1 files changed, 6 insertions, 0 deletions

diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index a49842b69a59..ce394192c85a 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -13,6 +13,12 @@
 #define cpu_relax()     asm volatile ("" ::: "memory");
 #endif
 
+#ifdef __s390__
+#include "../../arch/s390/include/asm/unistd.h"
+#define rmb()           asm volatile("bcr 15,0" ::: "memory")
+#define cpu_relax()     asm volatile("" ::: "memory");
+#endif
+
 #include <time.h>
 #include <unistd.h>
 #include <sys/types.h>