atomic_sub_int
atomic_sub_int(&sc->ds_evtcnt, read);
atomic_sub_int(&sc->sc_tx_avail, used);
atomic_sub_int(&sc->sc_brightness_steps, 1);
atomic_sub_int(&sc->sc_brightness_steps, 1);
atomic_sub_int(&amountpipekva, size);
atomic_sub_int(total, len + mq_purge(mq));
atomic_sub_int(total, len);
atomic_sub_int(&la_hold_total, mq_purge(&la->la_mq));
atomic_sub_int(&la_hold_total, mq_purge(&la->la_mq) + 1);
atomic_sub_int(&la_hold_total,
atomic_sub_int(&la_hold_total, mq_purge(&la->la_mq));
atomic_sub_int(&ln_hold_total, mq_purge(&ln->ln_mq) + 1);
atomic_sub_int(&ln_hold_total,
atomic_sub_int(&ln_hold_total, len);
atomic_sub_int(&ln_hold_total, mq_purge(&ln->ln_mq));
atomic_sub_int(&ln_hold_total, mq_purge(&ln->ln_mq));
#ifndef atomic_sub_int
atomic_sub_int(&uvmexp.paging,
atomic_sub_int(&uvmexp.free, fcount);
atomic_sub_int(&uvmexp.percpucaches, upci->upci_npages);
atomic_sub_int(&uvmexp.swpages, npages);
atomic_sub_int(&uvmexp.swpginuse, nslots);