imsic_mrif_atomic_rmw
imsic_mrif_atomic_rmw(__mrif, __ptr, __new_val, -1UL)
old_val = imsic_mrif_atomic_rmw(mrif, &mrif->eidelivery,
old_val = imsic_mrif_atomic_rmw(mrif, &mrif->eithreshold,
old_val = imsic_mrif_atomic_rmw(mrif, ei, new_val, wr_mask);