From nobody Fri Apr 3 11:13:12 2026 Received: from DM1PR04CU001.outbound.protection.outlook.com (mail-centralusazon11010039.outbound.protection.outlook.com [52.101.61.39]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 098D533EB0A; Wed, 18 Feb 2026 14:59:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.61.39 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771426745; cv=fail; b=rKwWPo8nzUTd6ZDEaLkBw1gvQYNBIbX3VAd5lmlaFyqn9jBqGjeQhIB/z/Rcr6YdAUMI5UTv9KaQbGoCldLNrzo1I52mZGqGtlZnvSL/ytfGVnGLh3394zSuaS0nfeq2BvhZ1vIIKqPpwDHFfQupGZjrMQUPmflyEd2Jd5bxGo0= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771426745; c=relaxed/simple; bh=rkgw7J7aEvhAwZhMhXaFpGYgfoAG4myJoDTUjviIxpA=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Um6dwTkMWnoLRS1rV93DnT8Qn8YeAyTd3n+BdvCx+7TmS0VMS4LojxTIf9ddaZnTNA5iyD2mwX+aYJCwVOgC16gPMHwImeHaYlzcyPe+ZyzHO0m9V9WhnTOW+DkHV4lC6olg81RuUeuNrTnf45V3xi1ziQ2uHfQoKgg9akc9VlM= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com; spf=fail smtp.mailfrom=nvidia.com; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b=H3YsSqjT; arc=fail smtp.client-ip=52.101.61.39 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=nvidia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b="H3YsSqjT" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=OrQ6urdblv9eD2sHwMc3pmitbEPfETnUBKoxmLK/SO2H3OqeXZnly+zG7/2t/lGTs2V7Z9aFspVIapNZ4VjDi8CgaX0uVJZeN34s2VdYGVT1CSKzWvfJAlRVxqpg9DWoQDAbE4q/3lC6+FJp8C7Cce1k+QTnuapmn+rP1IRmCuHuAoAZzlcyD0twCWbfh1B7Qi3UIIFm+iqVVIOTp+DFMVqe+G8XmAqJwbzuiYT+zsJ8DCxeVIw4CEU9KLcle0bQBJ/yKWOdxujMlMQ2N4ZyIEf0XHjlzBSyDQx+uNeSWX6jtB6UacRPsNlkf9ReZqsnJ+ePWnhU7xooCuW9/Y12jA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=TzJwW+rDIjSvp+cuZC55o3fEpLUEyBZm585x6s3jeuE=; b=U3jt8mFKkwe4WV4Tf6A72AA2bEsoU89d54m5KFhfTZilSSldsBp4ZgVlunOX6Lf9W7AF0o3KfM+3LwvmwKaIiq5WA4qglYgoXGkfXi8WnvjeCr/+TQYWHkgycNMU5n4QvrgsY6/f2Qzrzs3fOoIN2q6nZmhDYdVr8+2tCrZTYR5tKcB+bn90ehmhbI8FIODhDZpDargnrEPfi1m3IIlpMdl7nsaDdb3B8V8QKQahpwhg9DI5wcFz6Zn1lhenrOq8ARao/I+qsrfFCR+qJy89D0idr3XwbQwieIDt6WrfeQtYHSioITjUFKuXPASXEAuODZNeeFRFzE/I2AdvgTohDg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.160) smtp.rcpttodomain=kernel.org smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=TzJwW+rDIjSvp+cuZC55o3fEpLUEyBZm585x6s3jeuE=; b=H3YsSqjTcF0LuelprdUoR0Nor003nvDucfRigCW5R56DqREqipHZkBnjQOfok4nbd+9FMwsPrfjzTxwdYfOmjTgHcQeKGw0dH1S2jFXA4NT++4J4qCo3K/8cB62kKFlRxI7GLJGvmk52bX+F9tOBpZVfq1sUXA9tcKkKb6e3Qb2Ab2h7y7n0du99kWYdb5umclwB6zeQ7dgaqhsmheCLofZu+92xSJHb2D3vcZFWWCbxJXYFhwrCIee3wARpCSY3qNOZwxImir5HJEYDwepIJMZ5xK0CwX6x0DXndCQr4Lk65wuIqVg4g4xrw/MR4Rfs6O9cDEXU0TZnOllAVF7veA== Received: from MN2PR22CA0024.namprd22.prod.outlook.com (2603:10b6:208:238::29) by DM4PR12MB6496.namprd12.prod.outlook.com (2603:10b6:8:bd::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9632.13; Wed, 18 Feb 2026 14:58:57 +0000 Received: from BL02EPF0001A102.namprd05.prod.outlook.com (2603:10b6:208:238:cafe::ee) by MN2PR22CA0024.outlook.office365.com (2603:10b6:208:238::29) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.9632.14 via Frontend Transport; Wed, 18 Feb 2026 14:58:57 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.160) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.160 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.160; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.160) by BL02EPF0001A102.mail.protection.outlook.com (10.167.241.134) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9632.12 via Frontend Transport; Wed, 18 Feb 2026 14:58:57 +0000 Received: from rnnvmail205.nvidia.com (10.129.68.10) by mail.nvidia.com (10.129.200.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Wed, 18 Feb 2026 06:58:37 -0800 Received: from rnnvmail201.nvidia.com (10.129.68.8) by rnnvmail205.nvidia.com (10.129.68.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Wed, 18 Feb 2026 06:58:36 -0800 Received: from build-bwicaksono-noble-20251018.internal (10.127.8.11) by mail.nvidia.com (10.129.68.8) with Microsoft SMTP Server id 15.2.2562.20 via Frontend Transport; Wed, 18 Feb 2026 06:58:35 -0800 From: Besar Wicaksono To: , , , CC: , , , , , , , , , , , , , Besar Wicaksono Subject: [PATCH v2 3/8] perf/arm_cspmu: Add arm_cspmu_acpi_dev_get Date: Wed, 18 Feb 2026 14:58:04 +0000 Message-ID: <20260218145809.1622856-4-bwicaksono@nvidia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260218145809.1622856-1-bwicaksono@nvidia.com> References: <20260218145809.1622856-1-bwicaksono@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A102:EE_|DM4PR12MB6496:EE_ X-MS-Office365-Filtering-Correlation-Id: 0690fbb9-2d5b-4323-b2f0-08de6efe3e02 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|1800799024|376014|82310400026; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?pwP0yMBONvzDt91T+vKoLRV3WPwbtD2bKu5ax7OIa1yYOwkzvjlf+SaiazAn?= =?us-ascii?Q?0duVJeGrCMFLbMYH3ICNB0qZYQXQT/eZmlcB6ortgYfyMh3FT12DXjh6eonw?= =?us-ascii?Q?VN+B3C01B8Cm3skDdAeNwZtwP2iPz1nwf5FbiSA5x0sMxS2/2bqXbKSR4AAA?= =?us-ascii?Q?JIduXP7d123PF7TeMTVg3ZlZbyn2nBqYa0zuYg6E59dmEM71ekwIjAiBYooZ?= =?us-ascii?Q?N4nFZD+/r87odYNjSbU1LPz4rcjODku3GZbDTOkHvuz1HL44kRDQDQGZcEPc?= =?us-ascii?Q?mlQzAYz9K+ByVFz8XjSTLcHxh5iVNa30hfdSxLT0m2YMeIP17svwkbBOYgR7?= =?us-ascii?Q?ipOYmaCAP6aQAN6J79WD9TX0U0uSVXTCUoRbst2xGe+xVM1kUlrLRU5c6kL6?= =?us-ascii?Q?OVtoUPI8ABKfWwb+2LWepWqp+7vqCevy5m63UVRA1iMo1JuqpLtp/Iz6gDjZ?= =?us-ascii?Q?yKgd7iV+W+JkoG7VppKF9VhvfsjUJlat6ZL35iSTQrP/9A6E5SpbfSeFC91g?= =?us-ascii?Q?80W8iHy2d/bhBWXxGuYgWWKxG9Pjc8zESirROCygbJBxDoo3+vOXNUjUGv+O?= =?us-ascii?Q?G9zyuJRkbKJUbmRAJxDr44frZVTAjc9wKsZpaDZzTE0vFFAjCCYV4A9h3Qbz?= =?us-ascii?Q?MR0tc39yCi5I2pOQoj2Y7KJ3pdVoaDN0Dm46ghnU1qIhBuv6cjLtanoc7wCG?= =?us-ascii?Q?Ytq7W+9BprTapRz/4ljz2O0nN+NfgiiO2V0/FfZVJiF244RyWKGqSPBsbNLo?= =?us-ascii?Q?9hBlDqjX8QVIj2XnFR1MPokGjYkKvsKp0zo96+z9+ajoqnE3azys5aDficB/?= =?us-ascii?Q?Efg9yswBjdslSAiYpWuySXUyW3+wFVgyhgW8ZsBU5eGcrSHz5iWBqGCM9QC7?= =?us-ascii?Q?YZ41I2QumEw2uGAiRrftmxDaRQ5TFRe0Mvjozk1Hb9lMIHx65fWCDXW3AlJa?= =?us-ascii?Q?1kOxeRPOIhfPSsL41dy3S2vx90uhIoarkUOe2q32LOkiMmQ5Csj8J3CP81eb?= =?us-ascii?Q?7eujA6t/Ty2jpxY4+DZqlzGDluTBezpsD3ovautWSPWoVM6H+v75vDX1FyEi?= =?us-ascii?Q?jM7egPizNJ0rp2P07ujRI6dmSi1n+qeG7ALGhiFew8P9+BAMyABjX4PYK5Nz?= =?us-ascii?Q?5S/w4VGCyPZmLHkANWX3/KIcGsLbzRSM8kNzInYzcGWho4zFt+fXjkUtw9O6?= =?us-ascii?Q?tA4TKXilZmi189Pl71RkwYV3GqYfKPPs+pexp82thZl/0Ma9+FdNA5arM6Pf?= =?us-ascii?Q?2lmRVUsnRgY14fQB4LA3QDM0xoIkI/zNdzmcgCGZ/hjKoMRAkm1tX3E5FTn4?= =?us-ascii?Q?lru2UtfOeV0R+vWjUX+ADtB9e7P85xsKUNOMaDZAiNLPa3GCnTPxTYltEPJc?= =?us-ascii?Q?iO+UI2Y8NFchjTlCqvkYPdsJeAuuQo6iEmGXcKjIMebHRHrf14Z+1mq7jT4X?= =?us-ascii?Q?A1SbLxEdJLX5f6uRyI9Julq1s0n+lYxZkv3ReiPdZZWkhG6BKws5c9ksSh0U?= =?us-ascii?Q?n4LuygwZZ/Hjca/RJdz67gZ6JiX+HlvJQf7d/z4L6txrxoC1TbgmEL5vdMRG?= =?us-ascii?Q?3EcKJn5+OPNDkxS/gec8v14ZYC/LP5mYiURKSHBPV1BXWDDKey05qjqiRqjq?= =?us-ascii?Q?0W8GUVjnx3c9PRJp2gMnp9L0nYOBcpS8/0Sf7yRFcb4B9AxjUJ21z5/1DYrQ?= =?us-ascii?Q?8n6OyA=3D=3D?= X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230040)(36860700013)(1800799024)(376014)(82310400026);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 3GjFh1oTwA4z/hpY75nKrwiQwwAC37mx/FRxdQQ+lVGlWqwGY9nEbnTVvbBLh+blen07aKKh4f4X4FmdG1nuBte9oQnuGedL8r8BQlTCzhzt4BAyGrY4zgTkIvrhg3g5rMO1LvyIEvZxjxP2GbPKz9A/8iNIBMT7hG+GPJM+woSuowiAnWy/Bid2lmfELSZox8LZka/ifWp6l0h/NHAeVp8E2tXzsMwUgkExY7hOIOJexo+466W/HI0qTSIybOlU/+1sU9j6M1PpPGB0J5g2XrQxPj9/nFWGWWb44q2hh6Huk9E/ya7R8k/VPG9l9GhWuv4CvwK73NJ19grIHxOx4oAyI2yYrM6haBR3eFGSUMutnv2uOSsq3cU4KLkpBIRvBnBywu1exunf1fRrrYExvbtghGbe3VHcYWfm0ahA/EDlfjriQnibHKuAd9M+wY6l X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Feb 2026 14:58:57.2450 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0690fbb9-2d5b-4323-b2f0-08de6efe3e02 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A102.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB6496 Content-Type: text/plain; charset="utf-8" Add interface to get ACPI device associated with the PMU. This ACPI device may contain additional properties not covered by the standard properties. Reviewed-by: Ilkka Koskinen Signed-off-by: Besar Wicaksono --- drivers/perf/arm_cspmu/arm_cspmu.c | 22 +++++++++++++++++++++- drivers/perf/arm_cspmu/arm_cspmu.h | 17 ++++++++++++++++- 2 files changed, 37 insertions(+), 2 deletions(-) diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c b/drivers/perf/arm_cspmu/ar= m_cspmu.c index 34430b68f602..ab2479c048bb 100644 --- a/drivers/perf/arm_cspmu/arm_cspmu.c +++ b/drivers/perf/arm_cspmu/arm_cspmu.c @@ -16,7 +16,7 @@ * The user should refer to the vendor technical documentation to get deta= ils * about the supported events. * - * Copyright (c) 2022-2023, NVIDIA CORPORATION & AFFILIATES. All rights re= served. + * Copyright (c) 2022-2026, NVIDIA CORPORATION & AFFILIATES. All rights re= served. * */ =20 @@ -1132,6 +1132,26 @@ static int arm_cspmu_acpi_get_cpus(struct arm_cspmu = *cspmu) =20 return 0; } + +struct acpi_device *arm_cspmu_acpi_dev_get(const struct arm_cspmu *cspmu) +{ + char hid[16]; + char uid[16]; + const struct acpi_apmt_node *apmt_node; + + apmt_node =3D arm_cspmu_apmt_node(cspmu->dev); + if (!apmt_node || apmt_node->type !=3D ACPI_APMT_NODE_TYPE_ACPI) + return NULL; + + memset(hid, 0, sizeof(hid)); + memset(uid, 0, sizeof(uid)); + + memcpy(hid, &apmt_node->inst_primary, sizeof(apmt_node->inst_primary)); + snprintf(uid, sizeof(uid), "%u", apmt_node->inst_secondary); + + return acpi_dev_get_first_match_dev(hid, uid, -1); +} +EXPORT_SYMBOL_GPL(arm_cspmu_acpi_dev_get); #else static int arm_cspmu_acpi_get_cpus(struct arm_cspmu *cspmu) { diff --git a/drivers/perf/arm_cspmu/arm_cspmu.h b/drivers/perf/arm_cspmu/ar= m_cspmu.h index cd65a58dbd88..320096673200 100644 --- a/drivers/perf/arm_cspmu/arm_cspmu.h +++ b/drivers/perf/arm_cspmu/arm_cspmu.h @@ -1,13 +1,14 @@ /* SPDX-License-Identifier: GPL-2.0 * * ARM CoreSight Architecture PMU driver. - * Copyright (c) 2022-2023, NVIDIA CORPORATION & AFFILIATES. All rights re= served. + * Copyright (c) 2022-2026, NVIDIA CORPORATION & AFFILIATES. All rights re= served. * */ =20 #ifndef __ARM_CSPMU_H__ #define __ARM_CSPMU_H__ =20 +#include #include #include #include @@ -255,4 +256,18 @@ int arm_cspmu_impl_register(const struct arm_cspmu_imp= l_match *impl_match); /* Unregister vendor backend. */ void arm_cspmu_impl_unregister(const struct arm_cspmu_impl_match *impl_mat= ch); =20 +#if defined(CONFIG_ACPI) +/** + * Get ACPI device associated with the PMU. + * The caller is responsible for calling acpi_dev_put() on the returned de= vice. + */ +struct acpi_device *arm_cspmu_acpi_dev_get(const struct arm_cspmu *cspmu); +#else +static inline struct acpi_device * +arm_cspmu_acpi_dev_get(const struct arm_cspmu *cspmu) +{ + return NULL; +} +#endif + #endif /* __ARM_CSPMU_H__ */ --=20 2.43.0