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1c51a268b7
Adds a new library instance to support logging performance data in Standalone MM. - Add StandaloneMmPerformanceLib instance - Move common MM logic to a new file `SmmPerformanceLibInternal.c` - Since the library largely defers most logic to the performance measurement protocol a large degree of code can be shared between Standalone MM and Traditional MM. Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/** @file
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Performance Library used in SMM phase.
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This library instance provides infrastructure for SMM drivers to log performance
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data. It consumes SMM PerformanceEx or Performance Protocol published by SmmCorePerformanceLib
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to log performance data. If both SMM PerformanceEx and Performance Protocol are not available, it does not log any
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performance information.
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Copyright (c) 2011 - 2023, Intel Corporation. All rights reserved.<BR>
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Copyright (c) Microsoft Corporation.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <PiMm.h>
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#include <Protocol/SmmExitBootServices.h>
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#include "SmmPerformanceLibInternal.h"
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/**
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The constructor function initializes the Performance Measurement Enable flag.
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@param[in] ImageHandle The firmware allocated handle for the EFI image.
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@param[in] SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
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**/
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EFI_STATUS
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EFIAPI
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SmmPerformanceLibConstructor (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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return RegisterExitBootServicesCallback (&gEdkiiSmmExitBootServicesProtocolGuid);
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}
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/**
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The destructor function frees resources allocated by constructor.
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@param[in] ImageHandle The firmware allocated handle for the EFI image.
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@param[in] SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The destructor always returns EFI_SUCCESS.
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**/
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EFI_STATUS
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EFIAPI
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SmmPerformanceLibDestructor (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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return UnregisterExitBootServicesCallback (&gEdkiiSmmExitBootServicesProtocolGuid);
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}
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