diff --git a/include/diopi/functions.h b/include/diopi/functions.h
index 76bdac9..a329235 100644
--- a/include/diopi/functions.h
+++ b/include/diopi/functions.h
@@ -176,6 +176,9 @@ DIOPI_API diopiError_t diopiSigmoidFocalLossBackward(diopiContextHandle_t ctx, d
 DIOPI_API diopiError_t diopiCrossEntropyLoss(diopiContextHandle_t ctx, diopiTensorHandle_t out, diopiConstTensorHandle_t input,
                                              diopiConstTensorHandle_t target, diopiConstTensorHandle_t weight, diopiReduction_t reduction,
                                              int64_t ignore_index, double label_smoothing);
+DIOPI_API diopiError_t diopiCrossEntropyLossBackward(diopiContextHandle_t ctx, diopiTensorHandle_t grad_input, diopiConstTensorHandle_t grad_output,
+                                                     diopiConstTensorHandle_t input, diopiConstTensorHandle_t target, diopiConstTensorHandle_t weight,
+                                                     diopiReduction_t reduction, int64_t ignore_index, double label_smoothing);
 
 /**
  * \brief Measures thee nll loss between the target and input probabilities.
@@ -307,6 +310,11 @@ DIOPI_API diopiError_t diopiClampMinInp(diopiContextHandle_t ctx, diopiTensorHan
 DIOPI_API diopiError_t diopiClampMinScalar(diopiContextHandle_t ctx, diopiTensorHandle_t out, diopiConstTensorHandle_t input, const diopiScalar_t* min);
 DIOPI_API diopiError_t diopiClampMin(diopiContextHandle_t ctx, diopiTensorHandle_t out, diopiConstTensorHandle_t input, diopiConstTensorHandle_t min);
 
+/**
+ * \brief Fills elements of self tensor with value.
+ */
+DIOPI_API diopiError_t diopiFill(diopiContextHandle_t ctx, diopiTensorHandle_t input, const diopiScalar_t* value);
+
 /**
  * \brief Computes the element-wise logical AND/OR of the given input tensors.
  */
@@ -445,6 +453,8 @@ DIOPI_API diopiError_t diopiNonzero(diopiContextHandle_t ctx, diopiTensorHandle_
  */
 DIOPI_API diopiError_t diopiLinear(diopiContextHandle_t ctx, diopiTensorHandle_t out, diopiConstTensorHandle_t input,
                                    diopiConstTensorHandle_t weight, diopiConstTensorHandle_t bias);
+DIOPI_API diopiError_t diopiLinearBackward(diopiContextHandle_t ctx, diopiTensorHandle_t grad_input, diopiTensorHandle_t grad_weight, diopiTensorHandle_t grad_bias,
+                                           diopiConstTensorHandle_t grad_output, diopiConstTensorHandle_t input, diopiConstTensorHandle_t weight);
 
 /**
  * \brief
@@ -806,6 +816,7 @@ DIOPI_API diopiError_t diopiUpsampleLinear(diopiContextHandle_t ctx, diopiTensor
                                            bool align_corners, const char* mode);
 DIOPI_API diopiError_t diopiUpsampleLinearBackward(diopiContextHandle_t ctx,  diopiTensorHandle_t grad_input, diopiConstTensorHandle_t grad_output,
                                                    diopiSize_t out_size, diopiSize_t in_size, bool align_corners, const char* mode);
+
 #if defined(__cplusplus)
 }
 #endif // __cplusplus