1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 441992a9775c..f34dab9b275e 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -671,6 +671,7 @@ struct perf_event {
         enum perf_event_active_state    state;
         unsigned int                    attach_state;
         atomic64_t                      count;
+        atomic64_t                      child_count;
 
         /*
          * These are the total time in nanoseconds that the event