Add a flag to enable/disable debug output in many kernels. (#549)

* add DEBUG_LOG macro to enable/disable debug output

* fix syntax

* fix syntax again

* fix syntax one more time

* remove balnk spaces

* use ifdefs

* add the Print argument

* move the definition of DEBUG_LOG to ck.hpp

* add the missign argument to Print()

include/ck/tensor_operation/gpu/device/impl/device_gemm_xdl_splitk_c_shuffle.hpp

@@ -378,7 +378,7 @@ struct DeviceGemmXdlSplitKCShuffle : public DeviceGemmSplitK<ALayout,
     {
         using Argument = DeviceGemmXdlSplitKCShuffle::Argument;
 
-        void ShowInfo(const Argument& arg)
+        void Print(const Argument& arg)
         {
             std::cout << "arg.a_grid_desc_kbatch_k0_m_k1_{"
                       << arg.a_grid_desc_kbatch_k0_m_k1_.GetLength(I0) << ", "
@@ -398,7 +398,10 @@ struct DeviceGemmXdlSplitKCShuffle : public DeviceGemmSplitK<ALayout,
 
         float Run(const Argument& arg, const StreamConfig& stream_config = StreamConfig{})
         {
-            ShowInfo(arg);
+            if(stream_config.log_level_ > 0)
+            {
+                Print(arg);
+            }
 
             const auto kbatch = arg.a_grid_desc_kbatch_k0_m_k1_.GetLength(I0);
 

include/ck/tensor_operation/gpu/device/impl/device_grouped_gemm_xdl.hpp

@@ -500,6 +500,7 @@ struct DeviceGroupedGemm_Xdl : public DeviceGroupedGemm<ALayout,
 
             for(std::size_t i = 0; i < arg.gemm_desc_kernel_arg_.size(); i++)
             {
+#if DEBUG_LOG
                 std::cout << "group: " << i << " arg.a_grid_desc_ak0_m_ak1_{"
                           << arg.gemm_desc_kernel_arg_[i].a_grid_desc_ak0_m_ak1_.GetLength(I0)
                           << ", "
@@ -520,6 +521,7 @@ struct DeviceGroupedGemm_Xdl : public DeviceGroupedGemm<ALayout,
                           << arg.gemm_desc_kernel_arg_[i].e_grid_desc_m_n_.GetLength(I0) << ", "
                           << arg.gemm_desc_kernel_arg_[i].e_grid_desc_m_n_.GetLength(I1) << "}"
                           << std::endl;
+#endif
 
                 if(!GridwiseGemm::CheckValidity(arg.gemm_desc_kernel_arg_[i].a_grid_desc_m_k_,
                                                 arg.gemm_desc_kernel_arg_[i].b_grid_desc_n_k_,