From 67d0b0ea60a39a3b855c0835475ec848124f75d9 Mon Sep 17 00:00:00 2001
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Tue, 14 Mar 2017 08:45:52 +0000
Subject: [PATCH] Hide kev_iovlen() definition under #ifdef KTRACE, fixing
 build of kernel configs without KTRACE.

Reported by:	rpokala
Sponsored by:	The FreeBSD Foundation
MFC after:	4 days
---
 sys/kern/kern_event.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/kern/kern_event.c b/sys/kern/kern_event.c
index 752caa4b76c5..ffdba2d6ee30 100644
--- a/sys/kern/kern_event.c
+++ b/sys/kern/kern_event.c
@@ -887,6 +887,7 @@ kern_kqueue(struct thread *td, int flags, struct filecaps *fcaps)
 	return (0);
 }
 
+#ifdef KTRACE
 static size_t
 kev_iovlen(int n, u_int kgio)
 {
@@ -895,6 +896,7 @@ kev_iovlen(int n, u_int kgio)
 		return (kgio);
 	return (n * sizeof(struct kevent));
 }
+#endif
 
 #ifndef _SYS_SYSPROTO_H_
 struct kevent_args {