From owner-svn-src-head@FreeBSD.ORG  Fri Dec  2 19:59:46 2011
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 638D11065670;
	Fri,  2 Dec 2011 19:59:46 +0000 (UTC) (envelope-from jhb@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 53C828FC15;
	Fri,  2 Dec 2011 19:59:46 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.4/8.14.4) with ESMTP id pB2JxkVL006741;
	Fri, 2 Dec 2011 19:59:46 GMT (envelope-from jhb@svn.freebsd.org)
Received: (from jhb@localhost)
	by svn.freebsd.org (8.14.4/8.14.4/Submit) id pB2Jxka6006739;
	Fri, 2 Dec 2011 19:59:46 GMT (envelope-from jhb@svn.freebsd.org)
Message-Id: <201112021959.pB2Jxka6006739@svn.freebsd.org>
From: John Baldwin <jhb@FreeBSD.org>
Date: Fri, 2 Dec 2011 19:59:46 +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: r228207 - head/sys/kern
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: Fri, 02 Dec 2011 19:59:46 -0000

Author: jhb
Date: Fri Dec  2 19:59:46 2011
New Revision: 228207
URL: http://svn.freebsd.org/changeset/base/228207

Log:
  When changing the user priority of a thread, change the real priority
  in addition to the user priority for threads whose current real priority
  is equal to the previous user priority or if the new priority is a
  real-time priority.  This allows priority changes of other threads to
  have an immediate effect.
  
  MFC after:	2 weeks

Modified:
  head/sys/kern/kern_resource.c

Modified: head/sys/kern/kern_resource.c
==============================================================================
--- head/sys/kern/kern_resource.c	Fri Dec  2 19:56:46 2011	(r228206)
+++ head/sys/kern/kern_resource.c	Fri Dec  2 19:59:46 2011	(r228207)
@@ -488,8 +488,9 @@ rtp_to_pri(struct rtprio *rtp, struct th
 	sched_class(td, rtp->type);	/* XXX fix */
 	oldpri = td->td_user_pri;
 	sched_user_prio(td, newpri);
-	if (curthread == td)
-		sched_prio(curthread, td->td_user_pri); /* XXX dubious */
+	if (td->td_user_pri != oldpri && (td == curthread ||
+	    td->td_priority == oldpri || td->td_user_pri >= PRI_MAX_REALTIME))
+		sched_prio(td, td->td_user_pri);
 	if (TD_ON_UPILOCK(td) && oldpri != newpri) {
 		critical_enter();
 		thread_unlock(td);