From 1472e7549f84c472a9ebb9a8bb0aaafe985ea608 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ma=C3=ADra=20Canal?= Date: Mon, 14 Jul 2025 19:07:05 -0300 Subject: [PATCH 4353/5403] drm/sched: Add new test for DRM_GPU_SCHED_STAT_NO_HANG MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add a test to submit a single job against a scheduler with the timeout configured and verify that if the job is still running, the timeout handler will skip the reset and allow the job to complete. Reviewed-by: Tvrtko Ursulin Reviewed-by: Philipp Stanner Link: https://lore.kernel.org/r/20250714-sched-skip-reset-v6-4-5c5ba4f55039@igalia.com Signed-off-by: Maíra Canal --- .../gpu/drm/scheduler/tests/mock_scheduler.c | 5 +++ drivers/gpu/drm/scheduler/tests/sched_tests.h | 1 + drivers/gpu/drm/scheduler/tests/tests_basic.c | 43 +++++++++++++++++++ 3 files changed, 49 insertions(+) diff --git a/drivers/gpu/drm/scheduler/tests/mock_scheduler.c b/drivers/gpu/drm/scheduler/tests/mock_scheduler.c index ad96e8db13c4..65acffc3fea8 100644 --- a/drivers/gpu/drm/scheduler/tests/mock_scheduler.c +++ b/drivers/gpu/drm/scheduler/tests/mock_scheduler.c @@ -218,6 +218,11 @@ mock_sched_timedout_job(struct drm_sched_job *sched_job) struct drm_mock_sched_job *job = drm_sched_job_to_mock_job(sched_job); unsigned long flags; + if (job->flags & DRM_MOCK_SCHED_JOB_DONT_RESET) { + job->flags &= ~DRM_MOCK_SCHED_JOB_DONT_RESET; + return DRM_GPU_SCHED_STAT_NO_HANG; + } + spin_lock_irqsave(&sched->lock, flags); if (!dma_fence_is_signaled_locked(&job->hw_fence)) { list_del(&job->link); diff --git a/drivers/gpu/drm/scheduler/tests/sched_tests.h b/drivers/gpu/drm/scheduler/tests/sched_tests.h index 0eddfb8d89e6..63d4f2ac7074 100644 --- a/drivers/gpu/drm/scheduler/tests/sched_tests.h +++ b/drivers/gpu/drm/scheduler/tests/sched_tests.h @@ -97,6 +97,7 @@ struct drm_mock_sched_job { #define DRM_MOCK_SCHED_JOB_DONE 0x1 #define DRM_MOCK_SCHED_JOB_TIMEDOUT 0x2 +#define DRM_MOCK_SCHED_JOB_DONT_RESET 0x4 unsigned long flags; struct list_head link; diff --git a/drivers/gpu/drm/scheduler/tests/tests_basic.c b/drivers/gpu/drm/scheduler/tests/tests_basic.c index 8153c2e7af77..55eb142bd7c5 100644 --- a/drivers/gpu/drm/scheduler/tests/tests_basic.c +++ b/drivers/gpu/drm/scheduler/tests/tests_basic.c @@ -287,8 +287,51 @@ static void drm_sched_basic_timeout(struct kunit *test) drm_mock_sched_entity_free(entity); } +static void drm_sched_skip_reset(struct kunit *test) +{ + struct drm_mock_scheduler *sched = test->priv; + struct drm_mock_sched_entity *entity; + struct drm_mock_sched_job *job; + unsigned int i; + bool done; + + /* + * Submit a single job against a scheduler with the timeout configured + * and verify that if the job is still running, the timeout handler + * will skip the reset and allow the job to complete. + */ + + entity = drm_mock_sched_entity_new(test, + DRM_SCHED_PRIORITY_NORMAL, + sched); + job = drm_mock_sched_job_new(test, entity); + + job->flags = DRM_MOCK_SCHED_JOB_DONT_RESET; + + 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, 2 * MOCK_TIMEOUT); + KUNIT_ASSERT_FALSE(test, done); + + KUNIT_ASSERT_EQ(test, + job->flags & DRM_MOCK_SCHED_JOB_DONT_RESET, + 0); + + i = drm_mock_sched_advance(sched, 1); + KUNIT_ASSERT_EQ(test, i, 1); + + done = drm_mock_sched_job_wait_finished(job, HZ); + KUNIT_ASSERT_TRUE(test, done); + + drm_mock_sched_entity_free(entity); +} + static struct kunit_case drm_sched_timeout_tests[] = { KUNIT_CASE(drm_sched_basic_timeout), + KUNIT_CASE(drm_sched_skip_reset), {} }; -- 2.54.0