--- zzzz-none-000/linux-3.10.107/arch/s390/include/asm/mutex.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/s390/include/asm/mutex.h	2021-02-04 17:41:59.000000000 +0000
@@ -7,5 +7,3 @@
  */
 
 #include <asm-generic/mutex-dec.h>
-
-#define arch_mutex_cpu_relax()	barrier()