Add Profiling support for Variable store and added a specialized caching algorithm

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4015 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Include/Guid/VariableInfo.h

@@ -0,0 +1,44 @@
+/*++
+
+Copyright (c) 2006 - 2007, Intel Corporation
+All rights reserved. This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution.  The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+
+--*/
+
+#ifndef __VARIABLE_INFO_GUID_H__
+#define __VARIABLE_INFO_GUID_H__
+
+// {DDCF3616-3275-4164-98B6-FE85707FFE7D}
+#define EFI_VARIABLE_INFO_GUID \
+  { 0xddcf3616, 0x3275, 0x4164, { 0x98, 0xb6, 0xfe, 0x85, 0x70, 0x7f, 0xfe, 0x7d } }
+
+extern EFI_GUID gEfiVariableInfoGuid;
+
+
+typedef struct _VARIABLE_INFO_ENTRY  VARIABLE_INFO_ENTRY;
+
+//
+// This list gets put in the EFI system table. It is produced by the Variable driver at
+// Boot Services time and records read and write access to a given variable
+//
+struct _VARIABLE_INFO_ENTRY {
+  VARIABLE_INFO_ENTRY *Next;
+  EFI_GUID            VendorGuid;
+  CHAR16              *Name;
+  UINT32              Attributes;
+  UINT32              ReadCount;
+  UINT32              WriteCount;
+  UINT32              DeleteCount;
+  UINT32              CacheCount;
+  BOOLEAN             Volatile;
+};
+
+
+#endif