rename TensoCopy (#38036)

paddle/pten/kernels/hybird/cuda/reduce/reduce_cuda_impl.h

@@ -769,7 +769,7 @@ static void LaunchReduceKernel(const Tx* x_data,
   }
 }
 
-void TensorCopy(const DenseTensor& src, DenseTensor* dst) {
+static void AsyncCopy(const DenseTensor& src, DenseTensor* dst) {
   paddle::platform::DeviceContextPool& pool =
       paddle::platform::DeviceContextPool::Instance();
   const paddle::platform::CUDADeviceContext* dev_ctx;
@@ -817,7 +817,7 @@ void TensorReduceFunctorImpl(const pten::DenseTensor& x,
   if (config.reduce_num == 1) {
     auto out_dims = y->dims();
     if (x.dtype() == y->dtype()) {
-      TensorCopy(x, y);
+      AsyncCopy(x, y);
       y->Resize(out_dims);
     } else {
       PD_VISIT_ALL_TYPES(y->dtype(), "CastKernelImpl", ([&] {