diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c
index 24a77c34e9ad..c2b41a263166 100644
--- a/kernel/events/callchain.c
+++ b/kernel/events/callchain.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Performance events callchain code, extracted from core.c:
  *
@@ -5,8 +6,6 @@
  *  Copyright (C) 2008-2011 Red Hat, Inc., Ingo Molnar
  *  Copyright (C) 2008-2011 Red Hat, Inc., Peter Zijlstra
  *  Copyright  ©  2009 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com>
- *
- * For licensing details see kernel-base/COPYING
  */
 
 #include <linux/perf_event.h>
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 280a72b3a553..5b89de7918d0 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Performance events core code:
  *
@@ -5,8 +6,6 @@
  *  Copyright (C) 2008-2011 Red Hat, Inc., Ingo Molnar
  *  Copyright (C) 2008-2011 Red Hat, Inc., Peter Zijlstra
  *  Copyright  ©  2009 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com>
- *
- * For licensing details see kernel-base/COPYING
  */
 
 #include <linux/fs.h>
diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
index 309ef5a64af5..ed6409300ef5 100644
--- a/kernel/events/ring_buffer.c
+++ b/kernel/events/ring_buffer.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Performance events ring-buffer code:
  *
@@ -5,8 +6,6 @@
  *  Copyright (C) 2008-2011 Red Hat, Inc., Ingo Molnar
  *  Copyright (C) 2008-2011 Red Hat, Inc., Peter Zijlstra
  *  Copyright  ©  2009 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com>
- *
- * For licensing details see kernel-base/COPYING
  */
 
 #include <linux/perf_event.h>