Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1#ifndef _PPC64_PGALLOC_H
2#define _PPC64_PGALLOC_H
3
4#include <linux/mm.h>
5#include <linux/slab.h>
6#include <linux/cpumask.h>
7#include <linux/percpu.h>
8
9extern kmem_cache_t *zero_cache;
10
11/*
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version
15 * 2 of the License, or (at your option) any later version.
16 */
17
18static inline pgd_t *
19pgd_alloc(struct mm_struct *mm)
20{
21 return kmem_cache_alloc(zero_cache, GFP_KERNEL);
22}
23
24static inline void
25pgd_free(pgd_t *pgd)
26{
27 kmem_cache_free(zero_cache, pgd);
28}
29
30#define pud_populate(MM, PUD, PMD) pud_set(PUD, PMD)
31
32static inline pmd_t *
33pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
34{
35 return kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);
36}
37
38static inline void
39pmd_free(pmd_t *pmd)
40{
41 kmem_cache_free(zero_cache, pmd);
42}
43
44#define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, pte)
45#define pmd_populate(mm, pmd, pte_page) \
46 pmd_populate_kernel(mm, pmd, page_address(pte_page))
47
48static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
49{
50 return kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);
51}
52
53static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
54{
55 pte_t *pte = kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);
56 if (pte)
57 return virt_to_page(pte);
58 return NULL;
59}
60
61static inline void pte_free_kernel(pte_t *pte)
62{
63 kmem_cache_free(zero_cache, pte);
64}
65
66static inline void pte_free(struct page *ptepage)
67{
68 kmem_cache_free(zero_cache, page_address(ptepage));
69}
70
71struct pte_freelist_batch
72{
73 struct rcu_head rcu;
74 unsigned int index;
75 struct page * pages[0];
76};
77
78#define PTE_FREELIST_SIZE ((PAGE_SIZE - sizeof(struct pte_freelist_batch)) / \
79 sizeof(struct page *))
80
81extern void pte_free_now(struct page *ptepage);
82extern void pte_free_submit(struct pte_freelist_batch *batch);
83
84DECLARE_PER_CPU(struct pte_freelist_batch *, pte_freelist_cur);
85
86void __pte_free_tlb(struct mmu_gather *tlb, struct page *ptepage);
87#define __pmd_free_tlb(tlb, pmd) __pte_free_tlb(tlb, virt_to_page(pmd))
88
89#define check_pgt_cache() do { } while (0)
90
91#endif /* _PPC64_PGALLOC_H */