$OpenBSD: patch-src_libstatgrab_swap_stats_c,v 1.2 2014/07/09 11:23:34 sthen Exp $
--- src/libstatgrab/swap_stats.c.orig	Thu Jul  5 10:46:06 2007
+++ src/libstatgrab/swap_stats.c	Wed Jul  9 05:22:32 2014
@@ -49,7 +49,15 @@
 #endif
 #if defined(NETBSD) || defined(OPENBSD)
 #include <sys/param.h>
+#include <sys/sysctl.h>
 #include <sys/time.h>
+
+#if defined(OPENBSD)
+#include <sys/mutex.h>
+/* XXX until uvm gets cleaned up */
+typedef int boolean_t;
+#endif
+
 #include <uvm/uvm.h>
 #include <unistd.h>
 #endif
