perf_pmu__format_bits
mask = perf_pmu__format_bits(intel_pt_pmu, str);
mtc_freq_bits = perf_pmu__format_bits(intel_pt_pmu, "mtc_period");
bits = perf_pmu__format_bits(intel_pt_pmu, name);
bits |= perf_pmu__format_bits(pmu, term->config);
__u64 perf_pmu__format_bits(const struct perf_pmu *pmu, const char *name);