Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261219AbUJWOnO (ORCPT ); Sat, 23 Oct 2004 10:43:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261215AbUJWOnM (ORCPT ); Sat, 23 Oct 2004 10:43:12 -0400 Received: from mail.tmr.com ([216.238.38.203]:28179 "EHLO gatekeeper.tmr.com") by vger.kernel.org with ESMTP id S261212AbUJWOml (ORCPT ); Sat, 23 Oct 2004 10:42:41 -0400 To: linux-kernel@vger.kernel.org Path: not-for-mail From: Bill Davidsen Newsgroups: mail.linux-kernel Subject: Re: Linux 2.6.9-ac3 Date: Sat, 23 Oct 2004 10:54:25 -0400 Organization: TMR Associates, Inc Message-ID: <417A70A1.4040101@tmr.com> References: <20041022101335.6dcf247a.luca.risolia@studio.unibo.it> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Trace: gatekeeper.tmr.com 1098542071 25167 192.168.12.10 (23 Oct 2004 14:34:31 GMT) X-Complaints-To: abuse@tmr.com Cc: linux-kernel@vger.kernel.org, Alan Cox , Luc Saillard To: Luca Risolia User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7) Gecko/20040616 X-Accept-Language: en-us, en In-Reply-To: <20041022101335.6dcf247a.luca.risolia@studio.unibo.it> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1453 Lines: 27 Luca Risolia wrote: >>o Restore PWC driver (Luc Saillard) > > > This driver does decompression in kernel space, which is not > allowed. That part has to be removed from the driver before > asking for the inclusion in the mainline kernel. What do you mean by "not allowed?" Clearly it would nice if it were in user space, but it would have to be in EVERY user application to be useful. We have compression in kernel for ppp, and there's only one significant use for that, requiring that every application support every vendor hardware makes it a non-scalable NxM problem. The ideal solution would be to convert vendor format to neutral format ala netpbm, and then let the applications handle that format (or a small set of formats). It sounds as if this driver is essentially doing that. This is not hardware which virtually every system includes, so size is not a big issue here. I think that CPU hogging is a valid concern, perhaps that would be a good thing to address rather than taking the "wait a few years for support" approach. -- bill davidsen CTO TMR Associates, Inc Doing interesting things with small computers since 1979 - 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/