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UefiCpuPkg/MpService: avoid dead lock caused by CheckAllAPsStatus 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16369 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Chen Fan 2014-11-13 18:29:54 +00:00 committed by jljusten
parent 0e724fc198
commit cd8c700b03
1 changed files with 31 additions and 24 deletions
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55
UefiCpuPkg/CpuDxe/CpuMp.c
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@ -632,6 +632,11 @@ StartupAllAPs (
return EFI_INVALID_PARAMETER;
}
//
// temporarily stop checkAllAPsStatus for avoid resource dead-lock.
//
mStopCheckAllAPsStatus = TRUE;
for (Number = 0; Number < mMpSystemData.NumberOfProcessors; Number++) {
CpuData = &mMpSystemData.CpuDatas[Number];
if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {
@ -653,11 +658,6 @@ StartupAllAPs (
}
}
//
// temporarily stop checkAllAPsStatus for initialize parameters.
//
mStopCheckAllAPsStatus = TRUE;
mMpSystemData.Procedure = Procedure;
mMpSystemData.ProcedureArgument = ProcedureArgument;
mMpSystemData.WaitEvent = WaitEvent;
@ -716,6 +716,11 @@ StartupAllAPs (
return EFI_SUCCESS;
}
//
// Blocking temporarily stop CheckAllAPsStatus()
//
mStopCheckAllAPsStatus = TRUE;
while (TRUE) {
CheckAndUpdateAllAPsToIdleState ();
if (mMpSystemData.FinishCount == mMpSystemData.StartCount) {
@ -859,6 +864,11 @@ StartupThisAP (
return EFI_NOT_FOUND;
}
//
// temporarily stop checkAllAPsStatus for avoid resource dead-lock.
//
mStopCheckAllAPsStatus = TRUE;
CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];
if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT) ||
!TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {
@ -869,11 +879,6 @@ StartupThisAP (
return EFI_NOT_READY;
}
//
// temporarily stop checkAllAPsStatus for initialize parameters.
//
mStopCheckAllAPsStatus = TRUE;
SetApState (CpuData, CpuStateReady);
SetApProcedure (CpuData, Procedure, ProcedureArgument);
@ -1013,6 +1018,10 @@ EnableDisableAP (
)
{
CPU_DATA_BLOCK *CpuData;
BOOLEAN TempStopCheckState;
CpuData = NULL;
TempStopCheckState = FALSE;
if (!IsBSP ()) {
return EFI_DEVICE_ERROR;
@ -1022,6 +1031,14 @@ EnableDisableAP (
return EFI_NOT_FOUND;
}
//
// temporarily stop checkAllAPsStatus for initialize parameters.
//
if (!mStopCheckAllAPsStatus) {
mStopCheckAllAPsStatus = TRUE;
TempStopCheckState = TRUE;
}
CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];
if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {
return EFI_INVALID_PARAMETER;
@ -1048,6 +1065,10 @@ EnableDisableAP (
CpuStatusFlagOr (CpuData, (*HealthFlag & PROCESSOR_HEALTH_STATUS_BIT));
}
if (TempStopCheckState) {
mStopCheckAllAPsStatus = FALSE;
}
return EFI_SUCCESS;
}
@ -1303,20 +1324,6 @@ CheckAllAPsStatus (
//
for (Number = 0; Number < mMpSystemData.NumberOfProcessors; Number++) {
CpuData = &mMpSystemData.CpuDatas[Number];
if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {
//
// Skip BSP
//
continue;
}
if (!TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {
//
// Skip Disabled processors
//
continue;
}
if (CpuData->WaitEvent) {
CheckThisAPStatus (NULL, (VOID *)CpuData);
}