1 files changed, 7 insertions, 1 deletions

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 4a1a54265b04..4869050e7194 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -238,6 +238,7 @@ static struct perf_event_header finished_round_event = {
 
 static int record__mmap_read_all(struct record *rec)
 {
+        u64 bytes_written = rec->bytes_written;
         int i;
         int rc = 0;
 
@@ -250,7 +251,12 @@ static int record__mmap_read_all(struct record *rec)
                 }
         }
 
-        rc = record__write(rec, &finished_round_event, sizeof(finished_round_event));
+        /*
+         * Mark the round finished in case we wrote
+         * at least one event.
+         */
+        if (bytes_written != rec->bytes_written)
+                rc = record__write(rec, &finished_round_event, sizeof(finished_round_event));
 
 out:
         return rc;