atomic_fetchadd_32
#define MTW_CMDQ_GET(c) (atomic_fetchadd_32((c), 1) & MTW_CMDQ_MASQ)
#define RUN_CMDQ_GET(c) (atomic_fetchadd_32((c), 1) & RUN_CMDQ_MASQ)
p = atomic_fetchadd_32(&sc->sc_seq, 1);
header->flow_seq = htonl(atomic_fetchadd_32(&priv->flow_seq,
val = atomic_fetchadd_32(&cpu_mwait_inhibit_deep_sleep, set ? 1 : -1);