Linux kernel mirror (for testing)
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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 */