1 #ifndef __INCLUDE_LINUX_OOM_H
2 #define __INCLUDE_LINUX_OOM_H
5 * /proc/<pid>/oom_adj set to -17 protects from the oom-killer
7 #define OOM_DISABLE (-17)
9 #define OOM_ADJUST_MIN (-16)
10 #define OOM_ADJUST_MAX 15
13 * /proc/<pid>/oom_score_adj set to OOM_SCORE_ADJ_MIN disables oom killing for
16 #define OOM_SCORE_ADJ_MIN (-1000)
17 #define OOM_SCORE_ADJ_MAX 1000
21 #include <linux/sched.h>
22 #include <linux/types.h>
23 #include <linux/nodemask.h>
26 struct notifier_block;
31 * Types of limitations to the nodes from which allocations may occur
36 CONSTRAINT_MEMORY_POLICY,
40 extern unsigned int oom_badness(struct task_struct *p, struct mem_cgroup *mem,
41 const nodemask_t *nodemask, unsigned long totalpages);
42 extern int try_set_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags);
43 extern void clear_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags);
45 extern void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask,
46 int order, nodemask_t *mask);
47 extern int register_oom_notifier(struct notifier_block *nb);
48 extern int unregister_oom_notifier(struct notifier_block *nb);
50 extern bool oom_killer_disabled;
52 static inline void oom_killer_disable(void)
54 oom_killer_disabled = true;
57 static inline void oom_killer_enable(void)
59 oom_killer_disabled = false;
62 /* The badness from the OOM killer */
63 extern unsigned long badness(struct task_struct *p, struct mem_cgroup *mem,
64 const nodemask_t *nodemask, unsigned long uptime);
67 extern int sysctl_oom_dump_tasks;
68 extern int sysctl_oom_kill_allocating_task;
69 extern int sysctl_panic_on_oom;
70 #endif /* __KERNEL__*/
71 #endif /* _INCLUDE_LINUX_OOM_H */