From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752208AbaLRH7v (ORCPT ); Thu, 18 Dec 2014 02:59:51 -0500 Received: from mail-wi0-f171.google.com ([209.85.212.171]:54903 "EHLO mail-wi0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751509AbaLRH7u (ORCPT ); Thu, 18 Dec 2014 02:59:50 -0500 Date: Thu, 18 Dec 2014 07:59:46 +0000 From: Matt Fleming To: Peter Zijlstra , Ingo Molnar , Jiri Olsa , Arnaldo Carvalho de Melo , Andi Kleen Cc: Thomas Gleixner , linux-kernel@vger.kernel.org, "H. Peter Anvin" , Kanaka Juvva , Matt Fleming , Stephane Eranian Subject: Re: [PATCH v4 00/11] perf: Intel Cache QoS Monitoring support Message-ID: <20141218075946.GA11685@console-pimps.org> References: <1415999712-5850-1-git-send-email-matt@console-pimps.org> <20141125145509.GB3331@console-pimps.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20141125145509.GB3331@console-pimps.org> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 25 Nov, at 02:55:09PM, Matt Fleming wrote: > On Fri, 14 Nov, at 09:15:01PM, Matt Fleming wrote: > > From: Matt Fleming > > > > This patch series adds a new PMU driver for the Intel Cache Monitoring > > hardware feature available in Intel Xeon processors, which allows > > monitoring of LLC occupancy on a task, group or system-wide basis. > > > > The first few patches modify tools/perf to handle per-package counters, > > which necessitates discarding some values when doing per-cpu reads to > > avoid getting duplicate data. The rest add support for the new PMU code. > > > > I've left a notoriously funky bit of code near the end of the series, > > the RMID rotation code, in an attempt to simplify things. Doing the > > rotation provides the ability to multiplex the RMIDs and basically > > overcome the hardware limitation, but the rest of the patches work fine > > without it. But there are a number of scenarios where being able to > > monitor more tasks than RMIDs is extremely useful. > > > > The series is based on tip/perf/core. > > Any feedback on this series? > > Stephane, the original thread is here, > > https://lkml.kernel.org/r/1415999712-5850-1-git-send-email-matt@console-pimps.org Ping. -- Matt Fleming, Intel Open Source Technology Center