PERF_MEM_LVL_IO 1104 include/uapi/linux/perf_event.h #define PERF_MEM_LVL_IO 0x1000 /* I/O memory */ PERF_MEM_LVL_IO 1104 tools/include/uapi/linux/perf_event.h #define PERF_MEM_LVL_IO 0x1000 /* I/O memory */