391 void reset_isolation_suitable(pg_data_t *pgdat)  in reset_isolation_suitable()  argument
396 		struct zone *zone = &pgdat->node_zones[zoneid];  in reset_isolation_suitable()
797 static bool too_many_isolated(pg_data_t *pgdat)  in too_many_isolated()  argument
801 	inactive = node_page_state(pgdat, NR_INACTIVE_FILE) +  in too_many_isolated()
802 			node_page_state(pgdat, NR_INACTIVE_ANON);  in too_many_isolated()
803 	active = node_page_state(pgdat, NR_ACTIVE_FILE) +  in too_many_isolated()
804 			node_page_state(pgdat, NR_ACTIVE_ANON);  in too_many_isolated()
805 	isolated = node_page_state(pgdat, NR_ISOLATED_FILE) +  in too_many_isolated()
806 			node_page_state(pgdat, NR_ISOLATED_ANON);  in too_many_isolated()
833 	pg_data_t *pgdat = cc->zone->zone_pgdat;  in isolate_migratepages_block()  local
849 	while (unlikely(too_many_isolated(pgdat))) {  in isolate_migratepages_block()
902 		    && compact_unlock_should_abort(&pgdat->lru_lock,  in isolate_migratepages_block()
976 					spin_unlock_irqrestore(&pgdat->lru_lock,  in isolate_migratepages_block()
1006 			locked = compact_lock_irqsave(&pgdat->lru_lock,  in isolate_migratepages_block()
1031 		lruvec = mem_cgroup_page_lruvec(page, pgdat);  in isolate_migratepages_block()
1076 				spin_unlock_irqrestore(&pgdat->lru_lock, flags);  in isolate_migratepages_block()
1103 		spin_unlock_irqrestore(&pgdat->lru_lock, flags);  in isolate_migratepages_block()
1909 static bool kswapd_is_running(pg_data_t *pgdat)  in kswapd_is_running()  argument
1911 	return pgdat->kswapd && (pgdat->kswapd->state == TASK_RUNNING);  in kswapd_is_running()
1948 static unsigned int fragmentation_score_node(pg_data_t *pgdat)  in fragmentation_score_node()  argument
1956 		zone = &pgdat->node_zones[zoneid];  in fragmentation_score_node()
1963 static unsigned int fragmentation_score_wmark(pg_data_t *pgdat, bool low)  in fragmentation_score_wmark()  argument
1976 static bool should_proactive_compact_node(pg_data_t *pgdat)  in should_proactive_compact_node()  argument
1980 	if (!sysctl_compaction_proactiveness || kswapd_is_running(pgdat))  in should_proactive_compact_node()
1983 	wmark_high = fragmentation_score_wmark(pgdat, false);  in should_proactive_compact_node()
1984 	return fragmentation_score_node(pgdat) > wmark_high;  in should_proactive_compact_node()
2016 		pg_data_t *pgdat;  in __compact_finished()  local
2018 		pgdat = cc->zone->zone_pgdat;  in __compact_finished()
2019 		if (kswapd_is_running(pgdat))  in __compact_finished()
2023 		wmark_low = fragmentation_score_wmark(pgdat, true);  in __compact_finished()
2583 static void proactive_compact_node(pg_data_t *pgdat)  in proactive_compact_node()  argument
2597 		zone = &pgdat->node_zones[zoneid];  in proactive_compact_node()
2613 	pg_data_t *pgdat = NODE_DATA(nid);  in compact_node()  local
2627 		zone = &pgdat->node_zones[zoneid];  in compact_node()
2673 			pg_data_t *pgdat = NODE_DATA(nid);  in compaction_proactiveness_sysctl_handler()  local
2675 			if (pgdat->proactive_compact_trigger)  in compaction_proactiveness_sysctl_handler()
2678 			pgdat->proactive_compact_trigger = true;  in compaction_proactiveness_sysctl_handler()
2679 			wake_up_interruptible(&pgdat->kcompactd_wait);  in compaction_proactiveness_sysctl_handler()
2728 static inline bool kcompactd_work_requested(pg_data_t *pgdat)  in kcompactd_work_requested()  argument
2730 	return pgdat->kcompactd_max_order > 0 || kthread_should_stop() ||  in kcompactd_work_requested()
2731 		pgdat->proactive_compact_trigger;  in kcompactd_work_requested()
2734 static bool kcompactd_node_suitable(pg_data_t *pgdat)  in kcompactd_node_suitable()  argument
2738 	enum zone_type highest_zoneidx = pgdat->kcompactd_highest_zoneidx;  in kcompactd_node_suitable()
2741 		zone = &pgdat->node_zones[zoneid];  in kcompactd_node_suitable()
2746 		if (compaction_suitable(zone, pgdat->kcompactd_max_order, 0,  in kcompactd_node_suitable()
2754 static void kcompactd_do_work(pg_data_t *pgdat)  in kcompactd_do_work()  argument
2763 		.order = pgdat->kcompactd_max_order,  in kcompactd_do_work()
2764 		.search_order = pgdat->kcompactd_max_order,  in kcompactd_do_work()
2765 		.highest_zoneidx = pgdat->kcompactd_highest_zoneidx,  in kcompactd_do_work()
2770 	trace_mm_compaction_kcompactd_wake(pgdat->node_id, cc.order,  in kcompactd_do_work()
2777 		zone = &pgdat->node_zones[zoneid];  in kcompactd_do_work()
2826 	if (pgdat->kcompactd_max_order <= cc.order)  in kcompactd_do_work()
2827 		pgdat->kcompactd_max_order = 0;  in kcompactd_do_work()
2828 	if (pgdat->kcompactd_highest_zoneidx >= cc.highest_zoneidx)  in kcompactd_do_work()
2829 		pgdat->kcompactd_highest_zoneidx = pgdat->nr_zones - 1;  in kcompactd_do_work()
2832 void wakeup_kcompactd(pg_data_t *pgdat, int order, int highest_zoneidx)  in wakeup_kcompactd()  argument
2837 	if (pgdat->kcompactd_max_order < order)  in wakeup_kcompactd()
2838 		pgdat->kcompactd_max_order = order;  in wakeup_kcompactd()
2840 	if (pgdat->kcompactd_highest_zoneidx > highest_zoneidx)  in wakeup_kcompactd()
2841 		pgdat->kcompactd_highest_zoneidx = highest_zoneidx;  in wakeup_kcompactd()
2847 	if (!wq_has_sleeper(&pgdat->kcompactd_wait))  in wakeup_kcompactd()
2850 	if (!kcompactd_node_suitable(pgdat))  in wakeup_kcompactd()
2853 	trace_mm_compaction_wakeup_kcompactd(pgdat->node_id, order,  in wakeup_kcompactd()
2855 	wake_up_interruptible(&pgdat->kcompactd_wait);  in wakeup_kcompactd()
2864 	pg_data_t *pgdat = (pg_data_t*)p;  in kcompactd()  local
2868 	const struct cpumask *cpumask = cpumask_of_node(pgdat->node_id);  in kcompactd()
2875 	pgdat->kcompactd_max_order = 0;  in kcompactd()
2876 	pgdat->kcompactd_highest_zoneidx = pgdat->nr_zones - 1;  in kcompactd()
2885 		trace_mm_compaction_kcompactd_sleep(pgdat->node_id);  in kcompactd()
2886 		if (wait_event_freezable_timeout(pgdat->kcompactd_wait,  in kcompactd()
2887 			kcompactd_work_requested(pgdat), timeout) &&  in kcompactd()
2888 			!pgdat->proactive_compact_trigger) {  in kcompactd()
2891 			kcompactd_do_work(pgdat);  in kcompactd()
2897 		if (should_proactive_compact_node(pgdat)) {  in kcompactd()
2909 				!pgdat->proactive_compact_trigger) {  in kcompactd()
2914 			prev_score = fragmentation_score_node(pgdat);  in kcompactd()
2915 			proactive_compact_node(pgdat);  in kcompactd()
2916 			score = fragmentation_score_node(pgdat);  in kcompactd()
2924 		if (pgdat->proactive_compact_trigger)  in kcompactd()
2925 			pgdat->proactive_compact_trigger = false;  in kcompactd()
2937 	pg_data_t *pgdat = NODE_DATA(nid);  in kcompactd_run()  local
2940 	if (pgdat->kcompactd)  in kcompactd_run()
2943 	pgdat->kcompactd = kthread_run(kcompactd, pgdat, "kcompactd%d", nid);  in kcompactd_run()
2944 	if (IS_ERR(pgdat->kcompactd)) {  in kcompactd_run()
2946 		ret = PTR_ERR(pgdat->kcompactd);  in kcompactd_run()
2947 		pgdat->kcompactd = NULL;  in kcompactd_run()
2977 		pg_data_t *pgdat = NODE_DATA(nid);  in kcompactd_cpu_online()  local
2980 		mask = cpumask_of_node(pgdat->node_id);  in kcompactd_cpu_online()
2984 			set_cpus_allowed_ptr(pgdat->kcompactd, mask);  in kcompactd_cpu_online()