From owner-freebsd-hackers@FreeBSD.ORG  Mon Nov 17 21:21:43 2008
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 7F642106564A
	for <freebsd-hackers@freebsd.org>; Mon, 17 Nov 2008 21:21:43 +0000 (UTC)
	(envelope-from hselasky@c2i.net)
Received: from swip.net (mailfe04.swip.net [212.247.154.97])
	by mx1.freebsd.org (Postfix) with ESMTP id DDD158FC16
	for <freebsd-hackers@freebsd.org>; Mon, 17 Nov 2008 21:21:42 +0000 (UTC)
	(envelope-from hselasky@c2i.net)
X-Cloudmark-Score: 0.000000 []
X-Cloudmark-Analysis: v=1.0 c=1 a=CmCrj1Lm9Q4A:10 a=gBvLJ3r9iE8A:10
	a=aniA1o7mVp4QawOfT9qHqA==:17 a=L_kApNG8BjtEhqcw1QIA:9
	a=_p1DzmURR115e9XFP7501RW2fMIA:4 a=SV7veod9ZcQA:10
	a=LY0hPdMaydYA:10
Received: from [62.113.133.1] (account mc467741@c2i.net [62.113.133.1]
	verified) by mailfe04.swip.net (CommuniGate Pro SMTP 5.2.6)
	with ESMTPA id 1150625421; Mon, 17 Nov 2008 22:21:40 +0100
From: Hans Petter Selasky <hselasky@c2i.net>
To: freebsd-hackers@freebsd.org
Date: Mon, 17 Nov 2008 22:23:49 +0100
User-Agent: KMail/1.9.7
References: <1226934861.6310.25.camel@efe>
	<20081117171250.GA43367@hub.freebsd.org>
	<20081117204802.GZ81783@hoeg.nl>
In-Reply-To: <20081117204802.GZ81783@hoeg.nl>
MIME-Version: 1.0
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Message-Id: <200811172223.51209.hselasky@c2i.net>
Cc: Murat Balaban <murat@enderunix.org>, Ed Schouten <ed@80386.nl>
Subject: Re: Giant lock, bce and uhc using the same irq
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 17 Nov 2008 21:21:43 -0000

On Monday 17 November 2008, Ed Schouten wrote:
> * Kris Kennaway <kris@FreeBSD.org> wrote:
> > P.S. In 8.0 there is a new USB stack that is Giant-free.
>
> I'm not sure this is completely true. Maybe HPS could explain it in more
> detail, but Giant still seems to be used pretty often.

All the interrupt handlers of the Host- and Device-controller drivers are free 
from locking Giant when executing.

--HPS