[Intel-gfx] [PATCH v2 28/28] drm/i915: Additional request structure tracing

[John.C.Harrison at Intel.com]

From: John Harrison <John.C.Harrison at Intel.com>

Added the request structure's 'uniq' identifier to the trace information. Also
renamed the '_complete' trace event to '_notify' as it actually happens in the
IRQ 'notify_ring()' function. Additionally there is now a new '_complete' trace
event which occurs when a request structure is marked as complete.

v2: New patch added to series.

For: VIZ-4377
Signed-off-by: John Harrison <John.C.Harrison at Intel.com>
---
 drivers/gpu/drm/i915/i915_gem.c   |    4 +++-
 drivers/gpu/drm/i915/i915_irq.c   |    2 +-
 drivers/gpu/drm/i915/i915_trace.h |   22 ++++++++++++++++------
 3 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index fec8ab7..c35f526 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2759,8 +2759,10 @@ void i915_gem_complete_requests_ring(struct intel_engine_cs *ring,
 		if (req->complete)
 			continue;
 
-		if (i915_seqno_passed(seqno, req->seqno))
+		if (i915_seqno_passed(seqno, req->seqno)) {
 			req->complete = true;
+			trace_i915_gem_request_complete(req);
+		}
 	}
 	spin_unlock_irqrestore(&ring->reqlist_lock, flags);
 
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 415f890..868beb2 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -985,7 +985,7 @@ static void notify_ring(struct drm_device *dev,
 	if (!intel_ring_initialized(ring))
 		return;
 
-	trace_i915_gem_request_complete(ring);
+	trace_i915_gem_request_notify(ring);
 
 	i915_gem_complete_requests_ring(ring, false);
 
diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
index 2ade958..6058a01 100644
--- a/drivers/gpu/drm/i915/i915_trace.h
+++ b/drivers/gpu/drm/i915/i915_trace.h
@@ -406,6 +406,7 @@ DECLARE_EVENT_CLASS(i915_gem_request,
 	    TP_STRUCT__entry(
 			     __field(u32, dev)
 			     __field(u32, ring)
+			     __field(u32, uniq)
 			     __field(u32, seqno)
 			     ),
 
@@ -414,11 +415,13 @@ DECLARE_EVENT_CLASS(i915_gem_request,
 						i915_gem_request_get_ring(req);
 			   __entry->dev = ring->dev->primary->index;
 			   __entry->ring = ring->id;
+			   __entry->uniq = req ? req->uniq : 0;
 			   __entry->seqno = i915_gem_request_get_seqno(req);
 			   ),
 
-	    TP_printk("dev=%u, ring=%u, seqno=%u",
-		      __entry->dev, __entry->ring, __entry->seqno)
+	    TP_printk("dev=%u, ring=%u, uniq=%u, seqno=%u",
+		      __entry->dev, __entry->ring, __entry->uniq,
+		      __entry->seqno)
 );
 
 DEFINE_EVENT(i915_gem_request, i915_gem_request_add,
@@ -426,7 +429,7 @@ DEFINE_EVENT(i915_gem_request, i915_gem_request_add,
 	    TP_ARGS(req)
 );
 
-TRACE_EVENT(i915_gem_request_complete,
+TRACE_EVENT(i915_gem_request_notify,
 	    TP_PROTO(struct intel_engine_cs *ring),
 	    TP_ARGS(ring),
 
@@ -451,6 +454,11 @@ DEFINE_EVENT(i915_gem_request, i915_gem_request_retire,
 	    TP_ARGS(req)
 );
 
+DEFINE_EVENT(i915_gem_request, i915_gem_request_complete,
+	    TP_PROTO(struct drm_i915_gem_request *req),
+	    TP_ARGS(req)
+);
+
 TRACE_EVENT(i915_gem_request_wait_begin,
 	    TP_PROTO(struct drm_i915_gem_request *req),
 	    TP_ARGS(req),
@@ -458,6 +466,7 @@ TRACE_EVENT(i915_gem_request_wait_begin,
 	    TP_STRUCT__entry(
 			     __field(u32, dev)
 			     __field(u32, ring)
+			     __field(u32, uniq)
 			     __field(u32, seqno)
 			     __field(bool, blocking)
 			     ),
@@ -473,14 +482,15 @@ TRACE_EVENT(i915_gem_request_wait_begin,
 						i915_gem_request_get_ring(req);
 			   __entry->dev = ring->dev->primary->index;
 			   __entry->ring = ring->id;
+			   __entry->uniq = req ? req->uniq : 0;
 			   __entry->seqno = i915_gem_request_get_seqno(req);
 			   __entry->blocking =
 				     mutex_is_locked(&ring->dev->struct_mutex);
 			   ),
 
-	    TP_printk("dev=%u, ring=%u, seqno=%u, blocking=%s",
-		      __entry->dev, __entry->ring, __entry->seqno,
-		      __entry->blocking ?  "yes (NB)" : "no")
+	    TP_printk("dev=%u, ring=%u, uniq=%u, seqno=%u, blocking=%s",
+		      __entry->dev, __entry->ring, __entry->uniq,
+		      __entry->seqno, __entry->blocking ?  "yes (NB)" : "no")
 );
 
 DEFINE_EVENT(i915_gem_request, i915_gem_request_wait_end,
-- 
1.7.9.5