# define MEMBARRIER_EXPEDITED (1 << 0)
# define MEMBARRIER_DELAYED (1 << 1)
# define MEMBARRIER_QUERY (1 << 16)
-# define membarrier(...) syscall(__NR_membarrier, __VA_ARGS__)
+# define membarrier(...) syscall(SYS_membarrier, __VA_ARGS__)
#else
# undef RCU_MEMBARRIER
# define RCU_MB