fix gpu build error

paddle/operators/cross_entropy_op.cu

@@ -56,7 +56,7 @@ class CrossEntropyOpCUDAKernel : public framework::OpKernel<T> {
     y->mutable_data<T>(ctx.GetPlace());
 
     math::CrossEntropyFunctor<platform::GPUPlace, T>()(
-        ctx, y, x, label, ctx.Attr<bool>("softLabel"));
+        ctx.device_context(), y, x, label, ctx.Attr<bool>("softLabel"));
   }
 };
 

paddle/operators/math/cross_entropy.cu

@@ -74,7 +74,7 @@ using Tensor = framework::Tensor;
 template <typename T>
 class CrossEntropyFunctor<platform::GPUPlace, T> {
  public:
-  void operator()(const framework::DeviceContext& ctx, framework::Tensor* out,
+  void operator()(const platform::DeviceContext& ctx, framework::Tensor* out,
                   const framework::Tensor* prob,
                   const framework::Tensor* labels, bool softLabel) {
     const T* prob_data = prob->data<T>();

paddle/operators/softmax_with_cross_entropy_op.cu

@@ -69,7 +69,8 @@ class SoftmaxWithCrossEntropyCUDAKernel : public framework::OpKernel<T> {
     math::SoftmaxFunctor<platform::GPUPlace, T>()(context.device_context(),
                                                   logits, softmax);
     math::CrossEntropyFunctor<platform::GPUPlace, T>()(
-        context, loss, softmax, labels, context.Attr<bool>("softLabel"));
+        context.device_context(), loss, softmax, labels,
+        context.Attr<bool>("softLabel"));
   }
 };
 

paddle/platform/device_context_test.cc

@@ -24,7 +24,7 @@ TEST(Device, Init) {
   for (int i = 0; i < count; i++) {
     DeviceContext* device_context = new CUDADeviceContext(GPUPlace(i));
     Eigen::GpuDevice* gpu_device =
-        device_context->template get_eigen_device<Eigen::GpuDevice>();
+        device_context->template GetEigenDevice<GPUPlace>();
     ASSERT_NE(nullptr, gpu_device);
     delete device_context;
   }