| | 1 | #ifndef __INCLUDE_LINUX_OOM_H |
| | 2 | #define __INCLUDE_LINUX_OOM_H |
| | 3 | |
| | 4 | |
| | 5 | #include <linux/sched.h> |
| | 6 | #include <linux/types.h> |
| | 7 | #include <linux/nodemask.h> |
| | 8 | #include <uapi/linux/oom.h> |
| | 9 | |
| | 10 | struct zonelist; |
| | 11 | struct notifier_block; |
| | 12 | struct mem_cgroup; |
| | 13 | struct task_struct; |
| | 14 | |
| | 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, |
| | 22 | CONSTRAINT_MEMCG, |
| | 23 | }; |
| | 24 | |
| | 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 | |
| | 32 | extern void compare_swap_oom_score_adj(int old_val, int new_val); |
| | 33 | extern int test_set_oom_score_adj(int new_val); |
| | 34 | |
| | 35 | extern unsigned long oom_badness(struct task_struct *p, |
| | 36 | struct mem_cgroup *memcg, const nodemask_t *nodemask, |
| | 37 | unsigned long totalpages); |
| | 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 | |
| | 43 | extern int try_set_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags); |
| | 44 | extern void clear_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags); |
| | 45 | |
| | 46 | extern void check_panic_on_oom(enum oom_constraint constraint, gfp_t gfp_mask, |
| | 47 | int order, const nodemask_t *nodemask); |
| | 48 | |
| | 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); |
| | 52 | extern void mem_cgroup_out_of_memory(struct mem_cgroup *memcg, gfp_t gfp_mask, |
| | 53 | int order); |
| | 54 | |
| | 55 | extern void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask, |
| | 56 | int order, nodemask_t *mask, bool force_kill); |
| | 57 | extern int register_oom_notifier(struct notifier_block *nb); |
| | 58 | extern int unregister_oom_notifier(struct notifier_block *nb); |
| | 59 | |
| | 60 | extern bool oom_killer_disabled; |
| | 61 | |
| | 62 | static inline void oom_killer_disable(void) |
| | 63 | { |
| | 64 | oom_killer_disabled = true; |
| | 65 | } |
| | 66 | |
| | 67 | static inline void oom_killer_enable(void) |
| | 68 | { |
| | 69 | oom_killer_disabled = false; |
| | 70 | } |
| | 71 | |
| | 72 | extern struct task_struct *find_lock_task_mm(struct task_struct *p); |
| | 73 | |
| | 74 | /* sysctls */ |
| | 75 | extern int sysctl_oom_dump_tasks; |
| | 76 | extern int sysctl_oom_kill_allocating_task; |
| | 77 | extern int sysctl_panic_on_oom; |
| | 78 | #endif /* _INCLUDE_LINUX_OOM_H */ |
projects / linux-2.6-block.git / blame_incremental