From 87ad66eea0824af26afde2c15a2d288989c908e5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Vavru=C5=A1a?= <marek.vavrusa@nic.cz>
Date: Tue, 30 Jun 2015 01:08:44 +0200
Subject: [PATCH] lib: helping compiler with early returns

---
 lib/defines.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/defines.h b/lib/defines.h
index 017a14087..9709380c9 100644
--- a/lib/defines.h
+++ b/lib/defines.h
@@ -25,7 +25,10 @@
  * Error codes.
  */
 #define kr_ok() 0
-#define kr_error(x) -abs(x)
+/* Mark as cold to mark all branches as unlikely. */
+static inline int __attribute__((__cold__)) kr_error(int x) {
+	return -abs(x);
+}
 #define kr_strerror(x) strerror(abs(x))
 
 /*