Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
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 pgd_t *pgd_alloc(struct mm_struct *mm)
19{
20 return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
21}
22
23static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
24{
25 kmem_cache_free(pgtable_cache, pgd);
26}
27
28#define pud_populate(MM, PUD, PMD) pud_set(PUD, PMD)
29
30static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
31{
32 return kmem_cache_alloc(pgtable_cache,
33 GFP_KERNEL|__GFP_REPEAT);
34}
35
36static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
37{
38 kmem_cache_free(pgtable_cache, pmd);
39}
40
41extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
42 unsigned long address);
43extern pgtable_t pte_alloc_one(struct mm_struct *mm,
44 unsigned long address);
45extern void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
46extern void pte_free(struct mm_struct *mm, pgtable_t ptepage);
47
48#define pmd_populate_kernel(MM, PMD, PTE) pmd_set(MM, PMD, PTE)
49#define pmd_populate(MM, PMD, PTE) pmd_set(MM, PMD, PTE)
50#define pmd_pgtable(PMD) ((pte_t *)__pmd_page(PMD))
51
52#define check_pgt_cache() do { } while (0)
53
54extern void pgtable_free(void *table, bool is_page);
55
56#ifdef CONFIG_SMP
57
58struct mmu_gather;
59extern void tlb_remove_table(struct mmu_gather *, void *);
60
61static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
62{
63 unsigned long pgf = (unsigned long)table;
64 if (is_page)
65 pgf |= 0x1UL;
66 tlb_remove_table(tlb, (void *)pgf);
67}
68
69static inline void __tlb_remove_table(void *_table)
70{
71 void *table = (void *)((unsigned long)_table & ~0x1UL);
72 bool is_page = false;
73
74 if ((unsigned long)_table & 0x1UL)
75 is_page = true;
76 pgtable_free(table, is_page);
77}
78#else /* CONFIG_SMP */
79static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
80{
81 pgtable_free(table, is_page);
82}
83#endif /* !CONFIG_SMP */
84
85static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte,
86 unsigned long address)
87{
88 pgtable_free_tlb(tlb, pte, true);
89}
90
91#define __pmd_free_tlb(tlb, pmd, addr) \
92 pgtable_free_tlb(tlb, pmd, false)
93
94#endif /* _SPARC64_PGALLOC_H */