From 9710631cc8f367da04879760b892a8fc7aac9f45 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Christian=20K=C3=B6nig?= Date: Wed, 13 Apr 2022 16:09:00 +0200 Subject: [PATCH] drm: add drm_exec selftests v4 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Exercise at least all driver facing functions of this new component. v2: add array test as well v3: some kunit cleanups v4: more tests and cleanups Signed-off-by: Christian König Acked-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20230711133122.3710-3-christian.koenig@amd.com --- drivers/gpu/drm/Kconfig | 1 + drivers/gpu/drm/tests/Makefile | 3 +- drivers/gpu/drm/tests/drm_exec_test.c | 159 ++++++++++++++++++++++++++++++++++ 3 files changed, 162 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/tests/drm_exec_test.c diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index c0b4063..22c1ba9e 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -80,6 +80,7 @@ config DRM_KUNIT_TEST select DRM_BUDDY select DRM_EXPORT_FOR_TESTS if m select DRM_KUNIT_TEST_HELPERS + select DRM_EXEC default KUNIT_ALL_TESTS help This builds unit tests for DRM. This option is not useful for diff --git a/drivers/gpu/drm/tests/Makefile b/drivers/gpu/drm/tests/Makefile index bca726a..ba7baa6 100644 --- a/drivers/gpu/drm/tests/Makefile +++ b/drivers/gpu/drm/tests/Makefile @@ -17,6 +17,7 @@ obj-$(CONFIG_DRM_KUNIT_TEST) += \ drm_modes_test.o \ drm_plane_helper_test.o \ drm_probe_helper_test.o \ - drm_rect_test.o + drm_rect_test.o \ + drm_exec_test.o CFLAGS_drm_mm_test.o := $(DISABLE_STRUCTLEAK_PLUGIN) diff --git a/drivers/gpu/drm/tests/drm_exec_test.c b/drivers/gpu/drm/tests/drm_exec_test.c new file mode 100644 index 0000000..727ac26 --- /dev/null +++ b/drivers/gpu/drm/tests/drm_exec_test.c @@ -0,0 +1,159 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright 2022 Advanced Micro Devices, Inc. + */ + +#define pr_fmt(fmt) "drm_exec: " fmt + +#include + +#include +#include + +#include +#include +#include + +#include "../lib/drm_random.h" + +static struct drm_device dev; + +static void sanitycheck(struct kunit *test) +{ + struct drm_exec exec; + + drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT); + drm_exec_fini(&exec); + KUNIT_SUCCEED(test); +} + +static void test_lock(struct kunit *test) +{ + struct drm_gem_object gobj = { }; + struct drm_exec exec; + int ret; + + drm_gem_private_object_init(&dev, &gobj, PAGE_SIZE); + + drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT); + drm_exec_until_all_locked(&exec) { + ret = drm_exec_lock_obj(&exec, &gobj); + drm_exec_retry_on_contention(&exec); + KUNIT_EXPECT_EQ(test, ret, 0); + if (ret) + break; + } + drm_exec_fini(&exec); +} + +static void test_lock_unlock(struct kunit *test) +{ + struct drm_gem_object gobj = { }; + struct drm_exec exec; + int ret; + + drm_gem_private_object_init(&dev, &gobj, PAGE_SIZE); + + drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT); + drm_exec_until_all_locked(&exec) { + ret = drm_exec_lock_obj(&exec, &gobj); + drm_exec_retry_on_contention(&exec); + KUNIT_EXPECT_EQ(test, ret, 0); + if (ret) + break; + + drm_exec_unlock_obj(&exec, &gobj); + ret = drm_exec_lock_obj(&exec, &gobj); + drm_exec_retry_on_contention(&exec); + KUNIT_EXPECT_EQ(test, ret, 0); + if (ret) + break; + } + drm_exec_fini(&exec); +} + +static void test_duplicates(struct kunit *test) +{ + struct drm_gem_object gobj = { }; + struct drm_exec exec; + int ret; + + drm_gem_private_object_init(&dev, &gobj, PAGE_SIZE); + + drm_exec_init(&exec, DRM_EXEC_IGNORE_DUPLICATES); + drm_exec_until_all_locked(&exec) { + ret = drm_exec_lock_obj(&exec, &gobj); + drm_exec_retry_on_contention(&exec); + KUNIT_EXPECT_EQ(test, ret, 0); + if (ret) + break; + + ret = drm_exec_lock_obj(&exec, &gobj); + drm_exec_retry_on_contention(&exec); + KUNIT_EXPECT_EQ(test, ret, 0); + if (ret) + break; + } + drm_exec_unlock_obj(&exec, &gobj); + drm_exec_fini(&exec); +} + + + +static void test_prepare(struct kunit *test) +{ + struct drm_gem_object gobj = { }; + struct drm_exec exec; + int ret; + + drm_gem_private_object_init(&dev, &gobj, PAGE_SIZE); + + drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT); + drm_exec_until_all_locked(&exec) { + ret = drm_exec_prepare_obj(&exec, &gobj, 1); + drm_exec_retry_on_contention(&exec); + KUNIT_EXPECT_EQ(test, ret, 0); + if (ret) + break; + } + drm_exec_fini(&exec); +} + +static void test_prepare_array(struct kunit *test) +{ + struct drm_gem_object gobj1 = { }; + struct drm_gem_object gobj2 = { }; + struct drm_gem_object *array[] = { &gobj1, &gobj2 }; + struct drm_exec exec; + int ret; + + drm_gem_private_object_init(&dev, &gobj1, PAGE_SIZE); + drm_gem_private_object_init(&dev, &gobj2, PAGE_SIZE); + + drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT); + drm_exec_until_all_locked(&exec) + ret = drm_exec_prepare_array(&exec, array, ARRAY_SIZE(array), + 1); + KUNIT_EXPECT_EQ(test, ret, 0); + drm_exec_fini(&exec); +} + +static struct kunit_case drm_exec_tests[] = { + KUNIT_CASE(sanitycheck), + KUNIT_CASE(test_lock), + KUNIT_CASE(test_lock_unlock), + KUNIT_CASE(test_duplicates), + KUNIT_CASE(test_prepare), + KUNIT_CASE(test_prepare_array), + {} +}; + +static struct kunit_suite drm_exec_test_suite = { + .name = "drm_exec", + .test_cases = drm_exec_tests, +}; + +kunit_test_suite(drm_exec_test_suite); + +MODULE_AUTHOR("AMD"); +MODULE_LICENSE("GPL and additional rights"); -- 2.7.4