From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754944Ab1GGACl (ORCPT ); Wed, 6 Jul 2011 20:02:41 -0400 Received: from terminus.zytor.com ([198.137.202.10]:54834 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754139Ab1GGACk (ORCPT ); Wed, 6 Jul 2011 20:02:40 -0400 Message-ID: <4E14F797.8070501@zytor.com> Date: Wed, 06 Jul 2011 17:02:31 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110428 Fedora/3.1.10-1.fc15 Thunderbird/3.1.10 MIME-Version: 1.0 To: Frederic Weisbecker CC: David Sharp , Vaibhav Nagarnaik , Thomas Gleixner , Ingo Molnar , Steven Rostedt , Michael Rubin , x86@kernel.org, "linux-kernel@vger.kernel.org" , Jiaying Zhang Subject: Re: [PATCH v2] trace: Add x86 irq vector entry/exit tracepoints References: <1304107962-18576-1-git-send-email-vnagarnaik@google.com> <1306877298-31713-1-git-send-email-vnagarnaik@google.com> <20110531235957.GB5256@somewhere.redhat.com> <20110616030200.GC18579@somewhere.redhat.com> <4E14F31B.4080102@zytor.com> <20110706235613.GA21115@somewhere> In-Reply-To: <20110706235613.GA21115@somewhere> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/06/2011 04:56 PM, Frederic Weisbecker wrote: > And even if tracepoints are not supposed to be stable ABI (I actually believe there > is no absolute answer to that, it depends on the tracepoint and on the context), > tools are much happier with a common tracepoint interface amongst archs. What you're suggesting here is an ad hoc ABI. This is insanely irresponsible -- ABIs need to be designed, not randomly appeared. -hpa