1 #ifndef __INCLUDE_LINUX_OOM_H
2 #define __INCLUDE_LINUX_OOM_H
5 * /proc/<pid>/oom_adj is deprecated, see
6 * Documentation/feature-removal-schedule.txt.
8 * /proc/<pid>/oom_adj set to -17 protects from the oom-killer
10 #define OOM_DISABLE (-17)
12 #define OOM_ADJUST_MIN (-16)
13 #define OOM_ADJUST_MAX 15
16 * /proc/<pid>/oom_score_adj set to OOM_SCORE_ADJ_MIN disables oom killing for
19 #define OOM_SCORE_ADJ_MIN (-1000)
20 #define OOM_SCORE_ADJ_MAX 1000
24 #include <linux/sched.h>
25 #include <linux/types.h>
26 #include <linux/nodemask.h>
29 struct notifier_block
;
34 * Types of limitations to the nodes from which allocations may occur
39 CONSTRAINT_MEMORY_POLICY
,
43 extern void compare_swap_oom_score_adj(int old_val
, int new_val
);
44 extern int test_set_oom_score_adj(int new_val
);
46 extern unsigned long oom_badness(struct task_struct
*p
,
47 struct mem_cgroup
*memcg
, const nodemask_t
*nodemask
,
48 unsigned long totalpages
);
49 extern int try_set_zonelist_oom(struct zonelist
*zonelist
, gfp_t gfp_flags
);
50 extern void clear_zonelist_oom(struct zonelist
*zonelist
, gfp_t gfp_flags
);
52 extern void out_of_memory(struct zonelist
*zonelist
, gfp_t gfp_mask
,
53 int order
, nodemask_t
*mask
, bool force_kill
);
54 extern int register_oom_notifier(struct notifier_block
*nb
);
55 extern int unregister_oom_notifier(struct notifier_block
*nb
);
57 extern bool oom_killer_disabled
;
59 static inline void oom_killer_disable(void)
61 oom_killer_disabled
= true;
64 static inline void oom_killer_enable(void)
66 oom_killer_disabled
= false;
69 extern struct task_struct
*find_lock_task_mm(struct task_struct
*p
);
72 extern int sysctl_oom_dump_tasks
;
73 extern int sysctl_oom_kill_allocating_task
;
74 extern int sysctl_panic_on_oom
;
75 #endif /* __KERNEL__*/
76 #endif /* _INCLUDE_LINUX_OOM_H */