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-rw-r--r--tools/perf/pmu-events/jevents.h1
-rw-r--r--tools/perf/pmu-events/jsmn.h1
-rw-r--r--tools/perf/pmu-events/json.h1
-rw-r--r--tools/perf/pmu-events/pmu-events.h1
4 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/pmu-events/jevents.h b/tools/perf/pmu-events/jevents.h
index 611fac01913d..d87efd2685b8 100644
--- a/tools/perf/pmu-events/jevents.h
+++ b/tools/perf/pmu-events/jevents.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef JEVENTS_H
#define JEVENTS_H 1
diff --git a/tools/perf/pmu-events/jsmn.h b/tools/perf/pmu-events/jsmn.h
index d666b10cf25b..c7b0f6ea2a31 100644
--- a/tools/perf/pmu-events/jsmn.h
+++ b/tools/perf/pmu-events/jsmn.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __JSMN_H_
#define __JSMN_H_
diff --git a/tools/perf/pmu-events/json.h b/tools/perf/pmu-events/json.h
index 278ebd32cfb6..fbcd5a0590ad 100644
--- a/tools/perf/pmu-events/json.h
+++ b/tools/perf/pmu-events/json.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef JSON_H
#define JSON_H 1
diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
index 569eab3688dd..e08789ddfe6c 100644
--- a/tools/perf/pmu-events/pmu-events.h
+++ b/tools/perf/pmu-events/pmu-events.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef PMU_EVENTS_H
#define PMU_EVENTS_H