diff --git a/include/linux/arch_topology.h b/include/linux/arch_topology.h
index 716ce5872..d4fcb0e 100644
--- a/include/linux/arch_topology.h
+++ b/include/linux/arch_topology.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * include/linux/arch_topology.h - arch specific cpu topology information
  */