From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752578Ab2IYDiq (ORCPT ); Mon, 24 Sep 2012 23:38:46 -0400 Received: from terminus.zytor.com ([198.137.202.10]:32886 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752208Ab2IYDip (ORCPT ); Mon, 24 Sep 2012 23:38:45 -0400 Message-ID: <50612729.2080307@zytor.com> Date: Mon, 24 Sep 2012 20:38:17 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120911 Thunderbird/15.0.1 MIME-Version: 1.0 To: Seiji Aguchi CC: "Thomas Gleixner (tglx@linutronix.de)" , "linux-kernel@vger.kernel.org" , "rostedt@goodmis.org" , "'mingo@elte.hu' (mingo@elte.hu)" , "x86@kernel.org" , "dle-develop@lists.sourceforge.net" , Satoru Moriya Subject: Re: [PATCH v4] trace,x86: add x86 irq vector tracepoints References: In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/21/2012 05:40 PM, Seiji Aguchi wrote: > > Those x86 specific ones are not really frequently raised vectors, so > enabling them all won't affect performance and readability of the > traces too much. > ... except the cost can be reduced to zero *AND* be made into a more general mechanism by simply hooking the IDT. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.