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drm/sched: Add a simple timeout test

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Add a very simple timeout test which submits a single job and verifies
that the timeout handling will run if the backend failed to complete the
job in time.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Philipp Stanner <phasta@kernel.org>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250324092633.49746-4-tvrtko.ursulin@igalia.com
This commit is contained in:
Tvrtko Ursulin
2025-03-24 09:26:30 +00:00
committed by Philipp Stanner
parent 5a99350794
commit 53e6597492
3 changed files with 73 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/gpu/drm/scheduler/tests/mock_scheduler.c
View File

@@ -203,7 +203,11 @@ static struct dma_fence *mock_sched_run_job(struct drm_sched_job *sched_job)
static enum drm_gpu_sched_stat
mock_sched_timedout_job(struct drm_sched_job *sched_job)
{
return DRM_GPU_SCHED_STAT_ENODEV;
struct drm_mock_sched_job *job = drm_sched_job_to_mock_job(sched_job);
job->flags |= DRM_MOCK_SCHED_JOB_TIMEDOUT;
return DRM_GPU_SCHED_STAT_NOMINAL;
}
static void mock_sched_free_job(struct drm_sched_job *sched_job)
@@ -234,17 +238,18 @@ static const struct drm_sched_backend_ops drm_mock_scheduler_ops = {
* drm_mock_sched_new - Create a new mock scheduler
*
* @test: KUnit test owning the job
* @timeout: Job timeout to set
*
* Returns: New mock scheduler with allocation managed by the test
*/
struct drm_mock_scheduler *drm_mock_sched_new(struct kunit *test)
struct drm_mock_scheduler *drm_mock_sched_new(struct kunit *test, long timeout)
{
struct drm_sched_init_args args = {
.ops = &drm_mock_scheduler_ops,
.num_rqs = DRM_SCHED_PRIORITY_COUNT,
.credit_limit = U32_MAX,
.hang_limit = 1,
.timeout = MAX_SCHEDULE_TIMEOUT,
.timeout = timeout,
.name = "drm-mock-scheduler",
};
struct drm_mock_scheduler *sched;

4
drivers/gpu/drm/scheduler/tests/sched_tests.h
View File

@@ -97,6 +97,7 @@ struct drm_mock_sched_job {
struct completion done;
#define DRM_MOCK_SCHED_JOB_DONE 0x1
#define DRM_MOCK_SCHED_JOB_TIMEDOUT 0x2
unsigned long flags;
struct list_head link;
@@ -129,7 +130,8 @@ drm_sched_job_to_mock_job(struct drm_sched_job *sched_job)
return container_of(sched_job, struct drm_mock_sched_job, base);
};
struct drm_mock_scheduler *drm_mock_sched_new(struct kunit *test);
struct drm_mock_scheduler *drm_mock_sched_new(struct kunit *test,
long timeout);
void drm_mock_sched_fini(struct drm_mock_scheduler *sched);
unsigned int drm_mock_sched_advance(struct drm_mock_scheduler *sched,
unsigned int num);

64
drivers/gpu/drm/scheduler/tests/tests_basic.c
View File

@@ -12,7 +12,7 @@
static int drm_sched_basic_init(struct kunit *test)
{
test->priv = drm_mock_sched_new(test);
test->priv = drm_mock_sched_new(test, MAX_SCHEDULE_TIMEOUT);
return 0;
}
@@ -24,6 +24,13 @@ static void drm_sched_basic_exit(struct kunit *test)
drm_mock_sched_fini(sched);
}
static int drm_sched_timeout_init(struct kunit *test)
{
test->priv = drm_mock_sched_new(test, HZ);
return 0;
}
static void drm_sched_basic_submit(struct kunit *test)
{
struct drm_mock_scheduler *sched = test->priv;
@@ -195,4 +202,57 @@ static struct kunit_suite drm_sched_basic = {
.test_cases = drm_sched_basic_tests,
};
kunit_test_suite(drm_sched_basic);
static void drm_sched_basic_timeout(struct kunit *test)
{
struct drm_mock_scheduler *sched = test->priv;
struct drm_mock_sched_entity *entity;
struct drm_mock_sched_job *job;
bool done;
/*
* Submit a single job against a scheduler with the timeout configured
* and verify that the timeout handling will run if the backend fails
* to complete it in time.
*/
entity = drm_mock_sched_entity_new(test,
DRM_SCHED_PRIORITY_NORMAL,
sched);
job = drm_mock_sched_job_new(test, entity);
drm_mock_sched_job_submit(job);
done = drm_mock_sched_job_wait_scheduled(job, HZ);
KUNIT_ASSERT_TRUE(test, done);
done = drm_mock_sched_job_wait_finished(job, HZ / 2);
KUNIT_ASSERT_FALSE(test, done);
KUNIT_ASSERT_EQ(test,
job->flags & DRM_MOCK_SCHED_JOB_TIMEDOUT,
0);
done = drm_mock_sched_job_wait_finished(job, HZ);
KUNIT_ASSERT_FALSE(test, done);
KUNIT_ASSERT_EQ(test,
job->flags & DRM_MOCK_SCHED_JOB_TIMEDOUT,
DRM_MOCK_SCHED_JOB_TIMEDOUT);
drm_mock_sched_entity_free(entity);
}
static struct kunit_case drm_sched_timeout_tests[] = {
KUNIT_CASE(drm_sched_basic_timeout),
{}
};
static struct kunit_suite drm_sched_timeout = {
.name = "drm_sched_basic_timeout_tests",
.init = drm_sched_timeout_init,
.exit = drm_sched_basic_exit,
.test_cases = drm_sched_timeout_tests,
};
kunit_test_suites(&drm_sched_basic,
&drm_sched_timeout);