PERF_ITRACE_PERIOD_NANOSECS
#define PERF_ITRACE_DEFAULT_PERIOD_TYPE PERF_ITRACE_PERIOD_NANOSECS
PERF_ITRACE_PERIOD_NANOSECS;
case PERF_ITRACE_PERIOD_NANOSECS:
if (pt->synth_opts.period_type == PERF_ITRACE_PERIOD_NANOSECS)
if (pt->synth_opts.period_type == PERF_ITRACE_PERIOD_NANOSECS)