From owner-cvs-src-old@FreeBSD.ORG  Fri Feb  6 12:24:38 2009
Return-Path: <owner-cvs-src-old@FreeBSD.ORG>
Delivered-To: cvs-src-old@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 728671065687
	for <cvs-src-old@freebsd.org>; Fri,  6 Feb 2009 12:24:37 +0000 (UTC)
	(envelope-from rwatson@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org
	[IPv6:2001:4f8:fff6::29])
	by mx1.freebsd.org (Postfix) with ESMTP id 6C6C38FC1B
	for <cvs-src-old@freebsd.org>; Fri,  6 Feb 2009 12:24:37 +0000 (UTC)
	(envelope-from rwatson@FreeBSD.org)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.14.3/8.14.3) with ESMTP id n16COb3D040650
	for <cvs-src-old@freebsd.org>; Fri, 6 Feb 2009 12:24:37 GMT
	(envelope-from rwatson@repoman.freebsd.org)
Received: (from svn2cvs@localhost)
	by repoman.freebsd.org (8.14.3/8.14.3/Submit) id n16CObZf040649
	for cvs-src-old@freebsd.org; Fri, 6 Feb 2009 12:24:37 GMT
	(envelope-from rwatson@repoman.freebsd.org)
Message-Id: <200902061224.n16CObZf040649@repoman.freebsd.org>
X-Authentication-Warning: repoman.freebsd.org: svn2cvs set sender to
	rwatson@repoman.freebsd.org using -f
From: Robert Watson <rwatson@FreeBSD.org>
Date: Fri, 6 Feb 2009 12:24:30 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: RELENG_7
Subject: cvs commit: src/sys/security/audit audit_pipe.c
X-BeenThere: cvs-src-old@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: **OBSOLETE** CVS commit messages for the src tree
	<cvs-src-old.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src-old>,
	<mailto:cvs-src-old-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-src-old>
List-Post: <mailto:cvs-src-old@freebsd.org>
List-Help: <mailto:cvs-src-old-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src-old>,
	<mailto:cvs-src-old-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 06 Feb 2009 12:24:39 -0000

rwatson     2009-02-06 12:24:30 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_7)
    sys/security/audit   audit_pipe.c 
  Log:
  SVN rev 188228 on 2009-02-06 12:24:30Z by rwatson
  
  Merge r184488 from head to stable/7:
  
    Break out single audit_pipe_mtx into two types of locks: a global rwlock
    protecting the list of audit pipes, and a per-pipe mutex protecting the
    queue.
  
    Likewise, replace the single global condition variable used to signal
    delivery of a record to one or more pipes, and add a per-pipe condition
    variable to avoid spurious wakeups when event subscriptions differ
    across multiple pipes.
  
    This slightly increases the cost of delivering to audit pipes, but should
    reduce lock contention in the presence of multiple readers as only the
    per-pipe lock is required to read from a pipe, as well as avoid
    overheading when different pipes are used in different ways.
  
    Sponsored by: Apple, Inc.
  
  Revision  Changes    Path
  1.11.2.6  +127 -83   src/sys/security/audit/audit_pipe.c