From patchwork Sun May 11 18:16:50 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yuyang Du X-Patchwork-Id: 4155121 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id AC1E49F485 for ; Mon, 12 May 2014 02:26:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E6EEC20179 for ; Mon, 12 May 2014 02:26:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 16ECB2018A for ; Mon, 12 May 2014 02:26:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756403AbaELCZs (ORCPT ); Sun, 11 May 2014 22:25:48 -0400 Received: from mga01.intel.com ([192.55.52.88]:53169 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758404AbaELCWD (ORCPT ); Sun, 11 May 2014 22:22:03 -0400 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga101.fm.intel.com with ESMTP; 11 May 2014 19:22:03 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,1032,1389772800"; d="scan'208";a="530200549" Received: from dalvikqa005-desktop.bj.intel.com ([10.238.151.105]) by fmsmga001.fm.intel.com with ESMTP; 11 May 2014 19:21:57 -0700 From: Yuyang Du To: mingo@redhat.com, peterz@infradead.org, rafael.j.wysocki@intel.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Cc: arjan.van.de.ven@intel.com, len.brown@intel.com, alan.cox@intel.com, mark.gross@intel.com, morten.rasmussen@arm.com, vincent.guittot@linaro.org, rajeev.d.muralidhar@intel.com, vishwesh.m.rudramuni@intel.com, nicole.chalhoub@intel.com, ajaya.durg@intel.com, harinarayanan.seshadri@intel.com, jacob.jun.pan@linux.intel.com, fengguang.wu@intel.com, yuyang.du@intel.com Subject: [RFC PATCH 01/12 v2] CONFIG for CPU ConCurrency Date: Mon, 12 May 2014 02:16:50 +0800 Message-Id: <1399832221-8314-2-git-send-email-yuyang.du@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1399832221-8314-1-git-send-email-yuyang.du@intel.com> References: <1399832221-8314-1-git-send-email-yuyang.du@intel.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-6.0 required=5.0 tests=BAYES_00, DATE_IN_PAST_06_12, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add CONFIG_CPU_CONCURRENCY in arch/x86/Kconfig. This CONFIG enables/disables CPU ConCurrency load metric tracking. Signed-off-by: Yuyang Du --- arch/x86/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 25d2c6f..9bfac8d 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -797,6 +797,17 @@ config SCHED_MC making when dealing with multi-core CPU chips at a cost of slightly increased overhead in some places. If unsure say N here. +config CPU_CONCURRENCY + bool "CPU ConCurency (CC)" + default n + depends on SMP + ---help--- + CPU ConCurrency (CC) is a new CPU load metric that measures the CPU + load by averaging the number of running tasks. Using CC, the scheduler + can evaluate the load of CPUs and may consolidate workloads on CPUs in + load balancing for power efficiency without sacrificing performance. + If unsure say N here. + source "kernel/Kconfig.preempt" config X86_UP_APIC