From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.1 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID, USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29305C3279B for ; Fri, 6 Jul 2018 10:06:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CD79D208A1 for ; Fri, 6 Jul 2018 10:06:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="qfiyd1tq" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CD79D208A1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753816AbeGFKGK (ORCPT ); Fri, 6 Jul 2018 06:06:10 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:44726 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753672AbeGFKED (ORCPT ); Fri, 6 Jul 2018 06:04:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=/PLvGlmhVw4rjb92l1if6tfFUwilqgjuCBZ9c2EO0K4=; b=qfiyd1tqjU8f/slRHk9sVSaT8 azcOk6zi+3ifFeindUwsHd2JR881WKH4keNQ25wu57EOgm5doeVcp6BONEacWNH9WN8IHfA6CJyD/ kjMTK9thfr3IThUzx/4xO3ErYF/FNgSDzf2EtPpwI5xzoz/DLqFPBQBpiG3syGePQ9PTIeZcdQGc1 2Zly+gbM0F8CV+kbQdUsUsOfefskiZzH1iDl1aPqBOPAYsRHE/Dqi1nKdkExnWai9FotBXJfUOkub duoRMEkWAaDMbUe7dP70+nX0bR48d51wGCk/oNKFjtMFeyMyEHfZasI1sIxy1KV1s6/7O8J3DdRgh uhvUg1P4g==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1fbNak-0003tr-OH; Fri, 06 Jul 2018 10:03:54 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 3A5202028932F; Fri, 6 Jul 2018 12:03:53 +0200 (CEST) Date: Fri, 6 Jul 2018 12:03:53 +0200 From: Peter Zijlstra To: Vincent Guittot Cc: Quentin Perret , "Rafael J. Wysocki" , linux-kernel , "open list:THERMAL" , "gregkh@linuxfoundation.org" , Ingo Molnar , Dietmar Eggemann , Morten Rasmussen , Chris Redpath , Patrick Bellasi , Valentin Schneider , Thara Gopinath , viresh kumar , Todd Kjos , Joel Fernandes , "Cc: Steve Muckle" , adharmap@quicinc.com, "Kannan, Saravana" , pkondeti@codeaurora.org, Juri Lelli , Eduardo Valentin , Srinivas Pandruvada , currojerez@riseup.net, Javi Merino Subject: Re: [RFC PATCH v4 03/12] PM: Introduce an Energy Model management framework Message-ID: <20180706100353.GU2476@hirez.programming.kicks-ass.net> References: <20180628114043.24724-1-quentin.perret@arm.com> <20180628114043.24724-4-quentin.perret@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.0 (2018-05-17) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 06, 2018 at 11:57:37AM +0200, Vincent Guittot wrote: > > IIUC the formula above, you consider that all CPUs in a frequency > domain has the same capacity. This sounds a reasonable assumption but > it would be good to write that somewhere Yes, I think there used to be a WARN and kill EM for that, but I cannot seem to locate that in the current code.