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| author | lzeng14 <lzeng14@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-05-29 05:02:43 +0000 |
|---|---|---|
| committer | lzeng14 <lzeng14@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-05-29 05:02:43 +0000 |
| commit | b504f51998e839691e0d8c68f3f3093907575594 (patch) | |
| tree | 355651f32f904de21837b56b426e8245d82ef983 /MdeModulePkg/Library/PeiPerformanceLib | |
| parent | 8b4d274cb1cc6e734fb483730f5667bbda736556 (diff) | |
| download | edk2-b504f51998e839691e0d8c68f3f3093907575594.tar.gz edk2-b504f51998e839691e0d8c68f3f3093907575594.tar.bz2 edk2-b504f51998e839691e0d8c68f3f3093907575594.zip | |
Optimize the log entry search algorithm to save boot performance.
1. Search from the first entry can be changed to Search from the end entry, because most End just follows its Start.
2. Match Start and End entry, the first comparison can be changed from Handle to EndTimeStamp, because only zero EndTimeStamp is required to be matched.
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13367 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg/Library/PeiPerformanceLib')
| -rw-r--r-- | MdeModulePkg/Library/PeiPerformanceLib/PeiPerformanceLib.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/MdeModulePkg/Library/PeiPerformanceLib/PeiPerformanceLib.c b/MdeModulePkg/Library/PeiPerformanceLib/PeiPerformanceLib.c index 7a2d3da0ec..60451eefdf 100644 --- a/MdeModulePkg/Library/PeiPerformanceLib/PeiPerformanceLib.c +++ b/MdeModulePkg/Library/PeiPerformanceLib/PeiPerformanceLib.c @@ -113,6 +113,7 @@ InternalSearchForLogEntry ( )
{
UINT32 Index;
+ UINT32 Index2;
UINT32 NumberOfEntries;
PEI_PERFORMANCE_LOG_ENTRY *LogEntryArray;
@@ -126,13 +127,16 @@ InternalSearchForLogEntry ( NumberOfEntries = PeiPerformanceLog->NumberOfEntries;
LogEntryArray = (PEI_PERFORMANCE_LOG_ENTRY *) (PeiPerformanceLog + 1);
+ Index2 = 0;
+
for (Index = 0; Index < NumberOfEntries; Index++) {
- if ((LogEntryArray[Index].Handle == (EFI_PHYSICAL_ADDRESS) (UINTN) Handle) &&
- AsciiStrnCmp (LogEntryArray[Index].Token, Token, PEI_PERFORMANCE_STRING_LENGTH) == 0 &&
- AsciiStrnCmp (LogEntryArray[Index].Module, Module, PEI_PERFORMANCE_STRING_LENGTH) == 0 &&
- (PeiPerformanceIdArray[Index] == Identifier) &&
- LogEntryArray[Index].EndTimeStamp == 0
- ) {
+ Index2 = NumberOfEntries - 1 - Index;
+ if (LogEntryArray[Index2].EndTimeStamp == 0 &&
+ (LogEntryArray[Index2].Handle == (EFI_PHYSICAL_ADDRESS) (UINTN) Handle) &&
+ AsciiStrnCmp (LogEntryArray[Index2].Token, Token, PEI_PERFORMANCE_STRING_LENGTH) == 0 &&
+ AsciiStrnCmp (LogEntryArray[Index2].Module, Module, PEI_PERFORMANCE_STRING_LENGTH) == 0 &&
+ (PeiPerformanceIdArray[Index2] == Identifier)) {
+ Index = Index2;
break;
}
}
|