perf_event_system_wide: testing various DOMAIN and GRANULARITY settings
perf_event_system_wide: testing various DOMAIN and GRANULARITY settings

pushing the limits of PAPI/perf_event trying to see why system-wide
measurement doesn't work.

pyrovski/papi,pyrovski/papi,arm-hpc/papi,arm-hpc/papi,pyrovski/papi,arm-hpc/papi,arm-hpc/papi,pyrovski/papi,arm-hpc/papi,pyrovski/papi,arm-hpc/papi,pyrovski/papi,pyrovski/papi,pyrovski/papi,arm-hpc/papi