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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 A70F7C2D0C0 for ; Mon, 9 Dec 2019 09:54:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7E5A824683 for ; Mon, 9 Dec 2019 09:54:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727387AbfLIJya (ORCPT ); Mon, 9 Dec 2019 04:54:30 -0500 Received: from comms.puri.sm ([159.203.221.185]:34112 "EHLO comms.puri.sm" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727144AbfLIJya (ORCPT ); Mon, 9 Dec 2019 04:54:30 -0500 Received: from localhost (localhost [127.0.0.1]) by comms.puri.sm (Postfix) with ESMTP id 02510E0E8A; Mon, 9 Dec 2019 01:54:29 -0800 (PST) Received: from comms.puri.sm ([127.0.0.1]) by localhost (comms.puri.sm [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Pl6w9f2EDwrM; Mon, 9 Dec 2019 01:54:28 -0800 (PST) Subject: Re: [PATCH V4 4/4] thermal/drivers/cpu_cooling: Rename to cpufreq_cooling To: Daniel Lezcano , edubezval@gmail.com, rui.zhang@intel.com Cc: rjw@rjwysocki.net, linux-pm@vger.kernel.org, viresh.kumar@linaro.org, amit.kucheria@linaro.org, linux-kernel@vger.kernel.org References: <20191204153930.9128-4-daniel.lezcano@linaro.org> <20191206113315.18954-1-martin.kepplinger@puri.sm> From: Martin Kepplinger Autocrypt: addr=martin.kepplinger@puri.sm; keydata= mQINBFULfZABEADRxJqDOYAHfrp1w8Egcv88qoru37k1x0Ugy8S6qYtKLAAt7boZW+q5gPv3 Sj2KjfkWA7gotXpASN21OIfE/puKGwhDLAySY1DGNMQ0gIVakUO0ji5GJPjeB9JlmN5hbA87 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Af4wUksA+TEUl2XPu84pjLMUbm0FA+sUnGvMkhCn8YdQtEbcgNYq4eIlOjHW+h7zU2G5/pm+ FmxNAJx7iiXaUY9KQ3snoEz3r37RxEDcvTY9KKahwxEzk2Mf58OPVaV4PEsRianrmErSUfmp l93agbtZK1r5LaxeItFOj+O2hWFLNDenJRlBYwXwlJCiHxM/O273hZZPoP8L5p54uXhaS5EJ uV2Xzgbi3VEbw3GZr+EnDC7XNE2wUrnlD/w2W6RzVYjVT6IX4SamNlV+MWX0/1fYCutfqZl8 6BSKmJjlWpfkPKzyzjhGQVZrTZYnKAu471hRv8/6Dx5JuZJgDCnYanNx3DDreRMu/nq6TfaO ekMtxgNYb/8oDry09UFHbGHLsWn6oBo= Message-ID: <7ae753bd-8330-6652-0207-0c884d722a6c@puri.sm> Date: Mon, 9 Dec 2019 10:54:24 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06.12.19 15:15, Daniel Lezcano wrote: > On 06/12/2019 12:33, Martin Kepplinger wrote: >> I tested this on the librem5-devkit and see the >> cooling devices in sysfs. I configure ARM_PSCI_CPUIDLE, not ARM_CPUIDLE and >> add the patch below in register the cooling device there. "psci_idle" >> is listed as the cpuidle_driver. >> >> That's what I'm running, in case you want to see it all: >> https://source.puri.sm/martin.kepplinger/linux-next/commits/next-20191205/librem5_cpuidle_mainline_atf >> >> so I add a trip temperature description like this: >> https://source.puri.sm/martin.kepplinger/linux-next/commit/361f49f93ae2c477fd012790831cabd0ed976660 >> >> When I let the SoC heat up, cpuidle cooling won't kick it. In sysfs: >> >> catting the relevant files in /sys/class/thermal after heating up, >> if that makes sense: >> >> 87000 >> 85000 >> 85000 >> thermal-cpufreq-0 >> 1 >> thermal-idle-0 >> 0 >> thermal-idle-1 >> 0 >> thermal-idle-2 >> 0 >> thermal-idle-3 >> 0 >> >> with ARM_CPUIDLE instead of ARM_PSCI_CPUIDLE (and registering the cooling dev >> during cpuidle-arm.c init) I won't have a cpuidle driver and thus no cpu-sleep >> state at all. >> >> Can you see where the problem here lies? > > Yes, I removed the registration via the DT. > > Can you try the following: > > diff --git a/drivers/cpuidle/dt_idle_states.c > b/drivers/cpuidle/dt_idle_states.c > index d06d21a9525d..01367ddec49a 100644 > --- a/drivers/cpuidle/dt_idle_states.c > +++ b/drivers/cpuidle/dt_idle_states.c > @@ -13,6 +13,7 @@ > #include > #include > #include > +#include > #include > #include > > @@ -205,6 +206,9 @@ int dt_init_idle_driver(struct cpuidle_driver *drv, > err = -EINVAL; > break; > } > + > + cpuidle_of_cooling_register(state_node, drv); > + > of_node_put(state_node); > } > > That's a hack for the moment. > thanks. I could test that successfully. The only question would be: Is is intentional how "non-aggressive" the cooling driver cools? I would have expected it to basically inject more idle cycles earlier. I'd set 75 degrees as trip point and at 85 degress is would only inject about 30 (of 100). You describe the "config values" in question in the documentation, but I'm not sure what's the correct way to change them. thanks, martin