383 void reset_isolation_suitable(pg_data_t *pgdat)  in reset_isolation_suitable()  argument
388 		struct zone *zone = &pgdat->node_zones[zoneid];  in reset_isolation_suitable()
762 static bool too_many_isolated(pg_data_t *pgdat)  in too_many_isolated()  argument
766 	inactive = node_page_state(pgdat, NR_INACTIVE_FILE) +  in too_many_isolated()
767 			node_page_state(pgdat, NR_INACTIVE_ANON);  in too_many_isolated()
768 	active = node_page_state(pgdat, NR_ACTIVE_FILE) +  in too_many_isolated()
769 			node_page_state(pgdat, NR_ACTIVE_ANON);  in too_many_isolated()
770 	isolated = node_page_state(pgdat, NR_ISOLATED_FILE) +  in too_many_isolated()
771 			node_page_state(pgdat, NR_ISOLATED_ANON);  in too_many_isolated()
797 	pg_data_t *pgdat = cc->zone->zone_pgdat;  in isolate_migratepages_block()  local
816 	while (unlikely(too_many_isolated(pgdat))) {  in isolate_migratepages_block()
1948 static bool kswapd_is_running(pg_data_t *pgdat)  in kswapd_is_running()  argument
1950 	return pgdat->kswapd && task_is_running(pgdat->kswapd);  in kswapd_is_running()
1987 static unsigned int fragmentation_score_node(pg_data_t *pgdat)  in fragmentation_score_node()  argument
1995 		zone = &pgdat->node_zones[zoneid];  in fragmentation_score_node()
2002 static unsigned int fragmentation_score_wmark(pg_data_t *pgdat, bool low)  in fragmentation_score_wmark()  argument
2015 static bool should_proactive_compact_node(pg_data_t *pgdat)  in should_proactive_compact_node()  argument
2019 	if (!sysctl_compaction_proactiveness || kswapd_is_running(pgdat))  in should_proactive_compact_node()
2022 	wmark_high = fragmentation_score_wmark(pgdat, false);  in should_proactive_compact_node()
2023 	return fragmentation_score_node(pgdat) > wmark_high;  in should_proactive_compact_node()
2054 		pg_data_t *pgdat;  in __compact_finished()  local
2056 		pgdat = cc->zone->zone_pgdat;  in __compact_finished()
2057 		if (kswapd_is_running(pgdat))  in __compact_finished()
2061 		wmark_low = fragmentation_score_wmark(pgdat, true);  in __compact_finished()
2627 static void proactive_compact_node(pg_data_t *pgdat)  in proactive_compact_node()  argument
2641 		zone = &pgdat->node_zones[zoneid];  in proactive_compact_node()
2657 	pg_data_t *pgdat = NODE_DATA(nid);  in compact_node()  local
2671 		zone = &pgdat->node_zones[zoneid];  in compact_node()
2714 			pg_data_t *pgdat = NODE_DATA(nid);  in compaction_proactiveness_sysctl_handler()  local
2716 			if (pgdat->proactive_compact_trigger)  in compaction_proactiveness_sysctl_handler()
2719 			pgdat->proactive_compact_trigger = true;  in compaction_proactiveness_sysctl_handler()
2720 			wake_up_interruptible(&pgdat->kcompactd_wait);  in compaction_proactiveness_sysctl_handler()
2769 static inline bool kcompactd_work_requested(pg_data_t *pgdat)  in kcompactd_work_requested()  argument
2771 	return pgdat->kcompactd_max_order > 0 || kthread_should_stop() ||  in kcompactd_work_requested()
2772 		pgdat->proactive_compact_trigger;  in kcompactd_work_requested()
2775 static bool kcompactd_node_suitable(pg_data_t *pgdat)  in kcompactd_node_suitable()  argument
2779 	enum zone_type highest_zoneidx = pgdat->kcompactd_highest_zoneidx;  in kcompactd_node_suitable()
2782 		zone = &pgdat->node_zones[zoneid];  in kcompactd_node_suitable()
2787 		if (compaction_suitable(zone, pgdat->kcompactd_max_order, 0,  in kcompactd_node_suitable()
2795 static void kcompactd_do_work(pg_data_t *pgdat)  in kcompactd_do_work()  argument
2804 		.order = pgdat->kcompactd_max_order,  in kcompactd_do_work()
2805 		.search_order = pgdat->kcompactd_max_order,  in kcompactd_do_work()
2806 		.highest_zoneidx = pgdat->kcompactd_highest_zoneidx,  in kcompactd_do_work()
2811 	trace_mm_compaction_kcompactd_wake(pgdat->node_id, cc.order,  in kcompactd_do_work()
2818 		zone = &pgdat->node_zones[zoneid];  in kcompactd_do_work()
2867 	if (pgdat->kcompactd_max_order <= cc.order)  in kcompactd_do_work()
2868 		pgdat->kcompactd_max_order = 0;  in kcompactd_do_work()
2869 	if (pgdat->kcompactd_highest_zoneidx >= cc.highest_zoneidx)  in kcompactd_do_work()
2870 		pgdat->kcompactd_highest_zoneidx = pgdat->nr_zones - 1;  in kcompactd_do_work()
2873 void wakeup_kcompactd(pg_data_t *pgdat, int order, int highest_zoneidx)  in wakeup_kcompactd()  argument
2878 	if (pgdat->kcompactd_max_order < order)  in wakeup_kcompactd()
2879 		pgdat->kcompactd_max_order = order;  in wakeup_kcompactd()
2881 	if (pgdat->kcompactd_highest_zoneidx > highest_zoneidx)  in wakeup_kcompactd()
2882 		pgdat->kcompactd_highest_zoneidx = highest_zoneidx;  in wakeup_kcompactd()
2888 	if (!wq_has_sleeper(&pgdat->kcompactd_wait))  in wakeup_kcompactd()
2891 	if (!kcompactd_node_suitable(pgdat))  in wakeup_kcompactd()
2894 	trace_mm_compaction_wakeup_kcompactd(pgdat->node_id, order,  in wakeup_kcompactd()
2896 	wake_up_interruptible(&pgdat->kcompactd_wait);  in wakeup_kcompactd()
2905 	pg_data_t *pgdat = (pg_data_t *)p;  in kcompactd()  local
2910 	const struct cpumask *cpumask = cpumask_of_node(pgdat->node_id);  in kcompactd()
2917 	pgdat->kcompactd_max_order = 0;  in kcompactd()
2918 	pgdat->kcompactd_highest_zoneidx = pgdat->nr_zones - 1;  in kcompactd()
2929 		trace_mm_compaction_kcompactd_sleep(pgdat->node_id);  in kcompactd()
2930 		if (wait_event_freezable_timeout(pgdat->kcompactd_wait,  in kcompactd()
2931 			kcompactd_work_requested(pgdat), timeout) &&  in kcompactd()
2932 			!pgdat->proactive_compact_trigger) {  in kcompactd()
2935 			kcompactd_do_work(pgdat);  in kcompactd()
2953 		if (should_proactive_compact_node(pgdat)) {  in kcompactd()
2956 			prev_score = fragmentation_score_node(pgdat);  in kcompactd()
2957 			proactive_compact_node(pgdat);  in kcompactd()
2958 			score = fragmentation_score_node(pgdat);  in kcompactd()
2967 		if (unlikely(pgdat->proactive_compact_trigger))  in kcompactd()
2968 			pgdat->proactive_compact_trigger = false;  in kcompactd()
2980 	pg_data_t *pgdat = NODE_DATA(nid);  in kcompactd_run()  local
2983 	if (pgdat->kcompactd)  in kcompactd_run()
2986 	pgdat->kcompactd = kthread_run(kcompactd, pgdat, "kcompactd%d", nid);  in kcompactd_run()
2987 	if (IS_ERR(pgdat->kcompactd)) {  in kcompactd_run()
2989 		ret = PTR_ERR(pgdat->kcompactd);  in kcompactd_run()
2990 		pgdat->kcompactd = NULL;  in kcompactd_run()
3020 		pg_data_t *pgdat = NODE_DATA(nid);  in kcompactd_cpu_online()  local
3023 		mask = cpumask_of_node(pgdat->node_id);  in kcompactd_cpu_online()
3027 			set_cpus_allowed_ptr(pgdat->kcompactd, mask);  in kcompactd_cpu_online()