From 5884c1a0988faedb58fe13bf6664e57689d6ddf7 Mon Sep 17 00:00:00 2001
From: "Wojciech A. Koszek" <wkoszek@FreeBSD.org>
Date: Tue, 18 Apr 2006 20:32:42 +0000
Subject: [PATCH] 'owner' is not used without SMP. Fix kernel build for such
 kernel configurations.

Approved by:	jhb
---
 sys/kern/kern_rwlock.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sys/kern/kern_rwlock.c b/sys/kern/kern_rwlock.c
index 71e6b27cd33e..d1b99b788555 100644
--- a/sys/kern/kern_rwlock.c
+++ b/sys/kern/kern_rwlock.c
@@ -135,7 +135,9 @@ _rw_wunlock(struct rwlock *rw, const char *file, int line)
 void
 _rw_rlock(struct rwlock *rw, const char *file, int line)
 {
+#ifdef SMP
 	volatile struct thread *owner;
+#endif
 	uintptr_t x;
 
 	KASSERT(rw_wowner(rw) != curthread,
@@ -388,7 +390,9 @@ _rw_runlock(struct rwlock *rw, const char *file, int line)
 void
 _rw_wlock_hard(struct rwlock *rw, uintptr_t tid, const char *file, int line)
 {
+#ifdef SMP
 	volatile struct thread *owner;
+#endif
 	uintptr_t v;
 
 	if (LOCK_LOG_TEST(&rw->rw_object, 0))