/* * This file is subject to the terms and conditions of the GNU General Public * License.  See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1994 - 2001, 2003 by Ralf Baechle * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc. */#ifndef _ASM_PGALLOC_H#define _ASM_PGALLOC_H #include <linux/highmem.h>#include <linux/mm.h>#include <linux/sched.h> #define __HAVE_ARCH_PMD_ALLOC_ONE#define __HAVE_ARCH_PUD_ALLOC_ONE#define __HAVE_ARCH_PGD_FREE#include <asm-generic/pgalloc.h> static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,	pte_t *pte){	set_pmd(pmd, __pmd((unsigned long)pte));} static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,	pgtable_t pte){	set_pmd(pmd, __pmd((unsigned long)page_address(pte)));} /* * Initialize a new pmd table with invalid pointers. */extern void pmd_init(void *addr); #ifndef __PAGETABLE_PMD_FOLDED static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd){	set_pud(pud, __pud((unsigned long)pmd));}#endif /* * Initialize a new pgd table with invalid pointers. */extern void pgd_init(void *addr);extern pgd_t *pgd_alloc(struct mm_struct *mm); static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd){	pagetable_free(virt_to_ptdesc(pgd));} #define __pte_free_tlb(tlb, pte, address)			\do {								\	pagetable_pte_dtor(page_ptdesc(pte));			\	tlb_remove_page_ptdesc((tlb), page_ptdesc(pte));	\} while (0) #ifndef __PAGETABLE_PMD_FOLDED static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address){	pmd_t *pmd;	struct ptdesc *ptdesc; 	ptdesc = pagetable_alloc(GFP_KERNEL_ACCOUNT, PMD_TABLE_ORDER);	if (!ptdesc)		return NULL; 	if (!pagetable_pmd_ctor(ptdesc)) {		pagetable_free(ptdesc);		return NULL;	} 	pmd = ptdesc_address(ptdesc);	pmd_init(pmd);	return pmd;} #define __pmd_free_tlb(tlb, x, addr)	pmd_free((tlb)->mm, x) #endif #ifndef __PAGETABLE_PUD_FOLDED static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address){	pud_t *pud;	struct ptdesc *ptdesc = pagetable_alloc(GFP_KERNEL & ~__GFP_HIGHMEM,			PUD_TABLE_ORDER); 	if (!ptdesc)		return NULL;	pagetable_pud_ctor(ptdesc);	pud = ptdesc_address(ptdesc); 	pud_init(pud);	return pud;} static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud){	set_p4d(p4d, __p4d((unsigned long)pud));} #define __pud_free_tlb(tlb, x, addr)	pud_free((tlb)->mm, x) #endif /* __PAGETABLE_PUD_FOLDED */ extern void pagetable_init(void); #endif /* _ASM_PGALLOC_H */