page_alloc.c File Reference

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Classes
struct	page_cache_entry
Defines
#define	DEBUG_PAGE_ALLOC   0
#define	DDE_PAGE_CACHE_SHIFT   10
#define	DDE_PAGE_CACHE_SIZE   (1 << DDE_PAGE_CACHE_SHIFT)
#define	DDE_PAGE_CACHE_MASK   (DDE_PAGE_CACHE_SIZE - 1)
#define	VIRT_TO_PAGEHASH(a)   ((((unsigned long)a) >> PAGE_SHIFT) & DDE_PAGE_CACHE_MASK)
	Hash function to map virtual addresses to page cache buckets.
Functions
void	dde_page_cache_add (struct page *p)
void	dde_page_cache_remove (struct page *p)
struct page *	dde_page_lookup (unsigned long va)
struct page *	__alloc_pages_internal (gfp_t gfp_mask, unsigned int order, struct zonelist *zonelist, nodemask_t *nm)
unsigned long	__get_free_pages (gfp_t gfp_mask, unsigned int order)
unsigned long	get_zeroed_page (gfp_t gfp_mask)
void	free_hot_page (struct page *page)
void	__free_pages (struct page *page, unsigned int order)
void	__pagevec_free (struct pagevec *pvec)
int	get_user_pages (struct task_struct *tsk, struct mm_struct *mm, unsigned long start, int len, int write, int force, struct page **pages, struct vm_area_struct **vmas)
void	free_pages (unsigned long addr, unsigned int order)
unsigned long	__pa (volatile void *addr)
void *	__va (unsigned long addr)
int	set_page_dirty_lock (struct page *page)
void *__init	alloc_large_system_hash (const char *tablename, unsigned long bucketsize, unsigned long numentries, int scale, int flags, unsigned int *_hash_shift, unsigned int *_hash_mask, unsigned long limit)
static void __init	dde_page_cache_init (void)
	core_initcall (dde_page_cache_init)
Variables
unsigned long	max_low_pfn
unsigned long	min_low_pfn
unsigned long	max_pfn
static struct hlist_head	dde_page_cache [DDE_PAGE_CACHE_SIZE]

---

Define Documentation

#define DDE_PAGE_CACHE_MASK   (DDE_PAGE_CACHE_SIZE - 1)

Definition at line 58 of file page_alloc.c.

#define DDE_PAGE_CACHE_SHIFT   10

Definition at line 56 of file page_alloc.c.

#define DDE_PAGE_CACHE_SIZE   (1 << DDE_PAGE_CACHE_SHIFT)

Definition at line 57 of file page_alloc.c.

#define DEBUG_PAGE_ALLOC   0

Definition at line 43 of file page_alloc.c.

#define VIRT_TO_PAGEHASH

(

a

)

((((unsigned long)a) >> PAGE_SHIFT) & DDE_PAGE_CACHE_MASK)

Hash function to map virtual addresses to page cache buckets.

Definition at line 69 of file page_alloc.c.

---

Function Documentation

struct page* __alloc_pages_internal	(	gfp_t	gfp_mask,
		unsigned int	order,
		struct zonelist *	zonelist,
		nodemask_t *	nm
	)			[read]

Definition at line 129 of file page_alloc.c.

void __free_pages	(	struct page *	page,
		unsigned int	order
	)

Definition at line 175 of file page_alloc.c.

unsigned long __get_free_pages	(	gfp_t	gfp_mask,
		unsigned int	order
	)

Definition at line 144 of file page_alloc.c.

unsigned long __pa

(

volatile void *

addr

)

Definition at line 208 of file page_alloc.c.

void __pagevec_free

(

struct pagevec *

pvec

)

Definition at line 181 of file page_alloc.c.

void* __va

(

unsigned long

addr

)

Definition at line 213 of file page_alloc.c.

void* __init alloc_large_system_hash	(	const char *	tablename,
		unsigned long	bucketsize,
		unsigned long	numentries,
		int	scale,
		int	flags,
		unsigned int *	_hash_shift,
		unsigned int *	_hash_mask,
		unsigned long	limit
	)

Definition at line 229 of file page_alloc.c.

core_initcall

(

dde_page_cache_init

)

void dde_page_cache_add

(

struct page *

p

)

Definition at line 72 of file page_alloc.c.

static void __init dde_page_cache_init

(

void

)

[static]

Definition at line 272 of file page_alloc.c.

void dde_page_cache_remove

(

struct page *

p

)

Definition at line 89 of file page_alloc.c.

struct page* dde_page_lookup

(

unsigned long

va

)

[read]

Definition at line 112 of file page_alloc.c.

void free_hot_page

(

struct page *

page

)

Definition at line 166 of file page_alloc.c.

void free_pages	(	unsigned long	addr,
		unsigned int	order
	)

..

XXX order may be larger than allocation at 'addr' - it may comprise several allocation via __get_free_pages()!

Definition at line 200 of file page_alloc.c.

int get_user_pages	(	struct task_struct *	tsk,
		struct mm_struct *	mm,
		unsigned long	start,
		int	len,
		int	write,
		int	force,
		struct page **	pages,
		struct vm_area_struct **	vmas
	)

Definition at line 186 of file page_alloc.c.

unsigned long get_zeroed_page

(

gfp_t

gfp_mask

)

Definition at line 156 of file page_alloc.c.

int set_page_dirty_lock

(

struct page *

page

)

Definition at line 219 of file page_alloc.c.

---

Variable Documentation

struct hlist_head dde_page_cache[DDE_PAGE_CACHE_SIZE] [static]

Definition at line 66 of file page_alloc.c.

unsigned long max_low_pfn

Definition at line 35 of file page_alloc.c.

unsigned long max_pfn

Definition at line 37 of file page_alloc.c.

unsigned long min_low_pfn

Definition at line 36 of file page_alloc.c.