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 __pgd_populate(pgd_t *pgd, pud_t *pud)
  20{
  21        pgd_set(pgd, pud);
  22}
  23
  24#define pgd_populate(MM, PGD, PUD)      __pgd_populate(PGD, 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,
  64                            unsigned long address);
  65pgtable_t pte_alloc_one(struct mm_struct *mm,
  66                        unsigned long address);
  67void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
  68void pte_free(struct mm_struct *mm, pgtable_t ptepage);
  69
  70#define pmd_populate_kernel(MM, PMD, PTE)       pmd_set(MM, PMD, PTE)
  71#define pmd_populate(MM, PMD, PTE)              pmd_set(MM, PMD, PTE)
  72#define pmd_pgtable(PMD)                        ((pte_t *)__pmd_page(PMD))
  73
  74#define check_pgt_cache()       do { } while (0)
  75
  76void pgtable_free(void *table, bool is_page);
  77
  78#ifdef CONFIG_SMP
  79
  80struct mmu_gather;
  81void tlb_remove_table(struct mmu_gather *, void *);
  82
  83static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
  84{
  85        unsigned long pgf = (unsigned long)table;
  86        if (is_page)
  87                pgf |= 0x1UL;
  88        tlb_remove_table(tlb, (void *)pgf);
  89}
  90
  91static inline void __tlb_remove_table(void *_table)
  92{
  93        void *table = (void *)((unsigned long)_table & ~0x1UL);
  94        bool is_page = false;
  95
  96        if ((unsigned long)_table & 0x1UL)
  97                is_page = true;
  98        pgtable_free(table, is_page);
  99}
 100#else /* CONFIG_SMP */
 101static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
 102{
 103        pgtable_free(table, is_page);
 104}
 105#endif /* !CONFIG_SMP */
 106
 107static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte,
 108                                  unsigned long address)
 109{
 110        pgtable_free_tlb(tlb, pte, true);
 111}
 112
 113#define __pmd_free_tlb(tlb, pmd, addr)                \
 114        pgtable_free_tlb(tlb, pmd, false)
 115
 116#define __pud_free_tlb(tlb, pud, addr)                \
 117        pgtable_free_tlb(tlb, pud, false)
 118
 119#endif /* _SPARC64_PGALLOC_H */
 120