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drm/sched: Add a basic test for checking credit limit

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Add a basic test for checking whether scheduler respects the configured
credit limit.

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/20250324092633.49746-7-tvrtko.ursulin@igalia.com
This commit is contained in:
Tvrtko Ursulin
2025-03-24 09:26:33 +00:00
committed by Philipp Stanner
parent c85fc5db76
commit 909bda2206
1 changed files with 59 additions and 1 deletions
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60
drivers/gpu/drm/scheduler/tests/tests_basic.c
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@@ -412,7 +412,65 @@ static struct kunit_suite drm_sched_modify_sched = {
.test_cases = drm_sched_modify_sched_tests,
};
static void drm_sched_test_credits(struct kunit *test)
{
struct drm_mock_sched_entity *entity;
struct drm_mock_scheduler *sched;
struct drm_mock_sched_job *job[2];
bool done;
int i;
/*
* Check that the configured credit limit is respected.
*/
sched = drm_mock_sched_new(test, MAX_SCHEDULE_TIMEOUT);
sched->base.credit_limit = 1;
entity = drm_mock_sched_entity_new(test,
DRM_SCHED_PRIORITY_NORMAL,
sched);
job[0] = drm_mock_sched_job_new(test, entity);
job[1] = drm_mock_sched_job_new(test, entity);
drm_mock_sched_job_submit(job[0]);
drm_mock_sched_job_submit(job[1]);
done = drm_mock_sched_job_wait_scheduled(job[0], HZ);
KUNIT_ASSERT_TRUE(test, done);
done = drm_mock_sched_job_wait_scheduled(job[1], HZ);
KUNIT_ASSERT_FALSE(test, done);
i = drm_mock_sched_advance(sched, 1);
KUNIT_ASSERT_EQ(test, i, 1);
done = drm_mock_sched_job_wait_scheduled(job[1], HZ);
KUNIT_ASSERT_TRUE(test, done);
i = drm_mock_sched_advance(sched, 1);
KUNIT_ASSERT_EQ(test, i, 1);
done = drm_mock_sched_job_wait_finished(job[1], HZ);
KUNIT_ASSERT_TRUE(test, done);
drm_mock_sched_entity_free(entity);
drm_mock_sched_fini(sched);
}
static struct kunit_case drm_sched_credits_tests[] = {
KUNIT_CASE(drm_sched_test_credits),
{}
};
static struct kunit_suite drm_sched_credits = {
.name = "drm_sched_basic_credits_tests",
.test_cases = drm_sched_credits_tests,
};
kunit_test_suites(&drm_sched_basic,
&drm_sched_timeout,
&drm_sched_priority,
&drm_sched_modify_sched);
&drm_sched_modify_sched,
&drm_sched_credits);