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

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _SPARC64_PGALLOC_H
   3#define _SPARC64_PGALLOC_H
   4
   5#include <linux/kernel.h>
   6#include <linux/sched.h>
   7#include <linux/mm.h>
   8#include <linux/slab.h>
   9
  10#include <asm/spitfire.h>
  11#include <asm/cpudata.h>
  12#include <asm/cacheflush.h>
  13#include <asm/page.h>
  14
  15/* Page table allocation/freeing. */
  16
  17extern struct kmem_cache *pgtable_cache;
  18
  19static inline void __p4d_populate(p4d_t *p4d, pud_t *pud)
  20{
  21        p4d_set(p4d, pud);
  22}
  23
  24#define p4d_populate(MM, P4D, PUD)      __p4d_populate(P4D, PUD)
  25
  26static inline pgd_t *pgd_alloc(struct mm_struct *mm)
  27{
  28        return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
  29}
  30
  31static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  32{
  33        kmem_cache_free(pgtable_cache, pgd);
  34}
  35
  36static inline void __pud_populate(pud_t *pud, pmd_t *pmd)
  37{
  38        pud_set(pud, pmd);
  39}
  40
  41#define pud_populate(MM, PUD, PMD)      __pud_populate(PUD, PMD)
  42
  43static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
  44{
  45        return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
  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, GFP_KERNEL);
  56}
  57
  58static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
  59{
  60        kmem_cache_free(pgtable_cache, pmd);
  61}
  62
  63pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
  64pgtable_t pte_alloc_one(struct mm_struct *mm);
  65void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
  66void pte_free(struct mm_struct *mm, pgtable_t ptepage);
  67
  68#define pmd_populate_kernel(MM, PMD, PTE)       pmd_set(MM, PMD, PTE)
  69#define pmd_populate(MM, PMD, PTE)              pmd_set(MM, PMD, PTE)
  70
  71void pgtable_free(void *table, bool is_page);
  72
  73#ifdef CONFIG_SMP
  74
  75struct mmu_gather;
  76void tlb_remove_table(struct mmu_gather *, void *);
  77
  78static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
  79{
  80        unsigned long pgf = (unsigned long)table;
  81        if (is_page)
  82                pgf |= 0x1UL;
  83        tlb_remove_table(tlb, (void *)pgf);
  84}
  85
  86static inline void __tlb_remove_table(void *_table)
  87{
  88        void *table = (void *)((unsigned long)_table & ~0x1UL);
  89        bool is_page = false;
  90
  91        if ((unsigned long)_table & 0x1UL)
  92                is_page = true;
  93        pgtable_free(table, is_page);
  94}
  95#else /* CONFIG_SMP */
  96static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
  97{
  98        pgtable_free(table, is_page);
  99}
 100#endif /* !CONFIG_SMP */
 101
 102static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte,
 103                                  unsigned long address)
 104{
 105        pgtable_free_tlb(tlb, pte, true);
 106}
 107
 108#define __pmd_free_tlb(tlb, pmd, addr)                \
 109        pgtable_free_tlb(tlb, pmd, false)
 110
 111#define __pud_free_tlb(tlb, pud, addr)                \
 112        pgtable_free_tlb(tlb, pud, false)
 113
 114#endif /* _SPARC64_PGALLOC_H */
 115