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cpupower: Initial AMD P-State capability

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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>
This commit is contained in:
Huang Rui 2022-02-22 23:34:19 +08:00 committed by Shuah Khan
parent 46c273a095
commit 083792f368
1 changed files with 13 additions and 0 deletions
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13
tools/power/cpupower/utils/helpers/cpuid.c
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@ -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) {