2008-03-17 23:36:55 +00:00
|
|
|
#ifndef _ASM_X86_PGALLOC_H
|
|
|
|
|
#define _ASM_X86_PGALLOC_H
|
|
|
|
|
|
|
|
|
|
#include <linux/threads.h>
|
|
|
|
|
#include <linux/mm.h> /* for struct page */
|
|
|
|
|
#include <linux/pagemap.h>
|
|
|
|
|
|
2008-03-17 23:36:56 +00:00
|
|
|
#ifdef CONFIG_PARAVIRT
|
|
|
|
|
#include <asm/paravirt.h>
|
|
|
|
|
#else
|
|
|
|
|
#define paravirt_alloc_pt(mm, pfn) do { } while (0)
|
|
|
|
|
#define paravirt_alloc_pd(mm, pfn) do { } while (0)
|
|
|
|
|
#define paravirt_alloc_pd_clone(pfn, clonepfn, start, count) do { } while (0)
|
|
|
|
|
#define paravirt_release_pt(pfn) do { } while (0)
|
|
|
|
|
#define paravirt_release_pd(pfn) do { } while (0)
|
|
|
|
|
#endif
|
|
|
|
|
|
2008-03-17 23:36:55 +00:00
|
|
|
/*
|
|
|
|
|
* Allocate and free page tables.
|
|
|
|
|
*/
|
|
|
|
|
extern pgd_t *pgd_alloc(struct mm_struct *);
|
|
|
|
|
extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
|
|
|
|
|
|
|
|
|
|
extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
|
|
|
|
|
extern pgtable_t pte_alloc_one(struct mm_struct *, unsigned long);
|
|
|
|
|
|
2008-03-17 23:36:57 +00:00
|
|
|
/* Should really implement gc for free page table pages. This could be
|
|
|
|
|
done with a reference count in struct page. */
|
|
|
|
|
|
|
|
|
|
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
|
|
|
|
|
{
|
|
|
|
|
BUG_ON((unsigned long)pte & (PAGE_SIZE-1));
|
|
|
|
|
free_page((unsigned long)pte);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline void pte_free(struct mm_struct *mm, struct page *pte)
|
|
|
|
|
{
|
|
|
|
|
__free_page(pte);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
extern void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte);
|
|
|
|
|
|
2007-10-11 09:20:03 +00:00
|
|
|
#ifdef CONFIG_X86_32
|
|
|
|
|
# include "pgalloc_32.h"
|
|
|
|
|
#else
|
|
|
|
|
# include "pgalloc_64.h"
|
|
|
|
|
#endif
|
2008-03-17 23:36:55 +00:00
|
|
|
|
|
|
|
|
#endif /* _ASM_X86_PGALLOC_H */
|
