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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 11/22] cpufreq: amd: add amd-pstate frequencies attributes Date: Tue, 30 Nov 2021 20:36:30 +0800 Message-ID: <20211130123641.1449041-12-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: 1d0f7a45-62c6-4c9d-b3ad-08d9b3fe39fb X-MS-TrafficTypeDiagnostic: BN8PR12MB3507: 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)(40470700001)(16526019)(5660300002)(8936002)(4326008)(7416002)(186003)(47076005)(356005)(426003)(110136005)(36756003)(8676002)(86362001)(7696005)(2906002)(70206006)(54906003)(36860700001)(70586007)(82310400004)(83380400001)(1076003)(6666004)(508600001)(336012)(26005)(316002)(2616005)(40460700001)(81166007)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Nov 2021 12:37:52.5068 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1d0f7a45-62c6-4c9d-b3ad-08d9b3fe39fb 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: BN8NAM11FT017.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8PR12MB3507 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 | 46 ++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index c5d786af199d..d462d5a28e08 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -477,6 +477,51 @@ 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, @@ -485,6 +530,7 @@ 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