1 files changed, 1 insertions, 0 deletions
diff --git a/trace/control.h b/trace/control.h
index cccd2a295e..3f30a0c2b7 100644
--- a/trace/control.h
+++ b/trace/control.h
@@ -15,6 +15,7 @@
 
 typedef struct TraceEventIter {
     size_t event;
+    size_t group;
     const char *pattern;
 } TraceEventIter;