atomic_add_int_nv
((unsigned long)atomic_add_int_nv((unsigned int *)p, (unsigned int)v))
if (nfreed > 0 && atomic_add_int_nv(&sc->sc_txfree, nfreed) == nfreed)
used = atomic_add_int_nv(&sc->used_tx_bd, used);
startc = atomic_add_int_nv(&rnd_event_cons, QEVCONSUME) - QEVCONSUME;
#define atomic_add_int(_p, _v) ((void)atomic_add_int_nv((_p), (_v)))
#define atomic_inc_int_nv(_p) atomic_add_int_nv((_p), 1)
#ifndef atomic_add_int_nv