page_no.h File Reference

Go to the source code of this file.

Macros
#define	get_user_page(vaddr)   __get_free_page(GFP_KERNEL)
#define	free_user_page(page, addr)   free_page(addr)
#define	clear_page(page)   memset((page), 0, PAGE_SIZE)
#define	copy_page(to, from)   memcpy((to), (from), PAGE_SIZE)
#define	clear_user_page(page, vaddr, pg)   clear_page(page)
#define	copy_user_page(to, from, vaddr, pg)   copy_page(to, from)
#define	__alloc_zeroed_user_highpage(movableflags, vma, vaddr)   alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
#define	__HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
#define	__pa(vaddr)   ((unsigned long)(vaddr))
#define	__va(paddr)   ((void *)(paddr))
#define	virt_to_pfn(kaddr)   (__pa(kaddr) >> PAGE_SHIFT)
#define	pfn_to_virt(pfn)   __va((pfn) << PAGE_SHIFT)
#define	virt_to_page(addr)   (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
#define	page_to_virt(page)   ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
#define	pfn_to_page(pfn)   virt_to_page(pfn_to_virt(pfn))
#define	page_to_pfn(page)   virt_to_pfn(page_to_virt(page))
#define	pfn_valid(pfn)   ((pfn) < max_mapnr)
#define	virt_addr_valid(kaddr)

Variables
unsigned long	memory_start
unsigned long	memory_end

Macro Definition Documentation

#define __alloc_zeroed_user_highpage	(		movableflags,
			vma,
			vaddr
	)		alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)

Definition at line 18 of file page_no.h.

#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE

Definition at line 20 of file page_no.h.

#define __pa

(

vaddr

)

((unsigned long)(vaddr))

Definition at line 22 of file page_no.h.

#define __va

(

paddr

)

((void *)(paddr))

Definition at line 23 of file page_no.h.

#define clear_page

(

page

)

memset((page), 0, PAGE_SIZE)

Definition at line 12 of file page_no.h.

#define clear_user_page	(		page,
			vaddr,
			pg
	)		clear_page(page)

Definition at line 15 of file page_no.h.

#define copy_page	(		to,
			from
	)		memcpy((to), (from), PAGE_SIZE)

Definition at line 13 of file page_no.h.

#define copy_user_page	(		to,
			from,
			vaddr,
			pg
	)		copy_page(to, from)

Definition at line 16 of file page_no.h.

#define free_user_page	(		page,
			addr
	)		free_page(addr)

Definition at line 10 of file page_no.h.

#define get_user_page

(

vaddr

)

__get_free_page(GFP_KERNEL)

Definition at line 9 of file page_no.h.

#define page_to_pfn

(

page

)

virt_to_pfn(page_to_virt(page))

Definition at line 32 of file page_no.h.

#define page_to_virt

(

page

)

((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)

Definition at line 29 of file page_no.h.

#define pfn_to_page

(

pfn

)

virt_to_page(pfn_to_virt(pfn))

Definition at line 31 of file page_no.h.

#define pfn_to_virt

(

pfn

)

__va((pfn) << PAGE_SHIFT)

Definition at line 26 of file page_no.h.

#define pfn_valid

(

pfn

)

((pfn) < max_mapnr)

Definition at line 33 of file page_no.h.

#define virt_addr_valid

(

kaddr

)

Value:

(((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
                ((void *)(kaddr) < (void *)memory_end))

Definition at line 35 of file page_no.h.

#define virt_to_page

(

addr

)

(mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))

Definition at line 28 of file page_no.h.

#define virt_to_pfn

(

kaddr

)

(__pa(kaddr) >> PAGE_SHIFT)

Definition at line 25 of file page_no.h.

Variable Documentation

unsigned long memory_end

Definition at line 42 of file setup.c.

unsigned long memory_start

Definition at line 42 of file setup.c.