Linux kernel mirror (for testing)
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linux
1#ifndef _SPARC64_PGALLOC_H
2#define _SPARC64_PGALLOC_H
3
4#include <linux/kernel.h>
5#include <linux/sched.h>
6#include <linux/mm.h>
7#include <linux/slab.h>
8
9#include <asm/spitfire.h>
10#include <asm/cpudata.h>
11#include <asm/cacheflush.h>
12#include <asm/page.h>
13
14/* Page table allocation/freeing. */
15
16extern struct kmem_cache *pgtable_cache;
17
18static inline void __pgd_populate(pgd_t *pgd, pud_t *pud)
19{
20 pgd_set(pgd, pud);
21}
22
23#define pgd_populate(MM, PGD, PUD) __pgd_populate(PGD, PUD)
24
25static inline pgd_t *pgd_alloc(struct mm_struct *mm)
26{
27 return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
28}
29
30static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
31{
32 kmem_cache_free(pgtable_cache, pgd);
33}
34
35static inline void __pud_populate(pud_t *pud, pmd_t *pmd)
36{
37 pud_set(pud, pmd);
38}
39
40#define pud_populate(MM, PUD, PMD) __pud_populate(PUD, PMD)
41
42static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
43{
44 return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
45}
46
47static inline void pud_free(struct mm_struct *mm, pud_t *pud)
48{
49 kmem_cache_free(pgtable_cache, pud);
50}
51
52static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
53{
54 return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
55}
56
57static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
58{
59 kmem_cache_free(pgtable_cache, pmd);
60}
61
62pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
63 unsigned long address);
64pgtable_t pte_alloc_one(struct mm_struct *mm,
65 unsigned long address);
66void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
67void pte_free(struct mm_struct *mm, pgtable_t ptepage);
68
69#define pmd_populate_kernel(MM, PMD, PTE) pmd_set(MM, PMD, PTE)
70#define pmd_populate(MM, PMD, PTE) pmd_set(MM, PMD, PTE)
71#define pmd_pgtable(PMD) ((pte_t *)__pmd_page(PMD))
72
73#define check_pgt_cache() do { } while (0)
74
75void pgtable_free(void *table, bool is_page);
76
77#ifdef CONFIG_SMP
78
79struct mmu_gather;
80void tlb_remove_table(struct mmu_gather *, void *);
81
82static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
83{
84 unsigned long pgf = (unsigned long)table;
85 if (is_page)
86 pgf |= 0x1UL;
87 tlb_remove_table(tlb, (void *)pgf);
88}
89
90static inline void __tlb_remove_table(void *_table)
91{
92 void *table = (void *)((unsigned long)_table & ~0x1UL);
93 bool is_page = false;
94
95 if ((unsigned long)_table & 0x1UL)
96 is_page = true;
97 pgtable_free(table, is_page);
98}
99#else /* CONFIG_SMP */
100static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
101{
102 pgtable_free(table, is_page);
103}
104#endif /* !CONFIG_SMP */
105
106static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte,
107 unsigned long address)
108{
109 pgtable_free_tlb(tlb, pte, true);
110}
111
112#define __pmd_free_tlb(tlb, pmd, addr) \
113 pgtable_free_tlb(tlb, pmd, false)
114
115#define __pud_free_tlb(tlb, pud, addr) \
116 pgtable_free_tlb(tlb, pud, false)
117
118#endif /* _SPARC64_PGALLOC_H */