[PATCH] drm/amdgpu: trace amdgpu_job fence details

[Andres Rodriguez]

This trace is intended to provide the required information to associate
the completion of an amdgpu_job with its corresponding dma_fence_*
tracepoints.

Signed-off-by: Andres Rodriguez <andresx7 at gmail.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_job.c   |  2 ++
 drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h | 22 ++++++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
index 86a1242..84a04e4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -177,6 +177,8 @@ static struct dma_fence *amdgpu_job_run(struct amd_sched_job *sched_job)
 	/* if gpu reset, hw fence will be replaced here */
 	dma_fence_put(job->fence);
 	job->fence = dma_fence_get(fence);
+	trace_amdgpu_job_attach_fence(job);
+
 	amdgpu_job_free_resources(job);
 	return fence;
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h
index a18ae1e..0a61ed9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h
@@ -147,6 +147,28 @@ TRACE_EVENT(amdgpu_sched_run_job,
 		      __entry->fence, __entry->ring_name, __entry->num_ibs)
 );
 
+TRACE_EVENT(amdgpu_job_attach_fence,
+	    TP_PROTO(struct amdgpu_job *job),
+	    TP_ARGS(job),
+	    TP_STRUCT__entry(
+			     __field(struct amdgpu_device *, adev)
+			     __field(struct amd_sched_job *, sched_job)
+			     __string(timeline, job->fence->ops->get_timeline_name(job->fence))
+			     __field(unsigned int, context)
+			     __field(unsigned int, seqno)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->adev = job->adev;
+			   __entry->sched_job = &job->base;
+			   __assign_str(timeline, job->fence->ops->get_timeline_name(job->fence))
+			   __entry->context = job->fence->context;
+			   __entry->seqno = job->fence->seqno;
+			   ),
+	    TP_printk("adev=%p, sched_job=%p, timeline:%s, context:%u, seqno:%u",
+		      __entry->adev, __entry->sched_job,
+		      __get_str(timeline), __entry->context, __entry->seqno)
+);
 
 TRACE_EVENT(amdgpu_vm_grab_id,
 	    TP_PROTO(struct amdgpu_vm *vm, int ring, struct amdgpu_job *job),
-- 
2.9.3