From 5e8feb5beddda3cfd896079a0374085d494a3a7c Mon Sep 17 00:00:00 2001
From: Jeff Roberson <jeff@FreeBSD.org>
Date: Sun, 16 Feb 2003 10:39:49 +0000
Subject: [PATCH]  - Add a WITNESS_SLEEP() for the appropriate cases in
 lockmgr().

---
 sys/kern/kern_lock.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sys/kern/kern_lock.c b/sys/kern/kern_lock.c
index 9d2013fa0469..aaf09aa89622 100644
--- a/sys/kern/kern_lock.c
+++ b/sys/kern/kern_lock.c
@@ -232,6 +232,13 @@ debuglockmgr(lkp, flags, interlkp, td, name, file, line)
 	else
 		thr = td;
 
+	if ((flags & (LK_NOWAIT|LK_RELEASE)) == 0) {
+		if ((flags & LK_INTERLOCK) == 0)
+			WITNESS_SLEEP(1, NULL);
+		else
+			WITNESS_SLEEP(1, &interlkp->mtx_object);
+	}
+
 	mtx_lock(lkp->lk_interlock);
 	if (flags & LK_INTERLOCK) {
 		mtx_assert(interlkp, MA_OWNED | MA_NOTRECURSED);