PERF_MEM_LVL_NA   181 tools/perf/util/mem-events.c 	u64 m =  PERF_MEM_LVL_NA;
PERF_MEM_LVL_NA  1151 tools/perf/util/sort.c 		data_src_l.mem_lvl = PERF_MEM_LVL_NA;
PERF_MEM_LVL_NA  1156 tools/perf/util/sort.c 		data_src_r.mem_lvl = PERF_MEM_LVL_NA;