Index: sys/cam/cam_xpt.h
===================================================================
--- sys/cam/cam_xpt.h
+++ sys/cam/cam_xpt.h
@@ -34,7 +34,6 @@
 
 #ifdef _KERNEL
 #include <sys/cdefs.h>
-#include "opt_printf.h"
 #endif
 
 /* Forward Declarations */
@@ -55,15 +54,6 @@
 
 #ifdef _KERNEL
 
-/* Wild guess based on not wanting to grow the stack too much */
-#define XPT_PRINT_MAXLEN	512
-#ifdef PRINTF_BUFR_SIZE
-#define XPT_PRINT_LEN	PRINTF_BUFR_SIZE
-#else
-#define XPT_PRINT_LEN	128
-#endif
-_Static_assert(XPT_PRINT_LEN <= XPT_PRINT_MAXLEN, "XPT_PRINT_LEN is too large");
-
 /*
  * Definition of an async handler callback block.  These are used to add
  * SIMs and peripherals to the async callback lists.
Index: sys/cam/cam_xpt.c
===================================================================
--- sys/cam/cam_xpt.c
+++ sys/cam/cam_xpt.c
@@ -27,6 +27,8 @@
  * SUCH DAMAGE.
  */
 
+#include "opt_printf.h"
+
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
@@ -72,6 +74,15 @@
 
 #include "opt_cam.h"
 
+/* Wild guess based on not wanting to grow the stack too much */
+#define XPT_PRINT_MAXLEN	512
+#ifdef PRINTF_BUFR_SIZE
+#define XPT_PRINT_LEN	PRINTF_BUFR_SIZE
+#else
+#define XPT_PRINT_LEN	128
+#endif
+_Static_assert(XPT_PRINT_LEN <= XPT_PRINT_MAXLEN, "XPT_PRINT_LEN is too large");
+
 /*
  * This is the maximum number of high powered commands (e.g. start unit)
  * that can be outstanding at a particular time.
Index: sys/conf/config.mk
===================================================================
--- sys/conf/config.mk
+++ sys/conf/config.mk
@@ -27,6 +27,8 @@
 	echo "#define MROUTING 1" > ${.TARGET}
 opt_natm.h:
 	echo "#define NATM 1" > ${.TARGET}
+opt_printf.h:
+	echo "#define PRINTF_BUFR_SIZE 128" > ${.TARGET}
 opt_scsi.h:
 	echo "#define SCSI_DELAY 15000" > ${.TARGET}
 opt_wlan.h:
Index: sys/modules/cam/Makefile
===================================================================
--- sys/modules/cam/Makefile
+++ sys/modules/cam/Makefile
@@ -15,6 +15,7 @@
 SRCS+=	opt_sa.h
 SRCS+=	opt_ses.h
 SRCS+=	opt_ddb.h
+SRCS+=	opt_printf.h
 SRCS+=	device_if.h bus_if.h vnode_if.h
 SRCS+=	cam.c
 SRCS+=	cam_compat.c