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=-5.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 AE5A3C433DF for ; Mon, 3 Aug 2020 14:39:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9556F2076E for ; Mon, 3 Aug 2020 14:39:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726370AbgHCOjr (ORCPT ); Mon, 3 Aug 2020 10:39:47 -0400 Received: from foss.arm.com ([217.140.110.172]:58496 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726358AbgHCOjq (ORCPT ); Mon, 3 Aug 2020 10:39:46 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3EF2B30E; Mon, 3 Aug 2020 07:39:46 -0700 (PDT) Received: from localhost (unknown [10.1.198.53]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id D37E63F718; Mon, 3 Aug 2020 07:39:45 -0700 (PDT) Date: Mon, 3 Aug 2020 15:39:44 +0100 From: Ionela Voinescu To: Sudeep Holla Cc: Dietmar Eggemann , Viresh Kumar , rjw@rjwysocki.net, catalin.marinas@arm.com, will@kernel.org, linux@armlinux.org.uk, mingo@redhat.com, peterz@infradead.org, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 3/7] arch_topology: disable frequency invariance for CONFIG_BL_SWITCHER Message-ID: <20200803143944.GA20312@arm.com> References: <20200722093732.14297-1-ionela.voinescu@arm.com> <20200722093732.14297-4-ionela.voinescu@arm.com> <20200730042423.4j22udejluis7blw@vireshk-mac-ubuntu> <1db4317a-0018-1590-f0ae-ed5e235b174f@arm.com> <20200731154838.GB14529@bogus> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200731154838.GB14529@bogus> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Hi guys, On Friday 31 Jul 2020 at 16:48:38 (+0100), Sudeep Holla wrote: > On Thu, Jul 30, 2020 at 12:29:52PM +0200, Dietmar Eggemann wrote: > > [...] > > > > > Are there still any users of CONFIG_BL_SWITCHER? I guess it's only > > limited to A15/A7 systems w/ vexpress-spc-cpufreq.c ... so probably only > > TC2? > > I think so as no one shouted when I merged bL switcher driver into > vexpress-spc-cpufreq.c > I think a good indication is also the fact that frequency invariance was broken for a long time for bL_switcher_enabled systems and nobody shouted. A way to make this nicer is to fully remove BL_SWITCHER support. This support was valuable at its time, but given that now there is proper asymmetric CPU capacity support, is there any reason to hold on to this? Thanks, Ionela. > -- > Regards, > Sudeep