125 static inline bool is_sysrq_oom(struct oom_control *oc)  in is_sysrq_oom()  argument
127 	return oc->order == -1;  in is_sysrq_oom()
208 static enum oom_constraint constrained_alloc(struct oom_control *oc,  in constrained_alloc()  argument
213 	enum zone_type high_zoneidx = gfp_zone(oc->gfp_mask);  in constrained_alloc()
220 	if (!oc->zonelist)  in constrained_alloc()
227 	if (oc->gfp_mask & __GFP_THISNODE)  in constrained_alloc()
235 	if (oc->nodemask &&  in constrained_alloc()
236 	    !nodes_subset(node_states[N_MEMORY], *oc->nodemask)) {  in constrained_alloc()
238 		for_each_node_mask(nid, *oc->nodemask)  in constrained_alloc()
244 	for_each_zone_zonelist_nodemask(zone, z, oc->zonelist,  in constrained_alloc()
245 			high_zoneidx, oc->nodemask)  in constrained_alloc()
246 		if (!cpuset_zone_allowed(zone, oc->gfp_mask))  in constrained_alloc()
258 static enum oom_constraint constrained_alloc(struct oom_control *oc,  in constrained_alloc()  argument
266 enum oom_scan_t oom_scan_process_thread(struct oom_control *oc,  in oom_scan_process_thread()  argument
269 	if (oom_unkillable_task(task, NULL, oc->nodemask))  in oom_scan_process_thread()
277 		if (!is_sysrq_oom(oc))  in oom_scan_process_thread()
290 	if (task_will_free_mem(task) && !is_sysrq_oom(oc))  in oom_scan_process_thread()
300 static struct task_struct *select_bad_process(struct oom_control *oc,  in select_bad_process()  argument
311 		switch (oom_scan_process_thread(oc, p, totalpages)) {  in select_bad_process()
324 		points = oom_badness(p, NULL, oc->nodemask, totalpages);  in select_bad_process()
386 static void dump_header(struct oom_control *oc, struct task_struct *p,  in dump_header()  argument
391 		current->comm, oc->gfp_mask, oc->order,  in dump_header()
400 		dump_tasks(memcg, oc->nodemask);  in dump_header()
509 void oom_kill_process(struct oom_control *oc, struct task_struct *p,  in oom_kill_process()  argument
535 		dump_header(oc, p, memcg);  in oom_kill_process()
556 			child_points = oom_badness(child, memcg, oc->nodemask,  in oom_kill_process()
628 void check_panic_on_oom(struct oom_control *oc, enum oom_constraint constraint,  in check_panic_on_oom()  argument
643 	if (is_sysrq_oom(oc))  in check_panic_on_oom()
645 	dump_header(oc, NULL, memcg);  in check_panic_on_oom()
673 bool out_of_memory(struct oom_control *oc)  in out_of_memory()  argument
707 	constraint = constrained_alloc(oc, &totalpages);  in out_of_memory()
709 		oc->nodemask = NULL;  in out_of_memory()
710 	check_panic_on_oom(oc, constraint, NULL);  in out_of_memory()
713 	    !oom_unkillable_task(current, NULL, oc->nodemask) &&  in out_of_memory()
716 		oom_kill_process(oc, current, 0, totalpages, NULL,  in out_of_memory()
721 	p = select_bad_process(oc, &points, totalpages);  in out_of_memory()
723 	if (!p && !is_sysrq_oom(oc)) {  in out_of_memory()
724 		dump_header(oc, NULL, NULL);  in out_of_memory()
728 		oom_kill_process(oc, p, points, totalpages, NULL,  in out_of_memory()
746 	struct oom_control oc = {  in pagefault_out_of_memory()  local
759 	if (!out_of_memory(&oc)) {  in pagefault_out_of_memory()