On Thu, 19 Oct 2017, kan.li...@intel.com wrote: > As of Skylake Server, there are a number of free-running counters in > each IIO Box that collect counts for per box IO clocks and per Port > Input/Output x BW/Utilization. > > Freerunning counters cannot be written by SW. Counting will be suspended > only when the IIO Box is powered down.
Free running counters are read only and always active when the IIO box is powered up. > > The bit width of freerunning counter is 36-bit. Please use 'free running' consistently all over the place. Thanks, tglx