| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 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 | |
| 9 | extern 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 | |
| 18 | static inline pgd_t * |
| 19 | pgd_alloc(struct mm_struct *mm) |
| 20 | { |
| 21 | return kmem_cache_alloc(zero_cache, GFP_KERNEL); |
| 22 | } |
| 23 | |
| 24 | static inline void |
| 25 | pgd_free(pgd_t *pgd) |
| 26 | { |
| 27 | kmem_cache_free(zero_cache, pgd); |
| 28 | } |
| 29 | |
| 30 | #define pgd_populate(MM, PGD, PMD) pgd_set(PGD, PMD) |
| 31 | |
| 32 | static inline pmd_t * |
| 33 | pmd_alloc_one(struct mm_struct *mm, unsigned long addr) |
| 34 | { |
| 35 | return kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT); |
| 36 | } |
| 37 | |
| 38 | static inline void |
| 39 | pmd_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 | |
| 48 | static 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 | |
| 53 | static 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 | |
| 61 | static inline void pte_free_kernel(pte_t *pte) |
| 62 | { |
| 63 | kmem_cache_free(zero_cache, pte); |
| 64 | } |
| 65 | |
| 66 | static inline void pte_free(struct page *ptepage) |
| 67 | { |
| 68 | kmem_cache_free(zero_cache, page_address(ptepage)); |
| 69 | } |
| 70 | |
| 71 | struct 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 | |
| 81 | extern void pte_free_now(struct page *ptepage); |
| 82 | extern void pte_free_submit(struct pte_freelist_batch *batch); |
| 83 | |
| 84 | DECLARE_PER_CPU(struct pte_freelist_batch *, pte_freelist_cur); |
| 85 | |
| 86 | void __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 */ |