PERF_MEM_LVL_NA  1092 include/uapi/linux/perf_event.h #define PERF_MEM_LVL_NA		0x01  /* not available */
PERF_MEM_LVL_NA  1092 tools/include/uapi/linux/perf_event.h #define PERF_MEM_LVL_NA		0x01  /* not available */