From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264891AbUFRAmb (ORCPT ); Thu, 17 Jun 2004 20:42:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264894AbUFRAmb (ORCPT ); Thu, 17 Jun 2004 20:42:31 -0400 Received: from chaos.analogic.com ([204.178.40.224]:43648 "EHLO chaos.analogic.com") by vger.kernel.org with ESMTP id S264891AbUFRAm3 (ORCPT ); Thu, 17 Jun 2004 20:42:29 -0400 Date: Thu, 17 Jun 2004 20:42:16 -0400 (EDT) From: "Richard B. Johnson" X-X-Sender: root@chaos Reply-To: root@chaos.analogic.com To: Davide Libenzi cc: Ben Greear , Linux kernel Subject: Re: poll In-Reply-To: Message-ID: References: <40D21C8E.4040500@candelatech.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 17 Jun 2004, Davide Libenzi wrote: > On Thu, 17 Jun 2004, Richard B. Johnson wrote: > > > This all works fine-and-dandy with kernel 2.4.26. However, Linux > > has a history of removing availability of undefined things. > > It'd work just fine in 2.6. The poll infrastructure is just a proxy to the > event core, and shouldn't mask anything. Your driver's f_op->poll will > return a mask, and this will be and'ed with the mask that you pass to poll(2). > Non-zero results will be reported to you. Just do not use bits 30 and 31 > if you want it to work with epoll. > > - Davide > Thanks. That's what I wanted to hear. Cheers, Dick Johnson Penguin : Linux version 2.4.26 on an i686 machine (5570.56 BogoMips). Note 96.31% of all statistics are fiction.