From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753375Ab2AZSXP (ORCPT ); Thu, 26 Jan 2012 13:23:15 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:52049 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753348Ab2AZSXN (ORCPT ); Thu, 26 Jan 2012 13:23:13 -0500 Message-ID: <4F2199E4.3020107@fb.com> Date: Thu, 26 Jan 2012 10:22:28 -0800 From: Arun Sharma User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:8.0) Gecko/20111105 Thunderbird/8.0 MIME-Version: 1.0 To: Peter Zijlstra CC: Stephane Eranian , , , , , , Subject: Re: [PATCH] perf_events: fix broken intr throttling (v3) References: <20120126160319.GA5655@quad> <1327594589.2446.112.camel@twins> In-Reply-To: <1327594589.2446.112.camel@twins> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [192.168.18.252] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.6.7361,1.0.211,0.0.0000 definitions=2012-01-26_07:2012-01-26,2012-01-26,1970-01-01 signatures=0 X-Proofpoint-Spam-Reason: safe Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/26/12 8:16 AM, Peter Zijlstra wrote: > On Thu, 2012-01-26 at 17:03 +0100, Stephane Eranian wrote: >> This patch fixes the throttling mechanism. It was broken >> in 3.2.0. Events were not being unthrottled. The unthrottling >> mechanism required that events be checked at each timer tick. >> >> This patch solves this problem and also separates: >> - unthrottling >> - multiplexing >> - frequency-mode period adjustments > > Thanks! Should this be Cc'ed to stable@? -Arun