--- perf.h.orig	2010-05-17 19:22:32.000000000 +0300
+++ perf.h	2010-08-01 15:47:47.000000000 +0300
@@ -73,6 +73,7 @@
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/syscall.h>
+#include <stdbool.h>
 
 #include "../../include/linux/perf_event.h"
 #include "util/types.h"