diff options
| author |   Huang Rui <ray.huang@amd.com> | 2022-02-22 23:34:19 +0800 |
|---|---|---|
| committer |   Shuah Khan <skhan@linuxfoundation.org> | 2022-02-22 18:36:39 -0700 |
| commit | 083792f368b8ceea7ae035b6641e9cef3aceb366 (patch) | |
| tree | c43630d689d3fde3abb0e77bda8c2c9abba33e4d /tools/power/cpupower/utils/helpers/cpuid.c | |
| parent | cpupower: Add the function to check AMD P-State enabled (diff) | |
| download | linux-dev-083792f368b8ceea7ae035b6641e9cef3aceb366.tar.xz linux-dev-083792f368b8ceea7ae035b6641e9cef3aceb366.zip | |
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>
Diffstat (limited to '')
| -rw-r--r-- | tools/power/cpupower/utils/helpers/cpuid.c | 13 |
1 files changed, 13 insertions, 0 deletions
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 @@ out: 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) { |