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 pgd_t *pgd_alloc(struct mm_struct *mm)
  19 {
  20         return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
  21 }
  22
  23 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  24 {
  25         kmem_cache_free(pgtable_cache, pgd);
  26 }
  27
  28 #define pud_populate(MM, PUD, PMD)      pud_set(PUD, PMD)
  29
  30 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
  31 {
  32         return kmem_cache_alloc(pgtable_cache,
  33                                 GFP_KERNEL|__GFP_REPEAT);
  34 }
  35
  36 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
  37 {
  38         kmem_cache_free(pgtable_cache, pmd);
  39 }
  40
  41 extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
  42                                    unsigned long address);
  43 extern pgtable_t pte_alloc_one(struct mm_struct *mm,
  44                                unsigned long address);
  45 extern void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
  46 extern void pte_free(struct mm_struct *mm, pgtable_t ptepage);
  47
  48 #define pmd_populate_kernel(MM, PMD, PTE)       pmd_set(MM, PMD, PTE)
  49 #define pmd_populate(MM, PMD, PTE)              pmd_set(MM, PMD, PTE)
  50 #define pmd_pgtable(PMD)                        ((pte_t *)__pmd_page(PMD))
  51
  52 #define check_pgt_cache()       do { } while (0)
  53
  54 extern void pgtable_free(void *table, bool is_page);
  55
  56 #ifdef CONFIG_SMP
  57
  58 struct mmu_gather;
  59 extern void tlb_remove_table(struct mmu_gather *, void *);
  60
  61 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
  62 {
  63         unsigned long pgf = (unsigned long)table;
  64         if (is_page)
  65                 pgf |= 0x1UL;
  66         tlb_remove_table(tlb, (void *)pgf);
  67 }
  68
  69 static inline void __tlb_remove_table(void *_table)
  70 {
  71         void *table = (void *)((unsigned long)_table & ~0x1UL);
  72         bool is_page = false;
  73
  74         if ((unsigned long)_table & 0x1UL)
  75                 is_page = true;
  76         pgtable_free(table, is_page);
  77 }
  78 #else /* CONFIG_SMP */
  79 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
  80 {
  81         pgtable_free(table, is_page);
  82 }
  83 #endif /* !CONFIG_SMP */
  84
  85 static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte,
  86                                   unsigned long address)
  87 {
  88         pgtable_free_tlb(tlb, pte, true);
  89 }
  90
  91 #define __pmd_free_tlb(tlb, pmd, addr)                \
  92         pgtable_free_tlb(tlb, pmd, false)
  93
  94 #endif /* _SPARC64_PGALLOC_H */