From patchwork Wed Oct 23 17:21:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yazen Ghannam X-Patchwork-Id: 13847675 Received: from NAM02-DM3-obe.outbound.protection.outlook.com (mail-dm3nam02on2050.outbound.protection.outlook.com [40.107.95.50]) (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 8D98A1D14E9; Wed, 23 Oct 2024 17:22:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.95.50 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729704136; cv=fail; b=hBRI8CdGOGwIkNl2b7O3NZxac+tDMMp7ItOly8D4nLjlRJ8vxDu9KBgCXapmniK6jo6zQA/EuQl7MQ3OFwqg7xBSGQsulftijf9WNrM2zJATVWz6AsdXnkIa/ocV9eZ/KMh47sr4G451JhKlBvELI5iVfbhr8kPv2InZygxVrjk= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729704136; c=relaxed/simple; bh=oOvDgsnPSp9BHfYzWnE8Z7yqQoRpaEJHAO1S5ZxnppQ=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=uiJwxIUrRqzWDgJ89Uecoy3MiKG7okTctddDwEKYjAH1lChzTV+pWb2UkeSFrW+M/vy9p+7KGJxkBOb/Q4fP3jAc9ZRP3iYjw4L4jHoEmCTdFl6+1t5PxjM/JYR/E5BGe9LWTwcjnlAFShDdloEDbFAcojs2xnFviUc/LWQKjG4= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=IgQPnZFh; arc=fail smtp.client-ip=40.107.95.50 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="IgQPnZFh" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=ZFwI5qv2+lztKFtZBgQMAHDMRasCaKoi607/+/zbI/yjPRljdgW1X+PMGkWS/jHvMLo45qHGoCavOd4DDnK1+MGSdWgc2h4e6TExlzS7XHiTayA90g8lZC1pgVW27ybsCdd9d2F/HNK8548GAzZ2bQK2+wlWvLUxPtbSXCRhi0jbLilc/CRCM87CSGaNNpXeUxjQLLxNj/qY+yVbPU89vTzbCWhiTGkPKcwdZ0fXThl3NIvkERClSIf8FDaFo8kcJkRdfPXC4bE3ds69ChYpJ2SJkrlfqCIYajcmMsYn+ddtPDT0r9QYhZonYKHmyOAZB2cQdjf1PHLfBPLwIf3pEw== 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=LPKe+fsjIdF+7L4mh8jZgDY7am1DoKYhNkgOoOAIE38=; b=EdG6x9KcOWvzp0+vPxsO3yP2JGzCRMJ3/kXhD+poMVT1oQrU2kUAvU4kSHb0xYkjaybHn61kNI9Moa/i5gla+0gk3AshAXR2jdzkHW8SveH3uKznEqFmky6q//UaLcl95kowvkjg8e5ZAOHLhh95dGivyNhJfAdQLIX7SXgD0UpC0w0bIB+SJfrccB8b4uYOVEovhMjVAvsCzlUSsCgmvPOHnhbOVhioC+2ALpO0ufWMiwEeYa2mTFfmcxEr11grIcf7hBDSTQtEHoeqI2bQ+fL1hc6WTvHtz15lO9FoOPJFOAUuguBXpSb1+AyH9zRJ6sLb5BLXpKJ/ya5psrXFCw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=LPKe+fsjIdF+7L4mh8jZgDY7am1DoKYhNkgOoOAIE38=; b=IgQPnZFhs3gLH9NC7Jq9LtWJlrj251QSZjuRlc35hm2MRoJq0iOOgD0hgU7cqNEDBo6yctr76ULbRDIqYfdgxMTICtVZ8LeKu6jxv43iMhXUd6r1VPHnqqNJ7QET2sugqAAsT7U9sk6ZxGN3kWgDsQtA8Ke31yVbk69VTGL3saw= Received: from BN9P222CA0014.NAMP222.PROD.OUTLOOK.COM (2603:10b6:408:10c::19) by PH0PR12MB8031.namprd12.prod.outlook.com (2603:10b6:510:28e::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8093.16; Wed, 23 Oct 2024 17:22:10 +0000 Received: from BL6PEPF0001AB4E.namprd04.prod.outlook.com (2603:10b6:408:10c:cafe::fc) by BN9P222CA0014.outlook.office365.com (2603:10b6:408:10c::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8093.16 via Frontend Transport; Wed, 23 Oct 2024 17:22:10 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BL6PEPF0001AB4E.mail.protection.outlook.com (10.167.242.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8093.14 via Frontend Transport; Wed, 23 Oct 2024 17:22:10 +0000 Received: from purico-9eb2host.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Wed, 23 Oct 2024 12:22:09 -0500 From: Yazen Ghannam To: CC: , , , , , , , , , , , , , , , , , , , Yazen Ghannam Subject: [PATCH 07/16] x86/amd_nb: Use topology info to get AMD node count Date: Wed, 23 Oct 2024 17:21:41 +0000 Message-ID: <20241023172150.659002-8-yazen.ghannam@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241023172150.659002-1-yazen.ghannam@amd.com> References: <20241023172150.659002-1-yazen.ghannam@amd.com> Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL6PEPF0001AB4E:EE_|PH0PR12MB8031:EE_ X-MS-Office365-Filtering-Correlation-Id: af659f68-5af2-499a-d76b-08dcf3873a66 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|82310400026|36860700013|7416014; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(1800799024)(376014)(82310400026)(36860700013)(7416014);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Oct 2024 17:22:10.4783 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: af659f68-5af2-499a-d76b-08dcf3873a66 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL6PEPF0001AB4E.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR12MB8031 Currently, the total AMD node count is determined by searching and counting CPU/node devices using PCI IDs. However, AMD node information is already available through topology CPUID/MSRs. The recent topology rework has made this info easier to access. Replace the node counting code with a simple product of topology info. Signed-off-by: Yazen Ghannam --- arch/x86/include/asm/amd_node.h | 5 +++++ arch/x86/kernel/amd_nb.c | 11 ++--------- 2 files changed, 7 insertions(+), 9 deletions(-) diff --git a/arch/x86/include/asm/amd_node.h b/arch/x86/include/asm/amd_node.h index 3f097dd479f8..419a0ad13ef2 100644 --- a/arch/x86/include/asm/amd_node.h +++ b/arch/x86/include/asm/amd_node.h @@ -25,4 +25,9 @@ struct pci_dev *amd_node_get_func(u16 node, u8 func); struct pci_dev *amd_node_get_root(u16 node); +static inline u16 amd_num_nodes(void) +{ + return topology_amd_nodes_per_pkg() * topology_max_packages(); +} + #endif /*_ASM_X86_AMD_NODE_H_*/ diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c index 135ecc0a0166..7ccd769f9c5e 100644 --- a/arch/x86/kernel/amd_nb.c +++ b/arch/x86/kernel/amd_nb.c @@ -186,7 +186,6 @@ static int amd_cache_northbridges(void) const struct pci_device_id *misc_ids = amd_nb_misc_ids; struct pci_dev *misc; struct amd_northbridge *nb; - u16 misc_count = 0; u16 i; if (amd_northbridges.num) @@ -196,19 +195,13 @@ static int amd_cache_northbridges(void) misc_ids = hygon_nb_misc_ids; } - misc = NULL; - while ((misc = next_northbridge(misc, misc_ids))) - misc_count++; - - if (!misc_count) - return -ENODEV; + amd_northbridges.num = amd_num_nodes(); - nb = kcalloc(misc_count, sizeof(struct amd_northbridge), GFP_KERNEL); + nb = kcalloc(amd_northbridges.num, sizeof(struct amd_northbridge), GFP_KERNEL); if (!nb) return -ENOMEM; amd_northbridges.nb = nb; - amd_northbridges.num = misc_count; misc = NULL; for (i = 0; i < amd_northbridges.num; i++) {