428 void reset_isolation_suitable(pg_data_t *pgdat)  in reset_isolation_suitable()  argument
433 		struct zone *zone = &pgdat->node_zones[zoneid];  in reset_isolation_suitable()
790 	pg_data_t *pgdat = cc->zone->zone_pgdat;  in too_many_isolated()  local
795 	inactive = node_page_state(pgdat, NR_INACTIVE_FILE) +  in too_many_isolated()
796 			node_page_state(pgdat, NR_INACTIVE_ANON);  in too_many_isolated()
797 	active = node_page_state(pgdat, NR_ACTIVE_FILE) +  in too_many_isolated()
798 			node_page_state(pgdat, NR_ACTIVE_ANON);  in too_many_isolated()
799 	isolated = node_page_state(pgdat, NR_ISOLATED_FILE) +  in too_many_isolated()
800 			node_page_state(pgdat, NR_ISOLATED_ANON);  in too_many_isolated()
815 		wake_throttle_isolated(pgdat);  in too_many_isolated()
841 	pg_data_t *pgdat = cc->zone->zone_pgdat;  in isolate_migratepages_block()  local
871 		reclaim_throttle(pgdat, VMSCAN_THROTTLE_ISOLATED);  in isolate_migratepages_block()
2083 static bool kswapd_is_running(pg_data_t *pgdat)  in kswapd_is_running()  argument
2087 	pgdat_kswapd_lock(pgdat);  in kswapd_is_running()
2088 	running = pgdat->kswapd && task_is_running(pgdat->kswapd);  in kswapd_is_running()
2089 	pgdat_kswapd_unlock(pgdat);  in kswapd_is_running()
2128 static unsigned int fragmentation_score_node(pg_data_t *pgdat)  in fragmentation_score_node()  argument
2136 		zone = &pgdat->node_zones[zoneid];  in fragmentation_score_node()
2158 static bool should_proactive_compact_node(pg_data_t *pgdat)  in should_proactive_compact_node()  argument
2162 	if (!sysctl_compaction_proactiveness || kswapd_is_running(pgdat))  in should_proactive_compact_node()
2166 	return fragmentation_score_node(pgdat) > wmark_high;  in should_proactive_compact_node()
2197 		pg_data_t *pgdat;  in __compact_finished()  local
2199 		pgdat = cc->zone->zone_pgdat;  in __compact_finished()
2200 		if (kswapd_is_running(pgdat))  in __compact_finished()
2760 static void proactive_compact_node(pg_data_t *pgdat)  in proactive_compact_node()  argument
2774 		zone = &pgdat->node_zones[zoneid];  in proactive_compact_node()
2792 	pg_data_t *pgdat = NODE_DATA(nid);  in compact_node()  local
2806 		zone = &pgdat->node_zones[zoneid];  in compact_node()
2839 			pg_data_t *pgdat = NODE_DATA(nid);  in compaction_proactiveness_sysctl_handler()  local
2841 			if (pgdat->proactive_compact_trigger)  in compaction_proactiveness_sysctl_handler()
2844 			pgdat->proactive_compact_trigger = true;  in compaction_proactiveness_sysctl_handler()
2845 			trace_mm_compaction_wakeup_kcompactd(pgdat->node_id, -1,  in compaction_proactiveness_sysctl_handler()
2846 							     pgdat->nr_zones - 1);  in compaction_proactiveness_sysctl_handler()
2847 			wake_up_interruptible(&pgdat->kcompactd_wait);  in compaction_proactiveness_sysctl_handler()
2905 static inline bool kcompactd_work_requested(pg_data_t *pgdat)  in kcompactd_work_requested()  argument
2907 	return pgdat->kcompactd_max_order > 0 || kthread_should_stop() ||  in kcompactd_work_requested()
2908 		pgdat->proactive_compact_trigger;  in kcompactd_work_requested()
2911 static bool kcompactd_node_suitable(pg_data_t *pgdat)  in kcompactd_node_suitable()  argument
2915 	enum zone_type highest_zoneidx = pgdat->kcompactd_highest_zoneidx;  in kcompactd_node_suitable()
2918 		zone = &pgdat->node_zones[zoneid];  in kcompactd_node_suitable()
2924 		if (zone_watermark_ok(zone, pgdat->kcompactd_max_order,  in kcompactd_node_suitable()
2929 		if (compaction_suitable(zone, pgdat->kcompactd_max_order,  in kcompactd_node_suitable()
2937 static void kcompactd_do_work(pg_data_t *pgdat)  in kcompactd_do_work()  argument
2946 		.order = pgdat->kcompactd_max_order,  in kcompactd_do_work()
2947 		.search_order = pgdat->kcompactd_max_order,  in kcompactd_do_work()
2948 		.highest_zoneidx = pgdat->kcompactd_highest_zoneidx,  in kcompactd_do_work()
2953 	trace_mm_compaction_kcompactd_wake(pgdat->node_id, cc.order,  in kcompactd_do_work()
2960 		zone = &pgdat->node_zones[zoneid];  in kcompactd_do_work()
3010 	if (pgdat->kcompactd_max_order <= cc.order)  in kcompactd_do_work()
3011 		pgdat->kcompactd_max_order = 0;  in kcompactd_do_work()
3012 	if (pgdat->kcompactd_highest_zoneidx >= cc.highest_zoneidx)  in kcompactd_do_work()
3013 		pgdat->kcompactd_highest_zoneidx = pgdat->nr_zones - 1;  in kcompactd_do_work()
3016 void wakeup_kcompactd(pg_data_t *pgdat, int order, int highest_zoneidx)  in wakeup_kcompactd()  argument
3021 	if (pgdat->kcompactd_max_order < order)  in wakeup_kcompactd()
3022 		pgdat->kcompactd_max_order = order;  in wakeup_kcompactd()
3024 	if (pgdat->kcompactd_highest_zoneidx > highest_zoneidx)  in wakeup_kcompactd()
3025 		pgdat->kcompactd_highest_zoneidx = highest_zoneidx;  in wakeup_kcompactd()
3031 	if (!wq_has_sleeper(&pgdat->kcompactd_wait))  in wakeup_kcompactd()
3034 	if (!kcompactd_node_suitable(pgdat))  in wakeup_kcompactd()
3037 	trace_mm_compaction_wakeup_kcompactd(pgdat->node_id, order,  in wakeup_kcompactd()
3039 	wake_up_interruptible(&pgdat->kcompactd_wait);  in wakeup_kcompactd()
3048 	pg_data_t *pgdat = (pg_data_t *)p;  in kcompactd()  local
3053 	const struct cpumask *cpumask = cpumask_of_node(pgdat->node_id);  in kcompactd()
3060 	pgdat->kcompactd_max_order = 0;  in kcompactd()
3061 	pgdat->kcompactd_highest_zoneidx = pgdat->nr_zones - 1;  in kcompactd()
3072 		trace_mm_compaction_kcompactd_sleep(pgdat->node_id);  in kcompactd()
3073 		if (wait_event_freezable_timeout(pgdat->kcompactd_wait,  in kcompactd()
3074 			kcompactd_work_requested(pgdat), timeout) &&  in kcompactd()
3075 			!pgdat->proactive_compact_trigger) {  in kcompactd()
3078 			kcompactd_do_work(pgdat);  in kcompactd()
3096 		if (should_proactive_compact_node(pgdat)) {  in kcompactd()
3099 			prev_score = fragmentation_score_node(pgdat);  in kcompactd()
3100 			proactive_compact_node(pgdat);  in kcompactd()
3101 			score = fragmentation_score_node(pgdat);  in kcompactd()
3110 		if (unlikely(pgdat->proactive_compact_trigger))  in kcompactd()
3111 			pgdat->proactive_compact_trigger = false;  in kcompactd()
3123 	pg_data_t *pgdat = NODE_DATA(nid);  in kcompactd_run()  local
3125 	if (pgdat->kcompactd)  in kcompactd_run()
3128 	pgdat->kcompactd = kthread_run(kcompactd, pgdat, "kcompactd%d", nid);  in kcompactd_run()
3129 	if (IS_ERR(pgdat->kcompactd)) {  in kcompactd_run()
3131 		pgdat->kcompactd = NULL;  in kcompactd_run()
3160 		pg_data_t *pgdat = NODE_DATA(nid);  in kcompactd_cpu_online()  local
3163 		mask = cpumask_of_node(pgdat->node_id);  in kcompactd_cpu_online()
3167 			if (pgdat->kcompactd)  in kcompactd_cpu_online()
3168 				set_cpus_allowed_ptr(pgdat->kcompactd, mask);  in kcompactd_cpu_online()