101 struct task_struct *find_lock_task_mm(struct task_struct *p)  in find_lock_task_mm()  argument
107 	for_each_thread(p, t) {  in find_lock_task_mm()
121 static bool oom_unkillable_task(struct task_struct *p,  in oom_unkillable_task()  argument
124 	if (is_global_init(p))  in oom_unkillable_task()
126 	if (p->flags & PF_KTHREAD)  in oom_unkillable_task()
130 	if (memcg && !task_in_mem_cgroup(p, memcg))  in oom_unkillable_task()
134 	if (!has_intersects_mems_allowed(p, nodemask))  in oom_unkillable_task()
149 unsigned long oom_badness(struct task_struct *p, struct mem_cgroup *memcg,  in oom_badness()  argument
155 	if (oom_unkillable_task(p, memcg, nodemask))  in oom_badness()
158 	p = find_lock_task_mm(p);  in oom_badness()
159 	if (!p)  in oom_badness()
162 	adj = (long)p->signal->oom_score_adj;  in oom_badness()
164 		task_unlock(p);  in oom_badness()
172 	points = get_mm_rss(p->mm) + get_mm_counter(p->mm, MM_SWAPENTS) +  in oom_badness()
173 		atomic_long_read(&p->mm->nr_ptes) + mm_nr_pmds(p->mm);  in oom_badness()
174 	task_unlock(p);  in oom_badness()
180 	if (has_capability_noaudit(p, CAP_SYS_ADMIN))  in oom_badness()
298 	struct task_struct *g, *p;  in select_bad_process()  local
303 	for_each_process_thread(g, p) {  in select_bad_process()
306 		switch (oom_scan_process_thread(p, totalpages, nodemask,  in select_bad_process()
309 			chosen = p;  in select_bad_process()
320 		points = oom_badness(p, NULL, nodemask, totalpages);  in select_bad_process()
327 		chosen = p;  in select_bad_process()
351 	struct task_struct *p;  in dump_tasks()  local
356 	for_each_process(p) {  in dump_tasks()
357 		if (oom_unkillable_task(p, memcg, nodemask))  in dump_tasks()
360 		task = find_lock_task_mm(p);  in dump_tasks()
382 static void dump_header(struct task_struct *p, gfp_t gfp_mask, int order,  in dump_header()  argument
394 		mem_cgroup_print_oom_info(memcg, p);  in dump_header()
501 void oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,  in oom_kill_process()  argument
506 	struct task_struct *victim = p;  in oom_kill_process()
518 	task_lock(p);  in oom_kill_process()
519 	if (p->mm && task_will_free_mem(p)) {  in oom_kill_process()
520 		mark_tsk_oom_victim(p);  in oom_kill_process()
521 		task_unlock(p);  in oom_kill_process()
522 		put_task_struct(p);  in oom_kill_process()
525 	task_unlock(p);  in oom_kill_process()
528 		dump_header(p, gfp_mask, order, memcg, nodemask);  in oom_kill_process()
530 	task_lock(p);  in oom_kill_process()
532 		message, task_pid_nr(p), p->comm, points);  in oom_kill_process()
533 	task_unlock(p);  in oom_kill_process()
542 	for_each_thread(p, t) {  in oom_kill_process()
546 			if (child->mm == p->mm)  in oom_kill_process()
563 	p = find_lock_task_mm(victim);  in oom_kill_process()
564 	if (!p) {  in oom_kill_process()
567 	} else if (victim != p) {  in oom_kill_process()
568 		get_task_struct(p);  in oom_kill_process()
570 		victim = p;  in oom_kill_process()
592 	for_each_process(p)  in oom_kill_process()
593 		if (p->mm == mm && !same_thread_group(p, victim) &&  in oom_kill_process()
594 		    !(p->flags & PF_KTHREAD)) {  in oom_kill_process()
595 			if (p->signal->oom_score_adj == OOM_SCORE_ADJ_MIN)  in oom_kill_process()
598 			task_lock(p);	/* Protect ->comm from prctl() */  in oom_kill_process()
600 				task_pid_nr(p), p->comm);  in oom_kill_process()
601 			task_unlock(p);  in oom_kill_process()
602 			do_send_sig_info(SIGKILL, SEND_SIG_FORCED, p, true);  in oom_kill_process()
711 	struct task_struct *p;  in __out_of_memory()  local
756 	p = select_bad_process(&points, totalpages, mpol_mask, force_kill);  in __out_of_memory()
758 	if (!p) {  in __out_of_memory()
762 	if (p != (void *)-1UL) {  in __out_of_memory()
763 		oom_kill_process(p, gfp_mask, order, points, totalpages, NULL,  in __out_of_memory()