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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); | |
f9a86fcb MT |
23 | extern void cpuset_cpus_allowed(struct task_struct *p, cpumask_t *mask); |
24 | extern void cpuset_cpus_allowed_locked(struct task_struct *p, cpumask_t *mask); | |
909d75a3 | 25 | extern nodemask_t cpuset_mems_allowed(struct task_struct *p); |
9276b1bc | 26 | #define cpuset_current_mems_allowed (current->mems_allowed) |
1da177e4 | 27 | void cpuset_init_current_mems_allowed(void); |
cf2a473c | 28 | void cpuset_update_task_memory_state(void); |
19770b32 | 29 | int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask); |
202f72d5 | 30 | |
02a0e53d PJ |
31 | extern int __cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask); |
32 | extern int __cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask); | |
33 | ||
34 | static int inline cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask) | |
35 | { | |
36 | return number_of_cpusets <= 1 || | |
37 | __cpuset_zone_allowed_softwall(z, gfp_mask); | |
38 | } | |
39 | ||
40 | static int inline cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask) | |
202f72d5 | 41 | { |
02a0e53d PJ |
42 | return number_of_cpusets <= 1 || |
43 | __cpuset_zone_allowed_hardwall(z, gfp_mask); | |
202f72d5 PJ |
44 | } |
45 | ||
bbe373f2 DR |
46 | extern int cpuset_mems_allowed_intersects(const struct task_struct *tsk1, |
47 | const struct task_struct *tsk2); | |
3e0d98b9 PJ |
48 | |
49 | #define cpuset_memory_pressure_bump() \ | |
50 | do { \ | |
51 | if (cpuset_memory_pressure_enabled) \ | |
52 | __cpuset_memory_pressure_bump(); \ | |
53 | } while (0) | |
54 | extern int cpuset_memory_pressure_enabled; | |
55 | extern void __cpuset_memory_pressure_bump(void); | |
56 | ||
54047320 | 57 | extern const struct file_operations proc_cpuset_operations; |
df5f8314 EB |
58 | struct seq_file; |
59 | extern void cpuset_task_status_allowed(struct seq_file *m, | |
60 | struct task_struct *task); | |
1da177e4 | 61 | |
505970b9 PJ |
62 | extern void cpuset_lock(void); |
63 | extern void cpuset_unlock(void); | |
64 | ||
825a46af PJ |
65 | extern int cpuset_mem_spread_node(void); |
66 | ||
67 | static inline int cpuset_do_page_mem_spread(void) | |
68 | { | |
69 | return current->flags & PF_SPREAD_PAGE; | |
70 | } | |
71 | ||
72 | static inline int cpuset_do_slab_mem_spread(void) | |
73 | { | |
74 | return current->flags & PF_SPREAD_SLAB; | |
75 | } | |
76 | ||
38837fc7 PJ |
77 | extern void cpuset_track_online_nodes(void); |
78 | ||
8793d854 PM |
79 | extern int current_cpuset_is_being_rebound(void); |
80 | ||
e761b772 MK |
81 | extern void rebuild_sched_domains(void); |
82 | ||
1da177e4 LT |
83 | #else /* !CONFIG_CPUSETS */ |
84 | ||
c417f024 | 85 | static inline int cpuset_init_early(void) { return 0; } |
1da177e4 LT |
86 | static inline int cpuset_init(void) { return 0; } |
87 | static inline void cpuset_init_smp(void) {} | |
1da177e4 | 88 | |
f9a86fcb | 89 | static inline void cpuset_cpus_allowed(struct task_struct *p, cpumask_t *mask) |
1da177e4 | 90 | { |
f9a86fcb | 91 | *mask = cpu_possible_map; |
1da177e4 | 92 | } |
f9a86fcb MT |
93 | static inline void cpuset_cpus_allowed_locked(struct task_struct *p, |
94 | cpumask_t *mask) | |
470fd646 | 95 | { |
f9a86fcb | 96 | *mask = cpu_possible_map; |
470fd646 | 97 | } |
1da177e4 | 98 | |
909d75a3 PJ |
99 | static inline nodemask_t cpuset_mems_allowed(struct task_struct *p) |
100 | { | |
101 | return node_possible_map; | |
102 | } | |
103 | ||
0e1e7c7a | 104 | #define cpuset_current_mems_allowed (node_states[N_HIGH_MEMORY]) |
1da177e4 | 105 | static inline void cpuset_init_current_mems_allowed(void) {} |
cf2a473c | 106 | static inline void cpuset_update_task_memory_state(void) {} |
1da177e4 | 107 | |
19770b32 | 108 | static inline int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask) |
1da177e4 LT |
109 | { |
110 | return 1; | |
111 | } | |
112 | ||
02a0e53d PJ |
113 | static inline int cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask) |
114 | { | |
115 | return 1; | |
116 | } | |
117 | ||
118 | static inline int cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask) | |
1da177e4 LT |
119 | { |
120 | return 1; | |
121 | } | |
122 | ||
bbe373f2 DR |
123 | static inline int cpuset_mems_allowed_intersects(const struct task_struct *tsk1, |
124 | const struct task_struct *tsk2) | |
ef08e3b4 PJ |
125 | { |
126 | return 1; | |
127 | } | |
128 | ||
3e0d98b9 PJ |
129 | static inline void cpuset_memory_pressure_bump(void) {} |
130 | ||
df5f8314 EB |
131 | static inline void cpuset_task_status_allowed(struct seq_file *m, |
132 | struct task_struct *task) | |
1da177e4 | 133 | { |
1da177e4 LT |
134 | } |
135 | ||
505970b9 PJ |
136 | static inline void cpuset_lock(void) {} |
137 | static inline void cpuset_unlock(void) {} | |
138 | ||
825a46af PJ |
139 | static inline int cpuset_mem_spread_node(void) |
140 | { | |
141 | return 0; | |
142 | } | |
143 | ||
144 | static inline int cpuset_do_page_mem_spread(void) | |
145 | { | |
146 | return 0; | |
147 | } | |
148 | ||
149 | static inline int cpuset_do_slab_mem_spread(void) | |
150 | { | |
151 | return 0; | |
152 | } | |
153 | ||
38837fc7 PJ |
154 | static inline void cpuset_track_online_nodes(void) {} |
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 | { | |
163 | partition_sched_domains(0, NULL, NULL); | |
164 | } | |
165 | ||
1da177e4 LT |
166 | #endif /* !CONFIG_CPUSETS */ |
167 | ||
168 | #endif /* _LINUX_CPUSET_H */ |