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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 v3 16/21] cpupower: add the function to get the sysfs value from specific table Date: Fri, 29 Oct 2021 21:02:36 +0800 Message-ID: <20211029130241.1984459-17-ray.huang@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211029130241.1984459-1-ray.huang@amd.com> References: <20211029130241.1984459-1-ray.huang@amd.com> MIME-Version: 1.0 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: 3433a568-fcff-46af-f666-08d99adca877 X-MS-TrafficTypeDiagnostic: MN2PR12MB4422: 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: 5vLWa+uZfncRhDxJErpaRhVvvwI1nDh3mkO0UTGj5DaxTmoQjHaiqky/lEDUBqUu2clnznn2vBiC/eU4U2NkdLRnoyQjw586DDWwcLG1Fq2BLKPJWssElwAsPo6Cb8DpqOQRMY9UYc13xV86oJHTeoo6RC6Uk8i8ra5FOGdTzbzNK1bXcKN9YXNHjoOqvA1dChNWjx31BB+5HCXXzrjDAimGHt0SxLMgLHoYIEo9U2kMzh4dwn4gOFCpcfMmhT3jgrqlicR3OZGHG4ci1KpepHEdOW6ppd6kf9vy/BaMqQRsRVgaQiR0anLJ4Lt4TZDz7un8uNc+BCbHIg86DGgGhAi9+XDgLdphV8bP665TCY55zqcUJqgB4lZ86v7qYaNVgY05lTfXsF6m/Dl+0jXff50XIGxtUebZs7QPW1NluuD8apRSevYe4nfYj0HX/IrEubFE7SSWyp3P0jWvoztd724UxkXbtVBIeeYLkDBMxWnnaYGZn9SSyUCOgvfh01N8EEK2RL6oKVd6gGmmscfTg8M10pNgGKvIiKHGLxS5hZkO3Tv+RX6qUIg00pd4pDdAmbQVsphkFCahmha6S3KtjbuoPq7PofCO9q+8KWDC35clod9vhQrcVa6QM/nvzF3lJZ9FWONBSav+3EM6FQAZLpFnHITgIk1k8fmY4FVbEXpBpap93XJxDJth4rxj11MgqlWvaeFwvpZs+paSCdl7KbqzGYxoVQvw4Afu3t4Oa0RhXTltga1aOVvtAXLLmIC8ghLyIvNPPsxD6fCalXRA1g== 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)(5660300002)(70586007)(70206006)(316002)(36860700001)(2616005)(426003)(26005)(16526019)(86362001)(336012)(8936002)(186003)(2906002)(47076005)(36756003)(83380400001)(356005)(4326008)(508600001)(54906003)(110136005)(8676002)(82310400003)(7696005)(7416002)(1076003)(81166007)(15583001)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Oct 2021 13:04:35.9112 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3433a568-fcff-46af-f666-08d99adca877 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: BN8NAM11FT050.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4422 Precedence: bulk List-ID: X-Mailing-List: linux-pm@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