HISTC_MEM_LVL     200 tools/perf/util/hist.c 	hists__new_col_len(hists, HISTC_MEM_LVL, 21 + 3);
HISTC_MEM_LVL    1379 tools/perf/util/sort.c 	.se_width_idx	= HISTC_MEM_LVL,