On 2015/11/2 17:11, Cinnamon Shia wrote:
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.
Signed-off-by: Cinnamon Shia <[email protected]>
---
ShellPkg/Library/UefiDpLib/Dp.c | 27 ++++++++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
Reviewed-by: Star Zeng <[email protected]>
diff --git a/ShellPkg/Library/UefiDpLib/Dp.c b/ShellPkg/Library/UefiDpLib/Dp.c
index 8270172..62a4e7b 100644
--- a/ShellPkg/Library/UefiDpLib/Dp.c
+++ b/ShellPkg/Library/UefiDpLib/Dp.c
@@ -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.
@@ -219,6 +239,11 @@ ShellCommandRunDp (
}
//
+ // Initialize the pre-defined cumulative data.
+ //
+ InitCumulativeData ();
+
+ //
// Timer specific processing
//
// Get the Performance counter characteristics:
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