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Maurice Ma
112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
/** @file
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Shell command `perf` to display system performance data.
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Library/ShellLib.h>
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#include <Library/DebugLib.h>
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#include <Guid/PerformanceInfoGuid.h>
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#include <Library/HobLib.h>
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/**
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Display performance data.
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@param[in] Shell shell instance
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@param[in] Argc number of command line arguments
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@param[in] Argv command line arguments
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@retval EFI_SUCCESS
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**/
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STATIC
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EFI_STATUS
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EFIAPI
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ShellCommandPerfFunc (
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IN SHELL *Shell,
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IN UINTN Argc,
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IN CHAR16 *Argv[]
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);
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CONST SHELL_COMMAND ShellCommandPerf = {
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L"perf",
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L"Display performance data",
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&ShellCommandPerfFunc
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};
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/**
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Print loader PERFORMANCE_INFO data.
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@param[in] PerfData pointer to performance data
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**/
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STATIC
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VOID
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EFIAPI
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PrintPerformanceInfo (
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IN PERFORMANCE_INFO *PerfData
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)
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{
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UINT32 Idx, Time, PrevTime;
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UINT16 Id;
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UINT64 Tsc;
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PrevTime = 0;
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ShellPrint (L" Id | Time (ms) | Delta (ms) \n");
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ShellPrint (L"------+------------+------------\n");
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for (Idx = 0; Idx < PerfData->Count; Idx++) {
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Tsc = PerfData->TimeStamp[Idx] & 0x0000FFFFFFFFFFFFULL;
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Id = (PerfData->TimeStamp[Idx] >> 48) & 0xFFFF;
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Time = (UINT32)DivU64x32 (Tsc, PerfData->Frequency);
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ShellPrint (L" %4x | %7d ms | %7d ms\n", Id, Time, Time - PrevTime);
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PrevTime = Time;
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}
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ShellPrint (L"------+------------+------------\n");
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}
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/**
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Display performance data.
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@param[in] Shell shell instance
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@param[in] Argc number of command line arguments
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@param[in] Argv command line arguments
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@retval EFI_SUCCESS
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**/
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STATIC
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EFI_STATUS
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EFIAPI
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ShellCommandPerfFunc (
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IN SHELL *Shell,
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IN UINTN Argc,
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IN CHAR16 *Argv[]
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)
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{
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VOID *GuidHob;
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PERFORMANCE_INFO *PerfData;
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GuidHob = GetNextGuidHob (&gLoaderPerformanceInfoGuid, GetHobList());
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if (GuidHob == NULL) {
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ASSERT (FALSE);
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return RETURN_NOT_FOUND;
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}
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PerfData = (PERFORMANCE_INFO *)GET_GUID_HOB_DATA (GuidHob);
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ShellPrint (L"Loader Performance Info\n");
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ShellPrint (L"=======================\n\n");
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PrintPerformanceInfo (PerfData);
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return EFI_SUCCESS;
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}
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