102 struct task_struct *find_lock_task_mm(struct task_struct *p)  in find_lock_task_mm()  argument
108 	for_each_thread(p, t) {  in find_lock_task_mm()
131 static bool oom_unkillable_task(struct task_struct *p,  in oom_unkillable_task()  argument
134 	if (is_global_init(p))  in oom_unkillable_task()
136 	if (p->flags & PF_KTHREAD)  in oom_unkillable_task()
140 	if (memcg && !task_in_mem_cgroup(p, memcg))  in oom_unkillable_task()
144 	if (!has_intersects_mems_allowed(p, nodemask))  in oom_unkillable_task()
159 unsigned long oom_badness(struct task_struct *p, struct mem_cgroup *memcg,  in oom_badness()  argument
165 	if (oom_unkillable_task(p, memcg, nodemask))  in oom_badness()
168 	p = find_lock_task_mm(p);  in oom_badness()
169 	if (!p)  in oom_badness()
172 	adj = (long)p->signal->oom_score_adj;  in oom_badness()
174 		task_unlock(p);  in oom_badness()
182 	points = get_mm_rss(p->mm) + get_mm_counter(p->mm, MM_SWAPENTS) +  in oom_badness()
183 		atomic_long_read(&p->mm->nr_ptes) + mm_nr_pmds(p->mm);  in oom_badness()
184 	task_unlock(p);  in oom_badness()
190 	if (has_capability_noaudit(p, CAP_SYS_ADMIN))  in oom_badness()
303 	struct task_struct *g, *p;  in select_bad_process()  local
308 	for_each_process_thread(g, p) {  in select_bad_process()
311 		switch (oom_scan_process_thread(oc, p, totalpages)) {  in select_bad_process()
313 			chosen = p;  in select_bad_process()
324 		points = oom_badness(p, NULL, oc->nodemask, totalpages);  in select_bad_process()
331 		chosen = p;  in select_bad_process()
355 	struct task_struct *p;  in dump_tasks()  local
360 	for_each_process(p) {  in dump_tasks()
361 		if (oom_unkillable_task(p, memcg, nodemask))  in dump_tasks()
364 		task = find_lock_task_mm(p);  in dump_tasks()
386 static void dump_header(struct oom_control *oc, struct task_struct *p,  in dump_header()  argument
396 		mem_cgroup_print_oom_info(memcg, p);  in dump_header()
492 static bool process_shares_mm(struct task_struct *p, struct mm_struct *mm)  in process_shares_mm()  argument
496 	for_each_thread(p, t) {  in process_shares_mm()
509 void oom_kill_process(struct oom_control *oc, struct task_struct *p,  in oom_kill_process()  argument
513 	struct task_struct *victim = p;  in oom_kill_process()
525 	task_lock(p);  in oom_kill_process()
526 	if (p->mm && task_will_free_mem(p)) {  in oom_kill_process()
527 		mark_oom_victim(p);  in oom_kill_process()
528 		task_unlock(p);  in oom_kill_process()
529 		put_task_struct(p);  in oom_kill_process()
532 	task_unlock(p);  in oom_kill_process()
535 		dump_header(oc, p, memcg);  in oom_kill_process()
538 		message, task_pid_nr(p), p->comm, points);  in oom_kill_process()
547 	for_each_thread(p, t) {  in oom_kill_process()
551 			if (process_shares_mm(child, p->mm))  in oom_kill_process()
568 	p = find_lock_task_mm(victim);  in oom_kill_process()
569 	if (!p) {  in oom_kill_process()
572 	} else if (victim != p) {  in oom_kill_process()
573 		get_task_struct(p);  in oom_kill_process()
575 		victim = p;  in oom_kill_process()
604 	for_each_process(p) {  in oom_kill_process()
605 		if (!process_shares_mm(p, mm))  in oom_kill_process()
607 		if (same_thread_group(p, victim))  in oom_kill_process()
609 		if (unlikely(p->flags & PF_KTHREAD))  in oom_kill_process()
611 		if (is_global_init(p))  in oom_kill_process()
613 		if (p->signal->oom_score_adj == OOM_SCORE_ADJ_MIN)  in oom_kill_process()
616 		do_send_sig_info(SIGKILL, SEND_SIG_FORCED, p, true);  in oom_kill_process()
675 	struct task_struct *p;  in out_of_memory()  local
721 	p = select_bad_process(oc, &points, totalpages);  in out_of_memory()
723 	if (!p && !is_sysrq_oom(oc)) {  in out_of_memory()
727 	if (p && p != (void *)-1UL) {  in out_of_memory()
728 		oom_kill_process(oc, p, points, totalpages, NULL,  in out_of_memory()