/arch/sparc/include/asm/pgalloc_64.h

https://bitbucket.org/ndreys/linux-sunxi · C++ Header · 84 lines · 65 code · 18 blank · 1 comment · 1 complexity · eb6e6f98023976f7a711f6dc39c21696 MD5 · raw file 

    

  1. #ifndef _SPARC64_PGALLOC_H
    2. 

  2. #define _SPARC64_PGALLOC_H
    3. 

  3. 

  4. #include <linux/kernel.h>
    5. 

  5. #include <linux/sched.h>
    6. 

  6. #include <linux/mm.h>
    7. 

  7. #include <linux/slab.h>
    8. 

  8. #include <linux/quicklist.h>
    9. 

  9. 

  10. #include <asm/spitfire.h>
    11. 

  11. #include <asm/cpudata.h>
    12. 

  12. #include <asm/cacheflush.h>
    13. 

  13. #include <asm/page.h>
    14. 

  14. 

  15. /* Page table allocation/freeing. */
    16. 

  16. 

  17. static inline pgd_t *pgd_alloc(struct mm_struct *mm)
    18. 

  18. {
    19. 

  19. 	return quicklist_alloc(0, GFP_KERNEL, NULL);
    20. 

  20. }
    21. 

  21. 

  22. static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
    23. 

  23. {
    24. 

  24. 	quicklist_free(0, NULL, pgd);
    25. 

  25. }
    26. 

  26. 

  27. #define pud_populate(MM, PUD, PMD)	pud_set(PUD, PMD)
    28. 

  28. 

  29. static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
    30. 

  30. {
    31. 

  31. 	return quicklist_alloc(0, GFP_KERNEL, NULL);
    32. 

  32. }
    33. 

  33. 

  34. static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
    35. 

  35. {
    36. 

  36. 	quicklist_free(0, NULL, pmd);
    37. 

  37. }
    38. 

  38. 

  39. static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
    40. 

  40. 					  unsigned long address)
    41. 

  41. {
    42. 

  42. 	return quicklist_alloc(0, GFP_KERNEL, NULL);
    43. 

  43. }
    44. 

  44. 

  45. static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
    46. 

  46. 					unsigned long address)
    47. 

  47. {
    48. 

  48. 	struct page *page;
    49. 

  49. 	void *pg;
    50. 

  50. 

  51. 	pg = quicklist_alloc(0, GFP_KERNEL, NULL);
    52. 

  52. 	if (!pg)
    53. 

  53. 		return NULL;
    54. 

  54. 	page = virt_to_page(pg);
    55. 

  55. 	pgtable_page_ctor(page);
    56. 

  56. 	return page;
    57. 

  57. }
    58. 

  58. 

  59. static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
    60. 

  60. {
    61. 

  61. 	quicklist_free(0, NULL, pte);
    62. 

  62. }
    63. 

  63. 

  64. static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
    65. 

  65. {
    66. 

  66. 	pgtable_page_dtor(ptepage);
    67. 

  67. 	quicklist_free_page(0, NULL, ptepage);
    68. 

  68. }
    69. 

  69. 

  70. 

  71. #define pmd_populate_kernel(MM, PMD, PTE)	pmd_set(PMD, PTE)
    72. 

  72. #define pmd_populate(MM,PMD,PTE_PAGE)		\
    73. 

  73. 	pmd_populate_kernel(MM,PMD,page_address(PTE_PAGE))
    74. 

  74. #define pmd_pgtable(pmd) pmd_page(pmd)
    75. 

  75. 

  76. static inline void check_pgt_cache(void)
    77. 

  77. {
    78. 

  78. 	quicklist_trim(0, NULL, 25, 16);
    79. 

  79. }
    80. 

  80. 

  81. #define __pte_free_tlb(tlb, pte, addr)	pte_free((tlb)->mm, pte)
    82. 

  82. #define __pmd_free_tlb(tlb, pmd, addr)	pmd_free((tlb)->mm, pmd)
    83. 

  83. 

  84. #endif /* _SPARC64_PGALLOC_H */
    85.