rm_sleep
rm_sleep(ch, &sysctllock, 0, wmesg, timo)
rm_sleep(sc, &sc->vxl_lock, 0, "vxlint", hz);
rm_sleep(sc, &sc->vxl_lock, 0, "vxltrn", hz);
rm_sleep(sc, &sc->vxl_lock, 0, "vxldrn", hz);