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=-5.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,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 D4826C04E30 for ; Mon, 9 Dec 2019 19:29:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9C0B5205ED for ; Mon, 9 Dec 2019 19:29:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="O3NAF7JK" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726691AbfLIT3S (ORCPT ); Mon, 9 Dec 2019 14:29:18 -0500 Received: from mail-wr1-f68.google.com ([209.85.221.68]:36340 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726509AbfLIT3R (ORCPT ); Mon, 9 Dec 2019 14:29:17 -0500 Received: by mail-wr1-f68.google.com with SMTP id z3so17520416wru.3 for ; Mon, 09 Dec 2019 11:29:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=subject:from:to:cc:references:autocrypt:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=dy7Dii+iNq8UhqOgpbCpMdX6EgexePwgfNSsH+VMksM=; b=O3NAF7JK04jxeU5DERV5fAP9+Rse/XeoYIR3YL7Byj6Jo6tBmFkw5LAAREN7K7Fa8l gNF6oeZZvdS635XD/6lyIj0J21qYA1k+upGMcLJfhj1ZvKmROrfxYTf3k8ZECIMoPNwh kiPN4Iyl2zz7vHswV0zeqvSUhzf8trytx/9A0S7ZY70m1YH+vF/pJitx5FPrbxr1hTim CkzHr2sBTgEucEVv03tlG/xHf731M5cSFZVld/UEBgp3IUKD/Qzzr4dyAtiWroynbEaN Oc7aH7btXFJ+VM9gYh6GrsF+k8Fis/vU05r+S8sDHkbko3xXdeecPZYrlErYDofpUEEu WwEQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:from:to:cc:references:autocrypt :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=dy7Dii+iNq8UhqOgpbCpMdX6EgexePwgfNSsH+VMksM=; b=QlGSzO4oU9UCfgfy/Dqpm+RrTRnaeS3Ajm9c8+qRu9d/iXdXNdM3jztDJC+sNYNp89 Fjpqd5Q1jIyQzChEzKwqTOQaI3BnxIvhZkYDS+GftwWmmm33czj79mp8EKMTMGz1pN34 pPOu0gR3LK8r7HuDutROZMaOplpsBMFNXWGbqQcvSIQFO4Lyl4q3LlzJdsPZLlCFRwoV 4r4WpOoseUoYGUktQ3tw3AJInjaFNhcUxTFAh3e6Vwh/xOj67CDVd1vPTjt1caXBa3ZW Ztg06caDS9+YxN3C4OKc84BrALVUNEODfgSgst2rXk+tzcU0F3CDSJ7RYYhpKqWC++6y yJNw== X-Gm-Message-State: APjAAAVn9hSGwtxnnp7Zg+ojGhnH99Cf6GN5Z2I0AvZBu7OqL2ElTU4k PTgOMtlL5zOePT9fHOzxxcok+h9mmew= X-Google-Smtp-Source: APXvYqxHkdPeWQsO0zEVMHL5zE7DGyTeWOFkLa9aTd96bClIILLpwOfmAqOZ61wtuHg++AQM59S2Lg== X-Received: by 2002:adf:dd8a:: with SMTP id x10mr3928226wrl.117.1575919754626; Mon, 09 Dec 2019 11:29:14 -0800 (PST) Received: from ?IPv6:2a01:e34:ed2f:f020:683a:fee4:9950:e8ce? ([2a01:e34:ed2f:f020:683a:fee4:9950:e8ce]) by smtp.googlemail.com with ESMTPSA id x17sm486607wrt.74.2019.12.09.11.29.13 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 09 Dec 2019 11:29:13 -0800 (PST) Subject: Re: [PATCH V4 4/4] thermal/drivers/cpu_cooling: Rename to cpufreq_cooling From: Daniel Lezcano To: Martin Kepplinger , 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> <7ae753bd-8330-6652-0207-0c884d722a6c@puri.sm> <2beb4758-d66d-e8d9-a64d-86ce361aa57f@linaro.org> Autocrypt: addr=daniel.lezcano@linaro.org; prefer-encrypt=mutual; keydata= xsFNBFv/yykBEADDdW8RZu7iZILSf3zxq5y8YdaeyZjI/MaqgnvG/c3WjFaunoTMspeusiFE sXvtg3ehTOoyD0oFjKkHaia1Zpa1m/gnNdT/WvTveLfGA1gH+yGes2Sr53Ht8hWYZFYMZc8V 2pbSKh8wepq4g8r5YI1XUy9YbcTdj5mVrTklyGWA49NOeJz2QbfytMT3DJmk40LqwK6CCSU0 9Ed8n0a+vevmQoRZJEd3Y1qXn2XHys0F6OHCC+VLENqNNZXdZE9E+b3FFW0lk49oLTzLRNIq 0wHeR1H54RffhLQAor2+4kSSu8mW5qB0n5Eb/zXJZZ/bRiXmT8kNg85UdYhvf03ZAsp3qxcr xMfMsC7m3+ADOtW90rNNLZnRvjhsYNrGIKH8Ub0UKXFXibHbafSuq7RqyRQzt01Ud8CAtq+w P9EftUysLtovGpLSpGDO5zQ++4ZGVygdYFr318aGDqCljKAKZ9hYgRimPBToDedho1S1uE6F 6YiBFnI3ry9+/KUnEP6L8Sfezwy7fp2JUNkUr41QF76nz43tl7oersrLxHzj2dYfWUAZWXva wW4IKF5sOPFMMgxoOJovSWqwh1b7hqI+nDlD3mmVMd20VyE9W7AgTIsvDxWUnMPvww5iExlY eIC0Wj9K4UqSYBOHcUPrVOKTcsBVPQA6SAMJlt82/v5l4J0pSQARAQABzSpEYW5pZWwgTGV6 Y2FubyA8ZGFuaWVsLmxlemNhbm9AbGluYXJvLm9yZz7Cwa4EEwEIAEECGwEFCwkIBwIGFQoJ CAsCBBYCAwECHgECF4ACGQEWIQQk1ibyU76eh+bOW/SP9LjScWdVJwUCXAkeagUJDRnjhwAh CRCP9LjScWdVJxYhBCTWJvJTvp6H5s5b9I/0uNJxZ1Un69gQAJK0ODuKzYl0TvHPU8W7uOeu U7OghN/DTkG6uAkyqW+iIVi320R5QyXN1Tb6vRx6+yZ6mpJRW5S9fO03wcD8Sna9xyZacJfO UTnpfUArs9FF1pB3VIr95WwlVoptBOuKLTCNuzoBTW6jQt0sg0uPDAi2dDzf+21t/UuF7I3z KSeVyHuOfofonYD85FkQJN8lsbh5xWvsASbgD8bmfI87gEbt0wq2ND5yuX+lJK7FX4lMO6gR ZQ75g4KWDprOO/w6ebRxDjrH0lG1qHBiZd0hcPo2wkeYwb1sqZUjQjujlDhcvnZfpDGR4yLz 5WG+pdciQhl6LNl7lctNhS8Uct17HNdfN7QvAumYw5sUuJ+POIlCws/aVbA5+DpmIfzPx5Ak UHxthNIyqZ9O6UHrVg7SaF3rvqrXtjtnu7eZ3cIsfuuHrXBTWDsVwub2nm1ddZZoC530BraS d7Y7eyKs7T4mGwpsi3Pd33Je5aC/rDeF44gXRv3UnKtjq2PPjaG/KPG0fLBGvhx0ARBrZLsd 5CTDjwFA4bo+pD13cVhTfim3dYUnX1UDmqoCISOpzg3S4+QLv1bfbIsZ3KDQQR7y/RSGzcLE z164aDfuSvl+6Myb5qQy1HUQ0hOj5Qh+CzF3CMEPmU1v9Qah1ThC8+KkH/HHjPPulLn7aMaK Z8t6h7uaAYnGzjMEXZLIEhYJKwYBBAHaRw8BAQdAGdRDglTydmxI03SYiVg95SoLOKT5zZW1 7Kpt/5zcvt3CwhsEGAEIACAWIQQk1ibyU76eh+bOW/SP9LjScWdVJwUCXZLIEgIbAgCvCRCP 9LjScWdVJ40gBBkWCAAdFiEEbinX+DPdhovb6oob3uarTi9/eqYFAl2SyBIAIQkQ3uarTi9/ eqYWIQRuKdf4M92Gi9vqihve5qtOL396pnZGAP0c3VRaj3RBEOUGKxHzcu17ZUnIoJLjpHdk NfBnWU9+UgD/bwTxE56Wd8kQZ2e2UTy4BM8907FsJgAQLL4tD2YZggwWIQQk1ibyU76eh+bO W/SP9LjScWdVJ5CaD/0YQyfUzjpR1GnCSkbaLYTEUsyaHuWPI/uSpKTtcbttpYv+QmYsIwD9 8CeH3zwY0Xl/1fE9Hy59z6Vxv9YVapLx0nPDOA1zDVNq2MnutxHb8t+Imjz4ERCxysqtfYrv gao3E/h0c8SEeh+bh5MkjwmU8CwZ3doWyiVdULKESe7/Gs5OuhFzaDVPCpWdsKdCAGyUuP/+ qRWwKGVpWP0Rrt6MTK24Ibeu3xEZO8c3XOEXH5d9nf6YRqBEIizAecoCr00E9c+6BlRS0AqR OQC3/Mm7rWtco3+WOridqVXkko9AcZ8AiM5nu0F8AqYGKg0y7vkL2LOP8us85L0p57MqIR1u gDnITlTY0x4RYRWJ9+k7led5WsnWlyv84KNzbDqQExTm8itzeZYW9RvbTS63r/+FlcTa9Cz1 5fW3Qm0BsyECvpAD3IPLvX9jDIR0IkF/BQI4T98LQAkYX1M/UWkMpMYsL8tLObiNOWUl4ahb PYi5Yd8zVNYuidXHcwPAUXqGt3Cs+FIhihH30/Oe4jL0/2ZoEnWGOexIFVFpue0jdqJNiIvA F5Wpx+UiT5G8CWYYge5DtHI3m5qAP9UgPuck3N8xCihbsXKX4l8bdHfziaJuowief7igeQs/ WyY9FnZb0tl29dSa7PdDKFWu+B+ZnuIzsO5vWMoN6hMThTl1DxS+jc7ATQRb/8z6AQgAvSkg 5w7dVCSbpP6nXc+i8OBz59aq8kuL3YpxT9RXE/y45IFUVuSc2kuUj683rEEgyD7XCf4QKzOw +XgnJcKFQiACpYAowhF/XNkMPQFspPNM1ChnIL5KWJdTp0DhW+WBeCnyCQ2pzeCzQlS/qfs3 dMLzzm9qCDrrDh/aEegMMZFO+reIgPZnInAcbHj3xUhz8p2dkExRMTnLry8XXkiMu9WpchHy XXWYxXbMnHkSRuT00lUfZAkYpMP7La2UudC/Uw9WqGuAQzTqhvE1kSQe0e11Uc+PqceLRHA2 bq/wz0cGriUrcCrnkzRmzYLoGXQHqRuZazMZn2/pSIMZdDxLbwARAQABwsGNBBgBCAAgFiEE JNYm8lO+nofmzlv0j/S40nFnVScFAlv/zPoCGwwAIQkQj/S40nFnVScWIQQk1ibyU76eh+bO W/SP9LjScWdVJ/g6EACFYk+OBS7pV9KZXncBQYjKqk7Kc+9JoygYnOE2wN41QN9Xl0Rk3wri qO7PYJM28YjK3gMT8glu1qy+Ll1bjBYWXzlsXrF4szSqkJpm1cCxTmDOne5Pu6376dM9hb4K l9giUinI4jNUCbDutlt+Cwh3YuPuDXBAKO8YfDX2arzn/CISJlk0d4lDca4Cv+4yiJpEGd/r BVx2lRMUxeWQTz+1gc9ZtbRgpwoXAne4iw3FlR7pyg3NicvR30YrZ+QOiop8psWM2Fb1PKB9 4vZCGT3j2MwZC50VLfOXC833DBVoLSIoL8PfTcOJOcHRYU9PwKW0wBlJtDVYRZ/CrGFjbp2L eT2mP5fcF86YMv0YGWdFNKDCOqOrOkZVmxai65N9d31k8/O9h1QGuVMqCiOTULy/h+FKpv5q t35tlzA2nxPOX8Qj3KDDqVgQBMYJRghZyj5+N6EKAbUVa9Zq8xT6Ms2zz/y7CPW74G1GlYWP i6D9VoMMi6ICko/CXUZ77OgLtMsy3JtzTRbn/wRySOY2AsMgg0Sw6yJ0wfrVk6XAMoLGjaVt X4iPTvwocEhjvrO4eXCicRBocsIB2qZaIj3mlhk2u4AkSpkKm9cN0KWYFUxlENF4/NKWMK+g fGfsCsS3cXXiZpufZFGr+GoHwiELqfLEAQ9AhlrHGCKcgVgTOI6NHg== Message-ID: <45b69f61-3a1f-be1f-ece9-4d1b79389353@linaro.org> Date: Mon, 9 Dec 2019 20:29:12 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.1 MIME-Version: 1.0 In-Reply-To: <2beb4758-d66d-e8d9-a64d-86ce361aa57f@linaro.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/12/2019 13:03, Daniel Lezcano wrote: > On 09/12/2019 10:54, Martin Kepplinger wrote: >> >> >> 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). By the way, how many CPUs are injecting idle cycle when the mitigation happens ? >> You describe the "config values" in question in the documentation, but >> I'm not sure what's the correct way to change them. > > That is difficult to say without knowing the board behavior. Are you > able to profile the temperature with the load? How fast the temperature > increases? The aggressive behavior of the cooling device will depend on > the governor which depends on the slope of the temperature increase and > the sampling. > > Can you give the pointer to the git tree with the DT definition of your > board? > > You can try by changing the idle duration to 10ms instead of the default > 4ms. > > You can also change the cooling states in the DT <&state 20 70>, so it > will begin to mitigate at state 20. But I wouldn't recommend that. > > Do you have the energy power model, so we can try with the IPA governor? > > > -- Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog