1 files changed, 20 insertions, 10 deletions

diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 30aee5160dc0..0eb4a9126b7c 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -12,19 +12,29 @@ struct perf_header_attr {
         off_t id_offset;
 };
 
+#define HEADER_TRACE_INFO                       1
+
+#define HEADER_FEAT_BITS                        256
+
+typedef typeof(u64[HEADER_FEAT_BITS / 8])       feat_mask_t;
+
 struct perf_header {
-        int frozen;
-        int attrs, size;
+        int                     frozen;
+        int                     attrs, size;
         struct perf_header_attr **attr;
-        s64 attr_offset;
-        u64 data_offset;
-        u64 data_size;
-        u64 event_offset;
-        u64 event_size;
-        u64 trace_info_offset;
-        u64 trace_info_size;
+        s64                     attr_offset;
+        u64                     data_offset;
+        u64                     data_size;
+        u64                     event_offset;
+        u64                     event_size;
+        feat_mask_t             adds_features;
 };
 
+static inline unsigned long *perf_header__adds_mask(struct perf_header *self)
+{
+        return (unsigned long *)(void *)&self->adds_features;
+}
+
 struct perf_header *perf_header__read(int fd);
 void perf_header__write(struct perf_header *self, int fd);
 
@@ -42,7 +52,7 @@ void perf_header_attr__add_id(struct perf_header_attr *self, u64 id);
 u64 perf_header__sample_type(struct perf_header *header);
 struct perf_event_attr *
 perf_header__find_attr(u64 id, struct perf_header *header);
-void perf_header__set_trace_info(void);
+void perf_header__feat_trace_info(struct perf_header *header);
 
 struct perf_header *perf_header__new(void);