drm/i915: Track pinned objects

Keep a list of pinned objects and display it via debugfs. Now all
objects that exist in the GTT are always tracked on one of the
active, flushing, inactive or pinned lists.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 8 insertions, 10 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index a8ddcd499b3b..151fa43e4417 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1051,7 +1051,6 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 		ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0);
 	}
 
-	
 	/* Maintain LRU order of "inactive" objects */
 	if (ret == 0 && i915_gem_object_is_inactive(obj_priv))
 		list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list);
@@ -1552,7 +1551,7 @@ i915_gem_object_move_to_inactive(struct drm_gem_object *obj)
 
 	i915_verify_inactive(dev, __FILE__, __LINE__);
 	if (obj_priv->pin_count != 0)
-		list_del_init(&obj_priv->list);
+		list_move_tail(&obj_priv->list, &dev_priv->mm.pinned_list);
 	else
 		list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list);
 
@@ -2044,9 +2043,7 @@ i915_gem_object_unbind(struct drm_gem_object *obj)
 		obj_priv->gtt_space = NULL;
 	}
 
-	/* Remove ourselves from the LRU list if present. */
-	if (!list_empty(&obj_priv->list))
-		list_del_init(&obj_priv->list);
+	list_del_init(&obj_priv->list);
 
 	if (i915_gem_object_is_purgeable(obj_priv))
 		i915_gem_object_truncate(obj);
@@ -4030,6 +4027,7 @@ int
 i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment)
 {
 	struct drm_device *dev = obj->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
 	int ret;
 
@@ -4065,9 +4063,9 @@ i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment)
 	if (obj_priv->pin_count == 1) {
 		atomic_inc(&dev->pin_count);
 		atomic_add(obj->size, &dev->pin_memory);
-		if (!obj_priv->active &&
-		    (obj->write_domain & I915_GEM_GPU_DOMAINS) == 0)
-			list_del_init(&obj_priv->list);
+		if (!obj_priv->active)
+			list_move_tail(&obj_priv->list,
+				       &dev_priv->mm.pinned_list);
 	}
 	i915_verify_inactive(dev, __FILE__, __LINE__);
 
@@ -4091,8 +4089,7 @@ i915_gem_object_unpin(struct drm_gem_object *obj)
 	 * the inactive list
 	 */
 	if (obj_priv->pin_count == 0) {
-		if (!obj_priv->active &&
-		    (obj->write_domain & I915_GEM_GPU_DOMAINS) == 0)
+		if (!obj_priv->active)
 			list_move_tail(&obj_priv->list,
 				       &dev_priv->mm.inactive_list);
 		atomic_dec(&dev->pin_count);
@@ -4614,6 +4611,7 @@ i915_gem_load(struct drm_device *dev)
 	INIT_LIST_HEAD(&dev_priv->mm.flushing_list);
 	INIT_LIST_HEAD(&dev_priv->mm.gpu_write_list);
 	INIT_LIST_HEAD(&dev_priv->mm.inactive_list);
+	INIT_LIST_HEAD(&dev_priv->mm.pinned_list);
 	INIT_LIST_HEAD(&dev_priv->mm.fence_list);
 	INIT_LIST_HEAD(&dev_priv->mm.deferred_free_list);
 	INIT_LIST_HEAD(&dev_priv->render_ring.active_list);