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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); | |
909d75a3 | 23 | extern cpumask_t cpuset_cpus_allowed(struct task_struct *p); |
470fd646 | 24 | extern cpumask_t cpuset_cpus_allowed_locked(struct task_struct *p); |
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); |
5966514d PJ |
29 | #define cpuset_nodes_subset_current_mems_allowed(nodes) \ |
30 | nodes_subset((nodes), current->mems_allowed) | |
1da177e4 | 31 | int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl); |
202f72d5 | 32 | |
02a0e53d PJ |
33 | extern int __cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask); |
34 | extern int __cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask); | |
35 | ||
36 | static int inline cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask) | |
37 | { | |
38 | return number_of_cpusets <= 1 || | |
39 | __cpuset_zone_allowed_softwall(z, gfp_mask); | |
40 | } | |
41 | ||
42 | static int inline cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask) | |
202f72d5 | 43 | { |
02a0e53d PJ |
44 | return number_of_cpusets <= 1 || |
45 | __cpuset_zone_allowed_hardwall(z, gfp_mask); | |
202f72d5 PJ |
46 | } |
47 | ||
bbe373f2 DR |
48 | extern int cpuset_mems_allowed_intersects(const struct task_struct *tsk1, |
49 | const struct task_struct *tsk2); | |
3e0d98b9 PJ |
50 | |
51 | #define cpuset_memory_pressure_bump() \ | |
52 | do { \ | |
53 | if (cpuset_memory_pressure_enabled) \ | |
54 | __cpuset_memory_pressure_bump(); \ | |
55 | } while (0) | |
56 | extern int cpuset_memory_pressure_enabled; | |
57 | extern void __cpuset_memory_pressure_bump(void); | |
58 | ||
54047320 | 59 | extern const struct file_operations proc_cpuset_operations; |
1da177e4 LT |
60 | extern char *cpuset_task_status_allowed(struct task_struct *task, char *buffer); |
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 | ||
1da177e4 LT |
81 | #else /* !CONFIG_CPUSETS */ |
82 | ||
c417f024 | 83 | static inline int cpuset_init_early(void) { return 0; } |
1da177e4 LT |
84 | static inline int cpuset_init(void) { return 0; } |
85 | static inline void cpuset_init_smp(void) {} | |
1da177e4 LT |
86 | |
87 | static inline cpumask_t cpuset_cpus_allowed(struct task_struct *p) | |
88 | { | |
89 | return cpu_possible_map; | |
90 | } | |
470fd646 CW |
91 | static inline cpumask_t cpuset_cpus_allowed_locked(struct task_struct *p) |
92 | { | |
93 | return cpu_possible_map; | |
94 | } | |
1da177e4 | 95 | |
909d75a3 PJ |
96 | static inline nodemask_t cpuset_mems_allowed(struct task_struct *p) |
97 | { | |
98 | return node_possible_map; | |
99 | } | |
100 | ||
0e1e7c7a | 101 | #define cpuset_current_mems_allowed (node_states[N_HIGH_MEMORY]) |
1da177e4 | 102 | static inline void cpuset_init_current_mems_allowed(void) {} |
cf2a473c | 103 | static inline void cpuset_update_task_memory_state(void) {} |
5966514d | 104 | #define cpuset_nodes_subset_current_mems_allowed(nodes) (1) |
1da177e4 LT |
105 | |
106 | static inline int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl) | |
107 | { | |
108 | return 1; | |
109 | } | |
110 | ||
02a0e53d PJ |
111 | static inline int cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask) |
112 | { | |
113 | return 1; | |
114 | } | |
115 | ||
116 | static inline int cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask) | |
1da177e4 LT |
117 | { |
118 | return 1; | |
119 | } | |
120 | ||
bbe373f2 DR |
121 | static inline int cpuset_mems_allowed_intersects(const struct task_struct *tsk1, |
122 | const struct task_struct *tsk2) | |
ef08e3b4 PJ |
123 | { |
124 | return 1; | |
125 | } | |
126 | ||
3e0d98b9 PJ |
127 | static inline void cpuset_memory_pressure_bump(void) {} |
128 | ||
1da177e4 LT |
129 | static inline char *cpuset_task_status_allowed(struct task_struct *task, |
130 | char *buffer) | |
131 | { | |
132 | return buffer; | |
133 | } | |
134 | ||
505970b9 PJ |
135 | static inline void cpuset_lock(void) {} |
136 | static inline void cpuset_unlock(void) {} | |
137 | ||
825a46af PJ |
138 | static inline int cpuset_mem_spread_node(void) |
139 | { | |
140 | return 0; | |
141 | } | |
142 | ||
143 | static inline int cpuset_do_page_mem_spread(void) | |
144 | { | |
145 | return 0; | |
146 | } | |
147 | ||
148 | static inline int cpuset_do_slab_mem_spread(void) | |
149 | { | |
150 | return 0; | |
151 | } | |
152 | ||
38837fc7 PJ |
153 | static inline void cpuset_track_online_nodes(void) {} |
154 | ||
8793d854 PM |
155 | static inline int current_cpuset_is_being_rebound(void) |
156 | { | |
157 | return 0; | |
158 | } | |
159 | ||
1da177e4 LT |
160 | #endif /* !CONFIG_CPUSETS */ |
161 | ||
162 | #endif /* _LINUX_CPUSET_H */ |