1 files changed, 2 insertions, 0 deletions

diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
index b8e288a1f740..eeb787b1c53c 100644
--- a/tools/include/uapi/linux/perf_event.h
+++ b/tools/include/uapi/linux/perf_event.h
@@ -143,6 +143,8 @@ enum perf_event_sample_format {
         PERF_SAMPLE_PHYS_ADDR                   = 1U << 19,
 
         PERF_SAMPLE_MAX = 1U << 20,             /* non-ABI */
+
+        __PERF_SAMPLE_CALLCHAIN_EARLY           = 1ULL << 63,
 };
 
 /*