| Message ID | 20220216073558.751071-4-ray.huang@amd.com |
|---|---|
| State | Superseded |
| Headers | show
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From: Huang Rui <ray.huang@amd.com>
To: Shuah Khan <skhan@linuxfoundation.org>,
"Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
<linux-pm@vger.kernel.org>
CC: Deepak Sharma <deepak.sharma@amd.com>,
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Mario Limonciello <mario.limonciello@amd.com>,
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Steven Rostedt <rostedt@goodmis.org>,
"Giovanni Gherdovich" <ggherdovich@suse.cz>,
<linux-kernel@vger.kernel.org>, Huang Rui <ray.huang@amd.com>
Subject: [PATCH RESEND v6 3/9] cpupower: Initial AMD P-State capability
Date: Wed, 16 Feb 2022 15:35:52 +0800
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|
| Series |
cpupower: Add AMD P-State Support
|
expand
|
diff --git a/tools/power/cpupower/utils/helpers/cpuid.c b/tools/power/cpupower/utils/helpers/cpuid.c index 72eb43593180..eae91f11d187 100644 --- a/tools/power/cpupower/utils/helpers/cpuid.c +++ b/tools/power/cpupower/utils/helpers/cpuid.c @@ -149,6 +149,19 @@ int get_cpu_info(struct cpupower_cpu_info *cpu_info) if (ext_cpuid_level >= 0x80000008 && cpuid_ebx(0x80000008) & (1 << 4)) cpu_info->caps |= CPUPOWER_CAP_AMD_RDPRU; + + if (cpupower_amd_pstate_enabled()) { + cpu_info->caps |= CPUPOWER_CAP_AMD_PSTATE; + + /* + * If AMD P-State is enabled, the firmware will treat + * AMD P-State function as high priority. + */ + cpu_info->caps &= ~CPUPOWER_CAP_AMD_CPB; + cpu_info->caps &= ~CPUPOWER_CAP_AMD_CPB_MSR; + cpu_info->caps &= ~CPUPOWER_CAP_AMD_HW_PSTATE; + cpu_info->caps &= ~CPUPOWER_CAP_AMD_PSTATEDEF; + } } if (cpu_info->vendor == X86_VENDOR_INTEL) {
If kernel starts the AMD P-State module, the cpupower will initial the capability flag as CPUPOWER_CAP_AMD_PSTATE. And once AMD P-State capability is set, it won't need to set legacy ACPI relative capabilities anymore. Signed-off-by: Huang Rui <ray.huang@amd.com> --- tools/power/cpupower/utils/helpers/cpuid.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)