Lines Matching full:oc
71 static inline bool is_memcg_oom(struct oom_control *oc) in is_memcg_oom() argument
73 return oc->memcg != NULL; in is_memcg_oom()
80 * @oc: pointer to struct oom_control
90 struct oom_control *oc) in oom_cpuset_eligible() argument
94 const nodemask_t *mask = oc->nodemask; in oom_cpuset_eligible()
96 if (is_memcg_oom(oc)) in oom_cpuset_eligible()
124 static bool oom_cpuset_eligible(struct task_struct *tsk, struct oom_control *oc) in oom_cpuset_eligible() argument
159 static inline bool is_sysrq_oom(struct oom_control *oc) in is_sysrq_oom() argument
161 return oc->order == -1; in is_sysrq_oom()
254 static enum oom_constraint constrained_alloc(struct oom_control *oc) in constrained_alloc() argument
258 enum zone_type highest_zoneidx = gfp_zone(oc->gfp_mask); in constrained_alloc()
262 if (is_memcg_oom(oc)) { in constrained_alloc()
263 oc->totalpages = mem_cgroup_get_max(oc->memcg) ?: 1; in constrained_alloc()
268 oc->totalpages = totalram_pages() + total_swap_pages; in constrained_alloc()
273 if (!oc->zonelist) in constrained_alloc()
280 if (oc->gfp_mask & __GFP_THISNODE) in constrained_alloc()
288 if (oc->nodemask && in constrained_alloc()
289 !nodes_subset(node_states[N_MEMORY], *oc->nodemask)) { in constrained_alloc()
290 oc->totalpages = total_swap_pages; in constrained_alloc()
291 for_each_node_mask(nid, *oc->nodemask) in constrained_alloc()
292 oc->totalpages += node_present_pages(nid); in constrained_alloc()
297 for_each_zone_zonelist_nodemask(zone, z, oc->zonelist, in constrained_alloc()
298 highest_zoneidx, oc->nodemask) in constrained_alloc()
299 if (!cpuset_zone_allowed(zone, oc->gfp_mask)) in constrained_alloc()
303 oc->totalpages = total_swap_pages; in constrained_alloc()
305 oc->totalpages += node_present_pages(nid); in constrained_alloc()
313 struct oom_control *oc = arg; in oom_evaluate_task() local
320 if (!is_memcg_oom(oc) && !oom_cpuset_eligible(task, oc)) in oom_evaluate_task()
329 if (!is_sysrq_oom(oc) && tsk_is_oom_victim(task)) { in oom_evaluate_task()
344 points = oom_badness(task, oc->totalpages); in oom_evaluate_task()
345 if (points == LONG_MIN || points < oc->chosen_points) in oom_evaluate_task()
349 if (oc->chosen) in oom_evaluate_task()
350 put_task_struct(oc->chosen); in oom_evaluate_task()
352 oc->chosen = task; in oom_evaluate_task()
353 oc->chosen_points = points; in oom_evaluate_task()
357 if (oc->chosen) in oom_evaluate_task()
358 put_task_struct(oc->chosen); in oom_evaluate_task()
359 oc->chosen = (void *)-1UL; in oom_evaluate_task()
365 * 'points'. In case scan was aborted, oc->chosen is set to -1.
367 static void select_bad_process(struct oom_control *oc) in select_bad_process() argument
369 oc->chosen_points = LONG_MIN; in select_bad_process()
371 if (is_memcg_oom(oc)) in select_bad_process()
372 mem_cgroup_scan_tasks(oc->memcg, oom_evaluate_task, oc); in select_bad_process()
378 if (oom_evaluate_task(p, oc)) in select_bad_process()
386 struct oom_control *oc = arg; in dump_task() local
393 if (!is_memcg_oom(oc) && !oom_cpuset_eligible(p, oc)) in dump_task()
418 * @oc: pointer to struct oom_control
426 static void dump_tasks(struct oom_control *oc) in dump_tasks() argument
431 if (is_memcg_oom(oc)) in dump_tasks()
432 mem_cgroup_scan_tasks(oc->memcg, dump_task, oc); in dump_tasks()
438 dump_task(p, oc); in dump_tasks()
443 static void dump_oom_summary(struct oom_control *oc, struct task_struct *victim) in dump_oom_summary() argument
447 oom_constraint_text[oc->constraint], in dump_oom_summary()
448 nodemask_pr_args(oc->nodemask)); in dump_oom_summary()
450 mem_cgroup_print_oom_context(oc->memcg, victim); in dump_oom_summary()
455 static void dump_header(struct oom_control *oc, struct task_struct *p) in dump_header() argument
458 current->comm, oc->gfp_mask, &oc->gfp_mask, oc->order, in dump_header()
460 if (!IS_ENABLED(CONFIG_COMPACTION) && oc->order) in dump_header()
464 if (is_memcg_oom(oc)) in dump_header()
465 mem_cgroup_print_oom_meminfo(oc->memcg); in dump_header()
467 show_mem(SHOW_MEM_FILTER_NODES, oc->nodemask); in dump_header()
472 dump_tasks(oc); in dump_header()
474 dump_oom_summary(oc, p); in dump_header()
957 static void oom_kill_process(struct oom_control *oc, const char *message) in oom_kill_process() argument
959 struct task_struct *victim = oc->chosen; in oom_kill_process()
980 dump_header(oc, victim); in oom_kill_process()
987 oom_group = mem_cgroup_get_oom_group(victim, oc->memcg); in oom_kill_process()
1005 static void check_panic_on_oom(struct oom_control *oc) in check_panic_on_oom() argument
1015 if (oc->constraint != CONSTRAINT_NONE) in check_panic_on_oom()
1019 if (is_sysrq_oom(oc)) in check_panic_on_oom()
1021 dump_header(oc, NULL); in check_panic_on_oom()
1042 * @oc: pointer to struct oom_control
1049 bool out_of_memory(struct oom_control *oc) in out_of_memory() argument
1056 if (!is_memcg_oom(oc)) { in out_of_memory()
1081 if (oc->gfp_mask && !(oc->gfp_mask & __GFP_FS) && !is_memcg_oom(oc)) in out_of_memory()
1088 oc->constraint = constrained_alloc(oc); in out_of_memory()
1089 if (oc->constraint != CONSTRAINT_MEMORY_POLICY) in out_of_memory()
1090 oc->nodemask = NULL; in out_of_memory()
1091 check_panic_on_oom(oc); in out_of_memory()
1093 if (!is_memcg_oom(oc) && sysctl_oom_kill_allocating_task && in out_of_memory()
1095 oom_cpuset_eligible(current, oc) && in out_of_memory()
1098 oc->chosen = current; in out_of_memory()
1099 oom_kill_process(oc, "Out of memory (oom_kill_allocating_task)"); in out_of_memory()
1103 select_bad_process(oc); in out_of_memory()
1105 if (!oc->chosen) { in out_of_memory()
1106 dump_header(oc, NULL); in out_of_memory()
1113 if (!is_sysrq_oom(oc) && !is_memcg_oom(oc)) in out_of_memory()
1116 if (oc->chosen && oc->chosen != (void *)-1UL) in out_of_memory()
1117 oom_kill_process(oc, !is_memcg_oom(oc) ? "Out of memory" : in out_of_memory()
1119 return !!oc->chosen; in out_of_memory()
1129 struct oom_control oc = { in pagefault_out_of_memory() local
1142 out_of_memory(&oc); in pagefault_out_of_memory()