From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752406AbeERKRq (ORCPT ); Fri, 18 May 2018 06:17:46 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:47208 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752282AbeERKRn (ORCPT ); Fri, 18 May 2018 06:17:43 -0400 Date: Fri, 18 May 2018 11:17:38 +0100 From: Patrick Bellasi To: Peter Zijlstra Cc: Vincent Guittot , mingo@kernel.org, linux-kernel@vger.kernel.org, dietmar.eggemann@arm.com, Morten.Rasmussen@arm.com, yuyang.du@intel.com, pjt@google.com, bsegall@google.com, "Rafael J. Wysocki" Subject: Re: [PATCH v3] sched/fair: update scale invariance of PELT Message-ID: <20180518101738.GM30654@e110439-lin> References: <1493389435-2525-1-git-send-email-vincent.guittot@linaro.org> <20180518093638.GL12198@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180518093638.GL12198@hirez.programming.kicks-ass.net> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 18-May 11:36, Peter Zijlstra wrote: > > Replying to the latest version available; given the current interest I > figure I'd re-read some of the old threads and look at this stuff again. > > On Fri, Apr 28, 2017 at 04:23:55PM +0200, Vincent Guittot wrote: > > > diff --git a/include/linux/sched.h b/include/linux/sched.h > > index 0978fb7..f8dde36 100644 > > --- a/include/linux/sched.h > > +++ b/include/linux/sched.h > > @@ -313,6 +313,7 @@ struct load_weight { > > */ > > struct sched_avg { > > u64 last_update_time; > > + u64 stolen_idle_time; > > u64 load_sum; > > u32 util_sum; > > u32 period_contrib; > > Right, so sadly Patrick stole that space with the util_est bits. Sorry :( However, I remember we already talked about the idea to update load_avg and runnable_load_avg to use u32: https://marc.info/?l=linux-kernel&m=151334269426419&w=2 -- #include Patrick Bellasi