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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-arm/] [page.h] - Blame information for rev 1774

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1 1276 phoenix
#ifndef _ASMARM_PAGE_H
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#define _ASMARM_PAGE_H
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#include <asm/proc/page.h>
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#define PAGE_SIZE       (1UL << PAGE_SHIFT)
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#define PAGE_MASK       (~(PAGE_SIZE-1))
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#ifdef __KERNEL__
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#ifndef __ASSEMBLY__
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#define STRICT_MM_TYPECHECKS
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#define clear_page(page)        memzero((void *)(page), PAGE_SIZE)
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extern void copy_page(void *to, void *from);
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#define clear_user_page(page, vaddr)    clear_page(page)
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#define copy_user_page(to, from, vaddr) copy_page(to, from)
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#ifdef STRICT_MM_TYPECHECKS
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/*
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 * These are used to make use of C type-checking..
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 */
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typedef struct { unsigned long pte; } pte_t;
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typedef struct { unsigned long pmd; } pmd_t;
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typedef struct { unsigned long pgd; } pgd_t;
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typedef struct { unsigned long pgprot; } pgprot_t;
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#define pte_val(x)      ((x).pte)
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#define pmd_val(x)      ((x).pmd)
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#define pgd_val(x)      ((x).pgd)
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#define pgprot_val(x)   ((x).pgprot)
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#define __pte(x)        ((pte_t) { (x) } )
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#define __pmd(x)        ((pmd_t) { (x) } )
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#define __pgd(x)        ((pgd_t) { (x) } )
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#define __pgprot(x)     ((pgprot_t) { (x) } )
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#else
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/*
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 * .. while these make it easier on the compiler
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 */
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typedef unsigned long pte_t;
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typedef unsigned long pmd_t;
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typedef unsigned long pgd_t;
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typedef unsigned long pgprot_t;
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#define pte_val(x)      (x)
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#define pmd_val(x)      (x)
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#define pgd_val(x)      (x)
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#define pgprot_val(x)   (x)
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#define __pte(x)        (x)
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#define __pmd(x)        (x)
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#define __pgd(x)        (x)
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#define __pgprot(x)     (x)
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#endif
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#endif /* !__ASSEMBLY__ */
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/* to align the pointer to the (next) page boundary */
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#define PAGE_ALIGN(addr)        (((addr)+PAGE_SIZE-1)&PAGE_MASK)
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#ifndef __ASSEMBLY__
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#ifdef CONFIG_DEBUG_BUGVERBOSE
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extern void __bug(const char *file, int line, void *data);
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/* give file/line information */
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#define BUG()           __bug(__FILE__, __LINE__, NULL)
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#define PAGE_BUG(page)  __bug(__FILE__, __LINE__, page)
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#else
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/* these just cause an oops */
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#define BUG()           (*(int *)0 = 0)
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#define PAGE_BUG(page)  (*(int *)0 = 0)
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#endif
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/* Pure 2^n version of get_order */
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static inline int get_order(unsigned long size)
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{
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        int order;
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        size = (size-1) >> (PAGE_SHIFT-1);
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        order = -1;
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        do {
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                size >>= 1;
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                order++;
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        } while (size);
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        return order;
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}
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#endif /* !__ASSEMBLY__ */
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#include <linux/config.h>
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#include <asm/memory.h>
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#define VM_DATA_DEFAULT_FLAGS   (VM_READ | VM_WRITE | VM_EXEC | \
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                                 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
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#endif /* __KERNEL__ */
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#endif

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