mm, memcg: introduce own oom handler to iterate only over its own threads

[profile/ivi/kernel-adaptation-intel-automotive.git] / include / linux / oom.h

diff --git a/include/linux/oom.h b/include/linux/oom.h
index eb9dc14..5dc0e38 100644 (file)
--- a/include/linux/oom.h
+++ b/include/linux/oom.h
@@ -40,17 +40,33 @@ enum oom_constraint {
        CONSTRAINT_MEMCG,
 };
 
+enum oom_scan_t {
+       OOM_SCAN_OK,            /* scan thread and find its badness */
+       OOM_SCAN_CONTINUE,      /* do not consider thread for oom kill */
+       OOM_SCAN_ABORT,         /* abort the iteration and return */
+       OOM_SCAN_SELECT,        /* always select this thread first */
+};
+
 extern void compare_swap_oom_score_adj(int old_val, int new_val);
 extern int test_set_oom_score_adj(int new_val);
 
 extern unsigned long oom_badness(struct task_struct *p,
                struct mem_cgroup *memcg, const nodemask_t *nodemask,
                unsigned long totalpages);
+extern void oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,
+                            unsigned int points, unsigned long totalpages,
+                            struct mem_cgroup *memcg, nodemask_t *nodemask,
+                            const char *message);
+
 extern int try_set_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags);
 extern void clear_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags);
 
+extern enum oom_scan_t oom_scan_process_thread(struct task_struct *task,
+               unsigned long totalpages, const nodemask_t *nodemask,
+               bool force_kill);
 extern void mem_cgroup_out_of_memory(struct mem_cgroup *memcg, gfp_t gfp_mask,
                                     int order);
+
 extern void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask,
                int order, nodemask_t *mask, bool force_kill);
 extern int register_oom_notifier(struct notifier_block *nb);