From owner-p4-projects@FreeBSD.ORG  Wed Nov  4 12:11:01 2009
Return-Path: <owner-p4-projects@FreeBSD.ORG>
Delivered-To: p4-projects@freebsd.org
Received: by hub.freebsd.org (Postfix, from userid 32767)
	id A742C10656A3; Wed,  4 Nov 2009 12:11:01 +0000 (UTC)
Delivered-To: perforce@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 6B5A41065697
	for <perforce@freebsd.org>; Wed,  4 Nov 2009 12:11:01 +0000 (UTC)
	(envelope-from mav@freebsd.org)
Received: from repoman.freebsd.org (repoman.freebsd.org
	[IPv6:2001:4f8:fff6::29])
	by mx1.freebsd.org (Postfix) with ESMTP id 58B0C8FC21
	for <perforce@freebsd.org>; Wed,  4 Nov 2009 12:11:01 +0000 (UTC)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.14.3/8.14.3) with ESMTP id nA4CB19L016460
	for <perforce@freebsd.org>; Wed, 4 Nov 2009 12:11:01 GMT
	(envelope-from mav@freebsd.org)
Received: (from perforce@localhost)
	by repoman.freebsd.org (8.14.3/8.14.3/Submit) id nA4CB1HT016458
	for perforce@freebsd.org; Wed, 4 Nov 2009 12:11:01 GMT
	(envelope-from mav@freebsd.org)
Date: Wed, 4 Nov 2009 12:11:01 GMT
Message-Id: <200911041211.nA4CB1HT016458@repoman.freebsd.org>
X-Authentication-Warning: repoman.freebsd.org: perforce set sender to
	mav@freebsd.org using -f
From: Alexander Motin <mav@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
Precedence: bulk
Cc: 
Subject: PERFORCE change 170157 for review
X-BeenThere: p4-projects@freebsd.org
X-Mailman-Version: 2.1.5
List-Id: p4 projects tree changes <p4-projects.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/p4-projects>,
	<mailto:p4-projects-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/p4-projects>
List-Post: <mailto:p4-projects@freebsd.org>
List-Help: <mailto:p4-projects-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/p4-projects>,
	<mailto:p4-projects-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 04 Nov 2009 12:11:02 -0000

http://p4web.freebsd.org/chv.cgi?CH=170157

Change 170157 by mav@mav_mavtest on 2009/11/04 12:10:45

	If several controllers complete requests same time, call swi_sched()
	only once.

Affected files ...

.. //depot/projects/scottl-camlock/src/sys/cam/cam_xpt.c#120 edit

Differences ...

==== //depot/projects/scottl-camlock/src/sys/cam/cam_xpt.c#120 (text+ko) ====

@@ -4238,6 +4238,7 @@
 xpt_done(union ccb *done_ccb)
 {
 	struct cam_sim *sim;
+	int	first;
 
 	CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_done\n"));
 	if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) != 0) {
@@ -4251,10 +4252,12 @@
 		done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
 		if ((sim->flags & CAM_SIM_ON_DONEQ) == 0) {
 			mtx_lock(&cam_simq_lock);
+			first = TAILQ_EMPTY(&cam_simq);
 			TAILQ_INSERT_TAIL(&cam_simq, sim, links);
 			mtx_unlock(&cam_simq_lock);
 			sim->flags |= CAM_SIM_ON_DONEQ;
-			swi_sched(cambio_ih, 0);
+			if (first)
+				swi_sched(cambio_ih, 0);
 		}
 	}
 }