Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _ASM_IA64_PGALLOC_H |
| 2 | #define _ASM_IA64_PGALLOC_H |
| 3 | |
| 4 | /* |
| 5 | * This file contains the functions and defines necessary to allocate |
| 6 | * page tables. |
| 7 | * |
| 8 | * This hopefully works with any (fixed) ia-64 page-size, as defined |
| 9 | * in <asm/page.h> (currently 8192). |
| 10 | * |
| 11 | * Copyright (C) 1998-2001 Hewlett-Packard Co |
| 12 | * David Mosberger-Tang <davidm@hpl.hp.com> |
| 13 | * Copyright (C) 2000, Goutham Rao <goutham.rao@intel.com> |
| 14 | */ |
| 15 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | |
| 17 | #include <linux/compiler.h> |
| 18 | #include <linux/mm.h> |
| 19 | #include <linux/page-flags.h> |
| 20 | #include <linux/threads.h> |
Christoph Lameter | 2bd62a4 | 2007-05-10 22:42:53 -0700 | [diff] [blame] | 21 | #include <linux/quicklist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | |
| 23 | #include <asm/mmu_context.h> |
| 24 | |
Robin Holt | fde740e | 2005-04-25 13:13:16 -0700 | [diff] [blame] | 25 | static inline pgd_t *pgd_alloc(struct mm_struct *mm) |
| 26 | { |
Christoph Lameter | 2bd62a4 | 2007-05-10 22:42:53 -0700 | [diff] [blame] | 27 | return quicklist_alloc(0, GFP_KERNEL, NULL); |
Robin Holt | fde740e | 2005-04-25 13:13:16 -0700 | [diff] [blame] | 28 | } |
| 29 | |
Benjamin Herrenschmidt | 5e54197 | 2008-02-04 22:29:14 -0800 | [diff] [blame] | 30 | static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) |
Robin Holt | fde740e | 2005-04-25 13:13:16 -0700 | [diff] [blame] | 31 | { |
Christoph Lameter | 2bd62a4 | 2007-05-10 22:42:53 -0700 | [diff] [blame] | 32 | quicklist_free(0, NULL, pgd); |
Robin Holt | fde740e | 2005-04-25 13:13:16 -0700 | [diff] [blame] | 33 | } |
| 34 | |
Robin Holt | 837cd0b | 2005-11-11 09:35:43 -0600 | [diff] [blame] | 35 | #ifdef CONFIG_PGTABLE_4 |
| 36 | static inline void |
| 37 | pgd_populate(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud) |
| 38 | { |
| 39 | pgd_val(*pgd_entry) = __pa(pud); |
| 40 | } |
| 41 | |
| 42 | static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) |
| 43 | { |
Christoph Lameter | 2bd62a4 | 2007-05-10 22:42:53 -0700 | [diff] [blame] | 44 | return quicklist_alloc(0, GFP_KERNEL, NULL); |
Robin Holt | 837cd0b | 2005-11-11 09:35:43 -0600 | [diff] [blame] | 45 | } |
| 46 | |
Benjamin Herrenschmidt | 5e54197 | 2008-02-04 22:29:14 -0800 | [diff] [blame] | 47 | static inline void pud_free(struct mm_struct *mm, pud_t *pud) |
Robin Holt | 837cd0b | 2005-11-11 09:35:43 -0600 | [diff] [blame] | 48 | { |
Christoph Lameter | 2bd62a4 | 2007-05-10 22:42:53 -0700 | [diff] [blame] | 49 | quicklist_free(0, NULL, pud); |
Robin Holt | 837cd0b | 2005-11-11 09:35:43 -0600 | [diff] [blame] | 50 | } |
Benjamin Herrenschmidt | 5e54197 | 2008-02-04 22:29:14 -0800 | [diff] [blame] | 51 | #define __pud_free_tlb(tlb, pud) pud_free((tlb)->mm, pud) |
Robin Holt | 837cd0b | 2005-11-11 09:35:43 -0600 | [diff] [blame] | 52 | #endif /* CONFIG_PGTABLE_4 */ |
| 53 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | static inline void |
Robin Holt | fde740e | 2005-04-25 13:13:16 -0700 | [diff] [blame] | 55 | pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | { |
| 57 | pud_val(*pud_entry) = __pa(pmd); |
| 58 | } |
| 59 | |
Robin Holt | fde740e | 2005-04-25 13:13:16 -0700 | [diff] [blame] | 60 | static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | { |
Christoph Lameter | 2bd62a4 | 2007-05-10 22:42:53 -0700 | [diff] [blame] | 62 | return quicklist_alloc(0, GFP_KERNEL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | } |
| 64 | |
Benjamin Herrenschmidt | 5e54197 | 2008-02-04 22:29:14 -0800 | [diff] [blame] | 65 | static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | { |
Christoph Lameter | 2bd62a4 | 2007-05-10 22:42:53 -0700 | [diff] [blame] | 67 | quicklist_free(0, NULL, pmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | } |
| 69 | |
Benjamin Herrenschmidt | 5e54197 | 2008-02-04 22:29:14 -0800 | [diff] [blame] | 70 | #define __pmd_free_tlb(tlb, pmd) pmd_free((tlb)->mm, pmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
| 72 | static inline void |
Robin Holt | fde740e | 2005-04-25 13:13:16 -0700 | [diff] [blame] | 73 | pmd_populate(struct mm_struct *mm, pmd_t * pmd_entry, struct page *pte) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | { |
| 75 | pmd_val(*pmd_entry) = page_to_phys(pte); |
| 76 | } |
| 77 | |
| 78 | static inline void |
Robin Holt | fde740e | 2005-04-25 13:13:16 -0700 | [diff] [blame] | 79 | pmd_populate_kernel(struct mm_struct *mm, pmd_t * pmd_entry, pte_t * pte) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | { |
| 81 | pmd_val(*pmd_entry) = __pa(pte); |
| 82 | } |
| 83 | |
Robin Holt | fde740e | 2005-04-25 13:13:16 -0700 | [diff] [blame] | 84 | static inline struct page *pte_alloc_one(struct mm_struct *mm, |
| 85 | unsigned long addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | { |
Christoph Lameter | 2bd62a4 | 2007-05-10 22:42:53 -0700 | [diff] [blame] | 87 | void *pg = quicklist_alloc(0, GFP_KERNEL, NULL); |
Kirill Korotaev | 7112006 | 2007-02-05 16:20:00 -0800 | [diff] [blame] | 88 | return pg ? virt_to_page(pg) : NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | } |
| 90 | |
Robin Holt | fde740e | 2005-04-25 13:13:16 -0700 | [diff] [blame] | 91 | static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, |
| 92 | unsigned long addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | { |
Christoph Lameter | 2bd62a4 | 2007-05-10 22:42:53 -0700 | [diff] [blame] | 94 | return quicklist_alloc(0, GFP_KERNEL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | } |
| 96 | |
Benjamin Herrenschmidt | 5e54197 | 2008-02-04 22:29:14 -0800 | [diff] [blame] | 97 | static inline void pte_free(struct mm_struct *mm, struct page *pte) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | { |
Christoph Lameter | 2bd62a4 | 2007-05-10 22:42:53 -0700 | [diff] [blame] | 99 | quicklist_free_page(0, NULL, pte); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | } |
| 101 | |
Benjamin Herrenschmidt | 5e54197 | 2008-02-04 22:29:14 -0800 | [diff] [blame] | 102 | static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | { |
Christoph Lameter | 2bd62a4 | 2007-05-10 22:42:53 -0700 | [diff] [blame] | 104 | quicklist_free(0, NULL, pte); |
| 105 | } |
| 106 | |
| 107 | static inline void check_pgt_cache(void) |
| 108 | { |
| 109 | quicklist_trim(0, NULL, 25, 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | } |
| 111 | |
Benjamin Herrenschmidt | 5e54197 | 2008-02-04 22:29:14 -0800 | [diff] [blame] | 112 | #define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, pte) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
Robin Holt | fde740e | 2005-04-25 13:13:16 -0700 | [diff] [blame] | 114 | #endif /* _ASM_IA64_PGALLOC_H */ |