| 1 | #ifndef __INCLUDE_LINUX_OOM_H |
| 2 | #define __INCLUDE_LINUX_OOM_H |
| 3 | |
| 4 | /* /proc/<pid>/oom_adj set to -17 protects from the oom-killer */ |
| 5 | #define OOM_DISABLE (-17) |
| 6 | /* inclusive */ |
| 7 | #define OOM_ADJUST_MIN (-16) |
| 8 | #define OOM_ADJUST_MAX 15 |
| 9 | |
| 10 | #ifdef __KERNEL__ |
| 11 | |
| 12 | #include <linux/types.h> |
| 13 | #include <linux/nodemask.h> |
| 14 | |
| 15 | struct zonelist; |
| 16 | struct notifier_block; |
| 17 | |
| 18 | /* |
| 19 | * Types of limitations to the nodes from which allocations may occur |
| 20 | */ |
| 21 | enum oom_constraint { |
| 22 | CONSTRAINT_NONE, |
| 23 | CONSTRAINT_CPUSET, |
| 24 | CONSTRAINT_MEMORY_POLICY, |
| 25 | CONSTRAINT_MEMCG, |
| 26 | }; |
| 27 | |
| 28 | extern int try_set_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags); |
| 29 | extern void clear_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags); |
| 30 | |
| 31 | extern void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask, |
| 32 | int order, nodemask_t *mask); |
| 33 | extern int register_oom_notifier(struct notifier_block *nb); |
| 34 | extern int unregister_oom_notifier(struct notifier_block *nb); |
| 35 | |
| 36 | extern bool oom_killer_disabled; |
| 37 | |
| 38 | static inline void oom_killer_disable(void) |
| 39 | { |
| 40 | oom_killer_disabled = true; |
| 41 | } |
| 42 | |
| 43 | static inline void oom_killer_enable(void) |
| 44 | { |
| 45 | oom_killer_disabled = false; |
| 46 | } |
| 47 | |
| 48 | /* sysctls */ |
| 49 | extern int sysctl_oom_dump_tasks; |
| 50 | extern int sysctl_oom_kill_allocating_task; |
| 51 | extern int sysctl_panic_on_oom; |
| 52 | #endif /* __KERNEL__*/ |
| 53 | #endif /* _INCLUDE_LINUX_OOM_H */ |