From owner-freebsd-current@FreeBSD.ORG  Mon Aug  3 17:45:40 2009
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id DD1951065677
	for <freebsd-current@freebsd.org>; Mon,  3 Aug 2009 17:45:40 +0000 (UTC)
	(envelope-from julian@elischer.org)
Received: from outT.internet-mail-service.net (outt.internet-mail-service.net
	[216.240.47.243])
	by mx1.freebsd.org (Postfix) with ESMTP id C3B1F8FC22
	for <freebsd-current@freebsd.org>; Mon,  3 Aug 2009 17:45:40 +0000 (UTC)
	(envelope-from julian@elischer.org)
Received: from idiom.com (mx0.idiom.com [216.240.32.160])
	by out.internet-mail-service.net (Postfix) with ESMTP id 0DEA5A300F;
	Mon,  3 Aug 2009 10:45:48 -0700 (PDT)
X-Client-Authorized: MaGic Cook1e
X-Client-Authorized: MaGic Cook1e
X-Client-Authorized: MaGic Cook1e
Received: from julian-mac.elischer.org (home.elischer.org [216.240.48.38])
	by idiom.com (Postfix) with ESMTP id EA0352D600E;
	Mon,  3 Aug 2009 10:45:39 -0700 (PDT)
Message-ID: <4A77224A.9020706@elischer.org>
Date: Mon, 03 Aug 2009 10:45:46 -0700
From: Julian Elischer <julian@elischer.org>
User-Agent: Thunderbird 2.0.0.22 (Macintosh/20090605)
MIME-Version: 1.0
To: John Baldwin <jhb@freebsd.org>
References: <4A75691E.9070401@elischer.org>
	<200908031305.25714.jhb@freebsd.org>
In-Reply-To: <200908031305.25714.jhb@freebsd.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: freebsd-current@freebsd.org, FreeBSD Current <current@freebsd.org>
Subject: Re: possible readability improvement for i386 pcpu macros:
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 03 Aug 2009 17:45:41 -0000

John Baldwin wrote:
> On Sunday 02 August 2009 6:23:26 am Julian Elischer wrote:
>> if you have to ever look at the output of the cpp then this removes a 
>> number of things you have to puzzle over in the output of PCPU_SET()
>> and friends.
>>
>>
>> I don't know if it applies to the other architectures.
> 
> It probably applies to amd64.  Also, simplifying the amount of code the macros 
> generate can reduce compile time.  That is why Peter added __curthread() so 
> that all the curthread references did not have to compile a fully expanded 
> PCPU_GET() macro each time.  It gave a noticable reduction in kernel compile 
> time.
> 

turns out it is already in amd64..