---
drivers/gpu/drm/ttm/tests/Makefile | 1 +
drivers/gpu/drm/ttm/tests/ttm_bo_test.c | 619 ++++++++++++++++++
drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c | 6 +
3 files changed, 626 insertions(+)
create mode 100644 drivers/gpu/drm/ttm/tests/ttm_bo_test.c
diff --git a/drivers/gpu/drm/ttm/tests/Makefile
b/drivers/gpu/drm/ttm/tests/Makefile
index f570530bbb60..468535f7eed2 100644
--- a/drivers/gpu/drm/ttm/tests/Makefile
+++ b/drivers/gpu/drm/ttm/tests/Makefile
@@ -5,4 +5,5 @@ obj-$(CONFIG_DRM_TTM_KUNIT_TEST) += \
ttm_pool_test.o \
ttm_resource_test.o \
ttm_tt_test.o \
+ ttm_bo_test.o \
ttm_kunit_helpers.o
diff --git a/drivers/gpu/drm/ttm/tests/ttm_bo_test.c
b/drivers/gpu/drm/ttm/tests/ttm_bo_test.c
new file mode 100644
index 000000000000..71bca47205ed
--- /dev/null
+++ b/drivers/gpu/drm/ttm/tests/ttm_bo_test.c
@@ -0,0 +1,619 @@
+// SPDX-License-Identifier: GPL-2.0 AND MIT
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+#include <linux/dma-resv.h>
+#include <linux/kthread.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/jiffies.h>
+#include <linux/mutex.h>
+#include <linux/ww_mutex.h>
+
+#include <drm/ttm/ttm_resource.h>
+#include <drm/ttm/ttm_placement.h>
+#include <drm/ttm/ttm_tt.h>
+
+#include "ttm_kunit_helpers.h"
+
+#define BO_SIZE SZ_8K
+
+struct ttm_bo_test_case {
+ const char *description;
+ bool interruptible;
+ bool no_wait;
+};
+
+static const struct ttm_bo_test_case ttm_bo_reserved_cases[] = {
+ {
+ .description = "Cannot be interrupted and sleeps",
+ .interruptible = false,
+ .no_wait = false,
+ },
+ {
+ .description = "Cannot be interrupted, locks straight away",
+ .interruptible = false,
+ .no_wait = true,
+ },
+ {
+ .description = "Can be interrupted, sleeps",
+ .interruptible = true,
+ .no_wait = false,
+ },
+};
+
+static void ttm_bo_init_case_desc(const struct ttm_bo_test_case *t,
+ char *desc)
+{
+ strscpy(desc, t->description, KUNIT_PARAM_DESC_SIZE);
+}
+
+KUNIT_ARRAY_PARAM(ttm_bo_reserve, ttm_bo_reserved_cases,
ttm_bo_init_case_desc);
+
+static void ttm_bo_reserve_optimistic_no_ticket(struct kunit *test)
+{
+ const struct ttm_bo_test_case *params = test->param_value;
+ struct ttm_buffer_object *bo;
+ int err;
+
+ bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+
+ err = ttm_bo_reserve(bo, params->interruptible, params->no_wait,
NULL);
+ KUNIT_ASSERT_EQ(test, err, 0);
+
+ dma_resv_unlock(bo->base.resv);
+}
+
+static void ttm_bo_reserve_locked_no_sleep(struct kunit *test)
+{
+ struct ttm_buffer_object *bo;
+ bool interruptible = false;
+ bool no_wait = true;
+ int err;
+
+ bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+
+ /* Let's lock it beforehand */
+ dma_resv_lock(bo->base.resv, NULL);
+
+ err = ttm_bo_reserve(bo, interruptible, no_wait, NULL);
+ dma_resv_unlock(bo->base.resv);
+
+ KUNIT_ASSERT_EQ(test, err, -EBUSY);
+}
+
+static void ttm_bo_reserve_no_wait_ticket(struct kunit *test)
+{
+ struct ttm_buffer_object *bo;
+ struct ww_acquire_ctx ctx;
+ bool interruptible = false;
+ bool no_wait = true;
+ int err;
+
+ ww_acquire_init(&ctx, &reservation_ww_class);
+
+ bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+
+ err = ttm_bo_reserve(bo, interruptible, no_wait, &ctx);
+ KUNIT_ASSERT_EQ(test, err, -EBUSY);
+
+ ww_acquire_fini(&ctx);
+}
+
+static void ttm_bo_reserve_double_resv(struct kunit *test)
+{
+ struct ttm_buffer_object *bo;
+ struct ww_acquire_ctx ctx;
+ bool interruptible = false;
+ bool no_wait = false;
+ int err;
+
+ ww_acquire_init(&ctx, &reservation_ww_class);
+
+ bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+
+ err = ttm_bo_reserve(bo, interruptible, no_wait, &ctx);
+ KUNIT_ASSERT_EQ(test, err, 0);
+
+ err = ttm_bo_reserve(bo, interruptible, no_wait, &ctx);
+
+ dma_resv_unlock(bo->base.resv);
+ ww_acquire_fini(&ctx);
+
+ KUNIT_ASSERT_EQ(test, err, -EALREADY);
+}
+
+/*
+ * A test case heavily inspired by ww_test_edeadlk_normal(). Checks
+ * if -EDEADLK is properly propagated by ttm_bo_reserve()
+ */
+static void ttm_bo_reserve_deadlock(struct kunit *test)
+{
+ struct ttm_buffer_object *bo1, *bo2;
+ struct ww_acquire_ctx ctx1, ctx2;
+ bool interruptible = false;
+ bool no_wait = false;
+ int err;
+
+ bo1 = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+ bo2 = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+
+ ww_acquire_init(&ctx1, &reservation_ww_class);
+ mutex_lock(&bo2->base.resv->lock.base);
+
+ /* The deadlock will be caught by WW mutex, don't warn about it */
+ lock_release(&bo2->base.resv->lock.base.dep_map, 1);
+
+ bo2->base.resv->lock.ctx = &ctx2;
+ ctx2 = ctx1;
+ ctx2.stamp--; /* Make the context holding the lock younger */
+
+ err = ttm_bo_reserve(bo1, interruptible, no_wait, &ctx1);
+ KUNIT_ASSERT_EQ(test, err, 0);
+
+ err = ttm_bo_reserve(bo2, interruptible, no_wait, &ctx1);
+ KUNIT_ASSERT_EQ(test, err, -EDEADLK);
+
+ dma_resv_unlock(bo1->base.resv);
+ ww_acquire_fini(&ctx1);
+}
+
+#if IS_BUILTIN(CONFIG_DRM_TTM_KUNIT_TEST)
+struct signal_timer {
+ struct timer_list timer;
+ struct ww_acquire_ctx *ctx;
+};
+
+static void signal_for_ttm_bo_reserve(struct timer_list *t)
+{
+ struct signal_timer *s_timer = from_timer(s_timer, t, timer);
+ struct task_struct *task = s_timer->ctx->task;
+
+ do_send_sig_info(SIGTERM, SEND_SIG_PRIV, task, PIDTYPE_PID);
+}
+
+static int threaded_ttm_bo_reserve(void *arg)
+{
+ struct ttm_buffer_object *bo = arg;
+ struct signal_timer s_timer;
+ struct ww_acquire_ctx ctx;
+ bool interruptible = true;
+ bool no_wait = false;
+ int err;
+
+ ww_acquire_init(&ctx, &reservation_ww_class);
+
+ /* Prepare a signal that will interrupt the reservation attempt */
+ timer_setup_on_stack(&s_timer.timer, &signal_for_ttm_bo_reserve, 0);
+ s_timer.ctx = &ctx;
+
+ mod_timer(&s_timer.timer, msecs_to_jiffies(100));
+
+ err = ttm_bo_reserve(bo, interruptible, no_wait, &ctx);
+
+ timer_delete_sync(&s_timer.timer);
+ destroy_timer_on_stack(&s_timer.timer);
+
+ ww_acquire_fini(&ctx);
+
+ return err;
+}
+
+static void ttm_bo_reserve_interrupted(struct kunit *test)
+{
+ struct ttm_buffer_object *bo;
+ struct task_struct *task;
+ int err;
+
+ bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+
+ task = kthread_create(threaded_ttm_bo_reserve, bo,
"ttm-bo-reserve");
+
+ if (IS_ERR(task))
+ KUNIT_FAIL(test, "Couldn't create ttm bo reserve task\n");
+
+ /* Take a lock so the threaded reserve has to wait */
+ mutex_lock(&bo->base.resv->lock.base);
+
+ wake_up_process(task);
+ msleep(20);
+ err = kthread_stop(task);
+
+ mutex_unlock(&bo->base.resv->lock.base);
+
+ KUNIT_ASSERT_EQ(test, err, -ERESTARTSYS);
+}
+#endif /* IS_BUILTIN(CONFIG_DRM_TTM_KUNIT_TEST) */
+
+static void ttm_bo_unreserve_basic(struct kunit *test)
+{
+ struct ttm_test_devices *priv = test->priv;
+ struct ttm_buffer_object *bo;
+ struct ttm_device *ttm_dev;
+ struct ttm_resource *res1, *res2;
+ struct ttm_place *place;
+ struct ttm_resource_manager *man;
+ unsigned int bo_prio = TTM_MAX_BO_PRIORITY - 1;
+ uint32_t mem_type = TTM_PL_SYSTEM;
+ int err;
+
+ place = ttm_place_kunit_init(test, mem_type, 0);
+
+ ttm_dev = kunit_kzalloc(test, sizeof(*ttm_dev), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_NULL(test, ttm_dev);
+
+ err = ttm_device_kunit_init(priv, ttm_dev, false, false);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ priv->ttm_dev = ttm_dev;
+
+ bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+ bo->priority = bo_prio;
+
+ err = ttm_resource_alloc(bo, place, &res1);
+ KUNIT_ASSERT_EQ(test, err, 0);
+
+ bo->resource = res1;
+
+ /* Add a dummy resource to populate LRU */
+ ttm_resource_alloc(bo, place, &res2);
+
+ dma_resv_lock(bo->base.resv, NULL);
+ ttm_bo_unreserve(bo);
+
+ man = ttm_manager_type(priv->ttm_dev, mem_type);
+ KUNIT_ASSERT_EQ(test,
+ list_is_last(&res1->lru, &man->lru[bo->priority]), 1);
+
+ ttm_resource_free(bo, &res2);
+ ttm_resource_free(bo, &res1);
+}
+
+static void ttm_bo_unreserve_pinned(struct kunit *test)
+{
+ struct ttm_test_devices *priv = test->priv;
+ struct ttm_buffer_object *bo;
+ struct ttm_device *ttm_dev;
+ struct ttm_resource *res1, *res2;
+ struct ttm_place *place;
+ uint32_t mem_type = TTM_PL_SYSTEM;
+ int err;
+
+ ttm_dev = kunit_kzalloc(test, sizeof(*ttm_dev), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_NULL(test, ttm_dev);
+
+ err = ttm_device_kunit_init(priv, ttm_dev, false, false);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ priv->ttm_dev = ttm_dev;
+
+ bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+ place = ttm_place_kunit_init(test, mem_type, 0);
+
+ dma_resv_lock(bo->base.resv, NULL);
+ ttm_bo_pin(bo);
+
+ err = ttm_resource_alloc(bo, place, &res1);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ bo->resource = res1;
+
+ /* Add a dummy resource to the pinned list */
+ err = ttm_resource_alloc(bo, place, &res2);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ KUNIT_ASSERT_EQ(test,
+ list_is_last(&res2->lru, &priv->ttm_dev->pinned), 1);
+
+ ttm_bo_unreserve(bo);
+ KUNIT_ASSERT_EQ(test,
+ list_is_last(&res1->lru, &priv->ttm_dev->pinned), 1);
+
+ ttm_resource_free(bo, &res1);
+ ttm_resource_free(bo, &res2);
+}
+
+static void ttm_bo_unreserve_bulk(struct kunit *test)
+{
+ struct ttm_test_devices *priv = test->priv;
+ struct ttm_lru_bulk_move lru_bulk_move;
+ struct ttm_lru_bulk_move_pos *pos;
+ struct ttm_buffer_object *bo1, *bo2;
+ struct ttm_resource *res1, *res2;
+ struct ttm_device *ttm_dev;
+ struct ttm_place *place;
+ uint32_t mem_type = TTM_PL_SYSTEM;
+ unsigned int bo_priority = 0;
+ int err;
+
+ ttm_lru_bulk_move_init(&lru_bulk_move);
+
+ place = ttm_place_kunit_init(test, mem_type, 0);
+
+ ttm_dev = kunit_kzalloc(test, sizeof(*ttm_dev), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_NULL(test, ttm_dev);
+
+ err = ttm_device_kunit_init(priv, ttm_dev, false, false);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ priv->ttm_dev = ttm_dev;
+
+ bo1 = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+ bo2 = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+
+ dma_resv_lock(bo1->base.resv, NULL);
+ ttm_bo_set_bulk_move(bo1, &lru_bulk_move);
+ dma_resv_unlock(bo1->base.resv);
+
+ err = ttm_resource_alloc(bo1, place, &res1);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ bo1->resource = res1;
+
+ dma_resv_lock(bo2->base.resv, NULL);
+ ttm_bo_set_bulk_move(bo2, &lru_bulk_move);
+ dma_resv_unlock(bo2->base.resv);
+
+ err = ttm_resource_alloc(bo2, place, &res2);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ bo2->resource = res2;
+
+ ttm_bo_reserve(bo1, false, false, NULL);
+ ttm_bo_unreserve(bo1);
+
+ pos = &lru_bulk_move.pos[mem_type][bo_priority];
+ KUNIT_ASSERT_PTR_EQ(test, res1, pos->last);
+
+ ttm_resource_free(bo1, &res1);
+ ttm_resource_free(bo2, &res2);
+}
+
+static void ttm_bo_put_basic(struct kunit *test)
+{
+ struct ttm_test_devices *priv = test->priv;
+ struct ttm_buffer_object *bo;
+ struct ttm_resource *res;
+ struct ttm_device *ttm_dev;
+ struct ttm_place *place;
+ uint32_t mem_type = TTM_PL_SYSTEM;
+ int err;
+
+ place = ttm_place_kunit_init(test, mem_type, 0);
+
+ ttm_dev = kunit_kzalloc(test, sizeof(*ttm_dev), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_NULL(test, ttm_dev);
+
+ err = ttm_device_kunit_init(priv, ttm_dev, false, false);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ priv->ttm_dev = ttm_dev;
+
+ bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+ bo->type = ttm_bo_type_device;
+
+ err = ttm_resource_alloc(bo, place, &res);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ bo->resource = res;
+
+ dma_resv_lock(bo->base.resv, NULL);
+ err = ttm_tt_create(bo, false);
+ dma_resv_unlock(bo->base.resv);
+ KUNIT_EXPECT_EQ(test, err, 0);
+
+ ttm_bo_put(bo);
+}
+
+static const char *mock_name(struct dma_fence *f)
+{
+ return "kunit-ttm-bo-put";
+}
+
+static const struct dma_fence_ops mock_fence_ops = {
+ .get_driver_name = mock_name,
+ .get_timeline_name = mock_name,
+};
+
+static void ttm_bo_put_shared_resv(struct kunit *test)
+{
+ struct ttm_test_devices *priv = test->priv;
+ struct ttm_buffer_object *bo;
+ struct dma_resv *external_resv;
+ struct dma_fence *fence;
+ /* A dummy DMA fence lock */
+ spinlock_t fence_lock;
+ struct ttm_device *ttm_dev;
+ int err;
+
+ ttm_dev = kunit_kzalloc(test, sizeof(*ttm_dev), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_NULL(test, ttm_dev);
+
+ err = ttm_device_kunit_init(priv, ttm_dev, false, false);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ priv->ttm_dev = ttm_dev;
+
+ external_resv = kunit_kzalloc(test, sizeof(*ttm_dev), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_NULL(test, external_resv);
+
+ dma_resv_init(external_resv);
+
+ fence = kunit_kzalloc(test, sizeof(*fence), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_NULL(test, fence);
+
+ spin_lock_init(&fence_lock);
+ dma_fence_init(fence, &mock_fence_ops, &fence_lock, 0, 0);
+
+ dma_resv_lock(external_resv, NULL);
+ dma_resv_reserve_fences(external_resv, 1);
+ dma_resv_add_fence(external_resv, fence, DMA_RESV_USAGE_BOOKKEEP);
+ dma_resv_unlock(external_resv);
+
+ dma_fence_signal(fence);
+
+ bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+ bo->type = ttm_bo_type_device;
+ bo->base.resv = external_resv;
+
+ ttm_bo_put(bo);
+}
+
+static void ttm_bo_pin_basic(struct kunit *test)
+{
+ struct ttm_test_devices *priv = test->priv;
+ struct ttm_buffer_object *bo;
+ struct ttm_device *ttm_dev;
+ unsigned int no_pins = 3;
+ int err;
+
+ ttm_dev = kunit_kzalloc(test, sizeof(*ttm_dev), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_NULL(test, ttm_dev);
+
+ err = ttm_device_kunit_init(priv, ttm_dev, false, false);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ priv->ttm_dev = ttm_dev;
+
+ bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+
+ for (int i = 0; i < no_pins; i++) {
+ dma_resv_lock(bo->base.resv, NULL);
+ ttm_bo_pin(bo);
+ dma_resv_unlock(bo->base.resv);
+ }
+
+ KUNIT_ASSERT_EQ(test, bo->pin_count, no_pins);
+}
+
+static void ttm_bo_pin_unpin_resource(struct kunit *test)
+{
+ struct ttm_test_devices *priv = test->priv;
+ struct ttm_lru_bulk_move lru_bulk_move;
+ struct ttm_lru_bulk_move_pos *pos;
+ struct ttm_buffer_object *bo;
+ struct ttm_resource *res;
+ struct ttm_device *ttm_dev;
+ struct ttm_place *place;
+ uint32_t mem_type = TTM_PL_SYSTEM;
+ unsigned int bo_priority = 0;
+ int err;
+
+ ttm_lru_bulk_move_init(&lru_bulk_move);
+
+ place = ttm_place_kunit_init(test, mem_type, 0);
+
+ ttm_dev = kunit_kzalloc(test, sizeof(*ttm_dev), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_NULL(test, ttm_dev);
+
+ err = ttm_device_kunit_init(priv, ttm_dev, false, false);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ priv->ttm_dev = ttm_dev;
+
+ bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+
+ err = ttm_resource_alloc(bo, place, &res);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ bo->resource = res;
+
+ dma_resv_lock(bo->base.resv, NULL);
+ ttm_bo_set_bulk_move(bo, &lru_bulk_move);
+ ttm_bo_pin(bo);
+ dma_resv_unlock(bo->base.resv);
+
+ pos = &lru_bulk_move.pos[mem_type][bo_priority];
+
+ KUNIT_ASSERT_EQ(test, bo->pin_count, 1);
+ KUNIT_ASSERT_NULL(test, pos->first);
+ KUNIT_ASSERT_NULL(test, pos->last);
+
+ dma_resv_lock(bo->base.resv, NULL);
+ ttm_bo_unpin(bo);
+ dma_resv_unlock(bo->base.resv);
+
+ KUNIT_ASSERT_PTR_EQ(test, res, pos->last);
+ KUNIT_ASSERT_EQ(test, bo->pin_count, 0);
+
+ ttm_resource_free(bo, &res);
+}
+
+static void ttm_bo_multiple_pin_one_unpin(struct kunit *test)
+{
+ struct ttm_test_devices *priv = test->priv;
+ struct ttm_lru_bulk_move lru_bulk_move;
+ struct ttm_lru_bulk_move_pos *pos;
+ struct ttm_buffer_object *bo;
+ struct ttm_resource *res;
+ struct ttm_device *ttm_dev;
+ struct ttm_place *place;
+ uint32_t mem_type = TTM_PL_SYSTEM;
+ unsigned int bo_priority = 0;
+ int err;
+
+ ttm_lru_bulk_move_init(&lru_bulk_move);
+
+ place = ttm_place_kunit_init(test, mem_type, 0);
+
+ ttm_dev = kunit_kzalloc(test, sizeof(*ttm_dev), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_NULL(test, ttm_dev);
+
+ err = ttm_device_kunit_init(priv, ttm_dev, false, false);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ priv->ttm_dev = ttm_dev;
+
+ bo = ttm_bo_kunit_init(test, test->priv, BO_SIZE);
+
+ err = ttm_resource_alloc(bo, place, &res);
+ KUNIT_ASSERT_EQ(test, err, 0);
+ bo->resource = res;
+
+ dma_resv_lock(bo->base.resv, NULL);
+ ttm_bo_set_bulk_move(bo, &lru_bulk_move);
+
+ /* Multiple pins */
+ ttm_bo_pin(bo);
+ ttm_bo_pin(bo);
+
+ dma_resv_unlock(bo->base.resv);
+
+ pos = &lru_bulk_move.pos[mem_type][bo_priority];
+
+ KUNIT_ASSERT_EQ(test, bo->pin_count, 2);
+ KUNIT_ASSERT_NULL(test, pos->first);
+ KUNIT_ASSERT_NULL(test, pos->last);
+
+ dma_resv_lock(bo->base.resv, NULL);
+ ttm_bo_unpin(bo);
+ dma_resv_unlock(bo->base.resv);
+
+ KUNIT_ASSERT_EQ(test, bo->pin_count, 1);
+ KUNIT_ASSERT_NULL(test, pos->first);
+ KUNIT_ASSERT_NULL(test, pos->last);
+
+ dma_resv_lock(bo->base.resv, NULL);
+ ttm_bo_unpin(bo);
+ dma_resv_unlock(bo->base.resv);
+
+ ttm_resource_free(bo, &res);
+}
+
+static struct kunit_case ttm_bo_test_cases[] = {
+ KUNIT_CASE_PARAM(ttm_bo_reserve_optimistic_no_ticket,
+ ttm_bo_reserve_gen_params),
+ KUNIT_CASE(ttm_bo_reserve_locked_no_sleep),
+ KUNIT_CASE(ttm_bo_reserve_no_wait_ticket),
+ KUNIT_CASE(ttm_bo_reserve_double_resv),
+#if IS_BUILTIN(CONFIG_DRM_TTM_KUNIT_TEST)
+ KUNIT_CASE(ttm_bo_reserve_interrupted),
+#endif
+ KUNIT_CASE(ttm_bo_reserve_deadlock),
+ KUNIT_CASE(ttm_bo_unreserve_basic),
+ KUNIT_CASE(ttm_bo_unreserve_pinned),
+ KUNIT_CASE(ttm_bo_unreserve_bulk),
+ KUNIT_CASE(ttm_bo_put_basic),
+ KUNIT_CASE(ttm_bo_put_shared_resv),
+ KUNIT_CASE(ttm_bo_pin_basic),
+ KUNIT_CASE(ttm_bo_pin_unpin_resource),
+ KUNIT_CASE(ttm_bo_multiple_pin_one_unpin),
+ {}
+};
+
+static struct kunit_suite ttm_bo_test_suite = {
+ .name = "ttm_bo",
+ .init = ttm_test_devices_init,
+ .exit = ttm_test_devices_fini,
+ .test_cases = ttm_bo_test_cases,
+};
+
+kunit_test_suites(&ttm_bo_test_suite);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
b/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
index ba4e5c689164..7b7c1fa805fc 100644
--- a/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
+++ b/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
@@ -22,6 +22,10 @@ static void ttm_tt_simple_destroy(struct ttm_device
*bdev, struct ttm_tt *ttm)
kfree(ttm);
}
+static void dummy_ttm_bo_destroy(struct ttm_buffer_object *bo)
+{
+}
+
struct ttm_device_funcs ttm_dev_funcs = {
.ttm_tt_create = ttm_tt_simple_create,
.ttm_tt_destroy = ttm_tt_simple_destroy,
@@ -61,6 +65,8 @@ struct ttm_buffer_object *ttm_bo_kunit_init(struct
kunit *test,
KUNIT_ASSERT_EQ(test, err, 0);
bo->bdev = devs->ttm_dev;
+ bo->destroy = dummy_ttm_bo_destroy;
+
kref_init(&bo->kref);
return bo;
