--- src/sys/sys/selinfo.h	2007/01/04 21:47:03	1.2
+++ src/sys/sys/selinfo.h	2007/02/18 16:13:27	1.3
@@ -50,6 +50,7 @@
  */
 struct selinfo {
 	pid_t	si_pid;			/* process to be notified */
+	lwpid_t	si_tid;			/* lwp within this process */
 	struct	klist si_note;		/* kernel note list */
 	struct	notifymsglist si_mlist;	/* list of pending predicate messages */
 	short	si_flags;		/* see below */