From owner-svn-src-all@FreeBSD.ORG  Thu Oct  7 18:11:33 2010
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id AAA2A106564A;
	Thu,  7 Oct 2010 18:11:33 +0000 (UTC) (envelope-from avg@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 9931D8FC16;
	Thu,  7 Oct 2010 18:11:33 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id o97IBXGt048987;
	Thu, 7 Oct 2010 18:11:33 GMT (envelope-from avg@svn.freebsd.org)
Received: (from avg@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id o97IBXOO048985;
	Thu, 7 Oct 2010 18:11:33 GMT (envelope-from avg@svn.freebsd.org)
Message-Id: <201010071811.o97IBXOO048985@svn.freebsd.org>
From: Andriy Gapon <avg@FreeBSD.org>
Date: Thu, 7 Oct 2010 18:11:33 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
	svn-src-head@freebsd.org
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r213527 - head/sys/kern
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
	user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
	<mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
	<mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 07 Oct 2010 18:11:33 -0000

Author: avg
Date: Thu Oct  7 18:11:33 2010
New Revision: 213527
URL: http://svn.freebsd.org/changeset/base/213527

Log:
  vm.kmem_map_size: a sysctl to query current kmem_map->size
  
  Based on a patch from Sandvine Incorporated via emaste.
  
  Reviewed by:	emaste
  MFC after:	1 week

Modified:
  head/sys/kern/kern_malloc.c

Modified: head/sys/kern/kern_malloc.c
==============================================================================
--- head/sys/kern/kern_malloc.c	Thu Oct  7 18:00:55 2010	(r213526)
+++ head/sys/kern/kern_malloc.c	Thu Oct  7 18:11:33 2010	(r213527)
@@ -202,6 +202,11 @@ static u_int vm_kmem_size_scale;
 SYSCTL_UINT(_vm, OID_AUTO, kmem_size_scale, CTLFLAG_RDTUN, &vm_kmem_size_scale, 0,
     "Scale factor for kernel memory size");
 
+static int sysctl_kmem_map_size(SYSCTL_HANDLER_ARGS);
+SYSCTL_PROC(_vm, OID_AUTO, kmem_map_size,
+    CTLFLAG_RD | CTLTYPE_ULONG | CTLFLAG_MPSAFE, NULL, 0,
+    sysctl_kmem_map_size, "LU", "Current kmem_map allocation size");
+
 /*
  * The malloc_mtx protects the kmemstatistics linked list.
  */
@@ -240,6 +245,15 @@ SYSCTL_INT(_debug_malloc, OID_AUTO, fail
     &malloc_failure_count, 0, "Number of imposed M_NOWAIT malloc failures");
 #endif
 
+static int
+sysctl_kmem_map_size(SYSCTL_HANDLER_ARGS)
+{
+	u_long size;
+
+	size = kmem_map->size;
+	return (sysctl_handle_long(oidp, &size, 0, req));
+}
+
 /*
  * malloc(9) uma zone separation -- sub-page buffer overruns in one
  * malloc type will affect only a subset of other malloc types.