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[NTOSKRNL] For SystemPerformanceInformation, return some info extracted from PRCB

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This notably includes the amount of context switchs and system calls.
This commit is contained in:
Pierre Schweitzer
2018-12-09 18:56:50 +01:00
parent 4d974e56ee
commit e632375851
1 changed files with 19 additions and 4 deletions
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23
ntoskrnl/ex/sysinfo.c
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@@ -669,7 +669,9 @@ QSI_DEF(SystemProcessorInformation)
/* Class 2 - Performance Information */
QSI_DEF(SystemPerformanceInformation)
{
LONG i;
ULONG IdleUser, IdleKernel;
PKPRCB Prcb;
PSYSTEM_PERFORMANCE_INFORMATION Spi
= (PSYSTEM_PERFORMANCE_INFORMATION) Buffer;
@@ -786,10 +788,23 @@ QSI_DEF(SystemPerformanceInformation)
Spi->CcLazyWritePages = CcLazyWritePages;
Spi->CcDataFlushes = CcDataFlushes;
Spi->CcDataPages = CcDataPages;
Spi->ContextSwitches = 0; /* FIXME */
Spi->FirstLevelTbFills = 0; /* FIXME */
Spi->SecondLevelTbFills = 0; /* FIXME */
Spi->SystemCalls = 0; /* FIXME */
Spi->ContextSwitches = 0;
Spi->FirstLevelTbFills = 0;
Spi->SecondLevelTbFills = 0;
Spi->SystemCalls = 0;
for (i = 0; i < KeNumberProcessors; i ++)
{
Prcb = KiProcessorBlock[i];
if (Prcb)
{
Spi->ContextSwitches += KeGetContextSwitches(Prcb);
Spi->FirstLevelTbFills += Prcb->KeFirstLevelTbFills;
Spi->SecondLevelTbFills += Prcb->KeSecondLevelTbFills;
Spi->SystemCalls += Prcb->KeSystemCalls;
}
}
return STATUS_SUCCESS;
}