[PATCH v2 09/17] drm/v3d: Create tracepoints to track the CPU job

[Maíra Canal]

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 <mca...@igalia.com>
---
 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 a32c91b94898..30a88e557217 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);
+
        v3d_cpu_job_fn[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 955cf3106fdf..337a15b4b594 100644
--- a/drivers/gpu/drm/v3d/v3d_submit.c
+++ b/drivers/gpu/drm/v3d/v3d_submit.c
@@ -806,6 +806,8 @@ 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, (void *)&cpu_job, sizeof(*cpu_job),
                           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),
-- 
2.41.0