From owner-svn-src-head@FreeBSD.ORG  Tue Jul 13 06:49:35 2010
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id B72111065676;
	Tue, 13 Jul 2010 06:49:35 +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 A68068FC1C;
	Tue, 13 Jul 2010 06:49:35 +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 o6D6nZwn046717;
	Tue, 13 Jul 2010 06:49:35 GMT
	(envelope-from lstewart@svn.freebsd.org)
Received: (from lstewart@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id o6D6nZ5a046715;
	Tue, 13 Jul 2010 06:49:35 GMT
	(envelope-from lstewart@svn.freebsd.org)
Message-Id: <201007130649.o6D6nZ5a046715@svn.freebsd.org>
From: Lawrence Stewart <lstewart@FreeBSD.org>
Date: Tue, 13 Jul 2010 06:49:35 +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: r209978 - head/sys/sys
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
	<svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 13 Jul 2010 06:49:35 -0000

Author: lstewart
Date: Tue Jul 13 06:49:34 2010
New Revision: 209978
URL: http://svn.freebsd.org/changeset/base/209978

Log:
  - Rename DPCPU_SUM to DPCPU_VARSUM to better reflect the fact it operates on
    member variables of a DPCPU struct.
  
  - Add DPCPU_SUM which sums a DPCPU variable.
  
  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 06:42:47 2010	(r209977)
+++ head/sys/sys/pcpu.h	Tue Jul 13 06:49:34 2010	(r209978)
@@ -109,7 +109,19 @@ extern uintptr_t dpcpu_off[];
 /*
  * Utility macros.
  */
-#define	DPCPU_SUM(n, var) __extension__					\
+#define	DPCPU_SUM(n) __extension__					\
+({									\
+	u_int _i;							\
+	__typeof(DPCPU_PTR(n)) sum;					\
+									\
+	sum = 0;							\
+	CPU_FOREACH(_i) {						\
+		sum += DPCPU_ID_PTR(_i, n);				\
+	}								\
+	sum;								\
+})
+
+#define	DPCPU_VARSUM(n, var) __extension__				\
 ({									\
 	u_int _i;							\
 	__typeof((DPCPU_PTR(n))->var) sum;				\