From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Lezcano Subject: Re: [PATCH v12 2/4] PM / Domains: Add support for CPU devices to genpd Date: Thu, 21 Mar 2019 10:54:15 +0100 Message-ID: <3ceca6d2-c780-49e4-5c90-566a7e8433ce@linaro.org> References: <20190227195836.24739-1-ulf.hansson@linaro.org> <20190227195836.24739-3-ulf.hansson@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190227195836.24739-3-ulf.hansson@linaro.org> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: Ulf Hansson , "Rafael J . Wysocki" , linux-pm@vger.kernel.org Cc: Frederic Weisbecker , Thomas Gleixner , Sudeep Holla , Lorenzo Pieralisi , Mark Rutland , "Raju P . L . S . S . S . N" , Stephen Boyd , Tony Lindgren , Kevin Hilman , Lina Iyer , Viresh Kumar , Vincent Guittot , Geert Uytterhoeven , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-arm-msm@vger.kernel.org On 27/02/2019 20:58, Ulf Hansson wrote: > To enable a device belonging to a CPU to be attached to a PM domain managed > by genpd, let's do a few changes to it, as to make it convenient to manage > the specifics around CPUs. > > To be able to quickly find out what CPUs that are attached to a genpd, > which typically becomes useful from a genpd governor as following changes > is about to show, let's add a cpumask to the struct generic_pm_domain. At > the point when a CPU device gets attached to a genpd, let's update the > genpd's cpumask. Moreover, let's also propagate changes to the cpumask > upwards in the topology to the master PM domains. In this way, the cpumask > for a genpd hierarchically reflects all CPUs attached to the topology below > it. > > Finally, let's make this an opt-in feature, to avoid having to manage CPUs > and the cpumask for a genpd that doesn't need it. For that reason, let's > add a new genpd configuration bit, GENPD_FLAG_CPU_DOMAIN. > > Cc: Lina Iyer > Co-developed-by: Lina Iyer > Acked-by: Rafael J. Wysocki > Signed-off-by: Ulf Hansson Acked-by: Daniel Lezcano -- Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog 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=-4.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED autolearn=ham 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 424BDC43381 for ; Thu, 21 Mar 2019 09:54:27 +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 1493120850 for ; Thu, 21 Mar 2019 09:54:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="bD6wFfqu"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="sVuJNocC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1493120850 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=vb0lXyHEU3n4vLR0s6Zmw/l4tkkNbStBlb8f0rxypiM=; b=bD6wFfquKDCNBW VO/SngF1thco9AyfW8MsQP5nM1PrldWavcFqOm0f2rXDLUSnUYBqLA0M4W9yfHFh1c7E5TQ8cJrE2 dglY70H0/Qf6uISPeS970V6b4RxvlxzIIEV10iQPWkQHyxENnUkCA78q7PQsheOSYL5DjzrRPRPD3 6aCXCRCXVfGE6jXt6LdRZd9/VGiJc1txwq50fTRTWj8ERTPxxgY13vSuuomBXfsq7yxt/UuqYqr/O lSAQpOccSdw/5qyUaPQtONYZVnEFvR2FFuGtjUYL5BSNGsK8Cw9VQUVHmqFxHWiCr/8f8cVA/vPyw hy1MzLm2pTWOxJV5nPcg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h6uP1-0002dQ-Ku; Thu, 21 Mar 2019 09:54:23 +0000 Received: from mail-wr1-x442.google.com ([2a00:1450:4864:20::442]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h6uOx-0002cf-Rm for linux-arm-kernel@lists.infradead.org; Thu, 21 Mar 2019 09:54:21 +0000 Received: by mail-wr1-x442.google.com with SMTP id t5so5819379wri.7 for ; Thu, 21 Mar 2019 02:54:19 -0700 (PDT) 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=PtA00BZnGIQ1W8ogRfOhskhN2WYgip1xDULBJM774nI=; b=sVuJNocC8R0Oy50/uLP5LIkZbGBM704heNoDR56PXUXY+M+MZMtn5oTEnMs1vtdRQZ 1DGDpj4bDMfJ1O9QqyGyh+QV0ZR6OKF3FuvSh9dSabhPLJ+CkwKj/67WycpgB55HcMtc +uE13NMzBYqEI+rf1eGDw43BT3KHZZQdXE+zAZMynIwbujH5gIA9pb/mhXWaB9asWLdQ xexXQNL4sT8u7nuOKNPkwoF9ekouUIhqSHFVjzmeItIvBfQJWuOU9UIDmXsMxywXV4L0 Rpu3LzxUIaogdWpcOdBw+gGa1JvmwUdRWLH7CfCmgI29ifpUhXvRkbKltQCDgzlpnzr3 BSQw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; 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=PtA00BZnGIQ1W8ogRfOhskhN2WYgip1xDULBJM774nI=; b=CGWFUYBBXgif2gUe/hSbrSJBLXlpn6Aactc9MQN6dGhH1dfDheJSAUbrS4S3V9U99d jr3EYa+5EYt7XZTpigt+/NTtawyX4gBORYP/a1w6i0OXvdPmaWM00AcaytLqd9+jn9Kr QWNXEtBMsqfd/H4uoSTRk27hj4oZgOUiSjr4VB6o8K86kyuG+ObdWNPJ3fw+oTkJ8xXv ghKsjYFRyCFUqY68eqHzkC+V33p1/AMtxMoHsFuenJudqIUOVWY2BRXvPSOBSpp5Hxg/ uZd/NLPLO0a5WxMlFglXWg2gwBGayvp5fGjrxr+stL/QaOeidwUC8tcEGSjq6swozOB5 wnHg== X-Gm-Message-State: APjAAAVWSLqNiD4T8jZTe843YOIV+1Kms4eI4rt9BIRTDsVRJIxMUc9K wzXhJIafJ6iWgmEXoEQcsx2ZMQ== X-Google-Smtp-Source: APXvYqxzuvbZ9EU7qrrL/922RRnwPNOJAB+FljOJUAohU3XSit9TaRi+aLP8KcrWkMTd/pdt3/yetg== X-Received: by 2002:a5d:5401:: with SMTP id g1mr1979697wrv.70.1553162057843; Thu, 21 Mar 2019 02:54:17 -0700 (PDT) Received: from [192.168.0.41] (27.78.95.92.rev.sfr.net. [92.95.78.27]) by smtp.googlemail.com with ESMTPSA id h18sm2545971wrt.97.2019.03.21.02.54.15 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 21 Mar 2019 02:54:17 -0700 (PDT) Subject: Re: [PATCH v12 2/4] PM / Domains: Add support for CPU devices to genpd To: Ulf Hansson , "Rafael J . Wysocki" , linux-pm@vger.kernel.org References: <20190227195836.24739-1-ulf.hansson@linaro.org> <20190227195836.24739-3-ulf.hansson@linaro.org> From: Daniel Lezcano Message-ID: <3ceca6d2-c780-49e4-5c90-566a7e8433ce@linaro.org> Date: Thu, 21 Mar 2019 10:54:15 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: <20190227195836.24739-3-ulf.hansson@linaro.org> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190321_025419_926894_E9FFC07E X-CRM114-Status: GOOD ( 16.47 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Lorenzo Pieralisi , Vincent Guittot , Geert Uytterhoeven , Kevin Hilman , Stephen Boyd , Frederic Weisbecker , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Lina Iyer , Tony Lindgren , Viresh Kumar , Sudeep Holla , Thomas Gleixner , "Raju P . L . S . S . S . N" , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gMjcvMDIvMjAxOSAyMDo1OCwgVWxmIEhhbnNzb24gd3JvdGU6Cj4gVG8gZW5hYmxlIGEgZGV2 aWNlIGJlbG9uZ2luZyB0byBhIENQVSB0byBiZSBhdHRhY2hlZCB0byBhIFBNIGRvbWFpbiBtYW5h Z2VkCj4gYnkgZ2VucGQsIGxldCdzIGRvIGEgZmV3IGNoYW5nZXMgdG8gaXQsIGFzIHRvIG1ha2Ug aXQgY29udmVuaWVudCB0byBtYW5hZ2UKPiB0aGUgc3BlY2lmaWNzIGFyb3VuZCBDUFVzLgo+IAo+ IFRvIGJlIGFibGUgdG8gcXVpY2tseSBmaW5kIG91dCB3aGF0IENQVXMgdGhhdCBhcmUgYXR0YWNo ZWQgdG8gYSBnZW5wZCwKPiB3aGljaCB0eXBpY2FsbHkgYmVjb21lcyB1c2VmdWwgZnJvbSBhIGdl bnBkIGdvdmVybm9yIGFzIGZvbGxvd2luZyBjaGFuZ2VzCj4gaXMgYWJvdXQgdG8gc2hvdywgbGV0 J3MgYWRkIGEgY3B1bWFzayB0byB0aGUgc3RydWN0IGdlbmVyaWNfcG1fZG9tYWluLiBBdAo+IHRo ZSBwb2ludCB3aGVuIGEgQ1BVIGRldmljZSBnZXRzIGF0dGFjaGVkIHRvIGEgZ2VucGQsIGxldCdz IHVwZGF0ZSB0aGUKPiBnZW5wZCdzIGNwdW1hc2suIE1vcmVvdmVyLCBsZXQncyBhbHNvIHByb3Bh Z2F0ZSBjaGFuZ2VzIHRvIHRoZSBjcHVtYXNrCj4gdXB3YXJkcyBpbiB0aGUgdG9wb2xvZ3kgdG8g dGhlIG1hc3RlciBQTSBkb21haW5zLiBJbiB0aGlzIHdheSwgdGhlIGNwdW1hc2sKPiBmb3IgYSBn ZW5wZCBoaWVyYXJjaGljYWxseSByZWZsZWN0cyBhbGwgQ1BVcyBhdHRhY2hlZCB0byB0aGUgdG9w b2xvZ3kgYmVsb3cKPiBpdC4KPiAKPiBGaW5hbGx5LCBsZXQncyBtYWtlIHRoaXMgYW4gb3B0LWlu IGZlYXR1cmUsIHRvIGF2b2lkIGhhdmluZyB0byBtYW5hZ2UgQ1BVcwo+IGFuZCB0aGUgY3B1bWFz ayBmb3IgYSBnZW5wZCB0aGF0IGRvZXNuJ3QgbmVlZCBpdC4gRm9yIHRoYXQgcmVhc29uLCBsZXQn cwo+IGFkZCBhIG5ldyBnZW5wZCBjb25maWd1cmF0aW9uIGJpdCwgR0VOUERfRkxBR19DUFVfRE9N QUlOLgo+IAo+IENjOiBMaW5hIEl5ZXIgPGlsaW5hQGNvZGVhdXJvcmEub3JnPgo+IENvLWRldmVs b3BlZC1ieTogTGluYSBJeWVyIDxsaW5hLml5ZXJAbGluYXJvLm9yZz4KPiBBY2tlZC1ieTogUmFm YWVsIEouIFd5c29ja2kgPHJhZmFlbC5qLnd5c29ja2lAaW50ZWwuY29tPgo+IFNpZ25lZC1vZmYt Ynk6IFVsZiBIYW5zc29uIDx1bGYuaGFuc3NvbkBsaW5hcm8ub3JnPgoKQWNrZWQtYnk6IERhbmll bCBMZXpjYW5vIDxkYW5pZWwubGV6Y2Fub0BsaW5hcm8ub3JnPgoKLS0gCiA8aHR0cDovL3d3dy5s aW5hcm8ub3JnLz4gTGluYXJvLm9yZyDilIIgT3BlbiBzb3VyY2Ugc29mdHdhcmUgZm9yIEFSTSBT b0NzCgpGb2xsb3cgTGluYXJvOiAgPGh0dHA6Ly93d3cuZmFjZWJvb2suY29tL3BhZ2VzL0xpbmFy bz4gRmFjZWJvb2sgfAo8aHR0cDovL3R3aXR0ZXIuY29tLyMhL2xpbmFyb29yZz4gVHdpdHRlciB8 CjxodHRwOi8vd3d3LmxpbmFyby5vcmcvbGluYXJvLWJsb2cvPiBCbG9nCgoKX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWls aW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0 cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=