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Mon, 17 Apr 2023 18:34:39 -0500 Subject: [PATCH v4 4/7] x86/resctrl: Re-arrange RFTYPE flags and add more comments From: Babu Moger To: , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Date: Mon, 17 Apr 2023 18:34:38 -0500 Message-ID: <168177447844.1758847.17789021842152864417.stgit@bmoger-ubuntu> In-Reply-To: <168177435378.1758847.8317743523931859131.stgit@bmoger-ubuntu> References: <168177435378.1758847.8317743523931859131.stgit@bmoger-ubuntu> User-Agent: StGit/1.1.dev103+g5369f4c MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] 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: DM6NAM11FT086:EE_|SA0PR12MB4576:EE_ X-MS-Office365-Filtering-Correlation-Id: 30ae592f-4360-496a-6383-08db3f9c521b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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:(13230028)(7916004)(4636009)(396003)(39860400002)(376002)(136003)(346002)(451199021)(40470700004)(46966006)(36840700001)(54906003)(16576012)(110136005)(40480700001)(478600001)(16526019)(81166007)(316002)(83380400001)(41300700001)(356005)(82740400003)(426003)(336012)(4326008)(47076005)(36860700001)(186003)(26005)(9686003)(70206006)(70586007)(5660300002)(7406005)(44832011)(7416002)(2906002)(8936002)(8676002)(40460700003)(33716001)(103116003)(86362001)(82310400005)(71626016)(36900700001);DIR:OUT;SFP:1101; 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Signed-off-by: Babu Moger --- arch/x86/kernel/cpu/resctrl/internal.h | 49 +++++++++++++++++++++++++++++--- 1 file changed, 44 insertions(+), 5 deletions(-) diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h index c4fc5a1c630c..75ddbd833fdf 100644 --- a/arch/x86/kernel/cpu/resctrl/internal.h +++ b/arch/x86/kernel/cpu/resctrl/internal.h @@ -240,14 +240,53 @@ struct rdtgroup { /* * Define the file type flags for base and info directories. + * + * RESCTRL filesystem has two main components + * a. info + * b. base. + * + * /sys/fs/resctrl/ + * | + * --> info (Displays information about control and monitoring) + * | + * --> base (Displays the details on resctrl groups) + * + * ------------------------------------------------------------- + * info directory structure + * --> RFTYPE_INFO + * --> RFTYPE_TOP_INFO + * last_cmd_status + * + * --> RFTYPE_MON_INFO + * --> (L2_MON) + * --> (L3_MON) + * max_threshold_occupancy, mbm_local_bytes_config, + * mbm_total_bytes_config, mon_features, num_rmids + * + * --> RFTYPE_CTRL_INFO + * --> RFTYPE_RES_CACHE (L2, L3) + * bit_usage, cbm_mask, min_cbm_bits, num_closids, + * shareable_bits + * + * --> RFTYPE_RES_MB (MB, SMBA) + * bandwidth_gran, delay_linear, min_bandwidth, + * num_closids + * + * group structure + * ----------------------------------------------------------- + * --> RFTYPE_BASE (Files common for both MON and CTRL groups) + * cpus, cpus_list, tasks + * + * --> RFTYPE_CTRL_BASE (Files only for CTRL group) + * mode, schemata, size */ #define RFTYPE_INFO BIT(0) #define RFTYPE_BASE BIT(1) -#define RFTYPE_CTRL BIT(4) -#define RFTYPE_MON BIT(5) -#define RFTYPE_TOP BIT(6) -#define RFTYPE_RES_CACHE BIT(8) -#define RFTYPE_RES_MB BIT(9) +#define RFTYPE_CTRL BIT(2) +#define RFTYPE_MON BIT(3) +#define RFTYPE_TOP BIT(4) +#define RFTYPE_RES_CACHE BIT(5) +#define RFTYPE_RES_MB BIT(6) #define RFTYPE_CTRL_INFO (RFTYPE_INFO | RFTYPE_CTRL) #define RFTYPE_MON_INFO (RFTYPE_INFO | RFTYPE_MON) #define RFTYPE_TOP_INFO (RFTYPE_INFO | RFTYPE_TOP)