root/arch/ia64/include/asm/pgalloc.h

INCLUDED FROM

DEFINITIONS

1. pgd_alloc
2. pgd_free
3. pgd_populate
4. pud_alloc_one
5. pud_free
6. pud_populate
7. pmd_alloc_one
8. pmd_free
9. pmd_populate
10. pmd_populate_kernel

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_IA64_PGALLOC_H
   3 #define _ASM_IA64_PGALLOC_H
   4 
   5 /*
   6  * This file contains the functions and defines necessary to allocate
   7  * page tables.
   8  *
   9  * This hopefully works with any (fixed) ia-64 page-size, as defined
  10  * in <asm/page.h> (currently 8192).
  11  *
  12  * Copyright (C) 1998-2001 Hewlett-Packard Co
  13  *      David Mosberger-Tang <davidm@hpl.hp.com>
  14  * Copyright (C) 2000, Goutham Rao <goutham.rao@intel.com>
  15  */
  16 
  17 
  18 #include <linux/compiler.h>
  19 #include <linux/mm.h>
  20 #include <linux/page-flags.h>
  21 #include <linux/threads.h>
  22 
  23 #include <asm-generic/pgalloc.h>
  24 
  25 #include <asm/mmu_context.h>
  26 
  27 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
  28 {
  29         return (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
  30 }
  31 
  32 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  33 {
  34         free_page((unsigned long)pgd);
  35 }
  36 
  37 #if CONFIG_PGTABLE_LEVELS == 4
  38 static inline void
  39 pgd_populate(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud)
  40 {
  41         pgd_val(*pgd_entry) = __pa(pud);
  42 }
  43 
  44 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
  45 {
  46         return (pud_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
  47 }
  48 
  49 static inline void pud_free(struct mm_struct *mm, pud_t *pud)
  50 {
  51         free_page((unsigned long)pud);
  52 }
  53 #define __pud_free_tlb(tlb, pud, address)       pud_free((tlb)->mm, pud)
  54 #endif /* CONFIG_PGTABLE_LEVELS == 4 */
  55 
  56 static inline void
  57 pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd)
  58 {
  59         pud_val(*pud_entry) = __pa(pmd);
  60 }
  61 
  62 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
  63 {
  64         return (pmd_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
  65 }
  66 
  67 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
  68 {
  69         free_page((unsigned long)pmd);
  70 }
  71 
  72 #define __pmd_free_tlb(tlb, pmd, address)       pmd_free((tlb)->mm, pmd)
  73 
  74 static inline void
  75 pmd_populate(struct mm_struct *mm, pmd_t * pmd_entry, pgtable_t pte)
  76 {
  77         pmd_val(*pmd_entry) = page_to_phys(pte);
  78 }
  79 #define pmd_pgtable(pmd) pmd_page(pmd)
  80 
  81 static inline void
  82 pmd_populate_kernel(struct mm_struct *mm, pmd_t * pmd_entry, pte_t * pte)
  83 {
  84         pmd_val(*pmd_entry) = __pa(pte);
  85 }
  86 
  87 #define __pte_free_tlb(tlb, pte, address)       pte_free((tlb)->mm, pte)
  88 
  89 #endif                          /* _ASM_IA64_PGALLOC_H */