From owner-svn-src-projects@FreeBSD.ORG  Wed Dec 12 12:14:06 2012
Return-Path: <owner-svn-src-projects@FreeBSD.ORG>
Delivered-To: svn-src-projects@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
 by hub.freebsd.org (Postfix) with ESMTP id 90EF7D17;
 Wed, 12 Dec 2012 12:14:06 +0000 (UTC)
 (envelope-from davide@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org
 [IPv6:2001:1900:2254:2068::e6a:0])
 by mx1.freebsd.org (Postfix) with ESMTP id 752678FC0A;
 Wed, 12 Dec 2012 12:14:06 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
 by svn.freebsd.org (8.14.5/8.14.5) with ESMTP id qBCCE6l9042620;
 Wed, 12 Dec 2012 12:14:06 GMT (envelope-from davide@svn.freebsd.org)
Received: (from davide@localhost)
 by svn.freebsd.org (8.14.5/8.14.5/Submit) id qBCCE6iA042618;
 Wed, 12 Dec 2012 12:14:06 GMT (envelope-from davide@svn.freebsd.org)
Message-Id: <201212121214.qBCCE6iA042618@svn.freebsd.org>
From: Davide Italiano <davide@FreeBSD.org>
Date: Wed, 12 Dec 2012 12:14:06 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-projects@freebsd.org
Subject: svn commit: r244148 - projects/calloutng/sys/kern
X-SVN-Group: projects
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-projects@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: "SVN commit messages for the src &quot; projects&quot;
 tree" <svn-src-projects.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-projects>, 
 <mailto:svn-src-projects-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-projects>
List-Post: <mailto:svn-src-projects@freebsd.org>
List-Help: <mailto:svn-src-projects-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-projects>, 
 <mailto:svn-src-projects-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 12 Dec 2012 12:14:06 -0000

Author: davide
Date: Wed Dec 12 12:14:05 2012
New Revision: 244148
URL: http://svnweb.freebsd.org/changeset/base/244148

Log:
  FREQ2BT is an heavy 64-bit division. There's no need to compute that
  everytime we enter in callout_reset_on(), in particular if the input is
  a costant and precalculated value.

Modified:
  projects/calloutng/sys/kern/kern_timeout.c

Modified: projects/calloutng/sys/kern/kern_timeout.c
==============================================================================
--- projects/calloutng/sys/kern/kern_timeout.c	Wed Dec 12 12:02:58 2012	(r244147)
+++ projects/calloutng/sys/kern/kern_timeout.c	Wed Dec 12 12:14:05 2012	(r244148)
@@ -933,8 +933,7 @@ _callout_reset_on(struct callout *c, str
 
 	cancelled = 0;
 	if (bt == NULL) {
-		FREQ2BT(hz, &to_bt);
-		pr = to_bt;
+		pr = to_bt = tick_bt;
 		getbinuptime(&now);
 		if (to_ticks > 0)
 			bintime_mul(&to_bt, to_ticks);