/arch/powerpc/include/asm/pgalloc.h

https://github.com/aicjofs/android_kernel_lge_v500_20d · C Header · 68 lines · 57 code · 11 blank · 0 comment · 0 complexity · 8156488a617697ec88c5740ebb1bf031 MD5 · raw file 

    

  1. #ifndef _ASM_POWERPC_PGALLOC_H
    2. 

  2. #define _ASM_POWERPC_PGALLOC_H
    3. 

  3. #ifdef __KERNEL__
    4. 

  4. 

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

  6. 

  7. #ifdef CONFIG_PPC_BOOK3E
    8. 

  8. extern void tlb_flush_pgtable(struct mmu_gather *tlb, unsigned long address);
    9. 

  9. #else /* CONFIG_PPC_BOOK3E */
    10. 

  10. static inline void tlb_flush_pgtable(struct mmu_gather *tlb,
    11. 

  11. 				     unsigned long address)
    12. 

  12. {
    13. 

  13. }
    14. 

  14. #endif /* !CONFIG_PPC_BOOK3E */
    15. 

  15. 

  16. static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
    17. 

  17. {
    18. 

  18. 	free_page((unsigned long)pte);
    19. 

  19. }
    20. 

  20. 

  21. static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
    22. 

  22. {
    23. 

  23. 	pgtable_page_dtor(ptepage);
    24. 

  24. 	__free_page(ptepage);
    25. 

  25. }
    26. 

  26. 

  27. #ifdef CONFIG_PPC64
    28. 

  28. #include <asm/pgalloc-64.h>
    29. 

  29. #else
    30. 

  30. #include <asm/pgalloc-32.h>
    31. 

  31. #endif
    32. 

  32. 

  33. #ifdef CONFIG_SMP
    34. 

  34. struct mmu_gather;
    35. 

  35. extern void tlb_remove_table(struct mmu_gather *, void *);
    36. 

  36. 

  37. static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift)
    38. 

  38. {
    39. 

  39. 	unsigned long pgf = (unsigned long)table;
    40. 

  40. 	BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
    41. 

  41. 	pgf |= shift;
    42. 

  42. 	tlb_remove_table(tlb, (void *)pgf);
    43. 

  43. }
    44. 

  44. 

  45. static inline void __tlb_remove_table(void *_table)
    46. 

  46. {
    47. 

  47. 	void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE);
    48. 

  48. 	unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE;
    49. 

  49. 

  50. 	pgtable_free(table, shift);
    51. 

  51. }
    52. 

  52. #else /* CONFIG_SMP */
    53. 

  53. static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, unsigned shift)
    54. 

  54. {
    55. 

  55. 	pgtable_free(table, shift);
    56. 

  56. }
    57. 

  57. #endif /* !CONFIG_SMP */
    58. 

  58. 

  59. static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *ptepage,
    60. 

  60. 				  unsigned long address)
    61. 

  61. {
    62. 

  62. 	tlb_flush_pgtable(tlb, address);
    63. 

  63. 	pgtable_page_dtor(ptepage);
    64. 

  64. 	pgtable_free_tlb(tlb, page_address(ptepage), 0);
    65. 

  65. }
    66. 

  66. 

  67. #endif /* __KERNEL__ */
    68. 

  68. #endif /* _ASM_POWERPC_PGALLOC_H */
    69.