pub unsafe extern "C" fn atg__efficient_attention_backward(
    out__: *mut *mut C_tensor,
    grad_out__: *mut C_tensor,
    query_: *mut C_tensor,
    key_: *mut C_tensor,
    value_: *mut C_tensor,
    out_: *mut C_tensor,
    logsumexp_: *mut C_tensor,
    is_causal_: c_int,
    chunk_grad_outputs_: c_int
)