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-rw-r--r--include/trace/events/page_ref.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/trace/events/page_ref.h b/include/trace/events/page_ref.h
index 81001f8b0db4..5d2ea93956ce 100644
--- a/include/trace/events/page_ref.h
+++ b/include/trace/events/page_ref.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM page_ref