[PATCH 02/13] drm: add drm_exec selftests v2

[Christian König]

Largely just the initial skeleton.

v2: add array test as well

Signed-off-by: Christian König <christian.koenig at amd.com>
---
 drivers/gpu/drm/Kconfig               |  1 +
 drivers/gpu/drm/tests/Makefile        |  3 +-
 drivers/gpu/drm/tests/drm_exec_test.c | 96 +++++++++++++++++++++++++++
 3 files changed, 99 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 2dc81eb062eb..068e574e234e 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 bca726a8f483..ba7baa622675 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 000000000000..26aa13e62d22
--- /dev/null
+++ b/drivers/gpu/drm/tests/drm_exec_test.c
@@ -0,0 +1,96 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#define pr_fmt(fmt) "drm_exec: " fmt
+
+#include <kunit/test.h>
+
+#include <linux/module.h>
+#include <linux/prime_numbers.h>
+
+#include <drm/drm_exec.h>
+#include <drm/drm_device.h>
+#include <drm/drm_gem.h>
+
+#include "../lib/drm_random.h"
+
+static struct drm_device dev;
+
+static void drm_exec_sanitycheck(struct kunit *test)
+{
+	struct drm_exec exec;
+
+	drm_exec_init(&exec, true);
+	drm_exec_fini(&exec);
+	pr_info("%s - ok!\n", __func__);
+}
+
+static void drm_exec_lock1(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, true);
+	drm_exec_while_not_all_locked(&exec) {
+		ret = drm_exec_prepare_obj(&exec, &gobj, 1);
+		drm_exec_continue_on_contention(&exec);
+		if (ret) {
+			drm_exec_fini(&exec);
+			pr_err("%s - err %d!\n", __func__, ret);
+			return;
+		}
+	}
+	drm_exec_fini(&exec);
+	pr_info("%s - ok!\n", __func__);
+}
+
+static void drm_exec_lock_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, true);
+	ret = drm_exec_prepare_array(&exec, array, ARRAY_SIZE(array), 0);
+	if (ret) {
+		drm_exec_fini(&exec);
+		pr_err("%s - err %d!\n", __func__, ret);
+		return;
+	}
+	drm_exec_fini(&exec);
+	pr_info("%s - ok!\n", __func__);
+}
+
+static int drm_exec_suite_init(struct kunit_suite *suite)
+{
+	kunit_info(suite, "Testing DRM exec manager\n");
+	return 0;
+}
+
+static struct kunit_case drm_exec_tests[] = {
+	KUNIT_CASE(drm_exec_sanitycheck),
+	KUNIT_CASE(drm_exec_lock1),
+	KUNIT_CASE(drm_exec_lock_array),
+	{}
+};
+
+static struct kunit_suite drm_exec_test_suite = {
+	.name = "drm_exec",
+	.suite_init = drm_exec_suite_init,
+	.test_cases = drm_exec_tests,
+};
+
+kunit_test_suite(drm_exec_test_suite);
+
+MODULE_AUTHOR("AMD");
+MODULE_LICENSE("GPL and additional rights");
-- 
2.34.1