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 */ 54