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Shenoy" , "Mario Limonciello" , Perry Yuan , , , , , "Shyam Sundar S K" Subject: [PATCH v6 12/12] platform/x86/amd: hfi: Add debugfs support Date: Mon, 4 Nov 2024 11:54:07 -0600 Message-ID: <20241104175407.19546-13-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241104175407.19546-1-mario.limonciello@amd.com> References: <20241104175407.19546-1-mario.limonciello@amd.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF00002312:EE_|IA1PR12MB6386:EE_ X-MS-Office365-Filtering-Correlation-Id: 979fcc7a-23db-4826-f07a-08dcfcf9c7b5 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|1800799024|36860700013|376014|82310400026; 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)(36860700013)(376014)(82310400026); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Nov 2024 17:54:50.5851 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 979fcc7a-23db-4826-f07a-08dcfcf9c7b5 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: SJ1PEPF00002312.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB6386 Add a dump of the class and capabilities table to debugfs to assist with debugging scheduler issues. Reviewed-by: Gautham R. Shenoy Signed-off-by: Mario Limonciello --- drivers/platform/x86/amd/hfi/hfi.c | 36 ++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drivers/platform/x86/amd/hfi/hfi.c b/drivers/platform/x86/amd/hfi/hfi.c index 09905a354efdd..840a6a277d062 100644 --- a/drivers/platform/x86/amd/hfi/hfi.c +++ b/drivers/platform/x86/amd/hfi/hfi.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -74,6 +75,8 @@ struct amd_hfi_data { void __iomem *pcc_comm_addr; struct acpi_subtable_header *pcct_entry; struct amd_shmem_info *shmem; + + struct dentry *dbgfs_dir; }; /** @@ -234,6 +237,13 @@ static int amd_hfi_alloc_class_data(struct platform_device *pdev) return 0; } +static void amd_hfi_remove(struct platform_device *pdev) +{ + struct amd_hfi_data *dev = platform_get_drvdata(pdev); + + debugfs_remove_recursive(dev->dbgfs_dir); +} + static int amd_set_hfi_ipcc_score(struct amd_hfi_cpuinfo *hfi_cpuinfo, int cpu) { for (int i = 0; i < hfi_cpuinfo->nr_class; i++) @@ -388,6 +398,27 @@ static int amd_hfi_metadata_parser(struct platform_device *pdev, return ret; } +static int class_capabilities_show(struct seq_file *s, void *unused) +{ + int cpu, idx; + + seq_puts(s, "CPU #\tWLC\tPerf\tEff\n"); + for_each_present_cpu(cpu) { + struct amd_hfi_cpuinfo *hfi_cpuinfo = per_cpu_ptr(&amd_hfi_cpuinfo, cpu); + + seq_printf(s, "%d", cpu); + for (idx = 0; idx < hfi_cpuinfo->nr_class; idx++) { + seq_printf(s, "\t%d\t%d\t%d\n", + idx, + hfi_cpuinfo->amd_hfi_classes[idx].perf, + hfi_cpuinfo->amd_hfi_classes[idx].eff); + } + } + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(class_capabilities); + static int amd_hfi_pm_resume(struct device *dev) { int ret, cpu; @@ -463,6 +494,10 @@ static int amd_hfi_probe(struct platform_device *pdev) schedule_work(&sched_amd_hfi_itmt_work); + amd_hfi_data->dbgfs_dir = debugfs_create_dir("amd_hfi", arch_debugfs_dir); + debugfs_create_file("class_capabilities", 0644, amd_hfi_data->dbgfs_dir, pdev, + &class_capabilities_fops); + return 0; } @@ -474,6 +509,7 @@ static struct platform_driver amd_hfi_driver = { .acpi_match_table = ACPI_PTR(amd_hfi_platform_match), }, .probe = amd_hfi_probe, + .remove = amd_hfi_remove, }; static int __init amd_hfi_init(void)