#define atomic_add(b,a) do {(a)->counter += b;} while (0)
#define atomic_sub(b,a) do {(a)->counter -= b;} while (0)
+#ifndef likely
#define likely(exp) (exp)
+#endif
+#ifndef unlikely
#define unlikely(exp) (exp)
+#endif
/* log related */
static inline int llog_init_commit_master(void) { return 0; }