1#ifndef _ASM_SCORE_PGALLOC_H 2#define _ASM_SCORE_PGALLOC_H 3 4#include <linux/mm.h> 5 6static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, 7 pte_t *pte) 8{ 9 set_pmd(pmd, __pmd((unsigned long)pte)); 10} 11 12static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, 13 pgtable_t pte) 14{ 15 set_pmd(pmd, __pmd((unsigned long)page_address(pte))); 16} 17 18#define pmd_pgtable(pmd) pmd_page(pmd) 19 20static inline pgd_t *pgd_alloc(struct mm_struct *mm) 21{ 22 pgd_t *ret, *init; 23 24 ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER); 25 if (ret) { 26 init = pgd_offset(&init_mm, 0UL); 27 pgd_init((unsigned long)ret); 28 memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD, 29 (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t)); 30 } 31 32 return ret; 33} 34 35static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) 36{ 37 free_pages((unsigned long)pgd, PGD_ORDER); 38} 39 40static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, 41 unsigned long address) 42{ 43 pte_t *pte; 44 45 pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 46 PTE_ORDER); 47 48 return pte; 49} 50 51static inline struct page *pte_alloc_one(struct mm_struct *mm, 52 unsigned long address) 53{ 54 struct page *pte; 55 56 pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER); 57 if (pte) { 58 clear_highpage(pte); 59 pgtable_page_ctor(pte); 60 } 61 return pte; 62} 63 64static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) 65{ 66 free_pages((unsigned long)pte, PTE_ORDER); 67} 68 69static inline void pte_free(struct mm_struct *mm, pgtable_t pte) 70{ 71 pgtable_page_dtor(pte); 72 __free_pages(pte, PTE_ORDER); 73} 74 75#define __pte_free_tlb(tlb, pte, buf) \ 76do { \ 77 pgtable_page_dtor(pte); \ 78 tlb_remove_page((tlb), pte); \ 79} while (0) 80 81#define check_pgt_cache() do {} while (0) 82 83#endif /* _ASM_SCORE_PGALLOC_H */ 84