diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
new file mode 100644
index 0000000..91e2fe5
--- /dev/null
+++ b/tools/perf/util/event.h
@@ -0,0 +1,54 @@
+#include "../perf.h"
+
+struct ip_event {
+	struct perf_event_header header;
+	u64 ip;
+	u32 pid, tid;
+	unsigned char __more_data[];
+};
+
+struct mmap_event {
+	struct perf_event_header header;
+	u32 pid, tid;
+	u64 start;
+	u64 len;
+	u64 pgoff;
+	char filename[PATH_MAX];
+};
+
+struct comm_event {
+	struct perf_event_header header;
+	u32 pid, tid;
+	char comm[16];
+};
+
+struct fork_event {
+	struct perf_event_header header;
+	u32 pid, ppid;
+	u32 tid, ptid;
+};
+
+struct lost_event {
+	struct perf_event_header header;
+	u64 id;
+	u64 lost;
+};
+
+struct read_event {
+	struct perf_event_header header;
+	u32 pid,tid;
+	u64 value;
+	u64 time_enabled;
+	u64 time_running;
+	u64 id;
+};
+
+typedef union event_union {
+	struct perf_event_header	header;
+	struct ip_event			ip;
+	struct mmap_event		mmap;
+	struct comm_event		comm;
+	struct fork_event		fork;
+	struct lost_event		lost;
+	struct read_event		read;
+} event_t;