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[71.163.245.5]) by smtp.gmail.com with ESMTPSA id w19sm2033209qkw.49.2021.11.08.13.31.44 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 08 Nov 2021 13:31:44 -0800 (PST) Subject: Re: [PATCH v3 0/5] Refactor thermal pressure update to avoid code duplication To: Steev Klimaszewski , Lukasz Luba Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, sudeep.holla@arm.com, will@kernel.org, catalin.marinas@arm.com, linux@armlinux.org.uk, gregkh@linuxfoundation.org, rafael@kernel.org, viresh.kumar@linaro.org, amitk@kernel.org, daniel.lezcano@linaro.org, amit.kachhap@gmail.com, bjorn.andersson@linaro.org, agross@kernel.org References: <20211103161020.26714-1-lukasz.luba@arm.com> <3cba148a-7077-7b6b-f131-dc65045aa348@arm.com> <9d533b6e-a81c-e823-fa6f-61fdea92fa65@kali.org> <74ea027b-b213-42b8-0f7d-275f3b84712e@linaro.org> <74603569-2ff1-999e-9618-79261fdb0ee4@kali.org> <59054c90-c1cd-85bf-406e-579df668d7b4@linaro.org> From: Thara Gopinath Message-ID: <2c54dbbd-2ecb-fb76-fa9f-9752f429c20e@linaro.org> Date: Mon, 8 Nov 2021 16:31:44 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On 11/8/21 10:22 AM, Steev Klimaszewski wrote: > >> Hi Steev, >> >> So this depends on the cpufreq governor you are using. By-default arm >> systems have sched-util governor enabled. This means you will scale up >> to boost depending on cpu load and not always. If you want to ensure >> you are always hitting boost frequency, you should enable performance >> governor for cpufreq and try. >> >> Also since the defconfig has by default CPU_FREQ_STAT enabled, you >> should be able to get statistics out of cpufreq to see the time spent >> by a cpu in each frequency. I think cpufreq-info -s should give you >> this info. If not, you can explicitly get it for each cpu from >> >> cat /sys/devices/system/cpu/cpu/cpufreq/stats/time_in_state >> >> Regarding temperature, if you have applied all the patches in the >> sdm845 LMh series and have LMh enabled, cpu throttling starts around >> 95 degree C. >> > Hi Thara, > > Indeed, I ended up finding the time_in_state when I was doing more > digging after my last mail.  I do have the sdm845 LMh series and LMh > enabled, however I don't think I've ever seen my system go above 90C here. > > So a quick look, and... we are simply almost never getting the 2.95GHz > at all, regardless of workload.  I saw Lukasz response as well about the > math possibly being wrong, but I haven't had a chance. > > Regarding the time in state - I went with policy4 instead of per cpu > (for brevity sake) and it's here: > > c630:~$ cat /sys/devices/system/cpu/cpufreq/policy4/stats/time_in_state > 825600 225037 > 902400 92 > 979200 205 > 1056000 96 > 1209600 902 > 1286400 386 > 1363200 396 > 1459200 217 > 1536000 101 > 1612800 75 > 1689600 95 > 1766400 130 > 1843200 255 > 1920000 318 > 1996800 92 > 2092800 87 > 2169600 66 > 2246400 60 > 2323200 58 > 2400000 54 > 2476800 47 > 2553600 50 > 2649600 69 > 2745600 58 > 2841600 54619 > 2956800 5 > > So we spend *very* little time in 2.96GHz and this is after almost 14 > hours of uptime on the C630.  By comparison, on a Pinebook Pro where > I've added in 2GHz as a boost frequency : Hi Steev, IIUC, PineBook Pro has Rockchip RK3399 which has 2 Cortex A-72 and 4 Cortex A-52 where as C630 has Qualcomm sdm845 which has 4 Cortex A-75 and 4 Cortex A-55. Task placements and subsequently cpu load will be different for both the platforms. With the same workload, I will expect Rockchip to system to be more loaded than sdm845. Having said that, what cpu-freq governor are you using on both the systems. > > pinebook-pro:~$ cat > /sys/devices/system/cpu/cpufreq/policy4/stats/time_in_state > 408000 16084466 > 600000 27212 > 816000 32487 > 1008000 11331 > 1200000 13268 > 1416000 75078 > 1608000 18392 > 1800000 207266 > 2016000 648612 > > With the Pinebook Pro, which doesn't even come close to getting to 95C, > we spend a lot more time in 2GHz. > > -- steev > -- Warm Regards Thara (She/Her/Hers) 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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8F04DC433EF for ; Mon, 8 Nov 2021 21:32:57 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 50E6C613B3 for ; Mon, 8 Nov 2021 21:32:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 50E6C613B3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:Cc:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=y8GBJL32xck2A05syCQmRAe+NulJ0nj0kxk0J2O3UJs=; b=Y8CtR2zdTIJm5scuIVbYnFqm8p W21UvjDiRl7TtDyGTADQ49IuBYn7/Uc/XKsm2yHoJng0DGCjQs55zdD9RzkwELVopEijZp1r6w+cm f+FT8eGR0FhA03694UYKVxRKfkY/xivURP1d30sO4UIw0y/aiGkuvs/bkLggXfiyR4ySwkgwF6yhC 1wmNletvjVTMuA6gxjvqSZecK6iMhG+WuNEPQbLxVOUgpGJCvw2N2LAw5b6M1PGLNoKw/M7o3VqAw AYJAaJLVbiUoLfSr2cimE6So8u1VhJmm0TvIoFcklgg1ho0uAxZtNnpv3yEMXM9Gxq5C788w3axtd a+5anMqw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mkCF4-00HUzk-Kf; Mon, 08 Nov 2021 21:31:50 +0000 Received: from mail-qk1-x734.google.com ([2607:f8b0:4864:20::734]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mkCF0-00HUyf-RR for linux-arm-kernel@lists.infradead.org; Mon, 08 Nov 2021 21:31:48 +0000 Received: by mail-qk1-x734.google.com with SMTP id bq14so16908886qkb.1 for ; Mon, 08 Nov 2021 13:31:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=s5tMJEcudqXsuhh1EA1Zp+nQ88xePj20Hc2KkNUWDsU=; b=Ae8kkXgDrDFP/odEz71AJTjhaFNsH4u+OGlS3nZDJX5cldhY6nkQcUO3QoqEnqCzFa BQht6SE35qyia0jMOtiC2IebnWiVKLTwQ5UQI9+/YyOERDE5mEaV/BGgEJt4haOdcGt4 QTxe+hsOLit51eifZGmv/JTxbGLaMOVFw3YcaZ4j36SZirauQ/NMEidMBHYWXxJMq87H GIsHQ3fylNSRLGhvcHnIg7MU3g8AP6TFXK7ijyiBcFvAMeibXy9j1UNKFUWe5WBj+Duc oifkKHgZeOaumPR1+i6Z///GQfUn/sybjkp04JEGf93BdNljICpBsVV1SGIrCv92sZOC J/xA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=s5tMJEcudqXsuhh1EA1Zp+nQ88xePj20Hc2KkNUWDsU=; b=jxffZXkCXoxq7O1vzRkz++1pHAvbSIhRL9Hiz6erJhPIFqIwDGF+Ps4glCuplBmZk8 3Ov/t0hGbpmiir3KmARAbHMH6pnY0TS6gIZXY2pxYWtCnin/+5AMxmoauoEx/sp7fU9y mVrUoLsV99hGcUT0+cjYRmOtFdi6PGfOYNyDD6DI6Gtw3z+11fsGiqJmP1Ys9ewU7p+c mxX8DHFC28YQ3faK7G8s2o6fjwTW80ZrBiIr9LrJmm59IG3XcVcMpY0TbMmZkhGwrm8e MIqQkjjokiCtTXqG9PY7Zb3uh9MgP01gawv3Bsj2Zuevk3uTNAIK+niB7VSBdxiSLX1y MeMw== X-Gm-Message-State: AOAM532gWrGcSx+QyYQY/ZflsppKOt1x1dE87dBH3RqPUhRAKnsMUaxm LjBgi78eAdb0xvXyHoj8cWYxag== X-Google-Smtp-Source: ABdhPJxLupCh0ogEwzGIg4W2cCTY25wrbd/qb1d2CFGSDvrqEWvp4py1sjwaDa/6e8fqENI6AyZOsA== X-Received: by 2002:a05:620a:2a14:: with SMTP id o20mr1830012qkp.221.1636407105343; Mon, 08 Nov 2021 13:31:45 -0800 (PST) Received: from [192.168.1.93] (pool-71-163-245-5.washdc.fios.verizon.net. [71.163.245.5]) by smtp.gmail.com with ESMTPSA id w19sm2033209qkw.49.2021.11.08.13.31.44 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 08 Nov 2021 13:31:44 -0800 (PST) Subject: Re: [PATCH v3 0/5] Refactor thermal pressure update to avoid code duplication To: Steev Klimaszewski , Lukasz Luba Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, sudeep.holla@arm.com, will@kernel.org, catalin.marinas@arm.com, linux@armlinux.org.uk, gregkh@linuxfoundation.org, rafael@kernel.org, viresh.kumar@linaro.org, amitk@kernel.org, daniel.lezcano@linaro.org, amit.kachhap@gmail.com, bjorn.andersson@linaro.org, agross@kernel.org References: <20211103161020.26714-1-lukasz.luba@arm.com> <3cba148a-7077-7b6b-f131-dc65045aa348@arm.com> <9d533b6e-a81c-e823-fa6f-61fdea92fa65@kali.org> <74ea027b-b213-42b8-0f7d-275f3b84712e@linaro.org> <74603569-2ff1-999e-9618-79261fdb0ee4@kali.org> <59054c90-c1cd-85bf-406e-579df668d7b4@linaro.org> From: Thara Gopinath Message-ID: <2c54dbbd-2ecb-fb76-fa9f-9752f429c20e@linaro.org> Date: Mon, 8 Nov 2021 16:31:44 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211108_133146_919264_69FFD5A5 X-CRM114-Status: GOOD ( 24.28 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org CgpPbiAxMS84LzIxIDEwOjIyIEFNLCBTdGVldiBLbGltYXN6ZXdza2kgd3JvdGU6Cj4gCj4+IEhp IFN0ZWV2LAo+Pgo+PiBTbyB0aGlzIGRlcGVuZHMgb24gdGhlIGNwdWZyZXEgZ292ZXJub3IgeW91 IGFyZSB1c2luZy4gQnktZGVmYXVsdCBhcm0gCj4+IHN5c3RlbXMgaGF2ZSBzY2hlZC11dGlsIGdv dmVybm9yIGVuYWJsZWQuIFRoaXMgbWVhbnMgeW91IHdpbGwgc2NhbGUgdXAgCj4+IHRvIGJvb3N0 IGRlcGVuZGluZyBvbiBjcHUgbG9hZCBhbmQgbm90IGFsd2F5cy4gSWYgeW91IHdhbnQgdG8gZW5z dXJlIAo+PiB5b3UgYXJlIGFsd2F5cyBoaXR0aW5nIGJvb3N0IGZyZXF1ZW5jeSwgeW91IHNob3Vs ZCBlbmFibGUgcGVyZm9ybWFuY2UgCj4+IGdvdmVybm9yIGZvciBjcHVmcmVxIGFuZCB0cnkuCj4+ Cj4+IEFsc28gc2luY2UgdGhlIGRlZmNvbmZpZyBoYXMgYnkgZGVmYXVsdCBDUFVfRlJFUV9TVEFU IGVuYWJsZWQsIHlvdSAKPj4gc2hvdWxkIGJlIGFibGUgdG8gZ2V0IHN0YXRpc3RpY3Mgb3V0IG9m IGNwdWZyZXEgdG8gc2VlIHRoZSB0aW1lIHNwZW50IAo+PiBieSBhIGNwdSBpbiBlYWNoIGZyZXF1 ZW5jeS4gSSB0aGluayBjcHVmcmVxLWluZm8gLXMgc2hvdWxkIGdpdmUgeW91IAo+PiB0aGlzIGlu Zm8uIElmIG5vdCwgeW91IGNhbiBleHBsaWNpdGx5IGdldCBpdCBmb3IgZWFjaCBjcHUgZnJvbQo+ Pgo+PiBjYXQgL3N5cy9kZXZpY2VzL3N5c3RlbS9jcHUvY3B1PFg+L2NwdWZyZXEvc3RhdHMvdGlt ZV9pbl9zdGF0ZQo+Pgo+PiBSZWdhcmRpbmcgdGVtcGVyYXR1cmUsIGlmIHlvdSBoYXZlIGFwcGxp ZWQgYWxsIHRoZSBwYXRjaGVzIGluIHRoZSAKPj4gc2RtODQ1IExNaCBzZXJpZXMgYW5kIGhhdmUg TE1oIGVuYWJsZWQsIGNwdSB0aHJvdHRsaW5nIHN0YXJ0cyBhcm91bmQgCj4+IDk1IGRlZ3JlZSBD Lgo+Pgo+IEhpIFRoYXJhLAo+IAo+IEluZGVlZCwgSSBlbmRlZCB1cCBmaW5kaW5nIHRoZSB0aW1l X2luX3N0YXRlIHdoZW4gSSB3YXMgZG9pbmcgbW9yZSAKPiBkaWdnaW5nIGFmdGVyIG15IGxhc3Qg bWFpbC7CoCBJIGRvIGhhdmUgdGhlIHNkbTg0NSBMTWggc2VyaWVzIGFuZCBMTWggCj4gZW5hYmxl ZCwgaG93ZXZlciBJIGRvbid0IHRoaW5rIEkndmUgZXZlciBzZWVuIG15IHN5c3RlbSBnbyBhYm92 ZSA5MEMgaGVyZS4KPiAKPiBTbyBhIHF1aWNrIGxvb2ssIGFuZC4uLiB3ZSBhcmUgc2ltcGx5IGFs bW9zdCBuZXZlciBnZXR0aW5nIHRoZSAyLjk1R0h6IAo+IGF0IGFsbCwgcmVnYXJkbGVzcyBvZiB3 b3JrbG9hZC7CoCBJIHNhdyBMdWthc3ogcmVzcG9uc2UgYXMgd2VsbCBhYm91dCB0aGUgCj4gbWF0 aCBwb3NzaWJseSBiZWluZyB3cm9uZywgYnV0IEkgaGF2ZW4ndCBoYWQgYSBjaGFuY2UuCj4gCj4g UmVnYXJkaW5nIHRoZSB0aW1lIGluIHN0YXRlIC0gSSB3ZW50IHdpdGggcG9saWN5NCBpbnN0ZWFk IG9mIHBlciBjcHUgCj4gKGZvciBicmV2aXR5IHNha2UpIGFuZCBpdCdzIGhlcmU6Cj4gCj4gYzYz MDp+JCBjYXQgL3N5cy9kZXZpY2VzL3N5c3RlbS9jcHUvY3B1ZnJlcS9wb2xpY3k0L3N0YXRzL3Rp bWVfaW5fc3RhdGUKPiA4MjU2MDAgMjI1MDM3Cj4gOTAyNDAwIDkyCj4gOTc5MjAwIDIwNQo+IDEw NTYwMDAgOTYKPiAxMjA5NjAwIDkwMgo+IDEyODY0MDAgMzg2Cj4gMTM2MzIwMCAzOTYKPiAxNDU5 MjAwIDIxNwo+IDE1MzYwMDAgMTAxCj4gMTYxMjgwMCA3NQo+IDE2ODk2MDAgOTUKPiAxNzY2NDAw IDEzMAo+IDE4NDMyMDAgMjU1Cj4gMTkyMDAwMCAzMTgKPiAxOTk2ODAwIDkyCj4gMjA5MjgwMCA4 Nwo+IDIxNjk2MDAgNjYKPiAyMjQ2NDAwIDYwCj4gMjMyMzIwMCA1OAo+IDI0MDAwMDAgNTQKPiAy NDc2ODAwIDQ3Cj4gMjU1MzYwMCA1MAo+IDI2NDk2MDAgNjkKPiAyNzQ1NjAwIDU4Cj4gMjg0MTYw MCA1NDYxOQo+IDI5NTY4MDAgNQo+IAo+IFNvIHdlIHNwZW5kICp2ZXJ5KiBsaXR0bGUgdGltZSBp biAyLjk2R0h6IGFuZCB0aGlzIGlzIGFmdGVyIGFsbW9zdCAxNCAKPiBob3VycyBvZiB1cHRpbWUg b24gdGhlIEM2MzAuwqAgQnkgY29tcGFyaXNvbiwgb24gYSBQaW5lYm9vayBQcm8gd2hlcmUgCj4g SSd2ZSBhZGRlZCBpbiAyR0h6IGFzIGEgYm9vc3QgZnJlcXVlbmN5IDoKCkhpIFN0ZWV2LAoKSUlV QywgUGluZUJvb2sgUHJvIGhhcyBSb2NrY2hpcCBSSzMzOTkgd2hpY2ggaGFzIDIgQ29ydGV4IEEt NzIgYW5kIDQgCkNvcnRleCBBLTUyIHdoZXJlIGFzIEM2MzAgaGFzIFF1YWxjb21tIHNkbTg0NSB3 aGljaCBoYXMgNCBDb3J0ZXggQS03NSAKYW5kIDQgQ29ydGV4IEEtNTUuIFRhc2sgcGxhY2VtZW50 cyBhbmQgc3Vic2VxdWVudGx5IGNwdSBsb2FkIHdpbGwgYmUgCmRpZmZlcmVudCBmb3IgYm90aCB0 aGUgcGxhdGZvcm1zLiBXaXRoIHRoZSBzYW1lIHdvcmtsb2FkLCBJIHdpbGwgZXhwZWN0IApSb2Nr Y2hpcCB0byBzeXN0ZW0gdG8gYmUgbW9yZSBsb2FkZWQgdGhhbiBzZG04NDUuIEhhdmluZyBzYWlk IHRoYXQsIHdoYXQgCmNwdS1mcmVxIGdvdmVybm9yIGFyZSB5b3UgdXNpbmcgb24gYm90aCB0aGUg c3lzdGVtcy4KCgo+IAo+IHBpbmVib29rLXBybzp+JCBjYXQgCj4gL3N5cy9kZXZpY2VzL3N5c3Rl bS9jcHUvY3B1ZnJlcS9wb2xpY3k0L3N0YXRzL3RpbWVfaW5fc3RhdGUKPiA0MDgwMDAgMTYwODQ0 NjYKPiA2MDAwMDAgMjcyMTIKPiA4MTYwMDAgMzI0ODcKPiAxMDA4MDAwIDExMzMxCj4gMTIwMDAw MCAxMzI2OAo+IDE0MTYwMDAgNzUwNzgKPiAxNjA4MDAwIDE4MzkyCj4gMTgwMDAwMCAyMDcyNjYK PiAyMDE2MDAwIDY0ODYxMgo+IAo+IFdpdGggdGhlIFBpbmVib29rIFBybywgd2hpY2ggZG9lc24n dCBldmVuIGNvbWUgY2xvc2UgdG8gZ2V0dGluZyB0byA5NUMsIAo+IHdlIHNwZW5kIGEgbG90IG1v cmUgdGltZSBpbiAyR0h6Lgo+IAo+IC0tIHN0ZWV2Cj4gCgotLSAKV2FybSBSZWdhcmRzClRoYXJh IChTaGUvSGVyL0hlcnMpCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxp c3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0 aW5mby9saW51eC1hcm0ta2VybmVsCg==