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-rw-r--r--tools/perf/perf.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index a49842b..ce39419 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>