linux/tools/power
Nathan Fontenot a0255a76bf cpupower: Add CPUPOWER_CAP_AMD_HW_PSTATE cpuid caps flag
Add a check in get_cpu_info() for the ability to read frequencies
from hardware and set the CPUPOWER_CAP_AMD_HW_PSTATE cpuid flag.
The cpuid flag is set when CPUID_80000007_EDX[7] is set,
which is all families >= 10h. The check excludes family 14h
because HW pstate reporting was not implemented on family 14h.

This is intended to reduce family checks in the main code paths.

Signed-off-by: Nathan Fontenot <nathan.fontenot@amd.com>
Reviewed-by: Robert Richter <rrichter@amd.com>
Reviewed-by: skhan@linuxfoundation.org
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2021-01-26 09:40:15 -07:00
..
acpi
cpupower cpupower: Add CPUPOWER_CAP_AMD_HW_PSTATE cpuid caps flag 2021-01-26 09:40:15 -07:00
pm-graph pm-graph v5.8 2020-11-23 18:20:28 +01:00
x86 Kbuild updates for v5.11 2020-12-22 14:02:39 -08:00