From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761238Ab0HFL0l (ORCPT ); Fri, 6 Aug 2010 07:26:41 -0400 Received: from one.firstfloor.org ([213.235.205.2]:33143 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752510Ab0HFL0i (ORCPT ); Fri, 6 Aug 2010 07:26:38 -0400 From: Andi Kleen To: Jiri Olsa Cc: mingo@elte.hu, rostedt@goodmis.org, yhlu.kernel@gmail.com, linux-kernel@vger.kernel.org Subject: Re: [RFC 0/2] apic: tracing IPI events References: <1281006578-5073-1-git-send-email-jolsa@redhat.com> Date: Fri, 06 Aug 2010 13:26:36 +0200 In-Reply-To: <1281006578-5073-1-git-send-email-jolsa@redhat.com> (Jiri Olsa's message of "Thu, 5 Aug 2010 13:09:36 +0200") Message-ID: <87bp9gc783.fsf@basil.nowhere.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Jiri Olsa writes: > > please let me know what you think You forgot to state why you want it? In generall the only case that should happen anytime commonly is mask, the others only for obscure uncommon paths. However there is already accounting for it in /proc/interrupts that can be easily sampled. Does adding additional tracing really give any value? -Andi -- ak@linux.intel.com -- Speaking for myself only.