From: Eric Dong <eric.dong@intel.com>
To: edk2-devel@lists.01.org
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Subject: [Patch v4 2/2] UefiCpuPkg/RegisterCpuFeaturesLib: Avoid AP calls PeiService.
Date: Tue, 8 Jan 2019 13:25:19 +0800 [thread overview]
Message-ID: <20190108052519.22976-3-eric.dong@intel.com> (raw)
In-Reply-To: <20190108052519.22976-1-eric.dong@intel.com>
V3:
1. Define union to specify the ppi or protocol.
V2:
1. Initialize CpuFeaturesData->MpService in CpuInitDataInitialize
and make this function been called at the begin of the
initialization.
2. let all other functions use CpuFeaturesData->MpService install
of locate the protocol itself.
V1:
GetProcessorIndex function calls GetMpPpi to get the MP Ppi.
Ap will calls GetProcessorIndex function which final let AP calls
PeiService.
This patch avoid GetProcessorIndex call PeiService.
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1411
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
---
.../RegisterCpuFeaturesLib/CpuFeaturesInitialize.c | 22 ++++---
.../DxeRegisterCpuFeaturesLib.c | 59 ++++++++++--------
.../PeiRegisterCpuFeaturesLib.c | 70 +++++++++-------------
.../RegisterCpuFeaturesLib/RegisterCpuFeatures.h | 25 +++++++-
4 files changed, 99 insertions(+), 77 deletions(-)
diff --git a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/CpuFeaturesInitialize.c b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/CpuFeaturesInitialize.c
index 624ddee055..5866e022f0 100644
--- a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/CpuFeaturesInitialize.c
+++ b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/CpuFeaturesInitialize.c
@@ -138,7 +138,7 @@ FillProcessorInfo (
**/
VOID
CpuInitDataInitialize (
- IN UINTN NumberOfCpus
+ VOID
)
{
EFI_STATUS Status;
@@ -157,12 +157,22 @@ CpuInitDataInitialize (
ACPI_CPU_DATA *AcpiCpuData;
CPU_STATUS_INFORMATION *CpuStatus;
UINT32 *ValidCoreCountPerPackage;
+ UINTN NumberOfCpus;
+ UINTN NumberOfEnabledProcessors;
Core = 0;
Package = 0;
Thread = 0;
CpuFeaturesData = GetCpuFeaturesData ();
+
+ //
+ // Initialize CpuFeaturesData->MpService as early as possile, so later function can use it.
+ //
+ CpuFeaturesData->MpService = GetMpService ();
+
+ GetNumberOfProcessor (&NumberOfCpus, &NumberOfEnabledProcessors);
+
CpuFeaturesData->InitOrder = AllocateZeroPool (sizeof (CPU_FEATURES_INIT_ORDER) * NumberOfCpus);
ASSERT (CpuFeaturesData->InitOrder != NULL);
@@ -409,7 +419,7 @@ CollectProcessorData (
CPU_FEATURES_DATA *CpuFeaturesData;
CpuFeaturesData = (CPU_FEATURES_DATA *)Buffer;
- ProcessorNumber = GetProcessorIndex ();
+ ProcessorNumber = GetProcessorIndex (CpuFeaturesData);
CpuInfo = &CpuFeaturesData->InitOrder[ProcessorNumber].CpuInfo;
//
// collect processor information
@@ -1105,15 +1115,11 @@ CpuFeaturesDetect (
VOID
)
{
- UINTN NumberOfCpus;
- UINTN NumberOfEnabledProcessors;
CPU_FEATURES_DATA *CpuFeaturesData;
CpuFeaturesData = GetCpuFeaturesData();
- GetNumberOfProcessor (&NumberOfCpus, &NumberOfEnabledProcessors);
-
- CpuInitDataInitialize (NumberOfCpus);
+ CpuInitDataInitialize ();
//
// Wakeup all APs for data collection.
@@ -1125,6 +1131,6 @@ CpuFeaturesDetect (
//
CollectProcessorData (CpuFeaturesData);
- AnalysisProcessorFeatures (NumberOfCpus);
+ AnalysisProcessorFeatures (CpuFeaturesData->NumberOfCpus);
}
diff --git a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/DxeRegisterCpuFeaturesLib.c b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/DxeRegisterCpuFeaturesLib.c
index 926698dc95..3654c105ef 100644
--- a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/DxeRegisterCpuFeaturesLib.c
+++ b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/DxeRegisterCpuFeaturesLib.c
@@ -20,7 +20,6 @@
#include "RegisterCpuFeatures.h"
CPU_FEATURES_DATA mCpuFeaturesData = {0};
-EFI_MP_SERVICES_PROTOCOL *mCpuFeaturesMpServices = NULL;
/**
Worker function to get CPU_FEATURES_DATA pointer.
@@ -38,46 +37,46 @@ GetCpuFeaturesData (
/**
Worker function to get EFI_MP_SERVICES_PROTOCOL pointer.
- @return Pointer to EFI_MP_SERVICES_PROTOCOL.
+ @return MP_SERVICES variable.
**/
-EFI_MP_SERVICES_PROTOCOL *
-GetMpProtocol (
+MP_SERVICES
+GetMpService (
VOID
)
{
- EFI_STATUS Status;
-
- if (mCpuFeaturesMpServices == NULL) {
- //
- // Get MP Services Protocol
- //
- Status = gBS->LocateProtocol (
- &gEfiMpServiceProtocolGuid,
- NULL,
- (VOID **)&mCpuFeaturesMpServices
- );
- ASSERT_EFI_ERROR (Status);
- }
+ EFI_STATUS Status;
+ MP_SERVICES MpService;
- ASSERT (mCpuFeaturesMpServices != NULL);
- return mCpuFeaturesMpServices;
+ //
+ // Get MP Services Protocol
+ //
+ Status = gBS->LocateProtocol (
+ &gEfiMpServiceProtocolGuid,
+ NULL,
+ (VOID **)&MpService.Protocol
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ return MpService;
}
/**
Worker function to return processor index.
+ @param CpuFeaturesData Cpu Feature Data structure.
+
@return The processor index.
**/
UINTN
GetProcessorIndex (
- VOID
+ IN CPU_FEATURES_DATA *CpuFeaturesData
)
{
EFI_STATUS Status;
UINTN ProcessorIndex;
EFI_MP_SERVICES_PROTOCOL *MpServices;
- MpServices = GetMpProtocol ();
+ MpServices = CpuFeaturesData->MpService.Protocol;
Status = MpServices->WhoAmI(MpServices, &ProcessorIndex);
ASSERT_EFI_ERROR (Status);
return ProcessorIndex;
@@ -101,8 +100,11 @@ GetProcessorInformation (
{
EFI_STATUS Status;
EFI_MP_SERVICES_PROTOCOL *MpServices;
+ CPU_FEATURES_DATA *CpuFeaturesData;
+
+ CpuFeaturesData = GetCpuFeaturesData ();
+ MpServices = CpuFeaturesData->MpService.Protocol;
- MpServices = GetMpProtocol ();
Status = MpServices->GetProcessorInfo (
MpServices,
ProcessorNumber,
@@ -130,8 +132,8 @@ StartupAPsWorker (
CPU_FEATURES_DATA *CpuFeaturesData;
CpuFeaturesData = GetCpuFeaturesData ();
+ MpServices = CpuFeaturesData->MpService.Protocol;
- MpServices = GetMpProtocol ();
//
// Wakeup all APs
//
@@ -159,8 +161,11 @@ SwitchNewBsp (
{
EFI_STATUS Status;
EFI_MP_SERVICES_PROTOCOL *MpServices;
+ CPU_FEATURES_DATA *CpuFeaturesData;
+
+ CpuFeaturesData = GetCpuFeaturesData ();
+ MpServices = CpuFeaturesData->MpService.Protocol;
- MpServices = GetMpProtocol ();
//
// Wakeup all APs
//
@@ -190,8 +195,10 @@ GetNumberOfProcessor (
{
EFI_STATUS Status;
EFI_MP_SERVICES_PROTOCOL *MpServices;
+ CPU_FEATURES_DATA *CpuFeaturesData;
- MpServices = GetMpProtocol ();
+ CpuFeaturesData = GetCpuFeaturesData ();
+ MpServices = CpuFeaturesData->MpService.Protocol;
//
// Get the number of CPUs
@@ -225,7 +232,7 @@ CpuFeaturesInitialize (
CpuFeaturesData = GetCpuFeaturesData ();
- OldBspNumber = GetProcessorIndex();
+ OldBspNumber = GetProcessorIndex (CpuFeaturesData);
CpuFeaturesData->BspNumber = OldBspNumber;
Status = gBS->CreateEvent (
diff --git a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/PeiRegisterCpuFeaturesLib.c b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/PeiRegisterCpuFeaturesLib.c
index 0bb3dee8b6..5ed76afa24 100644
--- a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/PeiRegisterCpuFeaturesLib.c
+++ b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/PeiRegisterCpuFeaturesLib.c
@@ -70,15 +70,15 @@ GetCpuFeaturesData (
/**
Worker function to get MP PPI service pointer.
- @return PEI PPI service pointer.
+ @return MP_SERVICES variable.
**/
-EFI_PEI_MP_SERVICES_PPI *
-GetMpPpi (
+MP_SERVICES
+GetMpService (
VOID
)
{
EFI_STATUS Status;
- EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;
+ MP_SERVICES MpService;
//
// Get MP Services Protocol
@@ -87,29 +87,36 @@ GetMpPpi (
&gEfiPeiMpServicesPpiGuid,
0,
NULL,
- (VOID **)&CpuMpPpi
+ (VOID **)&MpService.Ppi
);
ASSERT_EFI_ERROR (Status);
- return CpuMpPpi;
+ return MpService;
}
/**
Worker function to return processor index.
+ @param CpuFeaturesData Cpu Feature Data structure.
+
@return The processor index.
**/
UINTN
GetProcessorIndex (
- VOID
+ IN CPU_FEATURES_DATA *CpuFeaturesData
)
{
EFI_STATUS Status;
EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;
UINTN ProcessorIndex;
- CpuMpPpi = GetMpPpi ();
+ CpuMpPpi = CpuFeaturesData->MpService.Ppi;
- Status = CpuMpPpi->WhoAmI(GetPeiServicesTablePointer (), CpuMpPpi, &ProcessorIndex);
+ //
+ // For two reasons which use NULL for WhoAmI:
+ // 1. This function will be called by APs and AP should not use PeiServices Table
+ // 2. Check WhoAmI implementation, this parameter will not be used.
+ //
+ Status = CpuMpPpi->WhoAmI(NULL, CpuMpPpi, &ProcessorIndex);
ASSERT_EFI_ERROR (Status);
return ProcessorIndex;
}
@@ -132,8 +139,11 @@ GetProcessorInformation (
{
EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;
EFI_STATUS Status;
+ CPU_FEATURES_DATA *CpuFeaturesData;
+
+ CpuFeaturesData = GetCpuFeaturesData ();
+ CpuMpPpi = CpuFeaturesData->MpService.Ppi;
- CpuMpPpi = GetMpPpi ();
Status = CpuMpPpi->GetProcessorInfo (
GetPeiServicesTablePointer(),
CpuMpPpi,
@@ -162,17 +172,7 @@ StartupAPsWorker (
CPU_FEATURES_DATA *CpuFeaturesData;
CpuFeaturesData = GetCpuFeaturesData ();
-
- //
- // Get MP Services Protocol
- //
- Status = PeiServicesLocatePpi (
- &gEfiPeiMpServicesPpiGuid,
- 0,
- NULL,
- (VOID **)&CpuMpPpi
- );
- ASSERT_EFI_ERROR (Status);
+ CpuMpPpi = CpuFeaturesData->MpService.Ppi;
//
// Wakeup all APs for data collection.
@@ -244,17 +244,10 @@ SwitchNewBsp (
{
EFI_STATUS Status;
EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;
+ CPU_FEATURES_DATA *CpuFeaturesData;
- //
- // Get MP Services Protocol
- //
- Status = PeiServicesLocatePpi (
- &gEfiPeiMpServicesPpiGuid,
- 0,
- NULL,
- (VOID **)&CpuMpPpi
- );
- ASSERT_EFI_ERROR (Status);
+ CpuFeaturesData = GetCpuFeaturesData ();
+ CpuMpPpi = CpuFeaturesData->MpService.Ppi;
//
// Wakeup all APs for data collection.
@@ -286,17 +279,10 @@ GetNumberOfProcessor (
{
EFI_STATUS Status;
EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;
+ CPU_FEATURES_DATA *CpuFeaturesData;
- //
- // Get MP Services Protocol
- //
- Status = PeiServicesLocatePpi (
- &gEfiPeiMpServicesPpiGuid,
- 0,
- NULL,
- (VOID **)&CpuMpPpi
- );
- ASSERT_EFI_ERROR (Status);
+ CpuFeaturesData = GetCpuFeaturesData ();
+ CpuMpPpi = CpuFeaturesData->MpService.Ppi;
//
// Get the number of CPUs
@@ -329,7 +315,7 @@ CpuFeaturesInitialize (
CpuFeaturesData = GetCpuFeaturesData ();
- OldBspNumber = GetProcessorIndex();
+ OldBspNumber = GetProcessorIndex (CpuFeaturesData);
CpuFeaturesData->BspNumber = OldBspNumber;
//
diff --git a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeatures.h b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeatures.h
index cf3da84837..21dd5773a6 100644
--- a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeatures.h
+++ b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeatures.h
@@ -14,6 +14,10 @@
#ifndef _REGISTER_CPU_FEATURES_H_
#define _REGISTER_CPU_FEATURES_H_
+#include <PiPei.h>
+#include <PiDxe.h>
+#include <Ppi/MpServices.h>
+#include <Protocol/MpService.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
@@ -66,6 +70,11 @@ typedef struct {
volatile UINT32 *PackageSemaphoreCount; // Semaphore containers used to program Package semaphore.
} PROGRAM_CPU_REGISTER_FLAGS;
+typedef union {
+ EFI_MP_SERVICES_PROTOCOL *Protocol;
+ EFI_PEI_MP_SERVICES_PPI *Ppi;
+} MP_SERVICES;
+
typedef struct {
UINTN FeaturesCount;
UINT32 BitMaskSize;
@@ -85,6 +94,8 @@ typedef struct {
UINTN BspNumber;
PROGRAM_CPU_REGISTER_FLAGS CpuFlags;
+
+ MP_SERVICES MpService;
} CPU_FEATURES_DATA;
#define CPU_FEATURE_ENTRY_FROM_LINK(a) \
@@ -108,11 +119,13 @@ GetCpuFeaturesData (
/**
Worker function to return processor index.
+ @param CpuFeaturesData Cpu Feature Data structure.
+
@return The processor index.
**/
UINTN
GetProcessorIndex (
- VOID
+ IN CPU_FEATURES_DATA *CpuFeaturesData
);
/**
@@ -245,4 +258,14 @@ GetAcpiCpuData (
VOID
);
+/**
+ Worker function to get MP service pointer.
+
+ @return MP_SERVICES variable.
+**/
+MP_SERVICES
+GetMpService (
+ VOID
+ );
+
#endif
--
2.15.0.windows.1
next prev parent reply other threads:[~2019-01-08 5:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-08 5:25 [Patch v4 0/2] Avoid AP calls PeiServices table Eric Dong
2019-01-08 5:25 ` [Patch v4 1/2] UefiCpuPkg/RegisterCpuFeaturesLib: Enhance debug message Eric Dong
2019-01-08 5:25 ` Eric Dong [this message]
2019-01-08 7:58 ` [Patch v4 0/2] Avoid AP calls PeiServices table Ni, Ruiyu
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