From patchwork Fri May 30 06:36:09 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yuyang Du X-Patchwork-Id: 4271261 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id AFDE0BEEA7 for ; Fri, 30 May 2014 14:42:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C6E9920395 for ; Fri, 30 May 2014 14:42:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 461AA20384 for ; Fri, 30 May 2014 14:42:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933599AbaE3Olv (ORCPT ); Fri, 30 May 2014 10:41:51 -0400 Received: from mga09.intel.com ([134.134.136.24]:29786 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933564AbaE3Olt (ORCPT ); Fri, 30 May 2014 10:41:49 -0400 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP; 30 May 2014 07:36:38 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.98,941,1392192000"; d="scan'208";a="548947165" Received: from dalvikqa005-desktop.bj.intel.com ([10.238.151.105]) by orsmga002.jf.intel.com with ESMTP; 30 May 2014 07:41:44 -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, pjt@google.com, bsegall@google.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 13/16 v3] Intercept wakeup/fork/exec load balancing Date: Fri, 30 May 2014 14:36:09 +0800 Message-Id: <1401431772-14320-14-git-send-email-yuyang.du@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1401431772-14320-1-git-send-email-yuyang.du@intel.com> References: <1401431772-14320-1-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 We intercept load balancing to contain the load and load balancing in the consolidated CPUs according to our consolidating mechanism. In wakeup/fork/exec load balaning, when to find the idlest sched_group, we first try to find the consolidated group Signed-off-by: Yuyang Du --- kernel/sched/fair.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index d40ec9e..1c9ac08 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4475,7 +4475,7 @@ select_task_rq_fair(struct task_struct *p, int prev_cpu, int sd_flag, int wake_f } while (sd) { - struct sched_group *group; + struct sched_group *group = NULL; int weight; if (!(sd->flags & sd_flag)) { @@ -4483,7 +4483,12 @@ select_task_rq_fair(struct task_struct *p, int prev_cpu, int sd_flag, int wake_f continue; } - group = find_idlest_group(sd, p, cpu, sd_flag); + if (sd->flags & SD_WORKLOAD_CONSOLIDATION) + group = wc_find_group(sd, p, cpu); + + if (!group) + group = find_idlest_group(sd, p, cpu, sd_flag); + if (!group) { sd = sd->child; continue;