[RFC PATCH 57/97] drm/i915/guc: Add several request trace points

[Matthew Brost]

Add trace points for request dependencies and GuC submit. Extended
existing request trace points to include submit fence value,, guc_id,
and ring tail value.

Cc: John Harrison <john.c.harrison at intel.com>
Signed-off-by: Matthew Brost <matthew.brost at intel.com>
---
 .../gpu/drm/i915/gt/uc/intel_guc_submission.c |  3 ++
 drivers/gpu/drm/i915/i915_request.c           |  3 ++
 drivers/gpu/drm/i915/i915_trace.h             | 39 ++++++++++++++++++-
 3 files changed, 43 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index c7a8968f22c5..87ed00f272e7 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -421,6 +421,7 @@ static int guc_dequeue_one_context(struct intel_guc *guc)
 			guc->stalled_request = last;
 			return false;
 		}
+		trace_i915_request_guc_submit(last);
 	}
 
 	guc->stalled_request = NULL;
@@ -645,6 +646,8 @@ static int guc_bypass_tasklet_submit(struct intel_guc *guc,
 	ret = guc_add_request(guc, rq);
 	if (ret == -EBUSY)
 		guc->stalled_request = rq;
+	else
+		trace_i915_request_guc_submit(rq);
 
 	return ret;
 }
diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c
index 3a8f6ec0c32d..9542a5baa45a 100644
--- a/drivers/gpu/drm/i915/i915_request.c
+++ b/drivers/gpu/drm/i915/i915_request.c
@@ -1344,6 +1344,9 @@ __i915_request_await_execution(struct i915_request *to,
 			return err;
 	}
 
+	trace_i915_request_dep_to(to);
+	trace_i915_request_dep_from(from);
+
 	/* Couple the dependency tree for PI on this exposed to->fence */
 	if (to->engine->sched_engine->schedule) {
 		err = i915_sched_node_add_dependency(&to->sched,
diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
index 6778ad2a14a4..b02d04b6c8f6 100644
--- a/drivers/gpu/drm/i915/i915_trace.h
+++ b/drivers/gpu/drm/i915/i915_trace.h
@@ -794,22 +794,27 @@ DECLARE_EVENT_CLASS(i915_request,
 	    TP_STRUCT__entry(
 			     __field(u32, dev)
 			     __field(u64, ctx)
+			     __field(u32, guc_id)
 			     __field(u16, class)
 			     __field(u16, instance)
 			     __field(u32, seqno)
+			     __field(u32, tail)
 			     ),
 
 	    TP_fast_assign(
 			   __entry->dev = rq->engine->i915->drm.primary->index;
 			   __entry->class = rq->engine->uabi_class;
 			   __entry->instance = rq->engine->uabi_instance;
+			   __entry->guc_id = rq->context->guc_id;
 			   __entry->ctx = rq->fence.context;
 			   __entry->seqno = rq->fence.seqno;
+			   __entry->tail = rq->tail;
 			   ),
 
-	    TP_printk("dev=%u, engine=%u:%u, ctx=%llu, seqno=%u",
+	    TP_printk("dev=%u, engine=%u:%u, guc_id=%u, ctx=%llu, seqno=%u, tail=%u",
 		      __entry->dev, __entry->class, __entry->instance,
-		      __entry->ctx, __entry->seqno)
+		      __entry->guc_id, __entry->ctx, __entry->seqno,
+		      __entry->tail)
 );
 
 DEFINE_EVENT(i915_request, i915_request_add,
@@ -818,6 +823,21 @@ DEFINE_EVENT(i915_request, i915_request_add,
 );
 
 #if defined(CONFIG_DRM_I915_LOW_LEVEL_TRACEPOINTS)
+DEFINE_EVENT(i915_request, i915_request_dep_to,
+	     TP_PROTO(struct i915_request *rq),
+	     TP_ARGS(rq)
+);
+
+DEFINE_EVENT(i915_request, i915_request_dep_from,
+	     TP_PROTO(struct i915_request *rq),
+	     TP_ARGS(rq)
+);
+
+DEFINE_EVENT(i915_request, i915_request_guc_submit,
+	     TP_PROTO(struct i915_request *rq),
+	     TP_ARGS(rq)
+);
+
 DEFINE_EVENT(i915_request, i915_request_submit,
 	     TP_PROTO(struct i915_request *rq),
 	     TP_ARGS(rq)
@@ -887,6 +907,21 @@ TRACE_EVENT(i915_request_out,
 
 #else
 #if !defined(TRACE_HEADER_MULTI_READ)
+static inline void
+trace_i915_request_dep_to(struct i915_request *rq)
+{
+}
+
+static inline void
+trace_i915_request_dep_from(struct i915_request *rq)
+{
+}
+
+static inline void
+trace_i915_request_guc_submit(struct i915_request *rq)
+{
+}
+
 static inline void
 trace_i915_request_submit(struct i915_request *rq)
 {
-- 
2.28.0