage_not_visible(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_rect clip;
> @@ -221,12 +213,10 @@ int igt_damage_iter_no_damage_not_visible(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 0, "Should have no damage.");
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 0);
> }
>
> -int igt_damage_iter_no_damage_no_crtc(void *ignored)
> +static void igt_damage_iter_no_damage_no_crtc(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_rect clip;
> @@ -242,12 +232,10 @@ int igt_damage_iter_no_damage_no_crtc(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 0, "Should have no damage.");
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 0);
> }
>
> -int igt_damage_iter_no_damage_no_fb(void *ignored)
> +static void igt_damage_iter_no_damage_no_fb(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_plane_state old_state;
> @@ -267,12 +255,10 @@ int igt_damage_iter_no_damage_no_fb(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 0, "Should have no damage.");
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 0);
> }
>
> -int igt_damage_iter_simple_damage(void *ignored)
> +static void igt_damage_iter_simple_damage(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_property_blob damage_blob;
> @@ -292,13 +278,11 @@ int igt_damage_iter_simple_damage(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 1, "Should return damage when set.");
> - FAIL_ON(!check_damage_clip(&state, &clip, 0, 0, 1024, 768));
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 1);
> + KUNIT_EXPECT_TRUE(test, check_damage_clip(&state, &clip, 0, 0, 1024, 768));
> }
>
> -int igt_damage_iter_single_damage(void *ignored)
> +static void igt_damage_iter_single_damage(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_property_blob damage_blob;
> @@ -317,13 +301,12 @@ int igt_damage_iter_single_damage(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 1, "Should return damage when set.");
> - FAIL_ON(!check_damage_clip(&state, &clip, 256, 192, 768, 576));
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 1);
> + KUNIT_EXPECT_TRUE(test,
> + check_damage_clip(&state, &clip, 256, 192, 768, 576));
> }
>
> -int igt_damage_iter_single_damage_intersect_src(void *ignored)
> +static void igt_damage_iter_single_damage_intersect_src(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_property_blob damage_blob;
> @@ -343,13 +326,12 @@ int igt_damage_iter_single_damage_intersect_src(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 1, "Should return damage clipped to src.");
> - FAIL_ON(!check_damage_clip(&state, &clip, 256, 192, 1024, 768));
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 1);
> + KUNIT_EXPECT_TRUE(test,
> + check_damage_clip(&state, &clip, 256, 192, 1024, 768));
> }
>
> -int igt_damage_iter_single_damage_outside_src(void *ignored)
> +static void igt_damage_iter_single_damage_outside_src(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_property_blob damage_blob;
> @@ -369,12 +351,10 @@ int igt_damage_iter_single_damage_outside_src(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 0, "Should have no damage.");
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 0);
> }
>
> -int igt_damage_iter_single_damage_fractional_src(void *ignored)
> +static void igt_damage_iter_single_damage_fractional_src(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_property_blob damage_blob;
> @@ -396,13 +376,13 @@ int igt_damage_iter_single_damage_fractional_src(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 1, "Should return damage when set.");
> - FAIL_ON(!check_damage_clip(&state, &clip, 10, 10, 256, 330));
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 1);
> + KUNIT_EXPECT_TRUE(test,
> + check_damage_clip(&state, &clip, 10, 10, 256, 330));
> }
>
> -int igt_damage_iter_single_damage_intersect_fractional_src(void *ignored)
> +static void igt_damage_iter_single_damage_intersect_fractional_src(
> + struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_property_blob damage_blob;
> @@ -425,13 +405,13 @@ int igt_damage_iter_single_damage_intersect_fractional_src(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 1, "Should return damage clipped to rounded off src.");
> - FAIL_ON(!check_damage_clip(&state, &clip, 10, 4, 1029, 330));
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 1);
> + KUNIT_EXPECT_TRUE(test,
> + check_damage_clip(&state, &clip, 10, 4, 1029, 330));
> }
>
> -int igt_damage_iter_single_damage_outside_fractional_src(void *ignored)
> +static void igt_damage_iter_single_damage_outside_fractional_src(
> + struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_property_blob damage_blob;
> @@ -454,12 +434,10 @@ int igt_damage_iter_single_damage_outside_fractional_src(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 0, "Should have no damage.");
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 0);
> }
>
> -int igt_damage_iter_single_damage_src_moved(void *ignored)
> +static void igt_damage_iter_single_damage_src_moved(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_property_blob damage_blob;
> @@ -480,13 +458,13 @@ int igt_damage_iter_single_damage_src_moved(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 1, "Should return plane src as damage.");
> - FAIL_ON(!check_damage_clip(&state, &clip, 10, 10, 1034, 778));
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 1);
> + KUNIT_EXPECT_TRUE(test,
> + check_damage_clip(&state, &clip, 10, 10, 1034, 778));
> }
>
> -int igt_damage_iter_single_damage_fractional_src_moved(void *ignored)
> +static void igt_damage_iter_single_damage_fractional_src_moved(
> + struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_property_blob damage_blob;
> @@ -509,13 +487,11 @@ int igt_damage_iter_single_damage_fractional_src_moved(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 1, "Should return rounded off plane src as damage.");
> - FAIL_ON(!check_damage_clip(&state, &clip, 4, 4, 1029, 773));
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 1);
> + KUNIT_EXPECT_TRUE(test, check_damage_clip(&state, &clip, 4, 4, 1029, 773));
> }
>
> -int igt_damage_iter_damage(void *ignored)
> +static void igt_damage_iter_damage(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_property_blob damage_blob;
> @@ -535,18 +511,18 @@ int igt_damage_iter_damage(void *ignored)
> drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
> drm_atomic_for_each_plane_damage(&iter, &clip) {
> if (num_hits == 0)
> - FAIL_ON(!check_damage_clip(&state, &clip, 20, 30, 200, 180));
> + KUNIT_EXPECT_TRUE(test,
> + check_damage_clip(&state, &clip, 20, 30, 200, 180));
> if (num_hits == 1)
> - FAIL_ON(!check_damage_clip(&state, &clip, 240, 200, 280, 250));
> + KUNIT_EXPECT_TRUE(test,
> + check_damage_clip(&state, &clip, 240, 200, 280, 250));
> num_hits++;
> }
>
> - FAIL(num_hits != 2, "Should return damage when set.");
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 2);
> }
>
> -int igt_damage_iter_damage_one_intersect(void *ignored)
> +static void igt_damage_iter_damage_one_intersect(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_property_blob damage_blob;
> @@ -568,18 +544,18 @@ int igt_damage_iter_damage_one_intersect(void *ignored)
> drm_atomic_helper_damage_iter_init(&iter, &old_state, &state);
> drm_atomic_for_each_plane_damage(&iter, &clip) {
> if (num_hits == 0)
> - FAIL_ON(!check_damage_clip(&state, &clip, 20, 30, 200, 180));
> + KUNIT_EXPECT_TRUE(test,
> + check_damage_clip(&state, &clip, 20, 30, 200, 180));
> if (num_hits == 1)
> - FAIL_ON(!check_damage_clip(&state, &clip, 4, 4, 1029, 773));
> + KUNIT_EXPECT_TRUE(test,
> + check_damage_clip(&state, &clip, 4, 4, 1029, 773));
> num_hits++;
> }
>
> - FAIL(num_hits != 2, "Should return damage when set.");
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 2);
> }
>
> -int igt_damage_iter_damage_one_outside(void *ignored)
> +static void igt_damage_iter_damage_one_outside(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_property_blob damage_blob;
> @@ -600,13 +576,12 @@ int igt_damage_iter_damage_one_outside(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 1, "Should return damage when set.");
> - FAIL_ON(!check_damage_clip(&state, &clip, 240, 200, 280, 250));
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 1);
> + KUNIT_EXPECT_TRUE(test,
> + check_damage_clip(&state, &clip, 240, 200, 280, 250));
> }
>
> -int igt_damage_iter_damage_src_moved(void *ignored)
> +static void igt_damage_iter_damage_src_moved(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_property_blob damage_blob;
> @@ -629,13 +604,11 @@ int igt_damage_iter_damage_src_moved(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 1, "Should return round off plane src as damage.");
> - FAIL_ON(!check_damage_clip(&state, &clip, 3, 3, 1028, 772));
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 1);
> + KUNIT_EXPECT_TRUE(test, check_damage_clip(&state, &clip, 3, 3, 1028, 772));
> }
>
> -int igt_damage_iter_damage_not_visible(void *ignored)
> +static void igt_damage_iter_damage_not_visible(struct kunit *test)
> {
> struct drm_atomic_helper_damage_iter iter;
> struct drm_property_blob damage_blob;
> @@ -660,7 +633,39 @@ int igt_damage_iter_damage_not_visible(void *ignored)
> drm_atomic_for_each_plane_damage(&iter, &clip)
> num_hits++;
>
> - FAIL(num_hits != 0, "Should not return any damage.");
> -
> - return 0;
> + KUNIT_EXPECT_EQ(test, num_hits, 0);
> }
> +
> +static struct kunit_case drm_damage_helper_tests[] = {
> + KUNIT_CASE(igt_damage_iter_no_damage),
> + KUNIT_CASE(igt_damage_iter_no_damage_fractional_src),
> + KUNIT_CASE(igt_damage_iter_no_damage_src_moved),
> + KUNIT_CASE(igt_damage_iter_no_damage_fractional_src_moved),
> + KUNIT_CASE(igt_damage_iter_no_damage_not_visible),
> + KUNIT_CASE(igt_damage_iter_no_damage_no_crtc),
> + KUNIT_CASE(igt_damage_iter_no_damage_no_fb),
> + KUNIT_CASE(igt_damage_iter_simple_damage),
> + KUNIT_CASE(igt_damage_iter_single_damage),
> + KUNIT_CASE(igt_damage_iter_single_damage_intersect_src),
> + KUNIT_CASE(igt_damage_iter_single_damage_outside_src),
> + KUNIT_CASE(igt_damage_iter_single_damage_fractional_src),
> + KUNIT_CASE(igt_damage_iter_single_damage_intersect_fractional_src),
> + KUNIT_CASE(igt_damage_iter_single_damage_outside_fractional_src),
> + KUNIT_CASE(igt_damage_iter_single_damage_src_moved),
> + KUNIT_CASE(igt_damage_iter_single_damage_fractional_src_moved),
> + KUNIT_CASE(igt_damage_iter_damage),
> + KUNIT_CASE(igt_damage_iter_damage_one_intersect),
> + KUNIT_CASE(igt_damage_iter_damage_one_outside),
> + KUNIT_CASE(igt_damage_iter_damage_src_moved),
> + KUNIT_CASE(igt_damage_iter_damage_not_visible),
> + { }
> +};
> +
> +static struct kunit_suite drm_damage_helper_test_suite = {
> + .name = "drm_damage_helper_tests",
> + .test_cases = drm_damage_helper_tests,
> +};
> +
> +kunit_test_suite(drm_damage_helper_test_suite);
> +
> +MODULE_LICENSE("GPL");
> --
> 2.33.1
>
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