From owner-freebsd-hackers@FreeBSD.ORG  Thu Sep 30 17:17:54 2010
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 437B31065694
	for <freebsd-hackers@FreeBSD.org>; Thu, 30 Sep 2010 17:17:54 +0000 (UTC)
	(envelope-from avg@icyb.net.ua)
Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140])
	by mx1.freebsd.org (Postfix) with ESMTP id 7A3248FC14
	for <freebsd-hackers@FreeBSD.org>; Thu, 30 Sep 2010 17:17:53 +0000 (UTC)
Received: from odyssey.starpoint.kiev.ua (alpha-e.starpoint.kiev.ua
	[212.40.38.101])
	by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id UAA25872
	for <freebsd-hackers@FreeBSD.org>;
	Thu, 30 Sep 2010 20:17:51 +0300 (EEST)
	(envelope-from avg@icyb.net.ua)
Message-ID: <4CA4C63F.4070503@icyb.net.ua>
Date: Thu, 30 Sep 2010 20:17:51 +0300
From: Andriy Gapon <avg@icyb.net.ua>
User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US;
	rv:1.9.2.9) Gecko/20100920 Lightning/1.0b2 Thunderbird/3.1.4
MIME-Version: 1.0
To: freebsd-hackers@FreeBSD.org
X-Enigmail-Version: 1.1.2
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Cc: 
Subject: sysctl for querying kmem_map->size
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 30 Sep 2010 17:17:54 -0000


Here's a patch that adds a sysctl for querying kmem_map->size, which may be useful
for system state/resources monitoring:
http://people.freebsd.org/~avg/sysctl-kmem_map_size.diff

I am quite unsure about sizeof(kmem_map->size) == sizeof(int) hack, but I couldn't
think of other way to decide whether to use SYSCTL_ADD_UINT or SYSCTL_ADD_ULONG
depending on real type behind vm_size_t.

Comments, suggestions?

-- 
Andriy Gapon