[Intel-gfx] [RFC 2/3] Removed duplicate members from submit_request

[Nick Hoath]

Where there were duplicate variables for the tail, context and ring (engine)
in the gem request and the execlist queue item, use the one from the request
and remove the duplicate from the execlist queue item.

Issue: VIZ-4274
Signed-off-by: Nick Hoath <nicholas.hoath at intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c |  4 ++--
 drivers/gpu/drm/i915/i915_gem.c     |  2 +-
 drivers/gpu/drm/i915/intel_lrc.c    | 21 +++++++++------------
 drivers/gpu/drm/i915/intel_lrc.h    |  4 ----
 4 files changed, 12 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 0d6af1c..45da79e 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1891,11 +1891,11 @@ static int i915_execlists(struct seq_file *m, void *data)
 		if (head_req) {
 			struct drm_i915_gem_object *ctx_obj;
 
-			ctx_obj = head_req->ctx->engine[ring_id].state;
+			ctx_obj = head_req->request->ctx->engine[ring_id].state;
 			seq_printf(m, "\tHead request id: %u\n",
 				   intel_execlists_ctx_id(ctx_obj));
 			seq_printf(m, "\tHead request tail: %u\n",
-				   head_req->tail);
+				   head_req->request->tail);
 		}
 
 		seq_putc(m, '\n');
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index b8e7018..f55bfdc 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2623,7 +2623,7 @@ static void i915_gem_reset_ring_cleanup(struct drm_i915_private *dev_priv,
 				execlist_link);
 		list_del(&submit_req->execlist_link);
 		intel_runtime_pm_put(dev_priv);
-		i915_gem_context_unreference(submit_req->ctx);
+		i915_gem_context_unreference(submit_req->request->ctx);
 		kfree(submit_req);
 	}
 
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 8f301ac..3daf8ea 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -396,7 +396,7 @@ static void execlists_context_unqueue(struct intel_engine_cs *ring)
 				 execlist_link) {
 		if (!req0) {
 			req0 = cursor;
-		} else if (req0->ctx == cursor->ctx) {
+		} else if (req0->request->ctx == cursor->request->ctx) {
 			/* Same ctx: ignore first request, as second request
 			 * will update tail past first request's workload */
 			cursor->elsp_submitted = req0->elsp_submitted;
@@ -411,9 +411,9 @@ static void execlists_context_unqueue(struct intel_engine_cs *ring)
 
 	WARN_ON(req1 && req1->elsp_submitted);
 
-	execlists_submit_contexts(ring, req0->ctx, req0->tail,
-				  req1 ? req1->ctx : NULL,
-				  req1 ? req1->tail : 0);
+	execlists_submit_contexts(ring, req0->request->ctx, req0->request->tail,
+				  req1 ? req1->request->ctx : NULL,
+				  req1 ? req1->request->tail : 0);
 
 	req0->elsp_submitted++;
 	if (req1)
@@ -434,7 +434,7 @@ static bool execlists_check_remove_request(struct intel_engine_cs *ring,
 
 	if (head_req != NULL) {
 		struct drm_i915_gem_object *ctx_obj =
-				head_req->ctx->engine[ring->id].state;
+				head_req->request->ctx->engine[ring->id].state;
 		if (intel_execlists_ctx_id(ctx_obj) == request_id) {
 			WARN(head_req->elsp_submitted == 0,
 			     "Never submitted head request\n");
@@ -514,13 +514,13 @@ static void execlists_free_request_task(struct work_struct *work)
 {
 	struct intel_ctx_submit_request *req =
 		container_of(work, struct intel_ctx_submit_request, work);
-	struct drm_device *dev = req->ring->dev;
+	struct drm_device *dev = req->request->ring->dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
 	intel_runtime_pm_put(dev_priv);
 
 	mutex_lock(&dev->struct_mutex);
-	i915_gem_context_unreference(req->ctx);
+	i915_gem_context_unreference(req->request->ctx);
 	i915_gem_request_unreference(req->request);
 	mutex_unlock(&dev->struct_mutex);
 
@@ -540,10 +540,6 @@ static int execlists_context_queue(struct intel_engine_cs *ring,
 	req = kzalloc(sizeof(*req), GFP_KERNEL);
 	if (req == NULL)
 		return -ENOMEM;
-	req->ctx = to;
-	i915_gem_context_reference(req->ctx);
-	req->ring = ring;
-	req->tail = tail;
 	INIT_WORK(&req->work, execlists_free_request_task);
 
 	if(!request)
@@ -561,6 +557,7 @@ static int execlists_context_queue(struct intel_engine_cs *ring,
 	}
 	req->request = request;
 	i915_gem_request_reference(request);
+	i915_gem_context_reference(req->request->ctx);
 
 	intel_runtime_pm_get(dev_priv);
 
@@ -577,7 +574,7 @@ static int execlists_context_queue(struct intel_engine_cs *ring,
 					   struct intel_ctx_submit_request,
 					   execlist_link);
 
-		if (to == tail_req->ctx) {
+		if (to == tail_req->request->ctx) {
 			WARN(tail_req->elsp_submitted != 0,
 			     "More than 2 already-submitted reqs queued\n");
 			list_del(&tail_req->execlist_link);
diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h
index 6f81669..76141ce 100644
--- a/drivers/gpu/drm/i915/intel_lrc.h
+++ b/drivers/gpu/drm/i915/intel_lrc.h
@@ -100,10 +100,6 @@ u32 intel_execlists_ctx_id(struct drm_i915_gem_object *ctx_obj);
  * All accesses to the queue are mediated by a spinlock (ring->execlist_lock).
  */
 struct intel_ctx_submit_request {
-	struct intel_context *ctx;
-	struct intel_engine_cs *ring;
-	u32 tail;
-
 	struct list_head execlist_link;
 	struct work_struct work;
 
-- 
2.1.1