1
#ifndef _SPARC64_PGALLOC_H
2
#define _SPARC64_PGALLOC_H
4
#include <linux/kernel.h>
5
#include <linux/sched.h>
7
#include <linux/slab.h>
9
#include <asm/spitfire.h>
10
#include <asm/cpudata.h>
11
#include <asm/cacheflush.h>
14
/* Page table allocation/freeing. */
16
extern struct kmem_cache *pgtable_cache;
18
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
20
return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
23
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
25
kmem_cache_free(pgtable_cache, pgd);
28
#define pud_populate(MM, PUD, PMD) pud_set(PUD, PMD)
30
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
32
return kmem_cache_alloc(pgtable_cache,
33
GFP_KERNEL|__GFP_REPEAT);
36
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
38
kmem_cache_free(pgtable_cache, pmd);
41
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
42
unsigned long address)
44
return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
47
static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
48
unsigned long address)
53
pte = pte_alloc_one_kernel(mm, address);
56
page = virt_to_page(pte);
57
pgtable_page_ctor(page);
61
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
63
free_page((unsigned long)pte);
66
static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
68
pgtable_page_dtor(ptepage);
72
#define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE)
73
#define pmd_populate(MM,PMD,PTE_PAGE) \
74
pmd_populate_kernel(MM,PMD,page_address(PTE_PAGE))
75
#define pmd_pgtable(pmd) pmd_page(pmd)
77
#define check_pgt_cache() do { } while (0)
79
static inline void pgtable_free(void *table, bool is_page)
82
free_page((unsigned long)table);
84
kmem_cache_free(pgtable_cache, table);
90
extern void tlb_remove_table(struct mmu_gather *, void *);
92
static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
94
unsigned long pgf = (unsigned long)table;
97
tlb_remove_table(tlb, (void *)pgf);
100
static inline void __tlb_remove_table(void *_table)
102
void *table = (void *)((unsigned long)_table & ~0x1UL);
103
bool is_page = false;
105
if ((unsigned long)_table & 0x1UL)
107
pgtable_free(table, is_page);
109
#else /* CONFIG_SMP */
110
static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
112
pgtable_free(table, is_page);
114
#endif /* !CONFIG_SMP */
116
static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *ptepage,
117
unsigned long address)
119
pgtable_page_dtor(ptepage);
120
pgtable_free_tlb(tlb, page_address(ptepage), true);
123
#define __pmd_free_tlb(tlb, pmd, addr) \
124
pgtable_free_tlb(tlb, pmd, false)
126
#endif /* _SPARC64_PGALLOC_H */