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First try to get log time at TPL level <= TPL_CALLBACK, then fill time into DataHub. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11102 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
lgao4 2010-11-29 04:41:58 +00:00
parent d99e698158
commit b4c9005886
1 changed files with 12 additions and 3 deletions
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15
IntelFrameworkModulePkg/Universal/DataHubDxe/DataHub.c
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@ -58,6 +58,7 @@ DataHubLogData (
DATA_HUB_FILTER_DRIVER *FilterEntry;
LIST_ENTRY *Link;
LIST_ENTRY *Head;
EFI_TIME LogTime;
Private = DATA_HUB_INSTANCE_FROM_THIS (This);
@ -69,10 +70,18 @@ DataHubLogData (
//
RecordSize = sizeof (EFI_DATA_RECORD_HEADER) + RawDataSize;
TotalSize = sizeof (EFI_DATA_ENTRY) + RecordSize;
//
// First try to get log time at TPL level <= TPL_CALLBACK.
//
ZeroMem (&LogTime, sizeof (LogTime));
if (EfiGetCurrentTpl() <= TPL_CALLBACK) {
gRT->GetTime (&LogTime, NULL);
}
//
// The Logging action is the critical section, so it is locked.
// The MTC asignment & update, time, and logging must be an
// The MTC asignment & update and logging must be an
// atomic operation, so use the lock.
//
Status = EfiAcquireLockOrFail (&Private->DataLock);
@ -110,7 +119,7 @@ DataHubLogData (
//
Record->LogMonotonicCount = ++Private->GlobalMonotonicCount;
gRT->GetTime (&Record->LogTime, NULL);
CopyMem (&Record->LogTime, &LogTime, sizeof (LogTime));
//
// Insert log into the internal linked list.
@ -551,7 +560,7 @@ DataHubInstall (
InitializeListHead (&mPrivateData.DataListHead);
InitializeListHead (&mPrivateData.FilterDriverListHead);
EfiInitializeLock (&mPrivateData.DataLock, TPL_CALLBACK);
EfiInitializeLock (&mPrivateData.DataLock, TPL_NOTIFY);
//
// Make sure we get a bigger MTC number on every boot!