--- cci/sys/h/prf.h	2019/07/28 12:24:19	1.1
+++ cci/sys/h/prf.h	2019/07/28 12:29:46	1.1.1.2
@@ -7,3 +7,8 @@
 #define	CONSOLE	1	/* non-urgent messages to console */
 #define	USERTTY	2	/* current process' tty */
 #define	MSGBUF	3	/* only to message buffer, not printed */
+
+#ifdef KPRF
+#define KPRF_TRACE  4	/* sending trace messages to user process */
+#define KPRF_TRACEC 5	/* sending trace messages to user process & console */
+#endif KPRF