Commit | Line | Data |
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8ac773b4 AD |
1 | #ifndef __INCLUDE_LINUX_OOM_H |
2 | #define __INCLUDE_LINUX_OOM_H | |
3 | ||
a63d83f4 | 4 | /* |
51b1bd2a DR |
5 | * /proc/<pid>/oom_adj is deprecated, see |
6 | * Documentation/feature-removal-schedule.txt. | |
7 | * | |
a63d83f4 DR |
8 | * /proc/<pid>/oom_adj set to -17 protects from the oom-killer |
9 | */ | |
8ac773b4 AD |
10 | #define OOM_DISABLE (-17) |
11 | /* inclusive */ | |
12 | #define OOM_ADJUST_MIN (-16) | |
13 | #define OOM_ADJUST_MAX 15 | |
14 | ||
a63d83f4 DR |
15 | /* |
16 | * /proc/<pid>/oom_score_adj set to OOM_SCORE_ADJ_MIN disables oom killing for | |
17 | * pid. | |
18 | */ | |
19 | #define OOM_SCORE_ADJ_MIN (-1000) | |
20 | #define OOM_SCORE_ADJ_MAX 1000 | |
21 | ||
5a3135c2 DR |
22 | #ifdef __KERNEL__ |
23 | ||
a63d83f4 | 24 | #include <linux/sched.h> |
172acf60 | 25 | #include <linux/types.h> |
4365a567 | 26 | #include <linux/nodemask.h> |
172acf60 DR |
27 | |
28 | struct zonelist; | |
29 | struct notifier_block; | |
74bcbf40 AM |
30 | struct mem_cgroup; |
31 | struct task_struct; | |
172acf60 | 32 | |
70e24bdf DR |
33 | /* |
34 | * Types of limitations to the nodes from which allocations may occur | |
35 | */ | |
36 | enum oom_constraint { | |
37 | CONSTRAINT_NONE, | |
38 | CONSTRAINT_CPUSET, | |
39 | CONSTRAINT_MEMORY_POLICY, | |
309ed882 | 40 | CONSTRAINT_MEMCG, |
70e24bdf DR |
41 | }; |
42 | ||
43362a49 | 43 | extern void compare_swap_oom_score_adj(int old_val, int new_val); |
72788c38 DR |
44 | extern int test_set_oom_score_adj(int new_val); |
45 | ||
a7f638f9 DR |
46 | extern unsigned long oom_badness(struct task_struct *p, |
47 | struct mem_cgroup *memcg, const nodemask_t *nodemask, | |
48 | unsigned long totalpages); | |
ff321fea | 49 | extern int try_set_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags); |
dd1a239f | 50 | extern void clear_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags); |
098d7f12 | 51 | |
4365a567 | 52 | extern void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask, |
08ab9b10 | 53 | int order, nodemask_t *mask, bool force_kill); |
5a3135c2 DR |
54 | extern int register_oom_notifier(struct notifier_block *nb); |
55 | extern int unregister_oom_notifier(struct notifier_block *nb); | |
56 | ||
1a8670a2 AD |
57 | extern bool oom_killer_disabled; |
58 | ||
59 | static inline void oom_killer_disable(void) | |
60 | { | |
61 | oom_killer_disabled = true; | |
62 | } | |
63 | ||
64 | static inline void oom_killer_enable(void) | |
65 | { | |
66 | oom_killer_disabled = false; | |
67 | } | |
8e4228e1 | 68 | |
158e0a2d KH |
69 | extern struct task_struct *find_lock_task_mm(struct task_struct *p); |
70 | ||
8e4228e1 DR |
71 | /* sysctls */ |
72 | extern int sysctl_oom_dump_tasks; | |
73 | extern int sysctl_oom_kill_allocating_task; | |
74 | extern int sysctl_panic_on_oom; | |
5a3135c2 DR |
75 | #endif /* __KERNEL__*/ |
76 | #endif /* _INCLUDE_LINUX_OOM_H */ |