From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754066AbcAOGu4 (ORCPT ); Fri, 15 Jan 2016 01:50:56 -0500 Received: from mail-wm0-f46.google.com ([74.125.82.46]:36969 "EHLO mail-wm0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751141AbcAOGuy (ORCPT ); Fri, 15 Jan 2016 01:50:54 -0500 Date: Fri, 15 Jan 2016 07:50:49 +0100 From: Luca Abeni To: Peter Zijlstra Cc: linux-kernel@vger.kernel.org, Ingo Molnar , Juri Lelli Subject: Re: [RFC 5/8] Track the "total rq utilisation" too Message-ID: <20160115075049.1e24bde8@luca-1225C> In-Reply-To: <20160114194837.GE6357@twins.programming.kicks-ass.net> References: <1452785094-3086-1-git-send-email-luca.abeni@unitn.it> <1452785094-3086-6-git-send-email-luca.abeni@unitn.it> <20160114194837.GE6357@twins.programming.kicks-ass.net> X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 14 Jan 2016 20:48:37 +0100 Peter Zijlstra wrote: > On Thu, Jan 14, 2016 at 04:24:50PM +0100, Luca Abeni wrote: > > This is the sum of the utilisations of tasks that are assigned to > > a runqueue, independently from their state (TASK_RUNNING or blocked) > > Is it actually used? Not in this patchset... It is a possible "cheap" (but less accurate) alternative to the tracking introduced in patch 4. Or can be used in more advanced implementations of multi-processor GRUB, but not in this patchset. So, it can be removed from the patchset; I added it so that people can see all the possible alternative utilization tracking strategies. Thanks, Luca