mirror of https://github.com/acidanthera/audk.git
100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/** @file
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SMM MP perf-logging implementation
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Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "PiSmmCpuDxeSmm.h"
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#define SMM_MP_PERF_PROCEDURE_NAME(procedure) # procedure
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GLOBAL_REMOVE_IF_UNREFERENCED
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CHAR8 *gSmmMpPerfProcedureName[] = {
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SMM_MP_PERF_PROCEDURE_LIST (SMM_MP_PERF_PROCEDURE_NAME)
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};
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//
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// Each element holds the performance data for one processor.
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//
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GLOBAL_REMOVE_IF_UNREFERENCED
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SMM_PERF_AP_PROCEDURE_PERFORMANCE *mSmmMpProcedurePerformance = NULL;
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/**
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Initialize the perf-logging feature for APs.
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@param NumberofCpus Number of processors in the platform.
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**/
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VOID
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InitializeMpPerf (
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UINTN NumberofCpus
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)
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{
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mSmmMpProcedurePerformance = AllocateZeroPool (NumberofCpus * sizeof (*mSmmMpProcedurePerformance));
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ASSERT (mSmmMpProcedurePerformance != NULL);
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}
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/**
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Migrate MP performance data to standardized performance database.
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@param NumberofCpus Number of processors in the platform.
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@param BspIndex The index of the BSP.
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**/
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VOID
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MigrateMpPerf (
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UINTN NumberofCpus,
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UINTN BspIndex
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)
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{
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UINTN CpuIndex;
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UINTN MpProcecureId;
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for (CpuIndex = 0; CpuIndex < NumberofCpus; CpuIndex++) {
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if ((CpuIndex != BspIndex) && !FeaturePcdGet (PcdSmmApPerfLogEnable)) {
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//
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// Skip migrating AP performance data if AP perf-logging is disabled.
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//
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continue;
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}
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for (MpProcecureId = 0; MpProcecureId < SMM_MP_PERF_PROCEDURE_ID (SmmMpProcedureMax); MpProcecureId++) {
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if (mSmmMpProcedurePerformance[CpuIndex].Begin[MpProcecureId] != 0) {
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PERF_START (NULL, gSmmMpPerfProcedureName[MpProcecureId], NULL, mSmmMpProcedurePerformance[CpuIndex].Begin[MpProcecureId]);
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PERF_END (NULL, gSmmMpPerfProcedureName[MpProcecureId], NULL, mSmmMpProcedurePerformance[CpuIndex].End[MpProcecureId]);
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}
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}
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}
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ZeroMem (mSmmMpProcedurePerformance, NumberofCpus * sizeof (*mSmmMpProcedurePerformance));
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}
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/**
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Save the performance counter value before running the MP procedure.
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@param CpuIndex The index of the CPU.
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@param MpProcedureId The ID of the MP procedure.
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**/
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VOID
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MpPerfBegin (
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IN UINTN CpuIndex,
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IN UINTN MpProcedureId
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)
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{
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mSmmMpProcedurePerformance[CpuIndex].Begin[MpProcedureId] = GetPerformanceCounter ();
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}
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/**
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Save the performance counter value after running the MP procedure.
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@param CpuIndex The index of the CPU.
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@param MpProcedureId The ID of the MP procedure.
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**/
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VOID
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MpPerfEnd (
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IN UINTN CpuIndex,
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IN UINTN MpProcedureId
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)
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{
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mSmmMpProcedurePerformance[CpuIndex].End[MpProcedureId] = GetPerformanceCounter ();
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}
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