From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758878Ab3BLK16 (ORCPT ); Tue, 12 Feb 2013 05:27:58 -0500 Received: from merlin.infradead.org ([205.233.59.134]:33948 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756472Ab3BLK14 (ORCPT ); Tue, 12 Feb 2013 05:27:56 -0500 Message-ID: <1360664874.4485.18.camel@laptop> Subject: Re: [patch v4 08/18] Revert "sched: Introduce temporary FAIR_GROUP_SCHED dependency for load-tracking" From: Peter Zijlstra To: Alex Shi Cc: torvalds@linux-foundation.org, mingo@redhat.com, tglx@linutronix.de, akpm@linux-foundation.org, arjan@linux.intel.com, bp@alien8.de, pjt@google.com, namhyung@kernel.org, efault@gmx.de, vincent.guittot@linaro.org, gregkh@linuxfoundation.org, preeti@linux.vnet.ibm.com, viresh.kumar@linaro.org, linux-kernel@vger.kernel.org Date: Tue, 12 Feb 2013 11:27:54 +0100 In-Reply-To: <1358996820-23036-9-git-send-email-alex.shi@intel.com> References: <1358996820-23036-1-git-send-email-alex.shi@intel.com> <1358996820-23036-9-git-send-email-alex.shi@intel.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.2- Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2013-01-24 at 11:06 +0800, Alex Shi wrote: > Remove CONFIG_FAIR_GROUP_SCHED that covers the runnable info, then > we can use runnable load variables. > It would be nice if we could quantify the performance hit of doing so. Haven't yet looked at later patches to see if we remove anything to off-set this.