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[NTOS]: Compute the size of, and allocate, the Pool Tracker Table and the Big Page Tracker Table, which are the core data structures that make pool tagging functionality work.

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svn path=/trunk/; revision=55858
This commit is contained in:
Sir Richard 2012-02-25 18:51:21 +00:00
parent bde6f12e52
commit a62fbc4a47
2 changed files with 200 additions and 2 deletions
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181
reactos/ntoskrnl/mm/ARM3/expool.c
View file

@ -24,8 +24,11 @@ ULONG ExpNumberOfPagedPools;
POOL_DESCRIPTOR NonPagedPoolDescriptor;
PPOOL_DESCRIPTOR ExpPagedPoolDescriptor[16 + 1];
PPOOL_DESCRIPTOR PoolVector[2];
PVOID PoolTrackTable;
PKGUARDED_MUTEX ExpPagedPoolMutex;
SIZE_T PoolTrackTableSize, PoolTrackTableMask;
SIZE_T PoolBigPageTableSize, PoolBigPageTableHash;
PPOOL_TRACKER_TABLE PoolTrackTable, PoolBigPageTable;
KSPIN_LOCK ExpTaggedPoolLock;
/* Pool block/header/list access macros */
#define POOL_ENTRY(x) (PPOOL_HEADER)((ULONG_PTR)(x) - sizeof(POOL_HEADER))
@ -329,6 +332,11 @@ ExInitializePoolDescriptor(IN PPOOL_DESCRIPTOR PoolDescriptor,
ExpInitializePoolListHead(NextEntry);
NextEntry++;
}
//
// Note that ReactOS does not support Session Pool Yet
//
ASSERT(PoolType != PagedPoolSession);
}
VOID
@ -338,12 +346,178 @@ InitializePool(IN POOL_TYPE PoolType,
IN ULONG Threshold)
{
PPOOL_DESCRIPTOR Descriptor;
SIZE_T TableSize;
ULONG i;
//
// Check what kind of pool this is
//
if (PoolType == NonPagedPool)
{
//
// Compute the track table size and convert it from a power of two to an
// actual byte size
//
// NOTE: On checked builds, we'll assert if the registry table size was
// invalid, while on retail builds we'll just break out of the loop at
// that point.
//
TableSize = min(PoolTrackTableSize, MmSizeOfNonPagedPoolInBytes >> 8);
for (i = 0; i < 32; i++)
{
if (TableSize & 1)
{
ASSERT((TableSize & ~1) == 0);
if (!(TableSize & ~1)) break;
}
TableSize >>= 1;
}
//
// If we hit bit 32, than no size was defined in the registry, so
// we'll use the default size of 2048 entries.
//
// Otherwise, use the size from the registry, as long as it's not
// smaller than 64 entries.
//
if (i == 32)
{
PoolTrackTableSize = 2048;
}
else
{
PoolTrackTableSize = max(1 << i, 64);
}
//
// Loop trying with the biggest specified size first, and cut it down
// by a power of two each iteration in case not enough memory exist
//
while (TRUE)
{
//
// Do not allow overflow
//
if ((PoolTrackTableSize + 1) > (MAXULONG_PTR / sizeof(POOL_TRACKER_TABLE)))
{
PoolTrackTableSize >>= 1;
continue;
}
//
// Allocate the tracker table and exit the loop if this worked
//
PoolTrackTable = MiAllocatePoolPages(NonPagedPool,
(PoolTrackTableSize + 1) *
sizeof(POOL_TRACKER_TABLE));
if (PoolTrackTable) break;
//
// Otherwise, as long as we're not down to the last bit, keep
// iterating
//
if (PoolTrackTableSize == 1)
{
KeBugCheckEx(MUST_SUCCEED_POOL_EMPTY,
TableSize,
0xFFFFFFFF,
0xFFFFFFFF,
0xFFFFFFFF);
}
PoolTrackTableSize >>= 1;
}
//
// Finally, add one entry, compute the hash, and zero the table
//
PoolTrackTableSize++;
PoolTrackTableMask = PoolTrackTableSize - 2;
RtlZeroMemory(PoolTrackTable,
PoolTrackTableSize * sizeof(POOL_TRACKER_TABLE));
//
// We now do the exact same thing with the tracker table for big pages
//
TableSize = min(PoolBigPageTableSize, MmSizeOfNonPagedPoolInBytes >> 8);
for (i = 0; i < 32; i++)
{
if (TableSize & 1)
{
ASSERT((TableSize & ~1) == 0);
if (!(TableSize & ~1)) break;
}
TableSize >>= 1;
}
//
// For big pages, the default tracker table is 4096 entries, while the
// minimum is still 64
//
if (i == 32)
{
PoolBigPageTableSize = 4096;
}
else
{
PoolBigPageTableSize = max(1 << i, 64);
}
//
// Again, run the exact same loop we ran earlier, but this time for the
// big pool tracker instead
//
while (TRUE)
{
if ((PoolBigPageTableSize + 1) > (MAXULONG_PTR / sizeof(POOL_TRACKER_BIG_PAGES)))
{
PoolBigPageTableSize >>= 1;
continue;
}
PoolBigPageTable = MiAllocatePoolPages(NonPagedPool,
PoolBigPageTableSize *
sizeof(POOL_TRACKER_BIG_PAGES));
if (PoolBigPageTable) break;
if (PoolBigPageTableSize == 1)
{
KeBugCheckEx(MUST_SUCCEED_POOL_EMPTY,
TableSize,
0xFFFFFFFF,
0xFFFFFFFF,
0xFFFFFFFF);
}
PoolBigPageTableSize >>= 1;
}
//
// An extra entry is not needed for for the big pool tracker, so just
// compute the hash and zero it
//
PoolBigPageTableHash = PoolBigPageTableSize - 1;
RtlZeroMemory(PoolBigPageTable,
PoolBigPageTableSize * sizeof(POOL_TRACKER_BIG_PAGES));
//
// During development, print this out so we can see what's happening
//
DPRINT1("EXPOOL: Pool Tracker Table at: 0x%p with 0x%lx bytes\n",
PoolTrackTable, PoolTrackTableSize * sizeof(POOL_TRACKER_TABLE));
DPRINT1("EXPOOL: Big Pool Tracker Table at: 0x%p with 0x%lx bytes\n",
PoolBigPageTable, PoolBigPageTableSize * sizeof(POOL_TRACKER_BIG_PAGES));
//
// No support for NUMA systems at this time
//
ASSERT(KeNumberNodes == 1);
//
// Initialize the tag spinlock
//
KeInitializeSpinLock(&ExpTaggedPoolLock);
//
// Initialize the nonpaged pool descriptor
//
@ -356,6 +530,11 @@ InitializePool(IN POOL_TYPE PoolType,
}
else
{
//
// No support for NUMA systems at this time
//
ASSERT(KeNumberNodes == 1);
//
// Allocate the pool descriptor
//

21
reactos/ntoskrnl/mm/ARM3/miarm.h
View file

@ -345,10 +345,29 @@ typedef struct _POOL_HEADER
C_ASSERT(sizeof(POOL_HEADER) == POOL_BLOCK_SIZE);
C_ASSERT(POOL_BLOCK_SIZE == sizeof(LIST_ENTRY));
typedef struct _POOL_TRACKER_TABLE
{
ULONG Key;
ULONG NonPagedAllocs;
ULONG NonPagedFrees;
SIZE_T NonPagedBytes;
ULONG PagedAllocs;
ULONG PagedFrees;
SIZE_T PagedBytes;
} POOL_TRACKER_TABLE, *PPOOL_TRACKER_TABLE;
typedef struct _POOL_TRACKER_BIG_PAGES
{
PVOID Va;
ULONG Key;
ULONG NumberOfPages;
PVOID QuotaObject;
} POOL_TRACKER_BIG_PAGES, *PPOOL_TRACKER_BIG_PAGES;
extern ULONG ExpNumberOfPagedPools;
extern POOL_DESCRIPTOR NonPagedPoolDescriptor;
extern PPOOL_DESCRIPTOR ExpPagedPoolDescriptor[16 + 1];
extern PVOID PoolTrackTable;
extern PPOOL_TRACKER_TABLE PoolTrackTable;
//
// END FIXFIX