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1 /* memcontrol.h - Memory Controller |
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2 * |
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3 * Copyright IBM Corporation, 2007 |
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4 * Author Balbir Singh <balbir@linux.vnet.ibm.com> |
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5 * |
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6 * Copyright 2007 OpenVZ SWsoft Inc |
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7 * Author: Pavel Emelianov <xemul@openvz.org> |
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8 * |
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9 * This program is free software; you can redistribute it and/or modify |
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10 * it under the terms of the GNU General Public License as published by |
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11 * the Free Software Foundation; either version 2 of the License, or |
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12 * (at your option) any later version. |
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13 * |
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14 * This program is distributed in the hope that it will be useful, |
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15 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 * GNU General Public License for more details. |
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18 */ |
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19 |
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20 #ifndef _LINUX_MEMCONTROL_H |
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21 #define _LINUX_MEMCONTROL_H |
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22 |
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23 struct mem_cgroup; |
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24 struct page_cgroup; |
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25 struct page; |
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26 struct mm_struct; |
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27 |
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28 #ifdef CONFIG_CGROUP_MEM_RES_CTLR |
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29 |
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30 extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm, |
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31 gfp_t gfp_mask); |
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32 extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, |
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33 gfp_t gfp_mask); |
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34 extern void mem_cgroup_move_lists(struct page *page, enum lru_list lru); |
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35 extern void mem_cgroup_uncharge_page(struct page *page); |
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36 extern void mem_cgroup_uncharge_cache_page(struct page *page); |
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37 extern int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask); |
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38 |
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39 extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, |
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40 struct list_head *dst, |
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41 unsigned long *scanned, int order, |
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42 int mode, struct zone *z, |
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43 struct mem_cgroup *mem_cont, |
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44 int active, int file); |
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45 extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask); |
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46 int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem); |
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47 |
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48 extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p); |
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49 |
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50 #define mm_match_cgroup(mm, cgroup) \ |
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51 ((cgroup) == mem_cgroup_from_task((mm)->owner)) |
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52 |
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53 extern int |
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54 mem_cgroup_prepare_migration(struct page *page, struct page *newpage); |
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55 extern void mem_cgroup_end_migration(struct page *page); |
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56 |
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57 /* |
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58 * For memory reclaim. |
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59 */ |
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60 extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem); |
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61 extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem); |
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62 |
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63 extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem); |
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64 extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, |
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65 int priority); |
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66 extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, |
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67 int priority); |
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68 |
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69 extern long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, struct zone *zone, |
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70 int priority, enum lru_list lru); |
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71 |
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72 |
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73 #else /* CONFIG_CGROUP_MEM_RES_CTLR */ |
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74 static inline int mem_cgroup_charge(struct page *page, |
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75 struct mm_struct *mm, gfp_t gfp_mask) |
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76 { |
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77 return 0; |
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78 } |
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79 |
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80 static inline int mem_cgroup_cache_charge(struct page *page, |
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81 struct mm_struct *mm, gfp_t gfp_mask) |
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82 { |
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83 return 0; |
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84 } |
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85 |
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86 static inline void mem_cgroup_uncharge_page(struct page *page) |
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87 { |
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88 } |
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89 |
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90 static inline void mem_cgroup_uncharge_cache_page(struct page *page) |
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91 { |
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92 } |
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93 |
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94 static inline int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask) |
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95 { |
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96 return 0; |
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97 } |
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98 |
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99 static inline void mem_cgroup_move_lists(struct page *page, bool active) |
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100 { |
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101 } |
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102 |
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103 static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem) |
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104 { |
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105 return 1; |
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106 } |
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107 |
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108 static inline int task_in_mem_cgroup(struct task_struct *task, |
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109 const struct mem_cgroup *mem) |
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110 { |
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111 return 1; |
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112 } |
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113 |
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114 static inline int |
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115 mem_cgroup_prepare_migration(struct page *page, struct page *newpage) |
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116 { |
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117 return 0; |
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118 } |
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119 |
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120 static inline void mem_cgroup_end_migration(struct page *page) |
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121 { |
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122 } |
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123 |
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124 static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem) |
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125 { |
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126 return 0; |
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127 } |
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128 |
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129 static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem) |
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130 { |
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131 return 0; |
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132 } |
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133 |
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134 static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem) |
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135 { |
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136 return 0; |
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137 } |
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138 |
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139 static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, |
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140 int priority) |
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141 { |
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142 } |
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143 |
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144 static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, |
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145 int priority) |
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146 { |
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147 } |
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148 |
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149 static inline long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, |
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150 struct zone *zone, int priority, |
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151 enum lru_list lru) |
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152 { |
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153 return 0; |
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154 } |
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155 #endif /* CONFIG_CGROUP_MEM_CONT */ |
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156 |
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157 #endif /* _LINUX_MEMCONTROL_H */ |
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158 |