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drm/sched/tests: Implement cancel_job() callback

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The GPU Scheduler now supports a new callback, cancel_job(), which lets
the scheduler cancel all jobs which might not yet be freed when
drm_sched_fini() runs. Using this callback allows for significantly
simplifying the mock scheduler teardown code.

Implement the cancel_job() callback and adjust the code where necessary.

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://lore.kernel.org/r/20250710125412.128476-5-phasta@kernel.org
This commit is contained in:
Philipp Stanner
2025-07-10 14:54:07 +02:00
parent bf8bbaefaa
commit 4576de9b79
2 changed files with 25 additions and 44 deletions
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68
drivers/gpu/drm/scheduler/tests/mock_scheduler.c
View File

@@ -63,7 +63,7 @@ static void drm_mock_sched_job_complete(struct drm_mock_sched_job *job)
lockdep_assert_held(&sched->lock);
job->flags |= DRM_MOCK_SCHED_JOB_DONE;
list_move_tail(&job->link, &sched->done_list);
list_del(&job->link);
dma_fence_signal_locked(&job->hw_fence);
complete(&job->done);
}
@@ -236,26 +236,41 @@ mock_sched_timedout_job(struct drm_sched_job *sched_job)
static void mock_sched_free_job(struct drm_sched_job *sched_job)
{
struct drm_mock_scheduler *sched =
drm_sched_to_mock_sched(sched_job->sched);
struct drm_mock_sched_job *job = drm_sched_job_to_mock_job(sched_job);
unsigned long flags;
/* Remove from the scheduler done list. */
spin_lock_irqsave(&sched->lock, flags);
list_del(&job->link);
spin_unlock_irqrestore(&sched->lock, flags);
dma_fence_put(&job->hw_fence);
drm_sched_job_cleanup(sched_job);
/* Mock job itself is freed by the kunit framework. */
}
static void mock_sched_cancel_job(struct drm_sched_job *sched_job)
{
struct drm_mock_scheduler *sched = drm_sched_to_mock_sched(sched_job->sched);
struct drm_mock_sched_job *job = drm_sched_job_to_mock_job(sched_job);
unsigned long flags;
hrtimer_cancel(&job->timer);
spin_lock_irqsave(&sched->lock, flags);
if (!dma_fence_is_signaled_locked(&job->hw_fence)) {
list_del(&job->link);
dma_fence_set_error(&job->hw_fence, -ECANCELED);
dma_fence_signal_locked(&job->hw_fence);
}
spin_unlock_irqrestore(&sched->lock, flags);
/*
* The GPU Scheduler will call drm_sched_backend_ops.free_job(), still.
* Mock job itself is freed by the kunit framework.
*/
}
static const struct drm_sched_backend_ops drm_mock_scheduler_ops = {
.run_job = mock_sched_run_job,
.timedout_job = mock_sched_timedout_job,
.free_job = mock_sched_free_job
.free_job = mock_sched_free_job,
.cancel_job = mock_sched_cancel_job,
};
/**
@@ -289,7 +304,6 @@ struct drm_mock_scheduler *drm_mock_sched_new(struct kunit *test, long timeout)
sched->hw_timeline.context = dma_fence_context_alloc(1);
atomic_set(&sched->hw_timeline.next_seqno, 0);
INIT_LIST_HEAD(&sched->job_list);
INIT_LIST_HEAD(&sched->done_list);
spin_lock_init(&sched->lock);
return sched;
@@ -304,38 +318,6 @@ struct drm_mock_scheduler *drm_mock_sched_new(struct kunit *test, long timeout)
*/
void drm_mock_sched_fini(struct drm_mock_scheduler *sched)
{
struct drm_mock_sched_job *job, *next;
unsigned long flags;
LIST_HEAD(list);
drm_sched_wqueue_stop(&sched->base);
/* Force complete all unfinished jobs. */
spin_lock_irqsave(&sched->lock, flags);
list_for_each_entry_safe(job, next, &sched->job_list, link)
list_move_tail(&job->link, &list);
spin_unlock_irqrestore(&sched->lock, flags);
list_for_each_entry(job, &list, link)
hrtimer_cancel(&job->timer);
spin_lock_irqsave(&sched->lock, flags);
list_for_each_entry_safe(job, next, &list, link)
drm_mock_sched_job_complete(job);
spin_unlock_irqrestore(&sched->lock, flags);
/*
* Free completed jobs and jobs not yet processed by the DRM scheduler
* free worker.
*/
spin_lock_irqsave(&sched->lock, flags);
list_for_each_entry_safe(job, next, &sched->done_list, link)
list_move_tail(&job->link, &list);
spin_unlock_irqrestore(&sched->lock, flags);
list_for_each_entry_safe(job, next, &list, link)
mock_sched_free_job(&job->base);
drm_sched_fini(&sched->base);
}

1
drivers/gpu/drm/scheduler/tests/sched_tests.h
View File

@@ -49,7 +49,6 @@ struct drm_mock_scheduler {
spinlock_t lock;
struct list_head job_list;
struct list_head done_list;
struct {
u64 context;