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Wysocki" , Viresh Kumar , Shuah Khan , "Borislav Petkov" , Peter Zijlstra , Ingo Molnar , Giovanni Gherdovich , Steven Rostedt , CC: Deepak Sharma , Alex Deucher , Mario Limonciello , Steven Noonan , Nathan Fontenot , Jinzhou Su , Xiaojian Du , , , Huang Rui Subject: [PATCH v7 11/14] cpufreq: amd-pstate: Add AMD P-State frequencies attributes Date: Fri, 24 Dec 2021 09:05:05 +0800 Message-ID: <20211224010508.110159-12-ray.huang@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211224010508.110159-1-ray.huang@amd.com> References: <20211224010508.110159-1-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 SATLEXMB03.amd.com (10.181.40.144) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: aee38677-fe8a-42f6-5dd4-08d9c679a491 X-MS-TrafficTypeDiagnostic: DM8PR12MB5430:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5236; 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:SATLEXMB03.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(4636009)(36840700001)(40470700002)(46966006)(356005)(47076005)(83380400001)(36860700001)(110136005)(54906003)(336012)(4326008)(5660300002)(316002)(1076003)(2906002)(16526019)(7416002)(186003)(2616005)(81166007)(36756003)(7696005)(6666004)(426003)(26005)(8936002)(8676002)(70586007)(508600001)(86362001)(40460700001)(82310400004)(70206006)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Dec 2021 01:06:40.3031 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: aee38677-fe8a-42f6-5dd4-08d9c679a491 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=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT062.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM8PR12MB5430 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Introduce sysfs attributes to get the different level processor frequencies. Signed-off-by: Huang Rui --- drivers/cpufreq/amd-pstate.c | 47 ++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 9e23efc7b9eb..dbb7eee11170 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -509,6 +509,52 @@ static int amd_pstate_cpu_exit(struct cpufreq_policy *policy) return 0; } +/* Sysfs attributes */ + +/* + * This frequency is to indicate the maximum hardware frequency. + * If boost is not active but supported, the frequency will be larger than the + * one in cpuinfo. + */ +static ssize_t show_amd_pstate_max_freq(struct cpufreq_policy *policy, + char *buf) +{ + int max_freq; + struct amd_cpudata *cpudata; + + cpudata = policy->driver_data; + + max_freq = amd_get_max_freq(cpudata); + if (max_freq < 0) + return max_freq; + + return sprintf(&buf[0], "%u\n", max_freq); +} + +static ssize_t show_amd_pstate_lowest_nonlinear_freq(struct cpufreq_policy *policy, + char *buf) +{ + int freq; + struct amd_cpudata *cpudata; + + cpudata = policy->driver_data; + + freq = amd_get_lowest_nonlinear_freq(cpudata); + if (freq < 0) + return freq; + + return sprintf(&buf[0], "%u\n", freq); +} + +cpufreq_freq_attr_ro(amd_pstate_max_freq); +cpufreq_freq_attr_ro(amd_pstate_lowest_nonlinear_freq); + +static struct freq_attr *amd_pstate_attr[] = { + &amd_pstate_max_freq, + &amd_pstate_lowest_nonlinear_freq, + NULL, +}; + static struct cpufreq_driver amd_pstate_driver = { .flags = CPUFREQ_CONST_LOOPS | CPUFREQ_NEED_UPDATE_LIMITS, .verify = amd_pstate_verify, @@ -517,6 +563,7 @@ static struct cpufreq_driver amd_pstate_driver = { .exit = amd_pstate_cpu_exit, .set_boost = amd_pstate_set_boost, .name = "amd-pstate", + .attr = amd_pstate_attr, }; static int __init amd_pstate_init(void)