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[109.252.192.57]) by smtp.googlemail.com with ESMTPSA id c142sm3572365lfg.309.2020.12.24.04.14.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 24 Dec 2020 04:14:02 -0800 (PST) Subject: Re: [PATCH v2 19/48] opp: Fix adding OPP entries in a wrong order if rate is unavailable To: Viresh Kumar Cc: Thierry Reding , Jonathan Hunter , Mark Brown , Liam Girdwood , Ulf Hansson , Mauro Carvalho Chehab , Rob Herring , Peter Geis , Nicolas Chauvet , Krzysztof Kozlowski , "Rafael J. Wysocki" , Kevin Hilman , Peter De Schrijver , Viresh Kumar , Stephen Boyd , Michael Turquette , devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org, linux-tegra@vger.kernel.org, linux-clk@vger.kernel.org References: <20201217180638.22748-1-digetx@gmail.com> <20201217180638.22748-20-digetx@gmail.com> <20201222091255.wentz5hyt726qezg@vireshk-i7> <20201223043443.rklw5er6hck3gl4y@vireshk-i7> <7688d6b9-52a2-d30f-123f-43c01e03b968@gmail.com> <20201224062826.frppxddfinjomfui@vireshk-i7> From: Dmitry Osipenko Message-ID: Date: Thu, 24 Dec 2020 15:14:01 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.2 MIME-Version: 1.0 In-Reply-To: <20201224062826.frppxddfinjomfui@vireshk-i7> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org 24.12.2020 09:28, Viresh Kumar пишет: > On 23-12-20, 23:36, Dmitry Osipenko wrote: >> 23.12.2020 07:34, Viresh Kumar пишет: >>> On 22-12-20, 22:19, Dmitry Osipenko wrote: >>>> 22.12.2020 12:12, Viresh Kumar пишет: >>>>> rate will be 0 for both the OPPs here if rate_not_available is true and so this >>>>> change shouldn't be required. >>>> >>>> The rate_not_available is negated in the condition. This change is >>>> required because both rates are 0 and then we should proceed to the >>>> levels comparison. >>> >>> Won't that happen without this patch ? >> >> No > > This is how the code looks like currently: > > int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2) > { > if (opp1->rate != opp2->rate) > return opp1->rate < opp2->rate ? -1 : 1; > if (opp1->bandwidth && opp2->bandwidth && > opp1->bandwidth[0].peak != opp2->bandwidth[0].peak) > return opp1->bandwidth[0].peak < opp2->bandwidth[0].peak ? -1 : 1; > if (opp1->level != opp2->level) > return opp1->level < opp2->level ? -1 : 1; > return 0; > } > > Lets consider the case you are focussing on, where rate is 0 for both the OPPs, > bandwidth isn't there and we want to run the level comparison here. > > Since both the rates are 0, (opp1->rate != opp2->rate) will fail and so we will > move to bandwidth check which will fail too. And so we will get to the level > comparison. > > What am I missing here ? I am sure there is something for sure as you won't have > missed this.. > Ah, you're right. It was me who was missing something as I see now, after taking a closer look and trying to implement yours suggestion, my bad. I'll improve this patch in the next revision, thanks! 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[109.252.192.57]) by smtp.googlemail.com with ESMTPSA id c142sm3572365lfg.309.2020.12.24.04.14.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 24 Dec 2020 04:14:02 -0800 (PST) Subject: Re: [PATCH v2 19/48] opp: Fix adding OPP entries in a wrong order if rate is unavailable To: Viresh Kumar References: <20201217180638.22748-1-digetx@gmail.com> <20201217180638.22748-20-digetx@gmail.com> <20201222091255.wentz5hyt726qezg@vireshk-i7> <20201223043443.rklw5er6hck3gl4y@vireshk-i7> <7688d6b9-52a2-d30f-123f-43c01e03b968@gmail.com> <20201224062826.frppxddfinjomfui@vireshk-i7> From: Dmitry Osipenko Message-ID: Date: Thu, 24 Dec 2020 15:14:01 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.2 MIME-Version: 1.0 In-Reply-To: <20201224062826.frppxddfinjomfui@vireshk-i7> Content-Language: en-US X-BeenThere: driverdev-devel@linuxdriverproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Driver Project Developer List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ulf Hansson , Michael Turquette , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Thierry Reding , linux-clk@vger.kernel.org, devel@driverdev.osuosl.org, Kevin Hilman , Nicolas Chauvet , Viresh Kumar , Krzysztof Kozlowski , Jonathan Hunter , linux-media@vger.kernel.org, devicetree@vger.kernel.org, Rob Herring , linux-tegra@vger.kernel.org, Mauro Carvalho Chehab , Stephen Boyd , Peter De Schrijver , "Rafael J. Wysocki" , Liam Girdwood , Mark Brown , Peter Geis Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" MjQuMTIuMjAyMCAwOToyOCwgVmlyZXNoIEt1bWFyINC/0LjRiNC10YI6Cj4gT24gMjMtMTItMjAs IDIzOjM2LCBEbWl0cnkgT3NpcGVua28gd3JvdGU6Cj4+IDIzLjEyLjIwMjAgMDc6MzQsIFZpcmVz aCBLdW1hciDQv9C40YjQtdGCOgo+Pj4gT24gMjItMTItMjAsIDIyOjE5LCBEbWl0cnkgT3NpcGVu a28gd3JvdGU6Cj4+Pj4gMjIuMTIuMjAyMCAxMjoxMiwgVmlyZXNoIEt1bWFyINC/0LjRiNC10YI6 Cj4+Pj4+IHJhdGUgd2lsbCBiZSAwIGZvciBib3RoIHRoZSBPUFBzIGhlcmUgaWYgcmF0ZV9ub3Rf YXZhaWxhYmxlIGlzIHRydWUgYW5kIHNvIHRoaXMKPj4+Pj4gY2hhbmdlIHNob3VsZG4ndCBiZSBy ZXF1aXJlZC4KPj4+Pgo+Pj4+IFRoZSByYXRlX25vdF9hdmFpbGFibGUgaXMgbmVnYXRlZCBpbiB0 aGUgY29uZGl0aW9uLiBUaGlzIGNoYW5nZSBpcwo+Pj4+IHJlcXVpcmVkIGJlY2F1c2UgYm90aCBy YXRlcyBhcmUgMCBhbmQgdGhlbiB3ZSBzaG91bGQgcHJvY2VlZCB0byB0aGUKPj4+PiBsZXZlbHMg Y29tcGFyaXNvbi4KPj4+Cj4+PiBXb24ndCB0aGF0IGhhcHBlbiB3aXRob3V0IHRoaXMgcGF0Y2gg Pwo+Pgo+PiBObwo+IAo+IFRoaXMgaXMgaG93IHRoZSBjb2RlIGxvb2tzIGxpa2UgY3VycmVudGx5 Ogo+IAo+IGludCBfb3BwX2NvbXBhcmVfa2V5KHN0cnVjdCBkZXZfcG1fb3BwICpvcHAxLCBzdHJ1 Y3QgZGV2X3BtX29wcCAqb3BwMikKPiB7Cj4gCWlmIChvcHAxLT5yYXRlICE9IG9wcDItPnJhdGUp Cj4gCQlyZXR1cm4gb3BwMS0+cmF0ZSA8IG9wcDItPnJhdGUgPyAtMSA6IDE7Cj4gCWlmIChvcHAx LT5iYW5kd2lkdGggJiYgb3BwMi0+YmFuZHdpZHRoICYmCj4gCSAgICBvcHAxLT5iYW5kd2lkdGhb MF0ucGVhayAhPSBvcHAyLT5iYW5kd2lkdGhbMF0ucGVhaykKPiAJCXJldHVybiBvcHAxLT5iYW5k d2lkdGhbMF0ucGVhayA8IG9wcDItPmJhbmR3aWR0aFswXS5wZWFrID8gLTEgOiAxOwo+IAlpZiAo b3BwMS0+bGV2ZWwgIT0gb3BwMi0+bGV2ZWwpCj4gCQlyZXR1cm4gb3BwMS0+bGV2ZWwgPCBvcHAy LT5sZXZlbCA/IC0xIDogMTsKPiAJcmV0dXJuIDA7Cj4gfQo+IAo+IExldHMgY29uc2lkZXIgdGhl IGNhc2UgeW91IGFyZSBmb2N1c3Npbmcgb24sIHdoZXJlIHJhdGUgaXMgMCBmb3IgYm90aCB0aGUg T1BQcywKPiBiYW5kd2lkdGggaXNuJ3QgdGhlcmUgYW5kIHdlIHdhbnQgdG8gcnVuIHRoZSBsZXZl bCBjb21wYXJpc29uIGhlcmUuCj4gCj4gU2luY2UgYm90aCB0aGUgcmF0ZXMgYXJlIDAsIChvcHAx LT5yYXRlICE9IG9wcDItPnJhdGUpIHdpbGwgZmFpbCBhbmQgc28gd2Ugd2lsbAo+IG1vdmUgdG8g YmFuZHdpZHRoIGNoZWNrIHdoaWNoIHdpbGwgZmFpbCB0b28uIEFuZCBzbyB3ZSB3aWxsIGdldCB0 byB0aGUgbGV2ZWwKPiBjb21wYXJpc29uLgo+IAo+IFdoYXQgYW0gSSBtaXNzaW5nIGhlcmUgPyBJ IGFtIHN1cmUgdGhlcmUgaXMgc29tZXRoaW5nIGZvciBzdXJlIGFzIHlvdSB3b24ndCBoYXZlCj4g bWlzc2VkIHRoaXMuLgo+IAoKQWgsIHlvdSdyZSByaWdodC4gSXQgd2FzIG1lIHdobyB3YXMgbWlz c2luZyBzb21ldGhpbmcgYXMgSSBzZWUgbm93LAphZnRlciB0YWtpbmcgYSBjbG9zZXIgbG9vayBh bmQgdHJ5aW5nIHRvIGltcGxlbWVudCB5b3VycyBzdWdnZXN0aW9uLCBteQpiYWQuIEknbGwgaW1w cm92ZSB0aGlzIHBhdGNoIGluIHRoZSBuZXh0IHJldmlzaW9uLCB0aGFua3MhCl9fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRldmVsIG1haWxpbmcgbGlzdApk ZXZlbEBsaW51eGRyaXZlcnByb2plY3Qub3JnCmh0dHA6Ly9kcml2ZXJkZXYubGludXhkcml2ZXJw cm9qZWN0Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaXZlcmRldi1kZXZlbAo= 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=-3.6 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 437D7C433E0 for ; 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[109.252.192.57]) by smtp.googlemail.com with ESMTPSA id c142sm3572365lfg.309.2020.12.24.04.14.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 24 Dec 2020 04:14:02 -0800 (PST) Subject: Re: [PATCH v2 19/48] opp: Fix adding OPP entries in a wrong order if rate is unavailable To: Viresh Kumar References: <20201217180638.22748-1-digetx@gmail.com> <20201217180638.22748-20-digetx@gmail.com> <20201222091255.wentz5hyt726qezg@vireshk-i7> <20201223043443.rklw5er6hck3gl4y@vireshk-i7> <7688d6b9-52a2-d30f-123f-43c01e03b968@gmail.com> <20201224062826.frppxddfinjomfui@vireshk-i7> From: Dmitry Osipenko Message-ID: Date: Thu, 24 Dec 2020 15:14:01 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.2 MIME-Version: 1.0 In-Reply-To: <20201224062826.frppxddfinjomfui@vireshk-i7> Content-Language: en-US X-Mailman-Approved-At: Fri, 25 Dec 2020 09:42:09 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ulf Hansson , Michael Turquette , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Thierry Reding , linux-clk@vger.kernel.org, devel@driverdev.osuosl.org, Kevin Hilman , Nicolas Chauvet , Viresh Kumar , Krzysztof Kozlowski , Jonathan Hunter , linux-media@vger.kernel.org, devicetree@vger.kernel.org, Rob Herring , linux-tegra@vger.kernel.org, Mauro Carvalho Chehab , Stephen Boyd , Peter De Schrijver , "Rafael J. Wysocki" , Liam Girdwood , Mark Brown , Peter Geis Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" MjQuMTIuMjAyMCAwOToyOCwgVmlyZXNoIEt1bWFyINC/0LjRiNC10YI6Cj4gT24gMjMtMTItMjAs IDIzOjM2LCBEbWl0cnkgT3NpcGVua28gd3JvdGU6Cj4+IDIzLjEyLjIwMjAgMDc6MzQsIFZpcmVz aCBLdW1hciDQv9C40YjQtdGCOgo+Pj4gT24gMjItMTItMjAsIDIyOjE5LCBEbWl0cnkgT3NpcGVu a28gd3JvdGU6Cj4+Pj4gMjIuMTIuMjAyMCAxMjoxMiwgVmlyZXNoIEt1bWFyINC/0LjRiNC10YI6 Cj4+Pj4+IHJhdGUgd2lsbCBiZSAwIGZvciBib3RoIHRoZSBPUFBzIGhlcmUgaWYgcmF0ZV9ub3Rf YXZhaWxhYmxlIGlzIHRydWUgYW5kIHNvIHRoaXMKPj4+Pj4gY2hhbmdlIHNob3VsZG4ndCBiZSBy ZXF1aXJlZC4KPj4+Pgo+Pj4+IFRoZSByYXRlX25vdF9hdmFpbGFibGUgaXMgbmVnYXRlZCBpbiB0 aGUgY29uZGl0aW9uLiBUaGlzIGNoYW5nZSBpcwo+Pj4+IHJlcXVpcmVkIGJlY2F1c2UgYm90aCBy YXRlcyBhcmUgMCBhbmQgdGhlbiB3ZSBzaG91bGQgcHJvY2VlZCB0byB0aGUKPj4+PiBsZXZlbHMg Y29tcGFyaXNvbi4KPj4+Cj4+PiBXb24ndCB0aGF0IGhhcHBlbiB3aXRob3V0IHRoaXMgcGF0Y2gg Pwo+Pgo+PiBObwo+IAo+IFRoaXMgaXMgaG93IHRoZSBjb2RlIGxvb2tzIGxpa2UgY3VycmVudGx5 Ogo+IAo+IGludCBfb3BwX2NvbXBhcmVfa2V5KHN0cnVjdCBkZXZfcG1fb3BwICpvcHAxLCBzdHJ1 Y3QgZGV2X3BtX29wcCAqb3BwMikKPiB7Cj4gCWlmIChvcHAxLT5yYXRlICE9IG9wcDItPnJhdGUp Cj4gCQlyZXR1cm4gb3BwMS0+cmF0ZSA8IG9wcDItPnJhdGUgPyAtMSA6IDE7Cj4gCWlmIChvcHAx LT5iYW5kd2lkdGggJiYgb3BwMi0+YmFuZHdpZHRoICYmCj4gCSAgICBvcHAxLT5iYW5kd2lkdGhb MF0ucGVhayAhPSBvcHAyLT5iYW5kd2lkdGhbMF0ucGVhaykKPiAJCXJldHVybiBvcHAxLT5iYW5k d2lkdGhbMF0ucGVhayA8IG9wcDItPmJhbmR3aWR0aFswXS5wZWFrID8gLTEgOiAxOwo+IAlpZiAo b3BwMS0+bGV2ZWwgIT0gb3BwMi0+bGV2ZWwpCj4gCQlyZXR1cm4gb3BwMS0+bGV2ZWwgPCBvcHAy LT5sZXZlbCA/IC0xIDogMTsKPiAJcmV0dXJuIDA7Cj4gfQo+IAo+IExldHMgY29uc2lkZXIgdGhl IGNhc2UgeW91IGFyZSBmb2N1c3Npbmcgb24sIHdoZXJlIHJhdGUgaXMgMCBmb3IgYm90aCB0aGUg T1BQcywKPiBiYW5kd2lkdGggaXNuJ3QgdGhlcmUgYW5kIHdlIHdhbnQgdG8gcnVuIHRoZSBsZXZl bCBjb21wYXJpc29uIGhlcmUuCj4gCj4gU2luY2UgYm90aCB0aGUgcmF0ZXMgYXJlIDAsIChvcHAx LT5yYXRlICE9IG9wcDItPnJhdGUpIHdpbGwgZmFpbCBhbmQgc28gd2Ugd2lsbAo+IG1vdmUgdG8g YmFuZHdpZHRoIGNoZWNrIHdoaWNoIHdpbGwgZmFpbCB0b28uIEFuZCBzbyB3ZSB3aWxsIGdldCB0 byB0aGUgbGV2ZWwKPiBjb21wYXJpc29uLgo+IAo+IFdoYXQgYW0gSSBtaXNzaW5nIGhlcmUgPyBJ IGFtIHN1cmUgdGhlcmUgaXMgc29tZXRoaW5nIGZvciBzdXJlIGFzIHlvdSB3b24ndCBoYXZlCj4g bWlzc2VkIHRoaXMuLgo+IAoKQWgsIHlvdSdyZSByaWdodC4gSXQgd2FzIG1lIHdobyB3YXMgbWlz c2luZyBzb21ldGhpbmcgYXMgSSBzZWUgbm93LAphZnRlciB0YWtpbmcgYSBjbG9zZXIgbG9vayBh bmQgdHJ5aW5nIHRvIGltcGxlbWVudCB5b3VycyBzdWdnZXN0aW9uLCBteQpiYWQuIEknbGwgaW1w cm92ZSB0aGlzIHBhdGNoIGluIHRoZSBuZXh0IHJldmlzaW9uLCB0aGFua3MhCl9fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxp c3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNr dG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbAo=