diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 3de3acb..19439c7 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -858,4 +858,6 @@
 				      unsigned long riovcnt,
 				      unsigned long flags);
 
+asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type,
+			 unsigned long idx1, unsigned long idx2);
 #endif