projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 8ac773b4 AD |
1 | #ifndef __INCLUDE_LINUX_OOM_H |
| 2 | #define __INCLUDE_LINUX_OOM_H | |
| 3 | ||
| 5a3135c2 | 4 | |
| a63d83f4 | 5 | #include <linux/sched.h> |
| 172acf60 | 6 | #include <linux/types.h> |
| 4365a567 | 7 | #include <linux/nodemask.h> |
| 607ca46e | 8 | #include <uapi/linux/oom.h> |
| 172acf60 DR |
9 | |
| 10 | struct zonelist; | |
| 11 | struct notifier_block; | |
| 74bcbf40 AM |
12 | struct mem_cgroup; |
| 13 | struct task_struct; | |
| 172acf60 | 14 | |
| 70e24bdf DR |
15 | /* |
| 16 | * Types of limitations to the nodes from which allocations may occur | |
| 17 | */ | |
| 18 | enum oom_constraint { | |
| 19 | CONSTRAINT_NONE, | |
| 20 | CONSTRAINT_CPUSET, | |
| 21 | CONSTRAINT_MEMORY_POLICY, | |
| 309ed882 | 22 | CONSTRAINT_MEMCG, |
| 70e24bdf DR |
23 | }; |
| 24 | ||
| 9cbb78bb DR |
25 | enum oom_scan_t { |
| 26 | OOM_SCAN_OK, /* scan thread and find its badness */ | |
| 27 | OOM_SCAN_CONTINUE, /* do not consider thread for oom kill */ | |
| 28 | OOM_SCAN_ABORT, /* abort the iteration and return */ | |
| 29 | OOM_SCAN_SELECT, /* always select this thread first */ | |
| 30 | }; | |
| 31 | ||
| a9c58b90 DR |
32 | extern void compare_swap_oom_score_adj(short old_val, short new_val); |
| 33 | extern short test_set_oom_score_adj(short new_val); | |
| 72788c38 | 34 | |
| a7f638f9 DR |
35 | extern unsigned long oom_badness(struct task_struct *p, |
| 36 | struct mem_cgroup *memcg, const nodemask_t *nodemask, | |
| 37 | unsigned long totalpages); | |
| 9cbb78bb DR |
38 | extern void oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order, |
| 39 | unsigned int points, unsigned long totalpages, | |
| 40 | struct mem_cgroup *memcg, nodemask_t *nodemask, | |
| 41 | const char *message); | |
| 42 | ||
| ff321fea | 43 | extern int try_set_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags); |
| dd1a239f | 44 | extern void clear_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags); |
| 098d7f12 | 45 | |
| 876aafbf DR |
46 | extern void check_panic_on_oom(enum oom_constraint constraint, gfp_t gfp_mask, |
| 47 | int order, const nodemask_t *nodemask); | |
| 48 | ||
| 9cbb78bb DR |
49 | extern enum oom_scan_t oom_scan_process_thread(struct task_struct *task, |
| 50 | unsigned long totalpages, const nodemask_t *nodemask, | |
| 51 | bool force_kill); | |
| 9cbb78bb | 52 | |
| 4365a567 | 53 | extern void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask, |
| 08ab9b10 | 54 | int order, nodemask_t *mask, bool force_kill); |
| 5a3135c2 DR |
55 | extern int register_oom_notifier(struct notifier_block *nb); |
| 56 | extern int unregister_oom_notifier(struct notifier_block *nb); | |
| 57 | ||
| 1a8670a2 AD |
58 | extern bool oom_killer_disabled; |
| 59 | ||
| 60 | static inline void oom_killer_disable(void) | |
| 61 | { | |
| 62 | oom_killer_disabled = true; | |
| 63 | } | |
| 64 | ||
| 65 | static inline void oom_killer_enable(void) | |
| 66 | { | |
| 67 | oom_killer_disabled = false; | |
| 68 | } | |
| 8e4228e1 | 69 | |
| 158e0a2d KH |
70 | extern struct task_struct *find_lock_task_mm(struct task_struct *p); |
| 71 | ||
| 8e4228e1 DR |
72 | /* sysctls */ |
| 73 | extern int sysctl_oom_dump_tasks; | |
| 74 | extern int sysctl_oom_kill_allocating_task; | |
| 75 | extern int sysctl_panic_on_oom; | |
| 5a3135c2 | 76 | #endif /* _INCLUDE_LINUX_OOM_H */ |