diff --git a/[refs] b/[refs]
index 0ab895190418..7cdd157aa6a5 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ad0cf3478de8677f720ee06393b3147819568d6a
+refs/heads/master: c1e028ef40b8d6943b767028ba17d4f2ba020edb
diff --git a/trunk/tools/perf/perf.h b/trunk/tools/perf/perf.h
index ef7aa0a0c526..95aaf565c704 100644
--- a/trunk/tools/perf/perf.h
+++ b/trunk/tools/perf/perf.h
@@ -73,6 +73,18 @@ void get_term_dimensions(struct winsize *ws);
 #define cpu_relax()	asm volatile("":::"memory")
 #endif
 
+#ifdef __mips__
+#include "../../arch/mips/include/asm/unistd.h"
+#define rmb()		asm volatile(					\
+				".set	mips2\n\t"			\
+				"sync\n\t"				\
+				".set	mips0"				\
+				: /* no output */			\
+				: /* no input */			\
+				: "memory")
+#define cpu_relax()	asm volatile("" ::: "memory")
+#endif
+
 #include <time.h>
 #include <unistd.h>
 #include <sys/types.h>