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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 11/21] cpufreq: amd: add amd-pstate frequencies attributes Date: Fri, 29 Oct 2021 21:02:31 +0800 Message-ID: <20211029130241.1984459-12-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 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: 0b1114c0-bebc-48df-36b9-08d99adc99bf X-MS-TrafficTypeDiagnostic: BY5PR12MB4130: 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:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(4636009)(46966006)(36840700001)(47076005)(16526019)(26005)(70586007)(70206006)(7696005)(86362001)(426003)(316002)(5660300002)(8676002)(186003)(83380400001)(336012)(1076003)(508600001)(110136005)(356005)(36756003)(6666004)(82310400003)(8936002)(2616005)(54906003)(7416002)(81166007)(2906002)(36860700001)(4326008)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Oct 2021 13:04:11.2134 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0b1114c0-bebc-48df-36b9-08d99adc99bf 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: BN8NAM11FT003.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB4130 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce sysfs attributes to get the different level processor frequencies. Signed-off-by: Huang Rui --- drivers/cpufreq/amd-pstate.c | 63 ++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 9af27ac1f818..8cf1e80f44e0 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -485,6 +485,68 @@ 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_nominal_freq(struct cpufreq_policy *policy, + char *buf) +{ + int nominal_freq; + struct amd_cpudata *cpudata; + + cpudata = policy->driver_data; + + nominal_freq = amd_get_nominal_freq(cpudata); + if (nominal_freq < 0) + return nominal_freq; + + return sprintf(&buf[0], "%u\n", nominal_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_nominal_freq); +cpufreq_freq_attr_ro(amd_pstate_lowest_nonlinear_freq); + +static struct freq_attr *amd_pstate_attr[] = { + &amd_pstate_max_freq, + &amd_pstate_nominal_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, @@ -493,6 +555,7 @@ 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) -- 2.25.1