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-rw-r--r--include/linux/oom.h19
1 files changed, 17 insertions, 2 deletions
diff --git a/include/linux/oom.h b/include/linux/oom.h
index 922dab164eb0..da60007075b5 100644
--- a/include/linux/oom.h
+++ b/include/linux/oom.h
@@ -29,8 +29,23 @@ enum oom_scan_t {
29 OOM_SCAN_SELECT, /* always select this thread first */ 29 OOM_SCAN_SELECT, /* always select this thread first */
30}; 30};
31 31
32extern void compare_swap_oom_score_adj(short old_val, short new_val); 32/* Thread is the potential origin of an oom condition; kill first on oom */
33extern short test_set_oom_score_adj(short new_val); 33#define OOM_FLAG_ORIGIN ((__force oom_flags_t)0x1)
34
35static inline void set_current_oom_origin(void)
36{
37 current->signal->oom_flags |= OOM_FLAG_ORIGIN;
38}
39
40static inline void clear_current_oom_origin(void)
41{
42 current->signal->oom_flags &= ~OOM_FLAG_ORIGIN;
43}
44
45static inline bool oom_task_origin(const struct task_struct *p)
46{
47 return !!(p->signal->oom_flags & OOM_FLAG_ORIGIN);
48}
34 49
35extern unsigned long oom_badness(struct task_struct *p, 50extern unsigned long oom_badness(struct task_struct *p,
36 struct mem_cgroup *memcg, const nodemask_t *nodemask, 51 struct mem_cgroup *memcg, const nodemask_t *nodemask,