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Wysocki" , Viresh Kumar , Shuah Khan , "Borislav Petkov" , Peter Zijlstra , Ingo Molnar , Giovanni Gherdovich , CC: Deepak Sharma , Alex Deucher , Mario Limonciello , Steven Noonan , Nathan Fontenot , Jinzhou Su , Xiaojian Du , , , Huang Rui Subject: [PATCH v5 16/22] cpupower: add the function to get the sysfs value from specific table Date: Tue, 30 Nov 2021 20:36:35 +0800 Message-ID: <20211130123641.1449041-17-ray.huang@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211130123641.1449041-1-ray.huang@amd.com> References: <20211130123641.1449041-1-ray.huang@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain 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-Office365-Filtering-Correlation-Id: 9e2ebbfa-71e3-42f0-d891-08d9b3fe471c X-MS-TrafficTypeDiagnostic: BY5PR12MB4163: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:3383; 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:(4636009)(46966006)(36840700001)(40470700001)(2906002)(5660300002)(7416002)(316002)(54906003)(83380400001)(26005)(336012)(81166007)(1076003)(508600001)(36756003)(7696005)(356005)(86362001)(4326008)(70586007)(426003)(70206006)(110136005)(40460700001)(186003)(36860700001)(8676002)(47076005)(82310400004)(16526019)(2616005)(8936002)(6666004)(15583001)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Nov 2021 12:38:14.5313 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9e2ebbfa-71e3-42f0-d891-08d9b3fe471c 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: BN8NAM11FT064.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB4163 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Expose the helper into cpufreq header, then cpufreq driver can use this function to get the sysfs value if it has any specific sysfs interfaces. Signed-off-by: Huang Rui --- tools/power/cpupower/lib/cpufreq.c | 21 +++++++++++++++------ tools/power/cpupower/lib/cpufreq.h | 12 ++++++++++++ 2 files changed, 27 insertions(+), 6 deletions(-) diff --git a/tools/power/cpupower/lib/cpufreq.c b/tools/power/cpupower/lib/cpufreq.c index c3b56db8b921..c011bca27041 100644 --- a/tools/power/cpupower/lib/cpufreq.c +++ b/tools/power/cpupower/lib/cpufreq.c @@ -83,20 +83,21 @@ static const char *cpufreq_value_files[MAX_CPUFREQ_VALUE_READ_FILES] = { [STATS_NUM_TRANSITIONS] = "stats/total_trans" }; - -static unsigned long sysfs_cpufreq_get_one_value(unsigned int cpu, - enum cpufreq_value which) +unsigned long cpufreq_get_sysfs_value_from_table(unsigned int cpu, + const char **table, + unsigned index, + unsigned size) { unsigned long value; unsigned int len; char linebuf[MAX_LINE_LEN]; char *endp; - if (which >= MAX_CPUFREQ_VALUE_READ_FILES) + if (!table || index >= size || !table[index]) return 0; - len = sysfs_cpufreq_read_file(cpu, cpufreq_value_files[which], - linebuf, sizeof(linebuf)); + len = sysfs_cpufreq_read_file(cpu, table[index], linebuf, + sizeof(linebuf)); if (len == 0) return 0; @@ -109,6 +110,14 @@ static unsigned long sysfs_cpufreq_get_one_value(unsigned int cpu, return value; } +static unsigned long sysfs_cpufreq_get_one_value(unsigned int cpu, + enum cpufreq_value which) +{ + return cpufreq_get_sysfs_value_from_table(cpu, cpufreq_value_files, + which, + MAX_CPUFREQ_VALUE_READ_FILES); +} + /* read access to files which contain one string */ enum cpufreq_string { diff --git a/tools/power/cpupower/lib/cpufreq.h b/tools/power/cpupower/lib/cpufreq.h index 95f4fd9e2656..107668c0c454 100644 --- a/tools/power/cpupower/lib/cpufreq.h +++ b/tools/power/cpupower/lib/cpufreq.h @@ -203,6 +203,18 @@ int cpufreq_modify_policy_governor(unsigned int cpu, char *governor); int cpufreq_set_frequency(unsigned int cpu, unsigned long target_frequency); +/* + * get the sysfs value from specific table + * + * Read the value with the sysfs file name from specific table. Does + * only work if the cpufreq driver has the specific sysfs interfaces. + */ + +unsigned long cpufreq_get_sysfs_value_from_table(unsigned int cpu, + const char **table, + unsigned index, + unsigned size); + #ifdef __cplusplus } #endif -- 2.25.1