KDECR
#define KIPDECR(p, vn) KDECR(p, bi_kstats, vn)
#define KLDECR(vn) KDECR(tll, tll_kstats, vn)
#define KCDECR(vn) KDECR(tcl, tcl_kstats, vn)
KDECR(tcl->tcl_ctrl_tll, tll_kstats,