Add Adreno performance hints

mace/core/runtime/opencl/opencl_extension.h

+//
+// Copyright (c) 2017 XiaoMi All rights reserved.
+//
+
+#ifndef MACE_CORE_RUNTIME_OPENCL_EXTENSION_H_
+#define MACE_CORE_RUNTIME_OPENCL_EXTENSION_H_
+
+#include "mace/core/runtime/opencl/cl2_header.h"
+
+// Adreno extensions
+// Adreno performance hints
+typedef cl_uint cl_perf_hint;
+
+#define CL_CONTEXT_PERF_HINT_QCOM 0x40C2
+#define CL_PERF_HINT_HIGH_QCOM 0x40C3
+#define CL_PERF_HINT_NORMAL_QCOM 0x40C4
+#define CL_PERF_HINT_LOW_QCOM 0x40C5
+
+// Adreno priority hints
+typedef cl_uint cl_priority_hint;
+
+#define CL_PRIORITY_HINT_NONE_QCOM 0
+#define CL_CONTEXT_PRIORITY_HINT_QCOM 0x40C9
+#define CL_PRIORITY_HINT_HIGH_QCOM 0x40CA
+#define CL_PRIORITY_HINT_NORMAL_QCOM 0x40CB
+#define CL_PRIORITY_HINT_LOW_QCOM 0x40CC
+
+#endif  // MACE_CORE_RUNTIME_OPENCL_EXTENSION_H_

mace/core/runtime/opencl/opencl_runtime.cc

@@ -7,6 +7,7 @@
 #include <memory>
 #include <mutex>
 
+#include "mace/core/runtime/opencl/opencl_extension.h"
 #include "mace/core/runtime/opencl/opencl_runtime.h"
 #include "mace/public/mace.h"
 #include "mace/utils/tuner.h"
@@ -108,9 +109,15 @@ OpenCLRuntime::OpenCLRuntime() {
     properties |= CL_QUEUE_PROFILING_ENABLE;
   }
 
-  // a context is like a "runtime link" to the device and platform;
-  // i.e. communication is possible
-  cl::Context context({gpu_device});
+  // TODO (heliangliang) Make this configurable (e.g.HIGH for benchmark,
+  // disabled for Mali)
+  cl_context_properties context_properties[] = {
+      // Set context perf hint to normal
+      CL_CONTEXT_PERF_HINT_QCOM, CL_PERF_HINT_NORMAL_QCOM,
+      // Set context priority hint to low
+      CL_CONTEXT_PRIORITY_HINT_QCOM, CL_PRIORITY_HINT_LOW_QCOM, 0};
+
+  cl::Context context({gpu_device}, context_properties);
   cl::CommandQueue command_queue(context, gpu_device, properties);
 
   const char *kernel_path = getenv("MACE_KERNEL_PATH");