Commit 083792f3 authored by Huang Rui's avatar Huang Rui Committed by Shuah Khan
Browse files

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: default avatarShuah Khan <skhan@linuxfoundation.org>
Signed-off-by: default avatarHuang Rui <ray.huang@amd.com>
Signed-off-by: default avatarShuah Khan <skhan@linuxfoundation.org>
parent 46c273a0

tools/power/cpupower/utils/helpers/cpuid.c

+13 −0
Original line number Diff line number Diff line
@@ -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) {