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/** @file
Performance Library used in SMM phase.
This library instance provides infrastructure for SMM drivers to log performance
data. It consumes SMM PerformanceEx or Performance Protocol published by SmmCorePerformanceLib
to log performance data. If both SMM PerformanceEx and Performance Protocol are not available, it does not log any
performance information.
Copyright (c) 2011 - 2023, Intel Corporation. All rights reserved.<BR>
Copyright (c) Microsoft Corporation.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiMm.h>
#include <Protocol/SmmExitBootServices.h>
#include "SmmPerformanceLibInternal.h"
/**
The constructor function initializes the Performance Measurement Enable flag.
@param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
**/
EFI_STATUS
EFIAPI
SmmPerformanceLibConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
return RegisterExitBootServicesCallback (&gEdkiiSmmExitBootServicesProtocolGuid);
}
/**
The destructor function frees resources allocated by constructor.
@param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The destructor always returns EFI_SUCCESS.
**/
EFI_STATUS
EFIAPI
SmmPerformanceLibDestructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
return UnregisterExitBootServicesCallback (&gEdkiiSmmExitBootServicesProtocolGuid);
}
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