[PATCH] drm/sched: add run job trace

[Lucas Stach]

From: Robert Beckett <bob.beckett at collabora.com>

Add a new trace event to show when jobs are run on the HW.

Signed-off-by: Robert Beckett <bob.beckett at collabora.com>
Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
---
 .../gpu/drm/scheduler/gpu_scheduler_trace.h   | 27 +++++++++++++++++++
 drivers/gpu/drm/scheduler/sched_main.c        |  1 +
 2 files changed, 28 insertions(+)

diff --git a/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h b/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h
index d79086498aff..877ce9b127f1 100644
--- a/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h
+++ b/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h
@@ -59,6 +59,33 @@ TRACE_EVENT(drm_sched_job,
 		      __entry->job_count, __entry->hw_job_count)
 );
 
+TRACE_EVENT(drm_run_job,
+	    TP_PROTO(struct drm_sched_job *sched_job, struct drm_sched_entity *entity),
+	    TP_ARGS(sched_job, entity),
+	    TP_STRUCT__entry(
+			     __field(struct drm_sched_entity *, entity)
+			     __field(struct dma_fence *, fence)
+			     __field(const char *, name)
+			     __field(uint64_t, id)
+			     __field(u32, job_count)
+			     __field(int, hw_job_count)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->entity = entity;
+			   __entry->id = sched_job->id;
+			   __entry->fence = &sched_job->s_fence->finished;
+			   __entry->name = sched_job->sched->name;
+			   __entry->job_count = spsc_queue_count(&entity->job_queue);
+			   __entry->hw_job_count = atomic_read(
+				   &sched_job->sched->hw_rq_count);
+			   ),
+	    TP_printk("entity=%p, id=%llu, fence=%p, ring=%s, job count:%u, hw job count:%d",
+		      __entry->entity, __entry->id,
+		      __entry->fence, __entry->name,
+		      __entry->job_count, __entry->hw_job_count)
+);
+
 TRACE_EVENT(drm_sched_process_job,
 	    TP_PROTO(struct drm_sched_fence *fence),
 	    TP_ARGS(fence),
diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
index 71ce6215956f..34231b7163cc 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -773,6 +773,7 @@ static int drm_sched_main(void *param)
 		atomic_inc(&sched->hw_rq_count);
 		drm_sched_job_begin(sched_job);
 
+		trace_drm_run_job(sched_job, entity);
 		fence = sched->ops->run_job(sched_job);
 		drm_sched_fence_scheduled(s_fence);
 
-- 
2.20.1