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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-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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: =?us-ascii?Q?1yk9PKVVNptE/trC+pckgYevm1qDQjHsWodHMwTGNQ5nJYGX2kxd4Llz2TfD?= =?us-ascii?Q?MoxEKoUrCZJZkZ25/j2C3zH4H8nNUfgiAO7TawoEEhzHGQFuVzAnjIgXygMi?= =?us-ascii?Q?MMPkhZ8MzkSwjgADQTbzC2I0i4zjBplQY/uDWkkvXmwFljO/UK+sFcCEbZEr?= =?us-ascii?Q?tZ/m/ytUjDZhdyOcDzYf/5u9IHtufT+5boCpt7UWCu4UCDwy1rumRy4/aLcq?= =?us-ascii?Q?gdgXXilINzhjrmoKy40FZPQlHZED6hh7Hw0ysvfw1wp+wmQzBtwOTJIiaONG?= =?us-ascii?Q?DVY6bw8LgvDWMXBtG8Etu4BGou3IG4lwg/E0etDFQE2en2ZSlANjYUA/PwNz?= =?us-ascii?Q?bXrIl+WkGr+Kem3z8c8p8VvpGgr9UTbdnqmp5Zmi5D0KlblG7BE1NtOIayzJ?= =?us-ascii?Q?7CfXC1Zy0nNIpFgJu8PmaHuIWjpMBgt6fXVHntAWKI/QE1iss18FLmPZYonY?= =?us-ascii?Q?GDrMz2Kh/dz3rDRL5lhueYIvKgR2Zd3QMn8NwWfvKFfcRyVq+1TkSL+BLdJ5?= =?us-ascii?Q?n4ddKMHnQ2E7bomalSbxFhAg0zvKG9j8LkDur3vfMcMSI7yghelevZbu5sUA?= =?us-ascii?Q?jIQD/qXydJ44crA14J/kTubgj05z/JBqSSeVlfopXFMq+c64YUHmwPF0md4Q?= =?us-ascii?Q?AHVfKHiXUGEyHJEtU03fYCmtD68rC4hFEgu2x3ZYsxJv/rewuCCmtHQze4JD?= =?us-ascii?Q?rGN5VOH26gTdtezTEYRh6Wo4gPWVzTrTrGTAyQGhdx1mOI1Gl/tgOpMmGqQ4?= =?us-ascii?Q?wel2VOrjoKNCkbD9ZjOszLqoYQQepBO5o87avTXcDIQv3HXePDRJ+FNQH8f0?= =?us-ascii?Q?fSAEUtP8MC8EcWWwW57kGJgWc79fwHc5ZavwLxDhL80iitrNINSqAt274Vd4?= =?us-ascii?Q?/akQFyEDY5cbrpSaNHzvD/GYletOum4tXo1OZcaC5CIJCEuEli7+bwYJ2aaH?= =?us-ascii?Q?OuryOPUbQq985vjie5Tq3CZgmSPf3kXcJt9VS/6QHXU/0tpq/v0UDRaDMhIy?= =?us-ascii?Q?0yr2h4MQyZokM2tuKt+pIRpenNAJBtskkBx3yxTiR+6ovic1SXpHUuCtDGEW?= =?us-ascii?Q?LnNR44ZSdCS8iPE3PnZu0IVfW512nqRfVrWJWNB+1cs9N98m1OqmOAXajQKh?= =?us-ascii?Q?UJzwuaaXokOu21nj5NeThAkM6wRjSGCsVB6Pg4KAwUtLq3GYeQVGoZztYrMD?= =?us-ascii?Q?BUh3d5mWIFg/0HJx25FEeRhs8V/ee9aw+vQahuo1r4DHGi5DYlZ3grMxD4KW?= =?us-ascii?Q?pYbO6x4O+Brsy+1e2qEGd9O8pYfgoEEyaDz4OspbcBUJElCN3ffVZ6HcgHXm?= =?us-ascii?Q?KKZBwyhPujYvyZ5lDAJTVwp+MmTbw5JOQNCarepzo+xdehhfh8fcm3dYu1Ad?= =?us-ascii?Q?ab0WB0/n56R108amdwv+l+VIfjvGwoF+r08l8HOa1FiCDkc9Lw=3D=3D?= 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 Content-Type: text/plain; charset="utf-8" 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; }; =20 /** @@ -234,6 +237,13 @@ static int amd_hfi_alloc_class_data(struct platform_de= vice *pdev) return 0; } =20 +static void amd_hfi_remove(struct platform_device *pdev) +{ + struct amd_hfi_data *dev =3D 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 =3D 0; i < hfi_cpuinfo->nr_class; i++) @@ -388,6 +398,27 @@ static int amd_hfi_metadata_parser(struct platform_dev= ice *pdev, return ret; } =20 +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 =3D per_cpu_ptr(&amd_hfi_cpuinfo, cp= u); + + seq_printf(s, "%d", cpu); + for (idx =3D 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) =20 schedule_work(&sched_amd_hfi_itmt_work); =20 + amd_hfi_data->dbgfs_dir =3D debugfs_create_dir("amd_hfi", arch_debugfs_di= r); + debugfs_create_file("class_capabilities", 0644, amd_hfi_data->dbgfs_dir, = pdev, + &class_capabilities_fops); + return 0; } =20 @@ -474,6 +509,7 @@ static struct platform_driver amd_hfi_driver =3D { .acpi_match_table =3D ACPI_PTR(amd_hfi_platform_match), }, .probe =3D amd_hfi_probe, + .remove =3D amd_hfi_remove, }; =20 static int __init amd_hfi_init(void) --=20 2.43.0