[Intel-gfx] [RFC 8/9] drm/i915: Updated request structure tracing

[John.C.Harrison at Intel.com]

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

Added the '_complete' trace event which occurs when a fence/request is signaled
as complete. Also moved the notify event from the IRQ handler code to inside the
notify function itself.

For: VIZ-5190
Signed-off-by: John Harrison <John.C.Harrison at Intel.com>
---
 drivers/gpu/drm/i915/i915_gem.c   | 3 +++
 drivers/gpu/drm/i915/i915_irq.c   | 2 --
 drivers/gpu/drm/i915/i915_trace.h | 7 +++++--
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 7c589a9..3f20087 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2752,6 +2752,8 @@ void i915_gem_request_notify(struct intel_engine_cs *ring)
 	u32 seqno;
 	LIST_HEAD(free_list);
 
+	trace_i915_gem_request_notify(ring);
+
 	if (list_empty(&ring->fence_signal_list))
 		return;
 
@@ -2764,6 +2766,7 @@ void i915_gem_request_notify(struct intel_engine_cs *ring)
 				continue;
 
 			fence_signal_locked(&req->fence);
+			trace_i915_gem_request_complete(req);
 		}
 
 		list_del_init(&req->signal_list);
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index e446509..d4500cc 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -851,8 +851,6 @@ static void notify_ring(struct intel_engine_cs *ring)
 	if (!intel_ring_initialized(ring))
 		return;
 
-	trace_i915_gem_request_notify(ring);
-
 	i915_gem_request_notify(ring);
 
 	wake_up_all(&ring->irq_queue);
diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
index 2f34c47..f455194 100644
--- a/drivers/gpu/drm/i915/i915_trace.h
+++ b/drivers/gpu/drm/i915/i915_trace.h
@@ -532,16 +532,19 @@ TRACE_EVENT(i915_gem_request_notify,
 			     __field(u32, dev)
 			     __field(u32, ring)
 			     __field(u32, seqno)
+			     __field(bool, is_empty)
 			     ),
 
 	    TP_fast_assign(
 			   __entry->dev = ring->dev->primary->index;
 			   __entry->ring = ring->id;
 			   __entry->seqno = ring->get_seqno(ring, false);
+			   __entry->is_empty = list_empty(&ring->fence_signal_list);
 			   ),
 
-	    TP_printk("dev=%u, ring=%u, seqno=%u",
-		      __entry->dev, __entry->ring, __entry->seqno)
+	    TP_printk("dev=%u, ring=%u, seqno=%u, empty=%d",
+		      __entry->dev, __entry->ring, __entry->seqno,
+		      __entry->is_empty)
 );
 
 DEFINE_EVENT(i915_gem_request, i915_gem_request_retire,
-- 
1.9.1