diff --git a/sys/sys/_lock.h b/sys/sys/_lock.h
index 9841f45d565..cc035df54ba 100644
--- a/sys/sys/_lock.h
+++ b/sys/sys/_lock.h
@@ -31,22 +31,6 @@
 #ifndef _SYS_LOCK_TYPES_H_
 #define	_SYS_LOCK_TYPES_H_
 
-#ifdef _KERNEL
-/*
- * If any of WITNESS, INVARIANTS, or KTR_LOCK KTR tracing has been enabled,
- * then turn on LOCK_DEBUG.  When this option is on, extra debugging
- * facilities such as tracking the file and line number of lock operations
- * are enabled.  Also, mutex locking operations are not inlined to avoid
- * bloat from all the extra debugging code.  We also have to turn on all the
- * calling conventions for this debugging code in modules so that modules can
- * work with both debug and non-debug kernels.
- */
-#if defined(KLD_MODULE) || defined(WITNESS) || defined(INVARIANTS) || defined(INVARIANT_SUPPORT) || (defined(KTR) && (KTR_COMPILE & KTR_LOCK))
-#define	LOCK_DEBUG
-#endif
-
-#endif /* _KERNEL */
-
 struct lock_object {
 	struct	lock_class *lo_class;
 	const	char *lo_name;
diff --git a/sys/sys/lock.h b/sys/sys/lock.h
index 51fcac3570e..04b49fac021 100644
--- a/sys/sys/lock.h
+++ b/sys/sys/lock.h
@@ -123,11 +123,26 @@ struct lock_list_entry {
 	u_int	ll_count;
 };
 
+/*
+ * If any of WITNESS, INVARIANTS, or KTR_LOCK KTR tracing has been enabled,
+ * then turn on LOCK_DEBUG.  When this option is on, extra debugging
+ * facilities such as tracking the file and line number of lock operations
+ * are enabled.  Also, mutex locking operations are not inlined to avoid
+ * bloat from all the extra debugging code.  We also have to turn on all the
+ * calling conventions for this debugging code in modules so that modules can
+ * work with both debug and non-debug kernels.
+ */
+#if defined(KLD_MODULE) || defined(WITNESS) || defined(INVARIANTS) || defined(INVARIANT_SUPPORT) || defined(KTR)
+#define	LOCK_DEBUG	1
+#else
+#define	LOCK_DEBUG	0
+#endif
+
 /*
  * In the LOCK_DEBUG case, use the filename and line numbers for debugging
  * operations.  Otherwise, use default values to avoid the unneeded bloat.
  */
-#ifdef LOCK_DEBUG
+#if LOCK_DEBUG > 0
 #define	LOCK_FILE	__FILE__
 #define	LOCK_LINE	__LINE__
 #else
diff --git a/sys/sys/mutex.h b/sys/sys/mutex.h
index 3965d97c377..d4c5c37606f 100644
--- a/sys/sys/mutex.h
+++ b/sys/sys/mutex.h
@@ -34,11 +34,6 @@
 
 #ifndef LOCORE
 #include <sys/queue.h>
-
-#ifdef _KERNEL
-#include <sys/ktr.h>
-#endif	/* _KERNEL_ */
-
 #include <sys/_lock.h>
 #include <sys/_mutex.h>
 
@@ -242,7 +237,10 @@ void	_mtx_assert(struct mtx *m, int what, const char *file, int line);
 #define mtx_unlock(m)		mtx_unlock_flags((m), 0)
 #define mtx_unlock_spin(m)	mtx_unlock_spin_flags((m), 0)
 
-#ifdef LOCK_DEBUG
+#ifndef LOCK_DEBUG
+#error LOCK_DEBUG not defined, include <sys/lock.h> before <sys/mutex.h>
+#endif
+#if LOCK_DEBUG > 0
 #define	mtx_lock_flags(m, opts)						\
 	_mtx_lock_flags((m), (opts), LOCK_FILE, LOCK_LINE)
 #define	mtx_unlock_flags(m, opts)					\