1 #ifndef __INCLUDE_LINUX_OOM_H
2 #define __INCLUDE_LINUX_OOM_H
5 #include <linux/sched.h>
6 #include <linux/types.h>
7 #include <linux/nodemask.h>
8 #include <uapi/linux/oom.h>
11 struct notifier_block
;
16 * Details of the page allocation that triggered the oom killer that are used to
17 * determine what should be killed.
20 /* Used to determine cpuset */
21 struct zonelist
*zonelist
;
23 /* Used to determine mempolicy */
26 /* Memory cgroup in which oom is invoked, or NULL for global oom */
27 struct mem_cgroup
*memcg
;
29 /* Used to determine cpuset and node locality requirement */
33 * order == -1 means the oom kill is required by sysrq, otherwise only
34 * for display purposes.
38 /* Used by oom implementation, do not set */
39 unsigned long totalpages
;
40 struct task_struct
*chosen
;
41 unsigned long chosen_points
;
44 extern struct mutex oom_lock
;
46 static inline void set_current_oom_origin(void)
48 current
->signal
->oom_flag_origin
= true;
51 static inline void clear_current_oom_origin(void)
53 current
->signal
->oom_flag_origin
= false;
56 static inline bool oom_task_origin(const struct task_struct
*p
)
58 return p
->signal
->oom_flag_origin
;
61 static inline bool tsk_is_oom_victim(struct task_struct
* tsk
)
63 return tsk
->signal
->oom_mm
;
66 extern unsigned long oom_badness(struct task_struct
*p
,
67 struct mem_cgroup
*memcg
, const nodemask_t
*nodemask
,
68 unsigned long totalpages
);
70 extern bool out_of_memory(struct oom_control
*oc
);
72 extern void exit_oom_victim(void);
74 extern int register_oom_notifier(struct notifier_block
*nb
);
75 extern int unregister_oom_notifier(struct notifier_block
*nb
);
77 extern bool oom_killer_disable(signed long timeout
);
78 extern void oom_killer_enable(void);
80 extern struct task_struct
*find_lock_task_mm(struct task_struct
*p
);
83 extern int sysctl_oom_dump_tasks
;
84 extern int sysctl_oom_kill_allocating_task
;
85 extern int sysctl_panic_on_oom
;
86 #endif /* _INCLUDE_LINUX_OOM_H */