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[NTOSKRNL]

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Add MiScanMemoryDescriptors, that combines the work of MiPagesInLoaderBlock, the loop in MmInitializeMemoryLimits and the loop in MiInitMachineDependent.

svn path=/trunk/; revision=53822
This commit is contained in:
Timo Kreuzer 2011-09-24 00:12:58 +00:00
parent b1df00f897
commit 2c440bd22d
2 changed files with 94 additions and 151 deletions
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100
reactos/ntoskrnl/mm/ARM3/i386/init.c
View file

@ -29,6 +29,8 @@ MMPTE DemandZeroPte = {{MM_READWRITE << MM_PTE_SOFTWARE_PROTECTION_BITS}};
MMPTE PrototypePte = {{(MM_READWRITE << MM_PTE_SOFTWARE_PROTECTION_BITS) |
PTE_PROTOTYPE | (MI_PTE_LOOKUP_NEEDED << PAGE_SHIFT)}};
extern PFN_NUMBER MiNumberOfFreePages;
/* PRIVATE FUNCTIONS **********************************************************/
VOID
@ -152,9 +154,6 @@ NTAPI
INIT_FUNCTION
MiInitMachineDependent(IN PLOADER_PARAMETER_BLOCK LoaderBlock)
{
PLIST_ENTRY NextEntry;
PMEMORY_ALLOCATION_DESCRIPTOR MdBlock;
ULONG FreePages = 0;
PFN_NUMBER PageFrameIndex;
PMMPTE StartPde, EndPde, PointerPte, LastPte;
MMPTE TempPde, TempPte;
@ -190,101 +189,8 @@ MiInitMachineDependent(IN PLOADER_PARAMETER_BLOCK LoaderBlock)
EndPde = MiAddressToPde(KSEG0_BASE);
RtlZeroMemory(StartPde, (EndPde - StartPde) * sizeof(MMPTE));
//
// Loop the memory descriptors
//
NextEntry = LoaderBlock->MemoryDescriptorListHead.Flink;
while (NextEntry != &LoaderBlock->MemoryDescriptorListHead)
{
//
// Get the memory block
//
MdBlock = CONTAINING_RECORD(NextEntry,
MEMORY_ALLOCATION_DESCRIPTOR,
ListEntry);
//
// Skip invisible memory
//
if ((MdBlock->MemoryType != LoaderFirmwarePermanent) &&
(MdBlock->MemoryType != LoaderSpecialMemory) &&
(MdBlock->MemoryType != LoaderHALCachedMemory) &&
(MdBlock->MemoryType != LoaderBBTMemory))
{
//
// Check if BURNMEM was used
//
if (MdBlock->MemoryType != LoaderBad)
{
//
// Count this in the total of pages
//
MmNumberOfPhysicalPages += MdBlock->PageCount;
}
//
// Check if this is the new lowest page
//
if (MdBlock->BasePage < MmLowestPhysicalPage)
{
//
// Update the lowest page
//
MmLowestPhysicalPage = MdBlock->BasePage;
}
//
// Check if this is the new highest page
//
PageFrameIndex = MdBlock->BasePage + MdBlock->PageCount;
if (PageFrameIndex > MmHighestPhysicalPage)
{
//
// Update the highest page
//
MmHighestPhysicalPage = PageFrameIndex - 1;
}
//
// Check if this is free memory
//
if ((MdBlock->MemoryType == LoaderFree) ||
(MdBlock->MemoryType == LoaderLoadedProgram) ||
(MdBlock->MemoryType == LoaderFirmwareTemporary) ||
(MdBlock->MemoryType == LoaderOsloaderStack))
{
//
// Check if this is the largest memory descriptor
//
if (MdBlock->PageCount > FreePages)
{
//
// For now, it is
//
MxFreeDescriptor = MdBlock;
}
//
// More free pages
//
FreePages += MdBlock->PageCount;
}
}
//
// Keep going
//
NextEntry = MdBlock->ListEntry.Flink;
}
//
// Save original values of the free descriptor, since it'll be
// altered by early allocations
//
MxOldFreeDescriptor = *MxFreeDescriptor;
/* Compute non paged pool limits and size */
MiComputeNonPagedPoolVa(FreePages);
MiComputeNonPagedPoolVa(MiNumberOfFreePages);
/* Compute color information (L2 cache-separated paging lists) */
MiComputeColorInformation();

145
reactos/ntoskrnl/mm/ARM3/mminit.c
View file

@ -364,8 +364,94 @@ TRUE;
FALSE;
#endif
/* Number of memory descriptors in the loader block */
ULONG MiNumberDescriptors = 0;
/* Number of free pages in the loader block */
PFN_NUMBER MiNumberOfFreePages = 0;
/* PRIVATE FUNCTIONS **********************************************************/
VOID
NTAPI
MiScanMemoryDescriptors(IN PLOADER_PARAMETER_BLOCK LoaderBlock)
{
PLIST_ENTRY ListEntry;
PMEMORY_ALLOCATION_DESCRIPTOR Descriptor;
PFN_NUMBER PageFrameIndex, FreePages = 0;
/* Loop the memory descriptors */
for (ListEntry = LoaderBlock->MemoryDescriptorListHead.Flink;
ListEntry != &LoaderBlock->MemoryDescriptorListHead;
ListEntry = ListEntry->Flink)
{
/* Get the descriptor */
Descriptor = CONTAINING_RECORD(ListEntry,
MEMORY_ALLOCATION_DESCRIPTOR,
ListEntry);
DPRINT("MD Type: %lx Base: %lx Count: %lx\n",
Descriptor->MemoryType, Descriptor->BasePage, Descriptor->PageCount);
/* Count this descriptor */
MiNumberDescriptors++;
/* Check if this is invisible memory */
if ((Descriptor->MemoryType == LoaderFirmwarePermanent) &&
(Descriptor->MemoryType == LoaderSpecialMemory) &&
(Descriptor->MemoryType == LoaderHALCachedMemory) &&
(Descriptor->MemoryType == LoaderBBTMemory))
{
/* Skip this descriptor */
continue;
}
/* Check if this is bad memory */
if (Descriptor->MemoryType != LoaderBad)
{
/* Count this in the total of pages */
MmNumberOfPhysicalPages += Descriptor->PageCount;
}
/* Check if this is the new lowest page */
if (Descriptor->BasePage < MmLowestPhysicalPage)
{
/* Update the lowest page */
MmLowestPhysicalPage = Descriptor->BasePage;
}
/* Check if this is the new highest page */
PageFrameIndex = Descriptor->BasePage + Descriptor->PageCount;
if (PageFrameIndex > MmHighestPhysicalPage)
{
/* Update the highest page */
MmHighestPhysicalPage = PageFrameIndex - 1;
}
/* Check if this is free memory */
if ((Descriptor->MemoryType == LoaderFree) ||
(Descriptor->MemoryType == LoaderLoadedProgram) ||
(Descriptor->MemoryType == LoaderFirmwareTemporary) ||
(Descriptor->MemoryType == LoaderOsloaderStack))
{
/* Count it too free pages */
MiNumberOfFreePages += Descriptor->PageCount;
/* Check if this is the largest memory descriptor */
if (Descriptor->PageCount > FreePages)
{
/* Remember it */
MxFreeDescriptor = Descriptor;
FreePages = Descriptor->PageCount;
}
}
}
/* Save original values of the free descriptor, since it'll be
* altered by early allocations */
MxOldFreeDescriptor = *MxFreeDescriptor;
}
PFN_NUMBER
NTAPI
INIT_FUNCTION
@ -1375,48 +1461,6 @@ MmDumpArmPfnDatabase(IN BOOLEAN StatusOnly)
KeLowerIrql(OldIrql);
}
PFN_NUMBER
NTAPI
MiPagesInLoaderBlock(IN PLOADER_PARAMETER_BLOCK LoaderBlock,
IN PBOOLEAN IncludeType)
{
PLIST_ENTRY NextEntry;
PFN_NUMBER PageCount = 0;
PMEMORY_ALLOCATION_DESCRIPTOR MdBlock;
//
// Now loop through the descriptors
//
NextEntry = LoaderBlock->MemoryDescriptorListHead.Flink;
while (NextEntry != &LoaderBlock->MemoryDescriptorListHead)
{
//
// Grab each one, and check if it's one we should include
//
MdBlock = CONTAINING_RECORD(NextEntry,
MEMORY_ALLOCATION_DESCRIPTOR,
ListEntry);
if ((MdBlock->MemoryType < LoaderMaximum) &&
(IncludeType[MdBlock->MemoryType]))
{
//
// Add this to our running total
//
PageCount += MdBlock->PageCount;
}
//
// Try the next descriptor
//
NextEntry = MdBlock->ListEntry.Flink;
}
//
// Return the total
//
return PageCount;
}
PPHYSICAL_MEMORY_DESCRIPTOR
NTAPI
INIT_FUNCTION
@ -1424,23 +1468,15 @@ MmInitializeMemoryLimits(IN PLOADER_PARAMETER_BLOCK LoaderBlock,
IN PBOOLEAN IncludeType)
{
PLIST_ENTRY NextEntry;
ULONG Run = 0, InitialRuns = 0;
ULONG Run = 0, InitialRuns;
PFN_NUMBER NextPage = -1, PageCount = 0;
PPHYSICAL_MEMORY_DESCRIPTOR Buffer, NewBuffer;
PMEMORY_ALLOCATION_DESCRIPTOR MdBlock;
//
// Scan the memory descriptors
// Start with the maximum we might need
//
NextEntry = LoaderBlock->MemoryDescriptorListHead.Flink;
while (NextEntry != &LoaderBlock->MemoryDescriptorListHead)
{
//
// For each one, increase the memory allocation estimate
//
InitialRuns++;
NextEntry = NextEntry->Flink;
}
InitialRuns = MiNumberDescriptors;
//
// Allocate the maximum we'll ever need
@ -1970,7 +2006,8 @@ MmArmInitSystem(IN ULONG Phase,
//
// Count physical pages on the system
//
PageCount = MiPagesInLoaderBlock(LoaderBlock, IncludeType);
MiScanMemoryDescriptors(LoaderBlock);
PageCount = MmNumberOfPhysicalPages;
//
// Check if this is a machine with less than 19MB of RAM