arch/sparc/include/asm/pgalloc_64.h

   1 #ifndef _SPARC64_PGALLOC_H
   2 #define _SPARC64_PGALLOC_H
   3
   4 #include <linux/kernel.h>
   5 #include <linux/sched.h>
   6 #include <linux/mm.h>
   7 #include <linux/slab.h>
   8
   9 #include <asm/spitfire.h>
  10 #include <asm/cpudata.h>
  11 #include <asm/cacheflush.h>
  12 #include <asm/page.h>
  13
  14 /* Page table allocation/freeing. */
  15
  16 extern struct kmem_cache *pgtable_cache;
  17
  18 static inline void __pgd_populate(pgd_t *pgd, pud_t *pud)
  19 {
  20         pgd_set(pgd, pud);
  21 }
  22
  23 #define pgd_populate(MM, PGD, PUD)      __pgd_populate(PGD, PUD)
  24
  25 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
  26 {
  27         return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
  28 }
  29
  30 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  31 {
  32         kmem_cache_free(pgtable_cache, pgd);
  33 }
  34
  35 static inline void __pud_populate(pud_t *pud, pmd_t *pmd)
  36 {
  37         pud_set(pud, pmd);
  38 }
  39
  40 #define pud_populate(MM, PUD, PMD)      __pud_populate(PUD, PMD)
  41
  42 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
  43 {
  44         return kmem_cache_alloc(pgtable_cache,
  45                                 GFP_KERNEL|__GFP_REPEAT);
  46 }
  47
  48 static inline void pud_free(struct mm_struct *mm, pud_t *pud)
  49 {
  50         kmem_cache_free(pgtable_cache, pud);
  51 }
  52
  53 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
  54 {
  55         return kmem_cache_alloc(pgtable_cache,
  56                                 GFP_KERNEL|__GFP_REPEAT);
  57 }
  58
  59 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
  60 {
  61         kmem_cache_free(pgtable_cache, pmd);
  62 }
  63
  64 pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
  65                             unsigned long address);
  66 pgtable_t pte_alloc_one(struct mm_struct *mm,
  67                         unsigned long address);
  68 void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
  69 void pte_free(struct mm_struct *mm, pgtable_t ptepage);
  70
  71 #define pmd_populate_kernel(MM, PMD, PTE)       pmd_set(MM, PMD, PTE)
  72 #define pmd_populate(MM, PMD, PTE)              pmd_set(MM, PMD, PTE)
  73 #define pmd_pgtable(PMD)                        ((pte_t *)__pmd_page(PMD))
  74
  75 #define check_pgt_cache()       do { } while (0)
  76
  77 void pgtable_free(void *table, bool is_page);
  78
  79 #ifdef CONFIG_SMP
  80
  81 struct mmu_gather;
  82 void tlb_remove_table(struct mmu_gather *, void *);
  83
  84 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
  85 {
  86         unsigned long pgf = (unsigned long)table;
  87         if (is_page)
  88                 pgf |= 0x1UL;
  89         tlb_remove_table(tlb, (void *)pgf);
  90 }
  91
  92 static inline void __tlb_remove_table(void *_table)
  93 {
  94         void *table = (void *)((unsigned long)_table & ~0x1UL);
  95         bool is_page = false;
  96
  97         if ((unsigned long)_table & 0x1UL)
  98                 is_page = true;
  99         pgtable_free(table, is_page);
 100 }
 101 #else /* CONFIG_SMP */
 102 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
 103 {
 104         pgtable_free(table, is_page);
 105 }
 106 #endif /* !CONFIG_SMP */
 107
 108 static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte,
 109                                   unsigned long address)
 110 {
 111         pgtable_free_tlb(tlb, pte, true);
 112 }
 113
 114 #define __pmd_free_tlb(tlb, pmd, addr)                \
 115         pgtable_free_tlb(tlb, pmd, false)
 116
 117 #define __pud_free_tlb(tlb, pud, addr)                \
 118         pgtable_free_tlb(tlb, pud, false)
 119
 120 #endif /* _SPARC64_PGALLOC_H */