[src/trunk]: src/share/man/man4 Update for 'show kernhist' change. (go wiz!)

[skrll <skrll%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/007d0ac419d5
branches:  trunk
changeset: 344708:007d0ac419d5
user:      skrll <skrll%NetBSD.org@localhost>
date:      Tue Apr 12 11:34:24 2016 +0000

description:
Update for 'show kernhist' change. (go wiz!)

diffstat:

 share/man/man4/ddb.4 |  11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diffs (35 lines):

diff -r f7863f28e4e3 -r 007d0ac419d5 share/man/man4/ddb.4
--- a/share/man/man4/ddb.4      Tue Apr 12 11:15:46 2016 +0000
+++ b/share/man/man4/ddb.4      Tue Apr 12 11:34:24 2016 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: ddb.4,v 1.158 2015/11/13 09:51:16 wiz Exp $
+.\"    $NetBSD: ddb.4,v 1.159 2016/04/12 11:34:24 skrll Exp $
 .\"
 .\" Copyright (c) 1997 - 2009 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -56,7 +56,7 @@
 .\" any improvements or extensions that they make and grant Carnegie Mellon
 .\" the rights to redistribute these changes.
 .\"
-.Dd November 13, 2015
+.Dd April 12, 2016
 .Dt DDB 4
 .Os
 .Sh NAME
@@ -741,11 +741,14 @@
 .Sq \&! .
 .It Ic show uvmexp
 Print a selection of UVM counters and statistics.
-.It Ic show kernhist
-Dumps the kernel histories.
+.It Ic show kernhist Oo Ar addr Oc
+Dumps all the kernel histories if no address is specified, or the history
+at the address.
 This command is available only if a kernel is compiled with
 .Cd options KERNHIST
 or
+.Cd options USB_DEBUG (or related options)
+or
 .Cd options UVMHIST .
 .It Ic show vnode Ns Oo Cm /f Oc Ar address
 Print the vnode at