/arch/mips/include/asm/pgalloc.h

http://github.com/mirrors/linux · C Header · 110 lines · 71 code · 25 blank · 14 comment · 3 complexity · 60fd9b29a43c0089ecb9ba986dcfc391 MD5 · raw file

  1. /*
  2. * This file is subject to the terms and conditions of the GNU General Public
  3. * License. See the file "COPYING" in the main directory of this archive
  4. * for more details.
  5. *
  6. * Copyright (C) 1994 - 2001, 2003 by Ralf Baechle
  7. * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc.
  8. */
  9. #ifndef _ASM_PGALLOC_H
  10. #define _ASM_PGALLOC_H
  11. #include <linux/highmem.h>
  12. #include <linux/mm.h>
  13. #include <linux/sched.h>
  14. #include <asm-generic/pgalloc.h> /* for pte_{alloc,free}_one */
  15. static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
  16. pte_t *pte)
  17. {
  18. set_pmd(pmd, __pmd((unsigned long)pte));
  19. }
  20. static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
  21. pgtable_t pte)
  22. {
  23. set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
  24. }
  25. #define pmd_pgtable(pmd) pmd_page(pmd)
  26. /*
  27. * Initialize a new pmd table with invalid pointers.
  28. */
  29. extern void pmd_init(unsigned long page, unsigned long pagetable);
  30. #ifndef __PAGETABLE_PMD_FOLDED
  31. static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
  32. {
  33. set_pud(pud, __pud((unsigned long)pmd));
  34. }
  35. #endif
  36. /*
  37. * Initialize a new pgd / pmd table with invalid pointers.
  38. */
  39. extern void pgd_init(unsigned long page);
  40. extern pgd_t *pgd_alloc(struct mm_struct *mm);
  41. static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  42. {
  43. free_pages((unsigned long)pgd, PGD_ORDER);
  44. }
  45. #define __pte_free_tlb(tlb,pte,address) \
  46. do { \
  47. pgtable_pte_page_dtor(pte); \
  48. tlb_remove_page((tlb), pte); \
  49. } while (0)
  50. #ifndef __PAGETABLE_PMD_FOLDED
  51. static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
  52. {
  53. pmd_t *pmd;
  54. pmd = (pmd_t *) __get_free_pages(GFP_KERNEL, PMD_ORDER);
  55. if (pmd)
  56. pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table);
  57. return pmd;
  58. }
  59. static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
  60. {
  61. free_pages((unsigned long)pmd, PMD_ORDER);
  62. }
  63. #define __pmd_free_tlb(tlb, x, addr) pmd_free((tlb)->mm, x)
  64. #endif
  65. #ifndef __PAGETABLE_PUD_FOLDED
  66. static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
  67. {
  68. pud_t *pud;
  69. pud = (pud_t *) __get_free_pages(GFP_KERNEL, PUD_ORDER);
  70. if (pud)
  71. pud_init((unsigned long)pud, (unsigned long)invalid_pmd_table);
  72. return pud;
  73. }
  74. static inline void pud_free(struct mm_struct *mm, pud_t *pud)
  75. {
  76. free_pages((unsigned long)pud, PUD_ORDER);
  77. }
  78. static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud)
  79. {
  80. set_p4d(p4d, __p4d((unsigned long)pud));
  81. }
  82. #define __pud_free_tlb(tlb, x, addr) pud_free((tlb)->mm, x)
  83. #endif /* __PAGETABLE_PUD_FOLDED */
  84. extern void pagetable_init(void);
  85. #endif /* _ASM_PGALLOC_H */