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Mon, 7 Nov 2022 11:58:02 -0600 From: Perry Yuan To: , , CC: , , , , , , , , , Perry Yuan Subject: [PATCH v3 3/8] cpufreq: amd-pstate: change driver to be built-in type Date: Tue, 8 Nov 2022 01:57:00 +0800 Message-ID: <20221107175705.2207842-4-Perry.Yuan@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221107175705.2207842-1-Perry.Yuan@amd.com> References: <20221107175705.2207842-1-Perry.Yuan@amd.com> MIME-Version: 1.0 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-TrafficTypeDiagnostic: DM6NAM11FT110:EE_|LV2PR12MB5750:EE_ X-MS-Office365-Filtering-Correlation-Id: bf36bd7a-e805-465a-71a3-08dac0e9b027 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: fQGZVuG3DJ3i+uj7XNqGd0MV4bz61tK9+Y8U1rNslxRJVX+A9JMIOPm73F5GjIYixz0WaC1Da+1NspZAafm4XLa3X/pRoC7RGpT2Rusxrmlp6XjcYkhQa6ueAkzGgynYVuduXicAbiy0TbSIH275cFspB6afEaQeStxzNu49Mw3bte+eLMPAPh3bhhJ9HN1YrsGa77AfDV/YU+iXYF5MwppYK7BdCHQ5uHGgNCzgpVuXpUvzMr0P5Y8AdRAw9HPQswxW+Ce76k4ENai5M+hntD7eEHDl7qF9DgwySH+cAiBrFWp8Wau6N3Uvzb3Fz+eH2NqacuJp/4swlg3huuSdgngPD5dfshbWyQyM1///PFO68xOvFQpjvJ1p5k+CKFF9fhDbQyDLzt7P5yezx3JaISJpYswipJGyr2eNzauYuhrkpxfmSFZ/xI+MgOrLoZ90aavwZM13QjyxW3rJAPlWoI/+mAiHToagOEcM5sidx7n6dg/3NtD2WjkPc51V0f2LrvlJWRcy5sM0ONV32cKa1MYVb27QiJ9F0eJU28QupsCJX6fwQ+f7tQ+2q5aZmmYtTXRdxAVbX7zXEfE5mbmzQM++/YdOn0+sBtY3aE752iaejnKT5oLEfF99MkDAFW9ZLSnEj5bmCfST8phkCYmR6IUYmdgIQNyFiJKtetrIolTE3u//ZlbEZBC4rJQY7HrYMIrMUhEv/FX7NGHaHt7ybxpswKq/3/s7ICTG+Zl8tKoPVSLncLB9/SctgvT+k2yOZqS4CEr+GLQPgRDl1IgiyUUMjM4MjlkauqTZVkLx5B25qUs3r/3Nfv9ueQoJsqvl1WWlmQDnLpbU2M70DNaabA== 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:(13230022)(4636009)(376002)(346002)(136003)(39860400002)(396003)(451199015)(46966006)(36840700001)(40470700004)(478600001)(86362001)(81166007)(40480700001)(82310400005)(7696005)(110136005)(316002)(356005)(54906003)(4326008)(47076005)(40460700003)(8676002)(2906002)(83380400001)(336012)(26005)(82740400003)(36756003)(70586007)(70206006)(5660300002)(426003)(41300700001)(36860700001)(2616005)(186003)(8936002)(1076003)(16526019)(36900700001)(2101003);DIR:OUT;SFP:1101; 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Signed-off-by: Perry Yuan --- drivers/cpufreq/amd-pstate.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index ace7d50cf2ac..14906431dc15 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -59,10 +59,7 @@ * we disable it by default to go acpi-cpufreq on these processors and add a * module parameter to be able to enable it manually for debugging. */ -static bool shared_mem = false; -module_param(shared_mem, bool, 0444); -MODULE_PARM_DESC(shared_mem, - "enable amd-pstate on processors with shared memory solution (false = disabled (default), true = enabled)"); +static bool shared_mem __read_mostly; static struct cpufreq_driver amd_pstate_driver; @@ -653,16 +650,22 @@ static int __init amd_pstate_init(void) return ret; } +device_initcall(amd_pstate_init); -static void __exit amd_pstate_exit(void) +static int __init amd_pstate_param(char *str) { - cpufreq_unregister_driver(&amd_pstate_driver); + if (!str) + return -EINVAL; - amd_pstate_enable(false); -} + /* enable shared memory type CPPC ,if you processor has no MSR, you have to add this + * to your grub to make cppc driver loaded successfully. + */ + if (!strcmp(str, "legacy_cppc")) + shared_mem = true; -module_init(amd_pstate_init); -module_exit(amd_pstate_exit); + return 0; +} +early_param("amd-pstate", amd_pstate_param); MODULE_AUTHOR("Huang Rui "); MODULE_DESCRIPTION("AMD Processor P-state Frequency Driver");