From owner-freebsd-arch@FreeBSD.ORG  Wed May 23 23:34:00 2007
Return-Path: <owner-freebsd-arch@FreeBSD.ORG>
X-Original-To: arch@freebsd.org
Delivered-To: freebsd-arch@FreeBSD.ORG
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id B539616A46C
	for <arch@freebsd.org>; Wed, 23 May 2007 23:34:00 +0000 (UTC)
	(envelope-from jroberson@chesapeake.net)
Received: from webaccess-cl.virtdom.com (webaccess-cl.virtdom.com
	[216.240.101.25])
	by mx1.freebsd.org (Postfix) with ESMTP id 809E413C465
	for <arch@freebsd.org>; Wed, 23 May 2007 23:34:00 +0000 (UTC)
	(envelope-from jroberson@chesapeake.net)
Received: from [192.168.1.101] (c-71-231-138-78.hsd1.or.comcast.net
	[71.231.138.78]) (authenticated bits=0)
	by webaccess-cl.virtdom.com (8.13.6/8.13.6) with ESMTP id
	l4NNXvYB028738
	(version=TLSv1/SSLv3 cipher=DHE-DSS-AES256-SHA bits=256 verify=NO);
	Wed, 23 May 2007 19:33:58 -0400 (EDT)
	(envelope-from jroberson@chesapeake.net)
Date: Wed, 23 May 2007 16:33:50 -0700 (PDT)
From: Jeff Roberson <jroberson@chesapeake.net>
X-X-Sender: jroberson@10.0.0.1
To: Marcel Moolenaar <xcllnt@mac.com>
In-Reply-To: <6A9BD12D-D93C-4AE8-B4F4-D59A0327032D@mac.com>
Message-ID: <20070523163109.X9443@10.0.0.1>
References: <20070520155103.K632@10.0.0.1> <20070523155236.U9443@10.0.0.1>
	<6A9BD12D-D93C-4AE8-B4F4-D59A0327032D@mac.com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
Cc: arch@freebsd.org
Subject: Re: sched_lock && thread_lock()
X-BeenThere: freebsd-arch@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussion related to FreeBSD architecture <freebsd-arch.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arch>
List-Post: <mailto:freebsd-arch@freebsd.org>
List-Help: <mailto:freebsd-arch-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 23 May 2007 23:34:00 -0000

On Wed, 23 May 2007, Marcel Moolenaar wrote:

>
> On May 23, 2007, at 3:56 PM, Jeff Roberson wrote:
>
>> Resuming the original intent of this thread;
>> 
>> http://www.chesapeake.net/~jroberson/threadlock.diff

Woops! people.freebsd.org/~jeff/threadlock.diff

>
> 404 Not Found.
>
> The old patch was missing PowerPC & ia64. Will the final version
> include those as well?

There are a couple of uses of the global scheduler lock in some 
architecture specific locations.  They will continue to be safe with the 
4BSD scheduler.  I intended to work on these issues with the architecture 
maintainers after the threadlock patch goes in.  Can you suggest some 
alternative to sched_lock for pmap_switch in ia64?

There are a couple of these small issues that should be perfectly safe 
that I was hoping to address outside of this patch so that it didn't get 
too big.

Jeff

>
> -- 
> Marcel Moolenaar
> xcllnt@mac.com
>
>