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