LXR linux/arch/sparc/include/asm/pgalloc

   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
  16extern struct kmem_cache *pgtable_cache;
  17
  18static 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
  25static inline pgd_t *pgd_alloc(struct mm_struct *mm)
  26{
  27        return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
  28}
  29
  30static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  31{
  32        kmem_cache_free(pgtable_cache, pgd);
  33}
  34
  35static 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
  42static 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
  48static inline void pud_free(struct mm_struct *mm, pud_t *pud)
  49{
  50        kmem_cache_free(pgtable_cache, pud);
  51}
  52
  53static 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
  59static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
  60{
  61        kmem_cache_free(pgtable_cache, pmd);
  62}
  63
  64pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
  65                            unsigned long address);
  66pgtable_t pte_alloc_one(struct mm_struct *mm,
  67                        unsigned long address);
  68void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
  69void 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
  77void pgtable_free(void *table, bool is_page);
  78
  79#ifdef CONFIG_SMP
  80
  81struct mmu_gather;
  82void tlb_remove_table(struct mmu_gather *, void *);
  83
  84static 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
  92static 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 */
 102static 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
 108static 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 */
 121