From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755676AbYDZLN3 (ORCPT ); Sat, 26 Apr 2008 07:13:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752556AbYDZLNW (ORCPT ); Sat, 26 Apr 2008 07:13:22 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:35320 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752291AbYDZLNV (ORCPT ); Sat, 26 Apr 2008 07:13:21 -0400 Date: Sat, 26 Apr 2008 13:13:07 +0200 From: Ingo Molnar To: Pekka Paalanen Cc: Steven Rostedt , linux-kernel@vger.kernel.org, Mathieu Desnoyers Subject: Re: [PATCH v2] x86 mmiotrace: dynamically disable non-boot CPUs Message-ID: <20080426111307.GA401@elte.hu> References: <20080413224207.4430a09c@daedalus.pq.iki.fi> <20080413230552.33ca587a@daedalus.pq.iki.fi> <20080424223947.55c053f6@daedalus.pq.iki.fi> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080424223947.55c053f6@daedalus.pq.iki.fi> User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Pekka Paalanen wrote: > From 8979ee55cb6a429c4edd72ebec2244b849f6a79a Mon Sep 17 00:00:00 2001 > From: Pekka Paalanen > Date: Sat, 12 Apr 2008 00:18:57 +0300 > Subject: [PATCH] x86 mmiotrace: dynamically disable non-boot CPUs > > Mmiotrace is not reliable with multiple CPUs and may miss events. Drop > to single CPU when mmiotrace is activated. > > Signed-off-by: Pekka Paalanen > --- > > I've tested this patch on my Core 2 Duo laptop, and with "[PATCH v2] > Check for breakpoint in text_poke to eliminate bug_on" cpu hotplug > seems to work fine on a sched-devel/latest SMP kernel both with and > without CONFIG_HOTPLUG_CPU. thanks Pekka, applied. Ingo