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 E65F0ECE560 for ; Mon, 24 Sep 2018 15:56:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9116520883 for ; Mon, 24 Sep 2018 15:56:43 +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="lvcEFd/F" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9116520883 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 S1731828AbeIXV7b (ORCPT ); Mon, 24 Sep 2018 17:59:31 -0400 Received: from merlin.infradead.org ([205.233.59.134]:46526 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729466AbeIXV7b (ORCPT ); Mon, 24 Sep 2018 17:59:31 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.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=cd4dloH5vUxWJQ5leOBmd7ke16LGZpzczxS1cOU2ocY=; b=lvcEFd/FkCnOvcIA9+Te4gNEo YIfCQuvA6fyV7/4R7THppO4Y7yGnXTzcgi8prVaDxSwhWpD7x+nEFNdkF6YQ+2adEKJP+G8uZ/8zU IRyidsymuVscr4wc7J/Z0cWUMrPhX1Ius+G53BBzXhPioPgea99PL+cbY4gFWoq1HS5yYmN6yEdI4 L1pYAZ5AyxfWgCGvYvdO58ljgULkndj3dlsC9aqWrPwdwKLDN/0mYCYK0586cYdF1D4s/gKaOGwHI hXgbJG/0rYb6bBKrD6S8XfcQUSfwLAfUYCJAp5Okb/tW0M1N+6g8EeK5fMPfAZx37zIPRiDCDW40Q 4xZgpAZ2A==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1g4TDg-0003bK-3C; Mon, 24 Sep 2018 15:56:20 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 87CC52029F875; Mon, 24 Sep 2018 17:56:16 +0200 (CEST) Date: Mon, 24 Sep 2018 17:56:16 +0200 From: Peter Zijlstra To: Patrick Bellasi Cc: Juri Lelli , linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Ingo Molnar , Tejun Heo , "Rafael J . Wysocki" , Viresh Kumar , Vincent Guittot , Paul Turner , Quentin Perret , Dietmar Eggemann , Morten Rasmussen , Todd Kjos , Joel Fernandes , Steve Muckle , Suren Baghdasaryan Subject: Re: [PATCH v4 14/16] sched/core: uclamp: request CAP_SYS_ADMIN by default Message-ID: <20180924155616.GA7060@hirez.programming.kicks-ass.net> References: <20180828135324.21976-1-patrick.bellasi@arm.com> <20180828135324.21976-15-patrick.bellasi@arm.com> <20180904134748.GA4974@localhost.localdomain> <20180906144053.GD25636@e110439-lin> <20180914111003.GC24082@hirez.programming.kicks-ass.net> <20180914140732.GR1413@e110439-lin> <20180914142813.GM24124@hirez.programming.kicks-ass.net> <20180917122723.GS1413@e110439-lin> <20180921091308.GD24082@hirez.programming.kicks-ass.net> <20180924151400.GT1413@e110439-lin> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180924151400.GT1413@e110439-lin> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Archived-At: List-Archive: List-Post: On Mon, Sep 24, 2018 at 04:14:00PM +0100, Patrick Bellasi wrote: > On 21-Sep 11:13, Peter Zijlstra wrote: > > Laptops with active cooling however... > > How do you see active cooling playing a role ? > > Are you thinking, for example, at reduced fan noise if we remain below > a certain OPP ? > > Are you factoring fans power consumptions into the overall P consumption ? Nothing as fancy as that; I just figured that with a larger cooling capacity, you can push chips higher onto that curve past the optimal IPC/Watt point. Make it go fast etc..