PERF_TOOL_PMU_TYPE_TOOL_MASK
to_read_pmus |= PERF_TOOL_PMU_TYPE_TOOL_MASK;
if ((to_read_types & PERF_TOOL_PMU_TYPE_TOOL_MASK) != 0 &&
(read_pmu_types & PERF_TOOL_PMU_TYPE_TOOL_MASK) == 0) {
to_read_pmus = PERF_TOOL_PMU_TYPE_TOOL_MASK;
PERF_TOOL_PMU_TYPE_TOOL_MASK;
PERF_TOOL_PMU_TYPE_TOOL_MASK;