drm/i915: Convert RPS tracking to a intel_rps_client struct

Now that we have internal clients, rather than faking a whole
drm_i915_file_private just for tracking RPS boosts, create a new struct
intel_rps_client and pass it along when waiting.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: s/rq/req/]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_debugfs.c

@@ -2307,12 +2307,16 @@ static int i915_rps_boost_info(struct seq_file *m, void *data)
 		seq_printf(m, "%s [%d]: %d boosts%s\n",
 			   task ? task->comm : "<unknown>",
 			   task ? task->pid : -1,
-			   file_priv->rps_boosts,
-			   list_empty(&file_priv->rps_boost) ? "" : ", active");
+			   file_priv->rps.boosts,
+			   list_empty(&file_priv->rps.link) ? "" : ", active");
 		rcu_read_unlock();
 	}
-	seq_printf(m, "Semaphore boosts: %d\n", dev_priv->rps.semaphores.rps_boosts);
-	seq_printf(m, "MMIO flip boosts: %d\n", dev_priv->rps.mmioflips.rps_boosts);
+	seq_printf(m, "Semaphore boosts: %d%s\n",
+		   dev_priv->rps.semaphores.boosts,
+		   list_empty(&dev_priv->rps.semaphores.link) ? "" : ", active");
+	seq_printf(m, "MMIO flip boosts: %d%s\n",
+		   dev_priv->rps.mmioflips.boosts,
+		   list_empty(&dev_priv->rps.mmioflips.link) ? "" : ", active");
 	seq_printf(m, "Kernel boosts: %d\n", dev_priv->rps.boosts);
 
 	mutex_unlock(&dev_priv->rps.hw_lock);

drivers/gpu/drm/i915/i915_drv.h

@@ -282,10 +282,12 @@ struct drm_i915_file_private {
 	} mm;
 	struct idr context_idr;
 
-	struct list_head rps_boost;
-	struct intel_engine_cs *bsd_ring;
+	struct intel_rps_client {
+		struct list_head link;
+		unsigned boosts;
+	} rps;
 
-	unsigned rps_boosts;
+	struct intel_engine_cs *bsd_ring;
 };
 
 enum intel_dpll_id {
@@ -1086,8 +1088,7 @@ struct intel_gen6_power_mgmt {
 	struct list_head clients;
 	unsigned boosts;
 
-	struct drm_i915_file_private semaphores;
-	struct drm_i915_file_private mmioflips;
+	struct intel_rps_client semaphores, mmioflips;
 
 	/* manual wa residency calculations */
 	struct intel_rps_ei up_ei, down_ei;
@@ -2856,7 +2857,7 @@ int __i915_wait_request(struct drm_i915_gem_request *req,
 			unsigned reset_counter,
 			bool interruptible,
 			s64 *timeout,
-			struct drm_i915_file_private *file_priv);
+			struct intel_rps_client *rps);
 int __must_check i915_wait_request(struct drm_i915_gem_request *req);
 int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
 int __must_check

drivers/gpu/drm/i915/i915_gem.c

@@ -1221,7 +1221,7 @@ int __i915_wait_request(struct drm_i915_gem_request *req,
 			unsigned reset_counter,
 			bool interruptible,
 			s64 *timeout,
-			struct drm_i915_file_private *file_priv)
+			struct intel_rps_client *rps)
 {
 	struct intel_engine_cs *ring = i915_gem_request_get_ring(req);
 	struct drm_device *dev = ring->dev;
@@ -1244,8 +1244,8 @@ int __i915_wait_request(struct drm_i915_gem_request *req,
 	timeout_expire = timeout ?
 		jiffies + nsecs_to_jiffies_timeout((u64)*timeout) : 0;
 
-	if (INTEL_INFO(dev)->gen >= 6)
-		gen6_rps_boost(dev_priv, file_priv);
+	if (INTEL_INFO(dev_priv)->gen >= 6)
+		gen6_rps_boost(dev_priv, rps);
 
 	/* Record current time in case interrupted by signal, or wedged */
 	trace_i915_gem_request_wait_begin(req);
@@ -1493,7 +1493,7 @@ i915_gem_object_retire_request(struct drm_i915_gem_object *obj,
  */
 static __must_check int
 i915_gem_object_wait_rendering__nonblocking(struct drm_i915_gem_object *obj,
-					    struct drm_i915_file_private *file_priv,
+					    struct intel_rps_client *rps,
 					    bool readonly)
 {
 	struct drm_device *dev = obj->base.dev;
@@ -1545,7 +1545,7 @@ i915_gem_object_wait_rendering__nonblocking(struct drm_i915_gem_object *obj,
 	mutex_unlock(&dev->struct_mutex);
 	for (i = 0; ret == 0 && i < n; i++)
 		ret = __i915_wait_request(requests[i], reset_counter, true,
-					  NULL, file_priv);
+					  NULL, rps);
 	mutex_lock(&dev->struct_mutex);
 
 err:
@@ -1558,6 +1558,12 @@ i915_gem_object_wait_rendering__nonblocking(struct drm_i915_gem_object *obj,
 	return ret;
 }
 
+static struct intel_rps_client *to_rps_client(struct drm_file *file)
+{
+	struct drm_i915_file_private *fpriv = file->driver_priv;
+	return &fpriv->rps;
+}
+
 /**
  * Called when user space prepares to use an object with the CPU, either
  * through the mmap ioctl's mapping or a GTT mapping.
@@ -1600,7 +1606,7 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 	 * to catch cases where we are gazumped.
 	 */
 	ret = i915_gem_object_wait_rendering__nonblocking(obj,
-							  file->driver_priv,
+							  to_rps_client(file),
 							  !write_domain);
 	if (ret)
 		goto unref;
@@ -5216,9 +5222,9 @@ void i915_gem_release(struct drm_device *dev, struct drm_file *file)
 	}
 	spin_unlock(&file_priv->mm.lock);
 
-	if (!list_empty(&file_priv->rps_boost)) {
+	if (!list_empty(&file_priv->rps.link)) {
 		mutex_lock(&to_i915(dev)->rps.hw_lock);
-		list_del(&file_priv->rps_boost);
+		list_del(&file_priv->rps.link);
 		mutex_unlock(&to_i915(dev)->rps.hw_lock);
 	}
 }
@@ -5237,7 +5243,7 @@ int i915_gem_open(struct drm_device *dev, struct drm_file *file)
 	file->driver_priv = file_priv;
 	file_priv->dev_priv = dev->dev_private;
 	file_priv->file = file;
-	INIT_LIST_HEAD(&file_priv->rps_boost);
+	INIT_LIST_HEAD(&file_priv->rps.link);
 
 	spin_lock_init(&file_priv->mm.lock);
 	INIT_LIST_HEAD(&file_priv->mm.request_list);

drivers/gpu/drm/i915/intel_drv.h

@@ -1365,7 +1365,7 @@ void gen6_rps_busy(struct drm_i915_private *dev_priv);
 void gen6_rps_reset_ei(struct drm_i915_private *dev_priv);
 void gen6_rps_idle(struct drm_i915_private *dev_priv);
 void gen6_rps_boost(struct drm_i915_private *dev_priv,
-		    struct drm_i915_file_private *file_priv);
+		    struct intel_rps_client *rps);
 void intel_queue_rps_boost_for_request(struct drm_device *dev,
 				       struct drm_i915_gem_request *req);
 void ilk_wm_get_hw_state(struct drm_device *dev);

drivers/gpu/drm/i915/intel_pm.c

@@ -4150,7 +4150,7 @@ void gen6_rps_idle(struct drm_i915_private *dev_priv)
 }
 
 void gen6_rps_boost(struct drm_i915_private *dev_priv,
-		    struct drm_i915_file_private *file_priv)
+		    struct intel_rps_client *rps)
 {
 	u32 val;
 
@@ -4159,13 +4159,13 @@ void gen6_rps_boost(struct drm_i915_private *dev_priv,
 	if (dev_priv->rps.enabled &&
 	    dev_priv->mm.busy &&
 	    dev_priv->rps.cur_freq < val &&
-	    (file_priv == NULL || list_empty(&file_priv->rps_boost))) {
+	    (rps == NULL || list_empty(&rps->link))) {
 		intel_set_rps(dev_priv->dev, val);
 		dev_priv->rps.last_adj = 0;
 
-		if (file_priv != NULL) {
-			list_add(&file_priv->rps_boost, &dev_priv->rps.clients);
-			file_priv->rps_boosts++;
+		if (rps != NULL) {
+			list_add(&rps->link, &dev_priv->rps.clients);
+			rps->boosts++;
 		} else
 			dev_priv->rps.boosts++;
 	}
@@ -6884,8 +6884,8 @@ void intel_pm_setup(struct drm_device *dev)
 	INIT_DELAYED_WORK(&dev_priv->rps.delayed_resume_work,
 			  intel_gen6_powersave_work);
 	INIT_LIST_HEAD(&dev_priv->rps.clients);
-	INIT_LIST_HEAD(&dev_priv->rps.semaphores.rps_boost);
-	INIT_LIST_HEAD(&dev_priv->rps.mmioflips.rps_boost);
+	INIT_LIST_HEAD(&dev_priv->rps.semaphores.link);
+	INIT_LIST_HEAD(&dev_priv->rps.mmioflips.link);
 
 	dev_priv->pm.suspended = false;
 }