On 22-05-18, 04:42, George Cherian wrote: > Per Section 8.4.7.1.3 of ACPI 6.2, The platform provides performance > feedback via set of performance counters. To determine the actual > performance level delivered over time, OSPM may read a set of > performance counters from the Reference Performance Counter Register > and the Delivered Performance Counter Register. > > OSPM calculates the delivered performance over a given time period by > taking a beginning and ending snapshot of both the reference and > delivered performance counters, and calculating: > > delivered_perf = reference_perf X (delta of delivered_perf counter / delta of > reference_perf counter). > > Implement the above and hook this to the cpufreq->get method. > > Signed-off-by: George Cherian <george.cher...@cavium.com> > --- > drivers/cpufreq/cppc_cpufreq.c | 44 > ++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 44 insertions(+)
Acked-by: Viresh Kumar <viresh.ku...@linaro.org> -- viresh
