ACPICA: Optimization: Reduce the number of namespace walks

On control method exit, only walk the namespace if the method is
known to have created namespace objects outside of its local scope.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/acpica/dsmethod.c

@@ -584,8 +584,22 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
 		 * want make the objects permanent.
 		 */
 		if (!(method_desc->method.flags & AOPOBJ_MODULE_LEVEL)) {
-			acpi_ns_delete_namespace_by_owner(method_desc->method.
-							  owner_id);
+
+			/* Delete any direct children of (created by) this method */
+
+			acpi_ns_delete_namespace_subtree(walk_state->
+							 method_node);
+
+			/*
+			 * Delete any objects that were created by this method
+			 * elsewhere in the namespace (if any were created).
+			 */
+			if (method_desc->method.
+			    flags & AOPOBJ_MODIFIED_NAMESPACE) {
+				acpi_ns_delete_namespace_by_owner(method_desc->
+								  method.
+								  owner_id);
+			}
 		}
 	}