drm/ttm: Avoid using the ttm_mem_type_manager::put_locked function

Release the lru spinlock early.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/ttm/ttm_bo.c

@@ -434,36 +434,25 @@ static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
 }
 
 /**
- * Call bo::reserved and with the lru lock held.
+ * Call bo::reserved.
  * Will release GPU memory type usage on destruction.
- * This is the place to put in driver specific hooks.
- * Will release the bo::reserved lock and the
- * lru lock on exit.
+ * This is the place to put in driver specific hooks to release
+ * driver private resources.
+ * Will release the bo::reserved lock.
  */
 
 static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo)
 {
-	struct ttm_bo_global *glob = bo->glob;
-
 	if (bo->ttm) {
-
-		/**
-		 * Release the lru_lock, since we don't want to have
-		 * an atomic requirement on ttm_tt[unbind|destroy].
-		 */
-
-		spin_unlock(&glob->lru_lock);
 		ttm_tt_unbind(bo->ttm);
 		ttm_tt_destroy(bo->ttm);
 		bo->ttm = NULL;
-		spin_lock(&glob->lru_lock);
 	}
 
-	ttm_bo_mem_put_locked(bo, &bo->mem);
+	ttm_bo_mem_put(bo, &bo->mem);
 
 	atomic_set(&bo->reserved, 0);
 	wake_up_all(&bo->event_queue);
-	spin_unlock(&glob->lru_lock);
 }
 
 
@@ -528,7 +517,7 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool remove_all)
 			list_del_init(&bo->ddestroy);
 			++put_count;
 		}
-
+		spin_unlock(&glob->lru_lock);
 		ttm_bo_cleanup_memtype_use(bo);
 
 		while (put_count--)
@@ -784,15 +773,6 @@ void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem)
 }
 EXPORT_SYMBOL(ttm_bo_mem_put);
 
-void ttm_bo_mem_put_locked(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem)
-{
-	struct ttm_mem_type_manager *man = &bo->bdev->man[mem->mem_type];
-
-	if (mem->mm_node)
-		(*man->func->put_node_locked)(man, mem);
-}
-EXPORT_SYMBOL(ttm_bo_mem_put_locked);
-
 /**
  * Repeatedly evict memory from the LRU for @mem_type until we create enough
  * space, or we've evicted everything and there isn't enough space.

drivers/gpu/drm/ttm/ttm_bo_manager.c

@@ -90,15 +90,6 @@ static void ttm_bo_man_put_node(struct ttm_mem_type_manager *man,
 	}
 }
 
-static void ttm_bo_man_put_node_locked(struct ttm_mem_type_manager *man,
-				       struct ttm_mem_reg *mem)
-{
-	if (mem->mm_node) {
-		drm_mm_put_block(mem->mm_node);
-		mem->mm_node = NULL;
-	}
-}
-
 static int ttm_bo_man_init(struct ttm_mem_type_manager *man,
 			   unsigned long p_size)
 {
@@ -152,7 +143,6 @@ const struct ttm_mem_type_manager_func ttm_bo_manager_func = {
 	ttm_bo_man_takedown,
 	ttm_bo_man_get_node,
 	ttm_bo_man_put_node,
-	ttm_bo_man_put_node_locked,
 	ttm_bo_man_debug
 };
 EXPORT_SYMBOL(ttm_bo_manager_func);

include/drm/ttm/ttm_bo_driver.h

@@ -214,8 +214,6 @@ struct ttm_mem_type_manager_func {
 			 struct ttm_mem_reg *mem);
 	void (*put_node)(struct ttm_mem_type_manager *man,
 			 struct ttm_mem_reg *mem);
-	void (*put_node_locked)(struct ttm_mem_type_manager *man,
-				struct ttm_mem_reg *mem);
 	void (*debug)(struct ttm_mem_type_manager *man, const char *prefix);
 };