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- Move MiGetPfnEntry into arch-independent mm.h header, along with a few defines, structures, and function prototypes which are going to be used with the new pool implementation in future.

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- Add two new fields into PHYSICAL_PAGE structure, they will be used (in the future new pool implementation) to find end/start of a non-paged pool allocation without storing the actual pointers (based on NTs own PFN entry optimization for this) - thanks to Alex for providing this great idea!

svn path=/trunk/; revision=32630
This commit is contained in:
Aleksey Bragin 2008-03-09 21:15:12 +00:00
parent a5ffbcd185
commit 1a8cf7342c
2 changed files with 73 additions and 23 deletions
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72
reactos/ntoskrnl/include/internal/mm.h
View file

@ -56,6 +56,12 @@ typedef ULONG PFN_TYPE, *PPFN_TYPE;
#define MM_PAGEOP_PAGESYNCH (3)
#define MM_PAGEOP_ACCESSFAULT (4)
/* Number of list heads to use */
#define MI_FREE_POOL_LISTS 4
/* Signature of free pool blocks */
#define MM_FREE_POOL_TAG TAG('F', 'r', 'p', 'l')
#define PAGE_TO_SECTION_PAGE_DIRECTORY_OFFSET(x) \
((x) / (4*1024*1024))
@ -275,6 +281,8 @@ typedef struct _PHYSICAL_PAGE
ULONG Type: 2;
ULONG Consumer: 3;
ULONG Zero: 1;
ULONG StartOfAllocation: 1;
ULONG EndOfAllocation: 1;
}
Flags;
ULONG AllFlags;
@ -337,6 +345,28 @@ typedef struct _MM_REGION
LIST_ENTRY RegionListEntry;
} MM_REGION, *PMM_REGION;
/* Entry describing free pool memory */
typedef struct _MMFREE_POOL_ENTRY
{
LIST_ENTRY List;
PFN_NUMBER Size;
ULONG Signature;
struct _MMFREE_POOL_ENTRY *Owner;
} MMFREE_POOL_ENTRY, *PMMFREE_POOL_ENTRY;
/* Paged pool information */
typedef struct _MM_PAGED_POOL_INFO
{
PRTL_BITMAP PagedPoolAllocationMap;
PRTL_BITMAP EndOfPagedPoolBitmap;
PMMPTE FirstPteForPagedPool;
PMMPTE LastPteForPagedPool;
PMMPTE NextPdeForPagedPoolExpansion;
ULONG PagedPoolHint;
SIZE_T PagedPoolCommit;
SIZE_T AllocatedPagedPool;
} MM_PAGED_POOL_INFO, *PMM_PAGED_POOL_INFO;
extern MM_MEMORY_CONSUMER MiMemoryConsumers[MC_MAXIMUM];
typedef VOID
@ -487,6 +517,25 @@ VOID
NTAPI
MiInitializeNonPagedPool(VOID);
PVOID
NTAPI
MiAllocatePoolPages(
IN POOL_TYPE PoolType,
IN SIZE_T SizeInBytes
);
POOL_TYPE
NTAPI
MmDeterminePoolType(
IN PVOID VirtualAddress
);
ULONG
NTAPI
MiFreePoolPages(
IN PVOID StartingAddress
);
PVOID
NTAPI
MmGetMdlPageAddress(
@ -936,6 +985,29 @@ MmPageOutPhysicalAddress(PFN_TYPE Page);
/* freelist.c **********************************************************/
#define ASSERT_PFN(x) ASSERT((x)->Flags.Type != 0)
FORCEINLINE
PPHYSICAL_PAGE
MiGetPfnEntry(IN PFN_TYPE Pfn)
{
PPHYSICAL_PAGE Page;
extern PPHYSICAL_PAGE MmPageArray;
extern ULONG MmPageArraySize;
/* Make sure the PFN number is valid */
ASSERT(Pfn <= MmPageArraySize);
/* Get the entry */
Page = &MmPageArray[Pfn];
/* Make sure it's valid */
ASSERT_PFN(Page);
/* Return it */
return Page;
};
PFN_TYPE
NTAPI
MmGetLRUNextUserPage(PFN_TYPE PreviousPage);

24
reactos/ntoskrnl/mm/freelist.c
View file

@ -25,12 +25,9 @@
#define MM_PHYSICAL_PAGE_USED (0x2)
#define MM_PHYSICAL_PAGE_BIOS (0x3)
#define ASSERT_PFN(x) ASSERT((x)->Flags.Type != 0)
/* GLOBALS ****************************************************************/
static PPHYSICAL_PAGE MmPageArray;
PPHYSICAL_PAGE MmPageArray;
ULONG MmPageArraySize;
static KSPIN_LOCK PageListLock;
@ -45,25 +42,6 @@ static ULONG UnzeroedPageCount = 0;
/* FUNCTIONS *************************************************************/
FORCEINLINE
PPHYSICAL_PAGE
MiGetPfnEntry(IN PFN_TYPE Pfn)
{
PPHYSICAL_PAGE Page;
/* Make sure the PFN number is valid */
ASSERT(Pfn <= MmPageArraySize);
/* Get the entry */
Page = &MmPageArray[Pfn];
/* Make sure it's valid */
ASSERT_PFN(Page);
/* Return it */
return Page;
}
PFN_TYPE
NTAPI
MmGetLRUFirstUserPage(VOID)