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 pgd_t *pgd_alloc(struct mm_struct *mm)
  19{
  20        return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
  21}
  22
  23static 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
  30static 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
  36static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
  37{
  38        kmem_cache_free(pgtable_cache, pmd);
  39}
  40
  41pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
  42                            unsigned long address);
  43pgtable_t pte_alloc_one(struct mm_struct *mm,
  44                        unsigned long address);
  45void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
  46void 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
  54void pgtable_free(void *table, bool is_page);
  55
  56#ifdef CONFIG_SMP
  57
  58struct mmu_gather;
  59void tlb_remove_table(struct mmu_gather *, void *);
  60
  61static 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
  69static 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 */
  79static 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
  85static 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 */
  95