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/arch/sparc/include/asm/pgalloc_64.h

https://bitbucket.org/ndreys/linux-sunxi
C++ Header | 84 lines | 65 code | 18 blank | 1 comment | 1 complexity | eb6e6f98023976f7a711f6dc39c21696 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 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
17static inline pgd_t *pgd_alloc(struct mm_struct *mm)
18{
19	return quicklist_alloc(0, GFP_KERNEL, NULL);
20}
21
22static 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
29static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
30{
31	return quicklist_alloc(0, GFP_KERNEL, NULL);
32}
33
34static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
35{
36	quicklist_free(0, NULL, pmd);
37}
38
39static 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
45static 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
59static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
60{
61	quicklist_free(0, NULL, pte);
62}
63
64static 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
76static inline void check_pgt_cache(void)
77{
78	quicklist_trim(0, NULL, 25, 16);
79}
80
81#define __pte_free_tlb(tlb, pte, addr)	pte_free((tlb)->mm, pte)
82#define __pmd_free_tlb(tlb, pmd, addr)	pmd_free((tlb)->mm, pmd)
83
84#endif /* _SPARC64_PGALLOC_H */