| Message ID | 20210908150001.3702552-10-ray.huang@amd.com |
|---|---|
| State | New |
| Headers | show
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Wysocki" <rafael.j.wysocki@intel.com>, Viresh Kumar <viresh.kumar@linaro.org>, Shuah Khan <skhan@linuxfoundation.org>, "Borislav Petkov" <bp@suse.de>, Ingo Molnar <mingo@kernel.org>, <linux-pm@vger.kernel.org> CC: Deepak Sharma <deepak.sharma@amd.com>, Alex Deucher <alexander.deucher@amd.com>, Mario Limonciello <mario.limonciello@amd.com>, Nathan Fontenot <nathan.fontenot@amd.com>, Jinzhou Su <Jinzhou.Su@amd.com>, Xiaojian Du <Xiaojian.Du@amd.com>, <linux-kernel@vger.kernel.org>, <x86@kernel.org>, Huang Rui <ray.huang@amd.com> Subject: [PATCH 09/19] cpufreq: amd: add amd-pstate checking support check attribute Date: Wed, 8 Sep 2021 22:59:51 +0800 Message-ID: <20210908150001.3702552-10-ray.huang@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210908150001.3702552-1-ray.huang@amd.com> References: <20210908150001.3702552-1-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: c2d8abba-6be8-4114-35ea-08d972d98b95 X-MS-TrafficTypeDiagnostic: MWHPR12MB1487: X-Microsoft-Antispam-PRVS: <MWHPR12MB14871EF4BC004A35B4B69805ECD49@MWHPR12MB1487.namprd12.prod.outlook.com> X-MS-Oob-TLC-OOBClassifiers: OLM:541; 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)(346002)(136003)(376002)(39860400002)(396003)(36840700001)(46966006)(16526019)(186003)(70586007)(86362001)(5660300002)(478600001)(82310400003)(8676002)(70206006)(36756003)(82740400003)(110136005)(8936002)(316002)(356005)(336012)(7696005)(1076003)(81166007)(47076005)(2906002)(54906003)(6666004)(26005)(83380400001)(426003)(36860700001)(2616005)(4326008)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Sep 2021 15:01:32.3368 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: c2d8abba-6be8-4114-35ea-08d972d98b95 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: CO1NAM11FT057.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR12MB1487 Precedence: bulk List-ID: <linux-pm.vger.kernel.org> X-Mailing-List: linux-pm@vger.kernel.org |
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[01/19] x86/cpufreatures: add AMD CPPC extension feature flag
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diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 67a9a117f524..48dedd5af101 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -577,6 +577,19 @@ static int amd_pstate_cpu_exit(struct cpufreq_policy *policy) return 0; } +static ssize_t show_is_amd_pstate_enabled(struct cpufreq_policy *policy, + char *buf) +{ + return sprintf(&buf[0], "%d\n", acpi_cpc_valid() ? 1 : 0); +} + +cpufreq_freq_attr_ro(is_amd_pstate_enabled); + +static struct freq_attr *amd_pstate_attr[] = { + &is_amd_pstate_enabled, + NULL, +}; + static struct cpufreq_driver amd_pstate_driver = { .flags = CPUFREQ_CONST_LOOPS | CPUFREQ_NEED_UPDATE_LIMITS, .verify = amd_pstate_verify, @@ -586,6 +599,7 @@ 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)
The amd-pstate hardware support check will be needed by cpupower to know whether amd-pstate is enabled and supported. Signed-off-by: Huang Rui <ray.huang@amd.com> --- drivers/cpufreq/amd-pstate.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)