Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 1 Aug 2002 12:10:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 1 Aug 2002 12:10:39 -0400 Received: from pc2-cwma1-5-cust12.swa.cable.ntl.com ([80.5.121.12]:39408 "EHLO irongate.swansea.linux.org.uk") by vger.kernel.org with ESMTP id ; Thu, 1 Aug 2002 12:10:38 -0400 Subject: Re: [rfc] aio-core for 2.5.29 (Re: async-io API registration for 2.5.29) From: Alan Cox To: Linus Torvalds Cc: Chris Friesen , Benjamin LaHaise , Pavel Machek , Andrea Arcangeli , linux-kernel@vger.kernel.org, linux-aio@kvack.org In-Reply-To: References: Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Mailer: Ximian Evolution 1.0.3 (1.0.3-6) Date: 01 Aug 2002 18:30:41 +0100 Message-Id: <1028223041.14865.80.camel@irongate.swansea.linux.org.uk> Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 748 Lines: 16 On Thu, 2002-08-01 at 17:09, Linus Torvalds wrote: > However, "jiffies" are not really real time, they are only a "reasonable > abstraction thereof", and while they imply ordering ("time_after()" works > fine inside the kernel), they do _not_ imply real time. > > In other words, there is no way to move from time -> jiffies and back. For a lot of applications like multimedia you actually want a counting of time not any relation to real time except that you can tell how many ticks elapse a second. - 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/