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-rw-r--r--sys/include/sys/cdefs.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/include/sys/cdefs.h b/sys/include/sys/cdefs.h
index 9c1a466..fc21750 100644
--- a/sys/include/sys/cdefs.h
+++ b/sys/include/sys/cdefs.h
@@ -33,5 +33,7 @@
#define __ASMV __asm__ __volatile__
#define __always_inline __attribute__((__always_inline__))
#define __packed __attribute__((__packed__))
+#define __likely(exp) __builtin_expect(((exp) != 0), 1)
+#define __unlikely(exp) __builtin_expect(((exp) != 0), 0)
#endif /* !_SYS_CDEFS_H_ */