From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 6 Jun 2002 12:57:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 6 Jun 2002 12:57:19 -0400 Received: from dsl-213-023-038-060.arcor-ip.net ([213.23.38.60]:38092 "EHLO starship") by vger.kernel.org with ESMTP id ; Thu, 6 Jun 2002 12:57:17 -0400 Content-Type: text/plain; charset="iso-8859-1" From: Daniel Phillips To: Peter =?iso-8859-1?q?W=E4chtler?= Subject: Re: [ANNOUNCE] Adeos nanokernel for Linux kernel Date: Thu, 6 Jun 2002 18:53:34 +0200 X-Mailer: KMail [version 1.3.2] Cc: Oliver Xymoron , Mark Mielke , linux-kernel In-Reply-To: <3CFF6BAE.8080406@loewe-komp.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Message-Id: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 06 June 2002 16:03, Peter Wächtler wrote: > Daniel Phillips wrote: > > On Thursday 06 June 2002 10:52, Peter Wächtler wrote: > > > LynxOS (now LynuxWorks) has some patents for priority based IO. > > > > Oh, more of those one-click realtime patents ;-) Do you have any > > pointers? > > http://www.lynuxworks.com/products/whitepapers/patentedio.php3 > > In the upper right corner you can see the patent number. Try > a search for patent on this side. This doesn't have anything to do with realtime prioritization of a block driver. Anyway, I didn't go as far as looking at the claims, but from the description on the web page it looks pretty feeble. It seems to be concerned with management of priority of softirq handlers to avoid priority inversion, with a rather slipshod definition of priority inversion given on the page. I doubt RTAI has a lot to fear from this patent, especially as the owner has hitched its cart to the Linux horse, and likely realizes what a bad idea it is to apply cattle prods to said horse. -- Daniel