oom: remove special handling for pagefault ooms
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / oom.h
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1#ifndef __INCLUDE_LINUX_OOM_H
2#define __INCLUDE_LINUX_OOM_H
3
4/* /proc/<pid>/oom_adj set to -17 protects from the oom-killer */
5#define OOM_DISABLE (-17)
6/* inclusive */
7#define OOM_ADJUST_MIN (-16)
8#define OOM_ADJUST_MAX 15
9
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10#ifdef __KERNEL__
11
172acf60 12#include <linux/types.h>
4365a567 13#include <linux/nodemask.h>
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14
15struct zonelist;
16struct notifier_block;
17
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18/*
19 * Types of limitations to the nodes from which allocations may occur
20 */
21enum oom_constraint {
22 CONSTRAINT_NONE,
23 CONSTRAINT_CPUSET,
24 CONSTRAINT_MEMORY_POLICY,
309ed882 25 CONSTRAINT_MEMCG,
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26};
27
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28extern int try_set_zone_oom(struct zonelist *zonelist, gfp_t gfp_flags);
29extern void clear_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags);
098d7f12 30
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31extern void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask,
32 int order, nodemask_t *mask);
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33extern int register_oom_notifier(struct notifier_block *nb);
34extern int unregister_oom_notifier(struct notifier_block *nb);
35
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36extern bool oom_killer_disabled;
37
38static inline void oom_killer_disable(void)
39{
40 oom_killer_disabled = true;
41}
42
43static inline void oom_killer_enable(void)
44{
45 oom_killer_disabled = false;
46}
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47#endif /* __KERNEL__*/
48#endif /* _INCLUDE_LINUX_OOM_H */