PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT 174 include/uapi/linux/perf_event.h PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT = 11, /* call/ret stack */ PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT 174 tools/include/uapi/linux/perf_event.h PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT = 11, /* call/ret stack */