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MdeModulePkg Variable: Enhance variable performance by reading from existed memory cache.

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Current variable driver already have memory cache to improve performance.
Change the code which read from physical MMIO address to read from memory cache.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Derek Lin <derek.lin2@hpe.com>
Reviewed-by: Samer El-Haj-Mahmoud <elhaj@hpe.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18654 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Derek Lin
2015-10-23 05:28:38 +00:00
committed by lzeng14
parent fbd2dfadfe
commit 9b18845a4b
2 changed files with 45 additions and 34 deletions
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27
MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c
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@@ -4,6 +4,7 @@
Copyright (C) 2013, Red Hat, Inc.
Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
(C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>
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
@@ -16,18 +17,19 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include "Variable.h"
extern VARIABLE_STORE_HEADER *mNvVariableCache;
extern VARIABLE_INFO_ENTRY *gVariableInfo;
EFI_HANDLE mHandle = NULL;
EFI_EVENT mVirtualAddressChangeEvent = NULL;
EFI_EVENT mFtwRegistration = NULL;
extern BOOLEAN mEndOfDxe;
VOID ***mVarCheckAddressPointer = NULL;
UINTN mVarCheckAddressPointerCount = 0;
EDKII_VARIABLE_LOCK_PROTOCOL mVariableLock = { VariableLockRequestToLock };
EDKII_VAR_CHECK_PROTOCOL mVarCheck = { VarCheckRegisterSetVariableCheckHandler,
VarCheckVariablePropertySet,
VarCheckVariablePropertyGet };
extern VARIABLE_STORE_HEADER *mNvVariableCache;
extern EFI_FIRMWARE_VOLUME_HEADER *mNvFvHeaderCache;
extern VARIABLE_INFO_ENTRY *gVariableInfo;
EFI_HANDLE mHandle = NULL;
EFI_EVENT mVirtualAddressChangeEvent = NULL;
EFI_EVENT mFtwRegistration = NULL;
extern BOOLEAN mEndOfDxe;
VOID ***mVarCheckAddressPointer = NULL;
UINTN mVarCheckAddressPointerCount = 0;
EDKII_VARIABLE_LOCK_PROTOCOL mVariableLock = { VariableLockRequestToLock };
EDKII_VAR_CHECK_PROTOCOL mVarCheck = { VarCheckRegisterSetVariableCheckHandler,
VarCheckVariablePropertySet,
VarCheckVariablePropertyGet };
/**
Return TRUE if ExitBootServices () has been called.
@@ -243,6 +245,7 @@ VariableClassAddressChangeEvent (
EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->VariableGlobal.HobVariableBase);
EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal);
EfiConvertPointer (0x0, (VOID **) &mNvVariableCache);
EfiConvertPointer (0x0, (VOID **) &mNvFvHeaderCache);
if (mAuthContextOut.AddressPointer != NULL) {
for (Index = 0; Index < mAuthContextOut.AddressPointerCount; Index++) {