X_SUM
if (namelist[X_SUM].n_type == 0 &&
strcmp(namelist[X_SUM].n_name, "_vm_cnt") == 0) {
namelist[X_SUM].n_name = "_cnt";
kread(X_SUM, &vm_cnt, sizeof(vm_cnt));
[X_SUM] = { .n_name = "_vm_cnt", },