2008 static bool pgdat_free_space_enough(struct pglist_data *pgdat)  in pgdat_free_space_enough()  argument
2014 			   pgdat->node_present_pages >> 4);  in pgdat_free_space_enough()
2015 	for (z = pgdat->nr_zones - 1; z >= 0; z--) {  in pgdat_free_space_enough()
2016 		struct zone *zone = pgdat->node_zones + z;  in pgdat_free_space_enough()
2056 static bool numa_promotion_rate_limit(struct pglist_data *pgdat,  in numa_promotion_rate_limit()  argument
2063 	mod_node_page_state(pgdat, PGPROMOTE_CANDIDATE, nr);  in numa_promotion_rate_limit()
2064 	nr_cand = node_page_state(pgdat, PGPROMOTE_CANDIDATE);  in numa_promotion_rate_limit()
2065 	start = pgdat->nbp_rl_start;  in numa_promotion_rate_limit()
2067 	    cmpxchg(&pgdat->nbp_rl_start, start, now) == start)  in numa_promotion_rate_limit()
2068 		pgdat->nbp_rl_nr_cand = nr_cand;  in numa_promotion_rate_limit()
2069 	if (nr_cand - pgdat->nbp_rl_nr_cand >= rate_limit)  in numa_promotion_rate_limit()
2076 static void numa_promotion_adjust_threshold(struct pglist_data *pgdat,  in numa_promotion_adjust_threshold()  argument
2085 	start = pgdat->nbp_th_start;  in numa_promotion_adjust_threshold()
2087 	    cmpxchg(&pgdat->nbp_th_start, start, now) == start) {  in numa_promotion_adjust_threshold()
2090 		nr_cand = node_page_state(pgdat, PGPROMOTE_CANDIDATE);  in numa_promotion_adjust_threshold()
2091 		diff_cand = nr_cand - pgdat->nbp_th_nr_cand;  in numa_promotion_adjust_threshold()
2093 		th = pgdat->nbp_threshold ? : ref_th;  in numa_promotion_adjust_threshold()
2098 		pgdat->nbp_th_nr_cand = nr_cand;  in numa_promotion_adjust_threshold()
2099 		pgdat->nbp_threshold = th;  in numa_promotion_adjust_threshold()
2121 		struct pglist_data *pgdat;  in should_numa_migrate_memory()  local
2126 		pgdat = NODE_DATA(dst_nid);  in should_numa_migrate_memory()
2127 		if (pgdat_free_space_enough(pgdat)) {  in should_numa_migrate_memory()
2129 			pgdat->nbp_threshold = 0;  in should_numa_migrate_memory()
2130 			mod_node_page_state(pgdat, PGPROMOTE_CANDIDATE_NRL, nr);  in should_numa_migrate_memory()
2136 		numa_promotion_adjust_threshold(pgdat, rate_limit, def_th);  in should_numa_migrate_memory()
2138 		th = pgdat->nbp_threshold ? : def_th;  in should_numa_migrate_memory()
2143 		return !numa_promotion_rate_limit(pgdat, rate_limit, nr);  in should_numa_migrate_memory()