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1da177e4 LT |
1 | #ifndef _LINUX_CPUSET_H |
2 | #define _LINUX_CPUSET_H | |
3 | /* | |
4 | * cpuset interface | |
5 | * | |
6 | * Copyright (C) 2003 BULL SA | |
825a46af | 7 | * Copyright (C) 2004-2006 Silicon Graphics, Inc. |
1da177e4 LT |
8 | * |
9 | */ | |
10 | ||
11 | #include <linux/sched.h> | |
12 | #include <linux/cpumask.h> | |
13 | #include <linux/nodemask.h> | |
8793d854 | 14 | #include <linux/cgroup.h> |
a1bc5a4e | 15 | #include <linux/mm.h> |
1da177e4 LT |
16 | |
17 | #ifdef CONFIG_CPUSETS | |
18 | ||
202f72d5 PJ |
19 | extern int number_of_cpusets; /* How many cpusets are defined in system? */ |
20 | ||
c417f024 | 21 | extern int cpuset_init_early(void); |
1da177e4 LT |
22 | extern int cpuset_init(void); |
23 | extern void cpuset_init_smp(void); | |
6af866af LZ |
24 | extern void cpuset_cpus_allowed(struct task_struct *p, struct cpumask *mask); |
25 | extern void cpuset_cpus_allowed_locked(struct task_struct *p, | |
26 | struct cpumask *mask); | |
909d75a3 | 27 | extern nodemask_t cpuset_mems_allowed(struct task_struct *p); |
9276b1bc | 28 | #define cpuset_current_mems_allowed (current->mems_allowed) |
1da177e4 | 29 | void cpuset_init_current_mems_allowed(void); |
cf2a473c | 30 | void cpuset_update_task_memory_state(void); |
19770b32 | 31 | int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask); |
202f72d5 | 32 | |
a1bc5a4e DR |
33 | extern int __cpuset_node_allowed_softwall(int node, gfp_t gfp_mask); |
34 | extern int __cpuset_node_allowed_hardwall(int node, gfp_t gfp_mask); | |
02a0e53d | 35 | |
a1bc5a4e | 36 | static inline int cpuset_node_allowed_softwall(int node, gfp_t gfp_mask) |
02a0e53d PJ |
37 | { |
38 | return number_of_cpusets <= 1 || | |
a1bc5a4e | 39 | __cpuset_node_allowed_softwall(node, gfp_mask); |
02a0e53d PJ |
40 | } |
41 | ||
a1bc5a4e | 42 | static inline int cpuset_node_allowed_hardwall(int node, gfp_t gfp_mask) |
202f72d5 | 43 | { |
02a0e53d | 44 | return number_of_cpusets <= 1 || |
a1bc5a4e DR |
45 | __cpuset_node_allowed_hardwall(node, gfp_mask); |
46 | } | |
47 | ||
48 | static inline int cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask) | |
49 | { | |
50 | return cpuset_node_allowed_softwall(zone_to_nid(z), gfp_mask); | |
51 | } | |
52 | ||
53 | static inline int cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask) | |
54 | { | |
55 | return cpuset_node_allowed_hardwall(zone_to_nid(z), gfp_mask); | |
202f72d5 PJ |
56 | } |
57 | ||
bbe373f2 DR |
58 | extern int cpuset_mems_allowed_intersects(const struct task_struct *tsk1, |
59 | const struct task_struct *tsk2); | |
3e0d98b9 PJ |
60 | |
61 | #define cpuset_memory_pressure_bump() \ | |
62 | do { \ | |
63 | if (cpuset_memory_pressure_enabled) \ | |
64 | __cpuset_memory_pressure_bump(); \ | |
65 | } while (0) | |
66 | extern int cpuset_memory_pressure_enabled; | |
67 | extern void __cpuset_memory_pressure_bump(void); | |
68 | ||
54047320 | 69 | extern const struct file_operations proc_cpuset_operations; |
df5f8314 EB |
70 | struct seq_file; |
71 | extern void cpuset_task_status_allowed(struct seq_file *m, | |
72 | struct task_struct *task); | |
1da177e4 | 73 | |
505970b9 PJ |
74 | extern void cpuset_lock(void); |
75 | extern void cpuset_unlock(void); | |
76 | ||
825a46af PJ |
77 | extern int cpuset_mem_spread_node(void); |
78 | ||
79 | static inline int cpuset_do_page_mem_spread(void) | |
80 | { | |
81 | return current->flags & PF_SPREAD_PAGE; | |
82 | } | |
83 | ||
84 | static inline int cpuset_do_slab_mem_spread(void) | |
85 | { | |
86 | return current->flags & PF_SPREAD_SLAB; | |
87 | } | |
88 | ||
8793d854 PM |
89 | extern int current_cpuset_is_being_rebound(void); |
90 | ||
e761b772 MK |
91 | extern void rebuild_sched_domains(void); |
92 | ||
75aa1994 DR |
93 | extern void cpuset_print_task_mems_allowed(struct task_struct *p); |
94 | ||
1da177e4 LT |
95 | #else /* !CONFIG_CPUSETS */ |
96 | ||
c417f024 | 97 | static inline int cpuset_init_early(void) { return 0; } |
1da177e4 LT |
98 | static inline int cpuset_init(void) { return 0; } |
99 | static inline void cpuset_init_smp(void) {} | |
1da177e4 | 100 | |
6af866af LZ |
101 | static inline void cpuset_cpus_allowed(struct task_struct *p, |
102 | struct cpumask *mask) | |
1da177e4 | 103 | { |
aa85ea5b | 104 | cpumask_copy(mask, cpu_possible_mask); |
1da177e4 | 105 | } |
f9a86fcb | 106 | static inline void cpuset_cpus_allowed_locked(struct task_struct *p, |
6af866af | 107 | struct cpumask *mask) |
470fd646 | 108 | { |
aa85ea5b | 109 | cpumask_copy(mask, cpu_possible_mask); |
470fd646 | 110 | } |
1da177e4 | 111 | |
909d75a3 PJ |
112 | static inline nodemask_t cpuset_mems_allowed(struct task_struct *p) |
113 | { | |
114 | return node_possible_map; | |
115 | } | |
116 | ||
0e1e7c7a | 117 | #define cpuset_current_mems_allowed (node_states[N_HIGH_MEMORY]) |
1da177e4 | 118 | static inline void cpuset_init_current_mems_allowed(void) {} |
cf2a473c | 119 | static inline void cpuset_update_task_memory_state(void) {} |
1da177e4 | 120 | |
19770b32 | 121 | static inline int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask) |
1da177e4 LT |
122 | { |
123 | return 1; | |
124 | } | |
125 | ||
a1bc5a4e DR |
126 | static inline int cpuset_node_allowed_softwall(int node, gfp_t gfp_mask) |
127 | { | |
128 | return 1; | |
129 | } | |
130 | ||
131 | static inline int cpuset_node_allowed_hardwall(int node, gfp_t gfp_mask) | |
132 | { | |
133 | return 1; | |
134 | } | |
135 | ||
02a0e53d PJ |
136 | static inline int cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask) |
137 | { | |
138 | return 1; | |
139 | } | |
140 | ||
141 | static inline int cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask) | |
1da177e4 LT |
142 | { |
143 | return 1; | |
144 | } | |
145 | ||
bbe373f2 DR |
146 | static inline int cpuset_mems_allowed_intersects(const struct task_struct *tsk1, |
147 | const struct task_struct *tsk2) | |
ef08e3b4 PJ |
148 | { |
149 | return 1; | |
150 | } | |
151 | ||
3e0d98b9 PJ |
152 | static inline void cpuset_memory_pressure_bump(void) {} |
153 | ||
df5f8314 EB |
154 | static inline void cpuset_task_status_allowed(struct seq_file *m, |
155 | struct task_struct *task) | |
1da177e4 | 156 | { |
1da177e4 LT |
157 | } |
158 | ||
505970b9 PJ |
159 | static inline void cpuset_lock(void) {} |
160 | static inline void cpuset_unlock(void) {} | |
161 | ||
825a46af PJ |
162 | static inline int cpuset_mem_spread_node(void) |
163 | { | |
164 | return 0; | |
165 | } | |
166 | ||
167 | static inline int cpuset_do_page_mem_spread(void) | |
168 | { | |
169 | return 0; | |
170 | } | |
171 | ||
172 | static inline int cpuset_do_slab_mem_spread(void) | |
173 | { | |
174 | return 0; | |
175 | } | |
176 | ||
8793d854 PM |
177 | static inline int current_cpuset_is_being_rebound(void) |
178 | { | |
179 | return 0; | |
180 | } | |
181 | ||
e761b772 MK |
182 | static inline void rebuild_sched_domains(void) |
183 | { | |
dfb512ec | 184 | partition_sched_domains(1, NULL, NULL); |
e761b772 MK |
185 | } |
186 | ||
75aa1994 DR |
187 | static inline void cpuset_print_task_mems_allowed(struct task_struct *p) |
188 | { | |
189 | } | |
190 | ||
1da177e4 LT |
191 | #endif /* !CONFIG_CPUSETS */ |
192 | ||
193 | #endif /* _LINUX_CPUSET_H */ |