drm/i915: Rename request reference/unreference to get/put

Now that we derive requests from struct fence, swap over to its
nomenclature for references. It's shorter and more idiomatic across the
kernel.

s/i915_gem_request_reference/i915_gem_request_get/
s/i915_gem_request_unreference/i915_gem_request_put/

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1469005202-9659-2-git-send-email-chris@chris-wilson.co.uk
Link: http://patchwork.freedesktop.org/patch/msgid/1469017917-15134-1-git-send-email-chris@chris-wilson.co.uk

drivers/gpu/drm/i915/i915_gem.c

@@ -1422,7 +1422,7 @@ i915_gem_object_wait_rendering__nonblocking(struct drm_i915_gem_object *obj,
 		if (req == NULL)
 			return 0;
 
-		requests[n++] = i915_gem_request_reference(req);
+		requests[n++] = i915_gem_request_get(req);
 	} else {
 		for (i = 0; i < I915_NUM_ENGINES; i++) {
 			struct drm_i915_gem_request *req;
@@ -1431,7 +1431,7 @@ i915_gem_object_wait_rendering__nonblocking(struct drm_i915_gem_object *obj,
 			if (req == NULL)
 				continue;
 
-			requests[n++] = i915_gem_request_reference(req);
+			requests[n++] = i915_gem_request_get(req);
 		}
 	}
 
@@ -1444,7 +1444,7 @@ i915_gem_object_wait_rendering__nonblocking(struct drm_i915_gem_object *obj,
 	for (i = 0; i < n; i++) {
 		if (ret == 0)
 			i915_gem_object_retire_request(obj, requests[i]);
-		i915_gem_request_unreference(requests[i]);
+		i915_gem_request_put(requests[i]);
 	}
 
 	return ret;
@@ -2820,7 +2820,7 @@ i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
 		if (obj->last_read_req[i] == NULL)
 			continue;
 
-		req[n++] = i915_gem_request_reference(obj->last_read_req[i]);
+		req[n++] = i915_gem_request_get(obj->last_read_req[i]);
 	}
 
 	mutex_unlock(&dev->struct_mutex);
@@ -2830,7 +2830,7 @@ i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
 			ret = __i915_wait_request(req[i], true,
 						  args->timeout_ns > 0 ? &args->timeout_ns : NULL,
 						  to_rps_client(file));
-		i915_gem_request_unreference(req[i]);
+		i915_gem_request_put(req[i]);
 	}
 	return ret;
 
@@ -3845,14 +3845,14 @@ i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file)
 		target = request;
 	}
 	if (target)
-		i915_gem_request_reference(target);
+		i915_gem_request_get(target);
 	spin_unlock(&file_priv->mm.lock);
 
 	if (target == NULL)
 		return 0;
 
 	ret = __i915_wait_request(target, true, NULL, NULL);
-	i915_gem_request_unreference(target);
+	i915_gem_request_put(target);
 
 	return ret;
 }

drivers/gpu/drm/i915/i915_gem_request.c

@@ -181,7 +181,7 @@ static void i915_gem_request_retire(struct drm_i915_gem_request *request)
 	}
 
 	i915_gem_context_unreference(request->ctx);
-	i915_gem_request_unreference(request);
+	i915_gem_request_put(request);
 }
 
 void i915_gem_request_retire_upto(struct drm_i915_gem_request *req)

drivers/gpu/drm/i915/i915_gem_request.h

@@ -174,13 +174,13 @@ to_request(struct fence *fence)
 }
 
 static inline struct drm_i915_gem_request *
-i915_gem_request_reference(struct drm_i915_gem_request *req)
+i915_gem_request_get(struct drm_i915_gem_request *req)
 {
 	return to_request(fence_get(&req->fence));
 }
 
 static inline void
-i915_gem_request_unreference(struct drm_i915_gem_request *req)
+i915_gem_request_put(struct drm_i915_gem_request *req)
 {
 	fence_put(&req->fence);
 }
@@ -189,10 +189,10 @@ static inline void i915_gem_request_assign(struct drm_i915_gem_request **pdst,
 					   struct drm_i915_gem_request *src)
 {
 	if (src)
-		i915_gem_request_reference(src);
+		i915_gem_request_get(src);
 
 	if (*pdst)
-		i915_gem_request_unreference(*pdst);
+		i915_gem_request_put(*pdst);
 
 	*pdst = src;
 }

drivers/gpu/drm/i915/i915_gem_userptr.c

@@ -78,7 +78,7 @@ static void wait_rendering(struct drm_i915_gem_object *obj)
 		if (req == NULL)
 			continue;
 
-		requests[n++] = i915_gem_request_reference(req);
+		requests[n++] = i915_gem_request_get(req);
 	}
 
 	mutex_unlock(&dev->struct_mutex);
@@ -89,7 +89,7 @@ static void wait_rendering(struct drm_i915_gem_object *obj)
 	mutex_lock(&dev->struct_mutex);
 
 	for (i = 0; i < n; i++)
-		i915_gem_request_unreference(requests[i]);
+		i915_gem_request_put(requests[i]);
 }
 
 static void cancel_userptr(struct work_struct *work)

drivers/gpu/drm/i915/intel_breadcrumbs.c

@@ -453,7 +453,7 @@ static int intel_breadcrumbs_signaler(void *arg)
 			rb_erase(&request->signaling.node, &b->signals);
 			spin_unlock(&b->lock);
 
-			i915_gem_request_unreference(request);
+			i915_gem_request_put(request);
 		} else {
 			if (kthread_should_stop())
 				break;
@@ -484,7 +484,7 @@ void intel_engine_enable_signaling(struct drm_i915_gem_request *request)
 
 	request->signaling.wait.tsk = b->signaler;
 	request->signaling.wait.seqno = request->fence.seqno;
-	i915_gem_request_reference(request);
+	i915_gem_request_get(request);
 
 	/* First add ourselves into the list of waiters, but register our
 	 * bottom-half as the signaller thread. As per usual, only the oldest

drivers/gpu/drm/i915/intel_display.c

@@ -10954,11 +10954,10 @@ static void intel_unpin_work_fn(struct work_struct *__work)
 	mutex_lock(&dev->struct_mutex);
 	intel_unpin_fb_obj(work->old_fb, primary->state->rotation);
 	drm_gem_object_unreference(&work->pending_flip_obj->base);
-
-	if (work->flip_queued_req)
-		i915_gem_request_assign(&work->flip_queued_req, NULL);
 	mutex_unlock(&dev->struct_mutex);
 
+	i915_gem_request_put(work->flip_queued_req);
+
 	intel_frontbuffer_flip_complete(dev, to_intel_plane(primary)->frontbuffer_bit);
 	intel_fbc_post_update(crtc);
 	drm_framebuffer_unreference(work->old_fb);

drivers/gpu/drm/i915/intel_lrc.c

@@ -441,7 +441,7 @@ static void execlists_context_unqueue(struct intel_engine_cs *engine)
 			 * will update tail past first request's workload */
 			cursor->elsp_submitted = req0->elsp_submitted;
 			list_del(&req0->execlist_link);
-			i915_gem_request_unreference(req0);
+			i915_gem_request_put(req0);
 			req0 = cursor;
 		} else {
 			if (IS_ENABLED(CONFIG_DRM_I915_GVT)) {
@@ -514,7 +514,7 @@ execlists_check_remove_request(struct intel_engine_cs *engine, u32 ctx_id)
 	execlists_context_status_change(head_req, INTEL_CONTEXT_SCHEDULE_OUT);
 
 	list_del(&head_req->execlist_link);
-	i915_gem_request_unreference(head_req);
+	i915_gem_request_put(head_req);
 
 	return 1;
 }
@@ -632,11 +632,11 @@ static void execlists_context_queue(struct drm_i915_gem_request *request)
 			WARN(tail_req->elsp_submitted != 0,
 				"More than 2 already-submitted reqs queued\n");
 			list_del(&tail_req->execlist_link);
-			i915_gem_request_unreference(tail_req);
+			i915_gem_request_put(tail_req);
 		}
 	}
 
-	i915_gem_request_reference(request);
+	i915_gem_request_get(request);
 	list_add_tail(&request->execlist_link, &engine->execlist_queue);
 	request->ctx_hw_id = request->ctx->hw_id;
 	if (num_elements == 0)
@@ -904,7 +904,7 @@ void intel_execlists_cancel_requests(struct intel_engine_cs *engine)
 
 	list_for_each_entry_safe(req, tmp, &cancel_list, execlist_link) {
 		list_del(&req->execlist_link);
-		i915_gem_request_unreference(req);
+		i915_gem_request_put(req);
 	}
 }
 

drivers/gpu/drm/i915/intel_pm.c

@@ -7775,7 +7775,7 @@ static void __intel_rps_boost_work(struct work_struct *work)
 	if (!i915_gem_request_completed(req))
 		gen6_rps_boost(req->i915, NULL, req->emitted_jiffies);
 
-	i915_gem_request_unreference(req);
+	i915_gem_request_put(req);
 	kfree(boost);
 }
 
@@ -7793,8 +7793,7 @@ void intel_queue_rps_boost_for_request(struct drm_i915_gem_request *req)
 	if (boost == NULL)
 		return;
 
-	i915_gem_request_reference(req);
-	boost->req = req;
+	boost->req = i915_gem_request_get(req);
 
 	INIT_WORK(&boost->work, __intel_rps_boost_work);
 	queue_work(req->i915->wq, &boost->work);