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cpupower: Initial AMD P-State capability
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. Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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@ -149,6 +149,19 @@ int get_cpu_info(struct cpupower_cpu_info *cpu_info)
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if (ext_cpuid_level >= 0x80000008 &&
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cpuid_ebx(0x80000008) & (1 << 4))
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cpu_info->caps |= CPUPOWER_CAP_AMD_RDPRU;
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if (cpupower_amd_pstate_enabled()) {
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cpu_info->caps |= CPUPOWER_CAP_AMD_PSTATE;
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/*
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* If AMD P-State is enabled, the firmware will treat
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* AMD P-State function as high priority.
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*/
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cpu_info->caps &= ~CPUPOWER_CAP_AMD_CPB;
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cpu_info->caps &= ~CPUPOWER_CAP_AMD_CPB_MSR;
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cpu_info->caps &= ~CPUPOWER_CAP_AMD_HW_PSTATE;
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cpu_info->caps &= ~CPUPOWER_CAP_AMD_PSTATEDEF;
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}
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}
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if (cpu_info->vendor == X86_VENDOR_INTEL) {
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