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=-9.0 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 0BE18C43381 for ; Fri, 22 Mar 2019 20:26:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C47C021841 for ; Fri, 22 Mar 2019 20:26:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amdcloud.onmicrosoft.com header.i=@amdcloud.onmicrosoft.com header.b="1Mf/49jv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728000AbfCVU0n (ORCPT ); Fri, 22 Mar 2019 16:26:43 -0400 Received: from mail-eopbgr720071.outbound.protection.outlook.com ([40.107.72.71]:57856 "EHLO NAM05-CO1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726589AbfCVU0l (ORCPT ); Fri, 22 Mar 2019 16:26:41 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amdcloud.onmicrosoft.com; s=selector1-amd-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=ypHsmOzKoO8CbtlP60gaGkfz+t4ohUU+fEsdKDjkjAE=; b=1Mf/49jvNxe1xlryohx96QjGlzd6wtu2MBqGnULysOHEgpy5L0F8YrMJCVkPAj8rwICNzZNbnRAPdr94WrQXsCeHFx+DCXtNqw/5Qz+Ff4YRj+YRESc6leVKzV+JInXhuWDhvvdSnGWvseD6dwOqDVNpcQDYazf9PnxVkcDSg7o= Received: from SN6PR12MB2736.namprd12.prod.outlook.com (52.135.107.27) by SN6PR12MB2687.namprd12.prod.outlook.com (52.135.103.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1730.16; Fri, 22 Mar 2019 20:25:58 +0000 Received: from SN6PR12MB2736.namprd12.prod.outlook.com ([fe80::9584:f1be:656e:b00b]) by SN6PR12MB2736.namprd12.prod.outlook.com ([fe80::9584:f1be:656e:b00b%5]) with mapi id 15.20.1709.015; Fri, 22 Mar 2019 20:25:58 +0000 From: "Natarajan, Janakarajan" To: "linux-acpi@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-pm@vger.kernel.org" , "devel@acpica.org" CC: "Rafael J . Wysocki" , Len Brown , Viresh Kumar , Robert Moore , Erik Schmauss , "Natarajan, Janakarajan" Subject: [PATCH 1/6] acpi/cppc: Ensure only supported CPPC sysfs entries are created Thread-Topic: [PATCH 1/6] acpi/cppc: Ensure only supported CPPC sysfs entries are created Thread-Index: AQHU4O113BSSNkgmEEC187+8w8GSwQ== Date: Fri, 22 Mar 2019 20:25:58 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: SN4PR0201CA0011.namprd02.prod.outlook.com (2603:10b6:803:2b::21) To SN6PR12MB2736.namprd12.prod.outlook.com (2603:10b6:805:77::27) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Janakarajan.Natarajan@amd.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.17.1 x-originating-ip: [165.204.78.2] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 9fbdd0c2-848e-404d-60a9-08d6af0497b2 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600127)(711020)(4605104)(4618075)(2017052603328)(7153060)(7193020);SRVR:SN6PR12MB2687; x-ms-traffictypediagnostic: SN6PR12MB2687: x-microsoft-antispam-prvs: x-forefront-prvs: 09840A4839 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(346002)(366004)(39860400002)(396003)(136003)(376002)(189003)(199004)(7736002)(11346002)(71190400001)(5660300002)(14454004)(71200400001)(478600001)(6436002)(446003)(72206003)(2616005)(476003)(305945005)(97736004)(68736007)(2501003)(6486002)(256004)(105586002)(486006)(118296001)(54906003)(53936002)(110136005)(81166006)(2906002)(81156014)(25786009)(99286004)(6512007)(106356001)(8936002)(36756003)(50226002)(102836004)(4326008)(26005)(6116002)(2201001)(6506007)(66066001)(3846002)(76176011)(316002)(386003)(86362001)(52116002)(186003)(8676002);DIR:OUT;SFP:1101;SCL:1;SRVR:SN6PR12MB2687;H:SN6PR12MB2736.namprd12.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: amd.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: Duckk0lyZt/Yc4po6656TX3h2XSloemvdd8vsmqGGDpB8st6Z0JQTKDZcCg+H0ynm1+qI84BTi2MO0bqR6MVC/9A5JpPxTS6R9rmkpHR3VclgtoaOOfq8NuCZXxfv64A5keVR4d/i9IUhikJCwUvc5I7T+Bt2F8G7BvLluVfeyHcmEzCzcwLh6lVWg2QLpsZyfue2x+lgeacPo6ZBnGIX8A2GooJ1VNA0xHbGkfjHmpL7vR46jxE0ffpZAqCu0iW/sqmlOeklK2wZ2gyo4w0/0FB/g8ZjwVncWHx6SueEPLEFqk8QKY2d/4s6FpQ7udilKPw2a0KEAqwV5vCtq4lPSjcIiWyz/h3c+FEuGw2txsFx6CZ6nkmBVWVLyraBMpVjl6MtyfnCo/u2igaLkV8joJZwjh6mw+LftQpL/YIfCg= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 9fbdd0c2-848e-404d-60a9-08d6af0497b2 X-MS-Exchange-CrossTenant-originalarrivaltime: 22 Mar 2019 20:25:58.4617 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR12MB2687 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add attributes for registers that are supported by the platform. This preve= nts unsupported optional registers from having sysfs entries created. Signed-off-by: Janakarajan Natarajan --- drivers/acpi/cppc_acpi.c | 70 ++++++++++++++++++++++++++++++++-------- 1 file changed, 56 insertions(+), 14 deletions(-) diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c index 1b207fca1420..66fad270376c 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -179,22 +179,8 @@ static ssize_t show_feedback_ctrs(struct kobject *kobj= , } define_one_cppc_ro(feedback_ctrs); =20 -static struct attribute *cppc_attrs[] =3D { - &feedback_ctrs.attr, - &reference_perf.attr, - &wraparound_time.attr, - &highest_perf.attr, - &lowest_perf.attr, - &lowest_nonlinear_perf.attr, - &nominal_perf.attr, - &nominal_freq.attr, - &lowest_freq.attr, - NULL -}; - static struct kobj_type cppc_ktype =3D { .sysfs_ops =3D &kobj_sysfs_ops, - .default_attrs =3D cppc_attrs, }; =20 static int check_pcc_chan(int pcc_ss_id, bool chk_err_bit) @@ -709,6 +695,57 @@ static bool is_cppc_supported(int revision, int num_en= t) * } */ =20 +int set_cppc_attrs(struct cpc_desc *cpc, int entries) +{ + static struct attribute **cppc_attrs; + int i, attr_i =3D 0; + + /* Extra for feedback_ctrs to be exposed via sysfs */ + cppc_attrs =3D kcalloc(entries + 1, sizeof(*cppc_attrs), GFP_KERNEL); + if (!cppc_attrs) + return -ENOMEM; + + for (i =3D 0; i < MAX_CPC_REG_ENT && attr_i < entries; i++) { + if (!CPC_SUPPORTED(&cpc->cpc_regs[i])) + continue; + + switch (i) { + case HIGHEST_PERF: + cppc_attrs[attr_i++] =3D &highest_perf.attr; + break; + case NOMINAL_PERF: + cppc_attrs[attr_i++] =3D &nominal_perf.attr; + break; + case LOW_NON_LINEAR_PERF: + cppc_attrs[attr_i++] =3D &lowest_nonlinear_perf.attr; + break; + case LOWEST_PERF: + cppc_attrs[attr_i++] =3D &lowest_perf.attr; + break; + case NOMINAL_FREQ: + cppc_attrs[attr_i++] =3D &nominal_freq.attr; + break; + case LOWEST_FREQ: + cppc_attrs[attr_i++] =3D &lowest_freq.attr; + break; + case REFERENCE_PERF: + cppc_attrs[attr_i++] =3D &reference_perf.attr; + break; + case CTR_WRAP_TIME: + cppc_attrs[attr_i++] =3D &wraparound_time.attr; + break; + } + } + + /* Set feedback_ctr sysfs entry */ + cppc_attrs[attr_i] =3D &feedback_ctrs.attr; + + /* Set kobj_type member */ + cppc_ktype.default_attrs =3D cppc_attrs; + + return 0; +} + /** * acpi_cppc_processor_probe - Search for per CPU _CPC objects. * @pr: Ptr to acpi_processor containing this CPUs logical Id. @@ -863,6 +900,10 @@ int acpi_cppc_processor_probe(struct acpi_processor *p= r) /* Plug PSD data into this CPUs CPC descriptor. */ per_cpu(cpc_desc_ptr, pr->id) =3D cpc_ptr; =20 + ret =3D set_cppc_attrs(cpc_ptr, num_ent - 2); + if (ret) + goto out_free; + ret =3D kobject_init_and_add(&cpc_ptr->kobj, &cppc_ktype, &cpu_dev->kobj, "acpi_cppc"); if (ret) { @@ -924,6 +965,7 @@ void acpi_cppc_processor_exit(struct acpi_processor *pr= ) iounmap(addr); } =20 + kfree(cppc_ktype.default_attrs); kobject_put(&cpc_ptr->kobj); kfree(cpc_ptr); } --=20 2.17.1