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ShellPkg/UefiDpLib: Fix a DP cumulative data issue 

The value of PERF_CUM_DATA.Count and PERF_CUM_DATA.Duration field
keep cumulating on every execution of dp.
Initialize the CumData at dp's entry point.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Cinnamon Shia <cinnamon.shia@hpe.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18727 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Cinnamon Shia 2015-11-05 01:03:14 +00:00 committed by lzeng14
parent c2e5e70a85
commit 303ec9bc9f
1 changed files with 26 additions and 1 deletions
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27
ShellPkg/Library/UefiDpLib/Dp.c
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@ -14,6 +14,7 @@
timer information to calculate elapsed time for each measurement.
Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.
(C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -110,7 +111,26 @@ DumpStatistics( void )
SHELL_FREE_NON_NULL (StringPtrUnknown);
}
/**
/**
Initialize the cumulative data.
**/
VOID
InitCumulativeData (
VOID
)
{
UINTN Index;
for (Index = 0; Index < NumCum; ++Index) {
CumData[Index].Count = 0;
CumData[Index].MinDur = PERF_MAXDUR;
CumData[Index].MaxDur = 0;
CumData[Index].Duration = 0;
}
}
/**
Dump performance data.
@param[in] ImageHandle The image handle.
@ -218,6 +238,11 @@ ShellCommandRunDp (
#endif // PROFILING_IMPLEMENTED
}
//
// Initialize the pre-defined cumulative data.
//
InitCumulativeData ();
//
// Timer specific processing
//