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x86: unify pte_index

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Impact: cleanup

Unify and demacro pte_index.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
This commit is contained in:
Jeremy Fitzhardinge
2009-02-05 11:31:06 -08:00
parent 97e2817d34
commit 346309cff6
3 changed files with 11 additions and 9 deletions
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11
arch/x86/include/asm/pgtable.h
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@ -498,6 +498,17 @@ static inline unsigned pmd_index(unsigned long address)
*/
#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
/*
* the pte page can be thought of an array like this: pte_t[PTRS_PER_PTE]
*
* this function returns the index of the entry in the pte page which would
* control the given virtual address
*/
static inline unsigned pte_index(unsigned long address)
{
return (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
}
#if PAGETABLE_LEVELS > 2
static inline int pud_present(pud_t pud)
{