Assume Tick value 1 as the beginning time of boot.

This is part of the fix of #202075 to make sure the usage model below doesn’t break:
PERF_START (0, “Token1”, “Module1”, 1);
PERF_END (0, “Token1”, Module1”, 0);


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9943 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 12 insertions, 0 deletions

diff --git a/IntelFrameworkModulePkg/Library/GenericBdsLib/Performance.c b/IntelFrameworkModulePkg/Library/GenericBdsLib/Performance.c
index 6bb60c1500..8f152a8e26 100644
--- a/IntelFrameworkModulePkg/Library/GenericBdsLib/Performance.c
+++ b/IntelFrameworkModulePkg/Library/GenericBdsLib/Performance.c
@@ -263,6 +263,12 @@ WriteBootToOsPerformanceData (
       }

       EntryIndex++;

       if ((Handle == Handles[Index]) && (EndTicker != 0)) {

+        if (StartTicker == 1) {

+          StartTicker = StartValue;

+        }

+        if (EndTicker == 1) {

+          EndTicker = StartValue;

+        }

         Ticker += CountUp ? (EndTicker - StartTicker) : (StartTicker - EndTicker);

       }

     }

@@ -303,6 +309,12 @@ WriteBootToOsPerformanceData (
       ZeroMem (&mPerfData, sizeof (PERF_DATA));

 

       AsciiStrnCpy (mPerfData.Token, Token, PERF_TOKEN_LENGTH);

+      if (StartTicker == 1) {

+        StartTicker = StartValue;

+      }

+      if (EndTicker == 1) {

+        EndTicker = StartValue;

+      }

       Ticker = CountUp ? (EndTicker - StartTicker) : (StartTicker - EndTicker);

 

       mPerfData.Duration = (UINT32) DivU64x32 (Ticker, (UINT32) Freq);