1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_IA64_PGALLOC_H
3 #define _ASM_IA64_PGALLOC_H
6 * This file contains the functions and defines necessary to allocate
9 * This hopefully works with any (fixed) ia-64 page-size, as defined
10 * in <asm/page.h> (currently 8192).
12 * Copyright (C) 1998-2001 Hewlett-Packard Co
18 #include <linux/compiler.h>
20 #include <linux/page-flags.h>
21 #include <linux/threads.h>
22 #include <linux/quicklist.h>
24 #include <asm/mmu_context.h>
26 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
28 return quicklist_alloc(0, GFP_KERNEL, NULL);
31 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
33 quicklist_free(0, NULL, pgd);
36 #if CONFIG_PGTABLE_LEVELS == 4
38 pgd_populate(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud)
40 pgd_val(*pgd_entry) = __pa(pud);
43 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
45 return quicklist_alloc(0, GFP_KERNEL, NULL);
48 static inline void pud_free(struct mm_struct *mm, pud_t *pud)
50 quicklist_free(0, NULL, pud);
52 #define __pud_free_tlb(tlb, pud, address) pud_free((tlb)->mm, pud)
53 #endif /* CONFIG_PGTABLE_LEVELS == 4 */
56 pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd)
58 pud_val(*pud_entry) = __pa(pmd);
61 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
63 return quicklist_alloc(0, GFP_KERNEL, NULL);
66 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
68 quicklist_free(0, NULL, pmd);
71 #define __pmd_free_tlb(tlb, pmd, address) pmd_free((tlb)->mm, pmd)
74 pmd_populate(struct mm_struct *mm, pmd_t * pmd_entry, pgtable_t pte)
76 pmd_val(*pmd_entry) = page_to_phys(pte);
78 #define pmd_pgtable(pmd) pmd_page(pmd)
81 pmd_populate_kernel(struct mm_struct *mm, pmd_t * pmd_entry, pte_t * pte)
83 pmd_val(*pmd_entry) = __pa(pte);
86 static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
91 pg = quicklist_alloc(0, GFP_KERNEL, NULL);
94 page = virt_to_page(pg);
95 if (!pgtable_page_ctor(page)) {
96 quicklist_free(0, NULL, pg);
102 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
104 return quicklist_alloc(0, GFP_KERNEL, NULL);
107 static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
109 pgtable_page_dtor(pte);
110 quicklist_free_page(0, NULL, pte);
113 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
115 quicklist_free(0, NULL, pte);
118 static inline void check_pgt_cache(void)
120 quicklist_trim(0, NULL, 25, 16);
123 #define __pte_free_tlb(tlb, pte, address) pte_free((tlb)->mm, pte)
125 #endif /* _ASM_IA64_PGALLOC_H */