xref: /linux/arch/sparc/include/asm/pgalloc_64.h (revision d39d0ed196aa1685bb24771e92f78633c66ac9cb)
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 #include <linux/quicklist.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 
17 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
18 {
19 	return quicklist_alloc(0, GFP_KERNEL, NULL);
20 }
21 
22 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
23 {
24 	quicklist_free(0, NULL, pgd);
25 }
26 
27 #define pud_populate(MM, PUD, PMD)	pud_set(PUD, PMD)
28 
29 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
30 {
31 	return quicklist_alloc(0, GFP_KERNEL, NULL);
32 }
33 
34 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
35 {
36 	quicklist_free(0, NULL, pmd);
37 }
38 
39 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
40 					  unsigned long address)
41 {
42 	return quicklist_alloc(0, GFP_KERNEL, NULL);
43 }
44 
45 static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
46 					unsigned long address)
47 {
48 	struct page *page;
49 	void *pg;
50 
51 	pg = quicklist_alloc(0, GFP_KERNEL, NULL);
52 	if (!pg)
53 		return NULL;
54 	page = virt_to_page(pg);
55 	pgtable_page_ctor(page);
56 	return page;
57 }
58 
59 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
60 {
61 	quicklist_free(0, NULL, pte);
62 }
63 
64 static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
65 {
66 	pgtable_page_dtor(ptepage);
67 	quicklist_free_page(0, NULL, ptepage);
68 }
69 
70 
71 #define pmd_populate_kernel(MM, PMD, PTE)	pmd_set(PMD, PTE)
72 #define pmd_populate(MM,PMD,PTE_PAGE)		\
73 	pmd_populate_kernel(MM,PMD,page_address(PTE_PAGE))
74 #define pmd_pgtable(pmd) pmd_page(pmd)
75 
76 static inline void check_pgt_cache(void)
77 {
78 	quicklist_trim(0, NULL, 25, 16);
79 }
80 
81 #endif /* _SPARC64_PGALLOC_H */
82