From owner-freebsd-current@FreeBSD.ORG  Tue May 12 11:48:43 2009
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 6346B106566B
	for <freebsd-current@freebsd.org>; Tue, 12 May 2009 11:48:43 +0000 (UTC)
	(envelope-from rea-fbsd@codelabs.ru)
Received: from 0.mx.codelabs.ru (0.mx.codelabs.ru [144.206.177.45])
	by mx1.freebsd.org (Postfix) with ESMTP id 002908FC13
	for <freebsd-current@freebsd.org>; Tue, 12 May 2009 11:48:42 +0000 (UTC)
	(envelope-from rea-fbsd@codelabs.ru)
DomainKey-Signature: a=rsa-sha1; q=dns; c=simple; s=one; d=codelabs.ru;
	h=Received:Date:From:To:Cc:Subject:Message-ID:Reply-To:References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To:Sender;
	b=n7W4bEX3lYiEoaxXwqtMTK/QmNP8gMAlbZdn9V08ZnO1pPG9vW2u/85W/Z4EZ8stptjI41tkLlw44CqBkKYrlnjcQdjwmxxD1a9iWos1zjjYwdRtoaG791hSu/KNdp3ZXA+Ac5hOked2gUc2yONmdaQ5D6nQ8XkHjiQ4lNsUnQU=;
Received: from void.codelabs.ru (void.codelabs.ru [144.206.177.25])
	by 0.mx.codelabs.ru with esmtpsa (TLSv1:AES256-SHA:256)
	id 1M3qTQ-0003cB-Bs; Tue, 12 May 2009 15:48:40 +0400
Date: Tue, 12 May 2009 15:48:38 +0400
From: Eygene Ryabinkin <rea-fbsd@codelabs.ru>
To: "????ccuiyyan@sina.com" <ccuiyyan@gmail.com>
Message-ID: <uPyvXRYUMhTQiPijMfhOl9gAxL8@BDDafoqRaVX0wx5yYhK7e3tDxdk>
References: <4451ccf20905120329x68e86081p90d0098ad5ea5d5b@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <4451ccf20905120329x68e86081p90d0098ad5ea5d5b@mail.gmail.com>
Sender: rea-fbsd@codelabs.ru
Cc: freebsd-current@freebsd.org
Subject: Re: Is there printk() in FreeBSD?
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: rea-fbsd@codelabs.ru
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/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: Tue, 12 May 2009 11:48:43 -0000

Tue, May 12, 2009 at 06:29:35PM +0800, ????ccuiyyan@sina.com wrote:

> A simple question: sometimes i need to print out some kernel
> address in FreeBSD kernel. And i know printk() can be used in
> Linux to print the message to dmesg, Is there some similar in
> FreeBSD?
> 
> It seems that printk() cannot work in the FreeBSD kernel.

Use plain printf().

> And where can we find the output? in dmesg or somewhere else?

In the dmesg and in all (syslogged) destinations you had configured.
-- 
Eygene
 _                ___       _.--.   #
 \`.|\..----...-'`   `-._.-'_.-'`   #  Remember that it is hard
 /  ' `         ,       __.--'      #  to read the on-line manual
 )/' _/     \   `-_,   /            #  while single-stepping the kernel.
 `-'" `"\_  ,_.-;_.-\_ ',  fsc/as   #
     _.-'_./   {_.'   ; /           #    -- FreeBSD Developers handbook
    {_.-``-'         {_/            #