From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752003AbZIWMoH (ORCPT ); Wed, 23 Sep 2009 08:44:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751862AbZIWMnn (ORCPT ); Wed, 23 Sep 2009 08:43:43 -0400 Received: from bombadil.infradead.org ([18.85.46.34]:37906 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751193AbZIWMni (ORCPT ); Wed, 23 Sep 2009 08:43:38 -0400 Date: Wed, 23 Sep 2009 08:43:40 -0400 From: Christoph Hellwig To: Arjan van de Ven Cc: Steven Rostedt , linux-kernel@vger.kernel.org, Frederic Weisbecker , mingo@elte.hu Subject: Re: [patch] introduce TRACE_EVENT_ABI (was Re: TRACE_EVENT_ABI ?) Message-ID: <20090923124340.GA6093@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.19 (2009-01-05) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I'm not sure we can support any as an ABI yet. The text format seems to volatile in general - not just the output of the individual trace events but also the common file format, and for the binary format we need to figure a good way to tag the output yet. Also when we define one as one ABI we should make very clear what that means, e.g. does it have to stay exactly as is? Or can we add new fields but not remove old one?