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Based on the Open-Source Register Reference for AMD Family 17h Processors Models 00h-2Fh: https://support.amd.com/TechDocs/56255_OSRR.pdf These processors report RAPL support in bit 14 of CPUID 0x80000007 EDX, and the following MSRs are present: 0xc0010299 (RAPL_PWR_UNIT), like Intel's RAPL_POWER_UNIT 0xc001029a (CORE_ENERGY_STAT), kind of like Intel's PP0_ENERGY_STATUS 0xc001029b (PKG_ENERGY_STAT), like Intel's PKG_ENERGY_STATUS A notable difference from the Intel implementation is that AMD reports the "Cores" energy usage separately for each core, rather than a per-package total. The code has been adjusted to handle either case in a generic way. I haven't yet enabled collection of package power, due to being unable to test it on multi-node systems (TR, EPYC). Signed-off-by: Calvin Walton <calvin.walton@kepstin.ca> Signed-off-by: Len Brown <len.brown@intel.com> |
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