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-rw-r--r--tools/lib/perf/include/perf/event.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/lib/perf/include/perf/event.h b/tools/lib/perf/include/perf/event.h
index e563dd8c3628..ae64090184d3 100644
--- a/tools/lib/perf/include/perf/event.h
+++ b/tools/lib/perf/include/perf/event.h
@@ -148,7 +148,13 @@ struct perf_record_switch {
struct perf_record_header_attr {
struct perf_event_header header;
struct perf_event_attr attr;
- __u64 id[];
+ /*
+ * Array of u64 id follows here but we cannot use a flexible array
+ * because size of attr in the data can be different then current
+ * version. Please use perf_record_header_attr_id() below.
+ *
+ * __u64 id[]; // do not use this
+ */
};
/* Returns the pointer to id array based on the actual attr size. */