[PATCH v4 09/17] drm/v3d: Create tracepoints to track the CPU job

[Maíra Canal <mcanal@xxxxxxxxxx>]

Create tracepoints to track the three major events of a CPU job
lifetime:
	1. Submission of a `v3d_submit_cpu` IOCTL
	2. Beginning of the execution of a CPU job
	3. Ending of the execution of a CPU job

Signed-off-by: Maíra Canal <mcanal@xxxxxxxxxx>
Reviewed-by: Iago Toral Quiroga <itoral@xxxxxxxxxx>
---
 drivers/gpu/drm/v3d/v3d_sched.c  |  4 +++
 drivers/gpu/drm/v3d/v3d_submit.c |  2 ++
 drivers/gpu/drm/v3d/v3d_trace.h  | 57 ++++++++++++++++++++++++++++++++
 3 files changed, 63 insertions(+)

diff --git a/drivers/gpu/drm/v3d/v3d_sched.c b/drivers/gpu/drm/v3d/v3d_sched.c
index c89e92fc614c..ebbd00840a73 100644
--- a/drivers/gpu/drm/v3d/v3d_sched.c
+++ b/drivers/gpu/drm/v3d/v3d_sched.c
@@ -288,8 +288,12 @@ v3d_cpu_job_run(struct drm_sched_job *sched_job)
 	file->start_ns[V3D_CPU] = local_clock();
 	v3d->queue[V3D_CPU].start_ns = file->start_ns[V3D_CPU];
 
+	trace_v3d_cpu_job_begin(&v3d->drm, job->job_type);
+
 	cpu_job_function[job->job_type](job);
 
+	trace_v3d_cpu_job_end(&v3d->drm, job->job_type);
+
 	runtime = local_clock() - file->start_ns[V3D_CPU];
 
 	file->enabled_ns[V3D_CPU] += runtime;
diff --git a/drivers/gpu/drm/v3d/v3d_submit.c b/drivers/gpu/drm/v3d/v3d_submit.c
index 124935547f17..c134b113b181 100644
--- a/drivers/gpu/drm/v3d/v3d_submit.c
+++ b/drivers/gpu/drm/v3d/v3d_submit.c
@@ -824,6 +824,8 @@ v3d_submit_cpu_ioctl(struct drm_device *dev, void *data,
 		goto fail;
 	}
 
+	trace_v3d_submit_cpu_ioctl(&v3d->drm, cpu_job->job_type);
+
 	ret = v3d_job_init(v3d, file_priv, &cpu_job->base,
 			   v3d_job_free, 0, &se, V3D_CPU);
 	if (ret)
diff --git a/drivers/gpu/drm/v3d/v3d_trace.h b/drivers/gpu/drm/v3d/v3d_trace.h
index 7aa8dc356e54..06086ece6e9e 100644
--- a/drivers/gpu/drm/v3d/v3d_trace.h
+++ b/drivers/gpu/drm/v3d/v3d_trace.h
@@ -225,6 +225,63 @@ TRACE_EVENT(v3d_submit_csd,
 		      __entry->seqno)
 );
 
+TRACE_EVENT(v3d_submit_cpu_ioctl,
+	   TP_PROTO(struct drm_device *dev, enum v3d_cpu_job_type job_type),
+	   TP_ARGS(dev, job_type),
+
+	   TP_STRUCT__entry(
+			    __field(u32, dev)
+			    __field(enum v3d_cpu_job_type, job_type)
+			    ),
+
+	   TP_fast_assign(
+			  __entry->dev = dev->primary->index;
+			  __entry->job_type = job_type;
+			  ),
+
+	   TP_printk("dev=%u, job_type=%d",
+		     __entry->dev,
+		     __entry->job_type)
+);
+
+TRACE_EVENT(v3d_cpu_job_begin,
+	    TP_PROTO(struct drm_device *dev, enum v3d_cpu_job_type job_type),
+	    TP_ARGS(dev, job_type),
+
+	    TP_STRUCT__entry(
+			     __field(u32, dev)
+			     __field(enum v3d_cpu_job_type, job_type)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->dev = dev->primary->index;
+			   __entry->job_type = job_type;
+			   ),
+
+	    TP_printk("dev=%u, job_type=%d",
+		      __entry->dev,
+		      __entry->job_type)
+);
+
+TRACE_EVENT(v3d_cpu_job_end,
+	    TP_PROTO(struct drm_device *dev, enum v3d_cpu_job_type job_type),
+	    TP_ARGS(dev, job_type),
+
+	    TP_STRUCT__entry(
+			     __field(u32, dev)
+			     __field(enum v3d_cpu_job_type, job_type)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->dev = dev->primary->index;
+			   __entry->job_type = job_type;
+			   ),
+
+	    TP_printk("dev=%u, job_type=%d",
+		      __entry->dev,
+		      __entry->job_type)
+);
+
 TRACE_EVENT(v3d_cache_clean_begin,
 	    TP_PROTO(struct drm_device *dev),
 	    TP_ARGS(dev),
-- 
2.42.0