Commit 538d505f authored by Patryk Wlazlyn's avatar Patryk Wlazlyn Committed by Len Brown
Browse files

tools/power turbostat: Read base_hz and bclk from CPUID.16H if available 



If MSRs cannot be read, values can be obtained from cpuid.

Signed-off-by: default avatarPatryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent fb5ceca0

tools/power/x86/turbostat/turbostat.c

+9 −0
Original line number Diff line number Diff line
@@ -5848,6 +5848,15 @@ void process_cpuid() 
		base_mhz = max_mhz = bus_mhz = edx = 0;



		__cpuid(0x16, base_mhz, max_mhz, bus_mhz, edx);



		bclk = bus_mhz;



		base_hz = base_mhz * 1000000;

		has_base_hz = 1;



		if (platform->enable_tsc_tweak)

			tsc_tweak = base_hz / tsc_hz;



		if (!quiet)

			fprintf(outf, "CPUID(0x16): base_mhz: %d max_mhz: %d bus_mhz: %d\n",

				base_mhz, max_mhz, bus_mhz);