From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1768502Ab2KOQyi (ORCPT ); Thu, 15 Nov 2012 11:54:38 -0500 Received: from e28smtp09.in.ibm.com ([122.248.162.9]:34710 "EHLO e28smtp09.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1768413Ab2KOQyg (ORCPT ); Thu, 15 Nov 2012 11:54:36 -0500 Subject: [RFC v2 PATCH 0/2] sched: Integrating Per-entity-load-tracking with the core scheduler To: paulmck@linux.vnet.ibm.com, vincent.guittot@linaro.org, a.p.zijlstra@chello.nl, viresh.kumar@linaro.org, linux-kernel@vger.kernel.org, amit.kucheria@linaro.org, Morten.Rasmussen@arm.com, paul.mckenney@linaro.org, akpm@linux-foundation.org, svaidy@linux.vnet.ibm.com, arjan@linux.intel.com, mingo@kernel.org, pjt@google.com From: Preeti U Murthy Cc: venki@google.com, robin.randhawa@arm.com, linaro-dev@lists.linaro.org, suresh.b.siddha@intel.com, mjg59@srcf.ucam.org, deepthi@linux.vnet.ibm.com, srivatsa.bhat@linux.vnet.ibm.com, Arvind.Chauhan@arm.com, linux-arm-kernel@lists.infradead.org Date: Thu, 15 Nov 2012 22:23:52 +0530 Message-ID: <20121115164730.17426.36051.stgit@preeti.in.ibm.com> User-Agent: StGit/0.16-38-g167d MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit x-cbid: 12111516-2674-0000-0000-000006BE9EFA Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This approach aims to retain the current behavior of load balancer with the change being only in the metric consumed during load balancing, without unnecessary introduction of new variables.This RFC has been posted to evaluate its design;to see if this is the right way to go about introducing per-entity-load-tracking metric for the consumers of the same; in this specific case,the load balancer.Once the design has been approved off,I can go around to testing it. The patch has been based out of tip-master:HEAD at commit 8a1d31c703d Subject:Merge branch 'x86/urgent' Grateful to Peter Zijlstra and Ingo Molnar for their valuable feedback on v1 of the RFC which was the foundation for this version. PATCH[1/2] Aims at enabling usage of Per-Entity-Load-Tracking for load balacing PATCH[2/2] The crux of the patchset lies here. --- Preeti U Murthy (2): sched: Revert temporary FAIR_GROUP_SCHED dependency for load-tracking sched: Use Per-Entity-Load-Tracking metric for load balancing include/linux/sched.h | 9 +----- kernel/sched/core.c | 19 +++++------- kernel/sched/fair.c | 76 +++++++++++++++++++++---------------------------- kernel/sched/sched.h | 9 +----- 4 files changed, 43 insertions(+), 70 deletions(-) -- Preeti U Murthy