From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 31 Jan 2001 18:35:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 31 Jan 2001 18:35:22 -0500 Received: from zeus.kernel.org ([209.10.41.242]:43747 "EHLO zeus.kernel.org") by vger.kernel.org with ESMTP id ; Wed, 31 Jan 2001 18:35:04 -0500 Date: Wed, 31 Jan 2001 23:32:52 +0000 From: "Stephen C. Tweedie" To: bsuparna@in.ibm.com Cc: Ben LaHaise , "Stephen C. Tweedie" , linux-kernel@vger.kernel.org, kiobuf-io-devel@lists.sourceforge.net Subject: Re: [Kiobuf-io-devel] RFC: Kernel mechanism: Compound event wait /notify + callback chains Message-ID: <20010131233252.I11607@redhat.com> In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2i In-Reply-To: ; from bsuparna@in.ibm.com on Wed, Jan 31, 2001 at 07:28:01PM +0530 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Wed, Jan 31, 2001 at 07:28:01PM +0530, bsuparna@in.ibm.com wrote: > > Do the following modifications to your wait queue extension sound > reasonable ? > > 1. Change add_wait_queue to add elements to the end of queue (fifo, by > default) and instead have an add_wait_queue_lifo() routine that adds to the > head of the queue ? Cache efficiency: you wake up the task whose data set is most likely to be in L1 cache by waking it before its triggering event is flushed from cache. --Stephen - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/