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Wysocki" , Viresh Kumar , Shuah Khan , "Borislav Petkov" , Peter Zijlstra , Ingo Molnar , CC: Deepak Sharma , Alex Deucher , Mario Limonciello , Nathan Fontenot , Jinzhou Su , Xiaojian Du , , , Huang Rui Subject: [PATCH v2 16/21] cpupower: add the function to get the sysfs value from specific table Date: Sun, 26 Sep 2021 17:06:00 +0800 Message-ID: <20210926090605.3556134-17-ray.huang@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210926090605.3556134-1-ray.huang@amd.com> References: <20210926090605.3556134-1-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: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: ae464b3e-17a7-4a0d-64cc-08d980cd0ecc X-MS-TrafficTypeDiagnostic: BY5PR12MB4244: 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)(36840700001)(46966006)(6666004)(83380400001)(86362001)(54906003)(5660300002)(16526019)(36860700001)(2906002)(110136005)(316002)(336012)(36756003)(8676002)(8936002)(186003)(2616005)(1076003)(81166007)(356005)(4326008)(26005)(70206006)(70586007)(426003)(508600001)(7696005)(47076005)(82310400003)(15583001)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Sep 2021 09:07:25.2933 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ae464b3e-17a7-4a0d-64cc-08d980cd0ecc 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: CO1NAM11FT053.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB4244 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..02719cc400a1 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 && !table[index] && index >= size) 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