From owner-freebsd-current@freebsd.org  Mon Aug  3 19:59:16 2015
Return-Path: <owner-freebsd-current@freebsd.org>
Delivered-To: freebsd-current@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 8BB739B2240
 for <freebsd-current@mailman.ysv.freebsd.org>;
 Mon,  3 Aug 2015 19:59:16 +0000 (UTC)
 (envelope-from eric_badger@dell.com)
Received: from aussmtpmrkps320.us.dell.com (aussmtpmrkps320.us.dell.com
 [143.166.224.254]) (using TLSv1 with cipher RC4-SHA (128/128 bits))
 (Client CN "ausxipmktps31.us.dell.com",
 Issuer "Verizon Public SureServer CA G14-SHA1" (not verified))
 by mx1.freebsd.org (Postfix) with ESMTPS id 2F6931CF0;
 Mon,  3 Aug 2015 19:59:15 +0000 (UTC)
 (envelope-from eric_badger@dell.com)
X-Loopcount0: from 76.164.8.179
X-IronPort-AV: E=Sophos;i="5.15,603,1432616400"; d="scan'208";a="309599958"
Message-ID: <55BFC80B.2000005@dell.com>
Date: Mon, 3 Aug 2015 14:59:07 -0500
From: Eric Badger <eric_badger@dell.com>
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64;
 rv:31.0) Gecko/20100101 Thunderbird/31.7.0
MIME-Version: 1.0
To: FreeBSD Current <freebsd-current@freebsd.org>
CC: <marcel@FreeBSD.org>
Subject: Appending to message buffer while in ddb
Content-Type: text/plain; charset="utf-8"; format=flowed
Content-Transfer-Encoding: 7bit
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
 <freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-current>, 
 <mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current/>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
 <mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 03 Aug 2015 19:59:16 -0000

Hi there,

Since r226435, output from kernel printf/log functions is not appended 
to the message buffer when in ddb. The commit message doesn't call this 
out specifically; instead it appears to have been to address double 
printing to the console while in ddb. I noticed this because a ddb 
script which previously resulted in some things ending up in a 
textdump's msgbuf.txt no longer does so. It may be that the answer is 
"use db_printf in ddb", which is ok, but I thought I'd check anyway to 
see if the aforementioned change was indeed intentional, since I wasn't 
able to dig up any discussion about it.

Thanks,
Eric