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include/linux/oom.h
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#ifndef __INCLUDE_LINUX_OOM_H #define __INCLUDE_LINUX_OOM_H |
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/* |
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* /proc/<pid>/oom_adj is deprecated, see * Documentation/feature-removal-schedule.txt. * |
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* /proc/<pid>/oom_adj set to -17 protects from the oom-killer */ |
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#define OOM_DISABLE (-17) /* inclusive */ #define OOM_ADJUST_MIN (-16) #define OOM_ADJUST_MAX 15 |
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/* * /proc/<pid>/oom_score_adj set to OOM_SCORE_ADJ_MIN disables oom killing for * pid. */ #define OOM_SCORE_ADJ_MIN (-1000) #define OOM_SCORE_ADJ_MAX 1000 |
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#ifdef __KERNEL__ |
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#include <linux/sched.h> |
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#include <linux/types.h> |
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#include <linux/nodemask.h> |
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struct zonelist; struct notifier_block; |
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struct mem_cgroup; struct task_struct; |
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/* * Types of limitations to the nodes from which allocations may occur */ enum oom_constraint { CONSTRAINT_NONE, CONSTRAINT_CPUSET, CONSTRAINT_MEMORY_POLICY, |
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CONSTRAINT_MEMCG, |
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}; |
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extern void compare_swap_oom_score_adj(int old_val, int new_val); |
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extern int test_set_oom_score_adj(int new_val); |
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extern unsigned int oom_badness(struct task_struct *p, struct mem_cgroup *memcg, |
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const nodemask_t *nodemask, unsigned long totalpages); |
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extern int try_set_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags); |
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extern void clear_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags); |
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extern void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask, int order, nodemask_t *mask); |
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extern int register_oom_notifier(struct notifier_block *nb); extern int unregister_oom_notifier(struct notifier_block *nb); |
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extern bool oom_killer_disabled; static inline void oom_killer_disable(void) { oom_killer_disabled = true; } static inline void oom_killer_enable(void) { oom_killer_disabled = false; } |
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extern struct task_struct *find_lock_task_mm(struct task_struct *p); |
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/* sysctls */ extern int sysctl_oom_dump_tasks; extern int sysctl_oom_kill_allocating_task; extern int sysctl_panic_on_oom; |
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#endif /* __KERNEL__*/ #endif /* _INCLUDE_LINUX_OOM_H */ |