hle: kernel: Add k_trace module.

src/core/CMakeLists.txt

@@ -204,6 +204,7 @@ add_library(core STATIC
     hle/kernel/k_thread.cpp
     hle/kernel/k_thread.h
     hle/kernel/k_thread_queue.h
+    hle/kernel/k_trace.h
     hle/kernel/k_writable_event.cpp
     hle/kernel/k_writable_event.h
     hle/kernel/kernel.cpp

src/core/hle/kernel/k_trace.h

@@ -0,0 +1,12 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+namespace Kernel {
+
+constexpr bool IsKTraceEnabled = false;
+constexpr std::size_t KTraceBufferSize = IsKTraceEnabled ? 16 * 1024 * 1024 : 0;
+
+} // namespace Kernel