From owner-svn-src-all@FreeBSD.ORG  Tue Jul 13 08:05:48 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 862F81065674;
	Tue, 13 Jul 2010 08:05:48 +0000 (UTC)
	(envelope-from lstewart@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 7259B8FC1B;
	Tue, 13 Jul 2010 08:05:48 +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 o6D85mtP063767;
	Tue, 13 Jul 2010 08:05:48 GMT
	(envelope-from lstewart@svn.freebsd.org)
Received: (from lstewart@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id o6D85mDN063765;
	Tue, 13 Jul 2010 08:05:48 GMT
	(envelope-from lstewart@svn.freebsd.org)
Message-Id: <201007130805.o6D85mDN063765@svn.freebsd.org>
From: Lawrence Stewart <lstewart@FreeBSD.org>
Date: Tue, 13 Jul 2010 08:05:48 +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: r209981 - head/sys/sys
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: Tue, 13 Jul 2010 08:05:48 -0000

Author: lstewart
Date: Tue Jul 13 08:05:48 2010
New Revision: 209981
URL: http://svn.freebsd.org/changeset/base/209981

Log:
  Macro to simplify zeroing DPCPU variables.
  
  Sponsored by:	FreeBSD Foundation
  MFC after:	3 days

Modified:
  head/sys/sys/pcpu.h

Modified: head/sys/sys/pcpu.h
==============================================================================
--- head/sys/sys/pcpu.h	Tue Jul 13 07:00:57 2010	(r209980)
+++ head/sys/sys/pcpu.h	Tue Jul 13 08:05:48 2010	(r209981)
@@ -133,6 +133,15 @@ extern uintptr_t dpcpu_off[];
 	sum;								\
 })
 
+#define	DPCPU_ZERO(n) do {						\
+	u_int _i;							\
+									\
+	CPU_FOREACH(_i) {						\
+		bzero(DPCPU_ID_PTR(_i, n),				\
+		    sizeof(__typeof(DPCPU_PTR(n))));			\
+	}								\
+} while(0)
+
 /* 
  * XXXUPS remove as soon as we have per cpu variable
  * linker sets and can define rm_queue in _rm_lock.h