Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268907AbUI2T7h (ORCPT ); Wed, 29 Sep 2004 15:59:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268919AbUI2T7g (ORCPT ); Wed, 29 Sep 2004 15:59:36 -0400 Received: from c7ns3.center7.com ([216.250.142.14]:20205 "EHLO smtp.slc03.viawest.net") by vger.kernel.org with ESMTP id S268907AbUI2T73 (ORCPT ); Wed, 29 Sep 2004 15:59:29 -0400 Message-ID: <415B0BFA.6050203@drdos.com> Date: Wed, 29 Sep 2004 13:24:42 -0600 From: "Jeff V. Merkey" User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040510 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Christoph Hellwig Cc: Alan Cox , Robert Love , Ankit Jain , Linux Kernel Mailing List Subject: Re: processor affinity References: <20040928122517.9741.qmail@web52907.mail.yahoo.com> <41596F7F.1000905@drdos.com> <1096387088.4911.4.camel@betsy.boston.ximian.com> <41598B23.50702@drdos.com> <1096408318.13983.47.camel@localhost.localdomain> <415AE953.3070105@drdos.com> <20040929184510.A15692@infradead.org> In-Reply-To: <20040929184510.A15692@infradead.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1387 Lines: 38 Christoph Hellwig wrote: >On Wed, Sep 29, 2004 at 10:56:51AM -0600, Jeff V. Merkey wrote: > > >>Using them for Intel Cache affinity was new at the time. Intel SMP >>hardware was not readily available at the time and was in >>its infancy in 1993 when this was developed. This implementation (like >>Linux) was specific to IA32 architecture systems. >> >> > >The Linux implementation works on about a dozen plattforms, or how >many smp ports we have these days.. > > > > In it's early beginnings, Linux was IA32 based. A pretty cool idea at the time. The patent took ten years to issue due to all the prior art claims. I remember Novell's lawyers bringing me reams of prior art to review during the initial work to verify there was no prior art in the field. Apparently, this was for first affinity patent on SMP architecture systems filed, or it would not have issued. Anyway, I provided it as a reference since it is the first patent on SMP affinity scheduling and methods for the very interested person who asked. And yes, Linux appears to infringe it, but since Novell is pro-Linux, I don't think it matters. :-) Jeff - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/