arch/cris/include/asm/pgalloc.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _CRIS_PGALLOC_H
   3 #define _CRIS_PGALLOC_H
   4
   5 #include <linux/threads.h>
   6 #include <linux/mm.h>
   7
   8 #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, pte)
   9 #define pmd_populate(mm, pmd, pte) pmd_set(pmd, page_address(pte))
  10 #define pmd_pgtable(pmd) pmd_page(pmd)
  11
  12 /*
  13  * Allocate and free page tables.
  14  */
  15
  16 static inline pgd_t *pgd_alloc (struct mm_struct *mm)
  17 {
  18         return (pgd_t *)get_zeroed_page(GFP_KERNEL);
  19 }
  20
  21 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  22 {
  23         free_page((unsigned long)pgd);
  24 }
  25
  26 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
  27 {
  28         pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
  29         return pte;
  30 }
  31
  32 static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
  33 {
  34         struct page *pte;
  35         pte = alloc_pages(GFP_KERNEL|__GFP_ZERO, 0);
  36         if (!pte)
  37                 return NULL;
  38         if (!pgtable_page_ctor(pte)) {
  39                 __free_page(pte);
  40                 return NULL;
  41         }
  42         return pte;
  43 }
  44
  45 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
  46 {
  47         free_page((unsigned long)pte);
  48 }
  49
  50 static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
  51 {
  52         pgtable_page_dtor(pte);
  53         __free_page(pte);
  54 }
  55
  56 #define __pte_free_tlb(tlb,pte,address)                 \
  57 do {                                                    \
  58         pgtable_page_dtor(pte);                         \
  59         tlb_remove_page((tlb), pte);                    \
  60 } while (0)
  61
  62 #define check_pgt_cache()          do { } while (0)
  63
  64 #endif