cpr_scan_kvseg
{(struct seg **)&kvseg, cpr_scan_kvseg, KSEG_SEG_ADDR},
segkmem_cnt += cpr_scan_kvseg(mapflag, bitfunc, &kvseg);
extern pgcnt_t cpr_scan_kvseg(int mapflag, bitfunc_t bitfunc, struct seg *seg);