Lines Matching refs:env
1776 static void update_numa_stats(struct task_numa_env *env, in update_numa_stats() argument
1797 !cpumask_test_cpu(cpu, env->p->cpus_ptr)) in update_numa_stats()
1810 ns->node_type = numa_classify(env->imbalance_pct, ns); in update_numa_stats()
1816 static void task_numa_assign(struct task_numa_env *env, in task_numa_assign() argument
1819 struct rq *rq = cpu_rq(env->dst_cpu); in task_numa_assign()
1822 if (env->best_cpu != env->dst_cpu && xchg(&rq->numa_migrate_on, 1)) { in task_numa_assign()
1824 int start = env->dst_cpu; in task_numa_assign()
1827 for_each_cpu_wrap(cpu, cpumask_of_node(env->dst_nid), start) { in task_numa_assign()
1828 if (cpu == env->best_cpu || !idle_cpu(cpu) || in task_numa_assign()
1829 !cpumask_test_cpu(cpu, env->p->cpus_ptr)) { in task_numa_assign()
1833 env->dst_cpu = cpu; in task_numa_assign()
1834 rq = cpu_rq(env->dst_cpu); in task_numa_assign()
1848 if (env->best_cpu != -1 && env->best_cpu != env->dst_cpu) { in task_numa_assign()
1849 rq = cpu_rq(env->best_cpu); in task_numa_assign()
1853 if (env->best_task) in task_numa_assign()
1854 put_task_struct(env->best_task); in task_numa_assign()
1858 env->best_task = p; in task_numa_assign()
1859 env->best_imp = imp; in task_numa_assign()
1860 env->best_cpu = env->dst_cpu; in task_numa_assign()
1864 struct task_numa_env *env) in load_too_imbalanced() argument
1877 src_capacity = env->src_stats.compute_capacity; in load_too_imbalanced()
1878 dst_capacity = env->dst_stats.compute_capacity; in load_too_imbalanced()
1882 orig_src_load = env->src_stats.load; in load_too_imbalanced()
1883 orig_dst_load = env->dst_stats.load; in load_too_imbalanced()
1904 static bool task_numa_compare(struct task_numa_env *env, in task_numa_compare() argument
1907 struct numa_group *cur_ng, *p_ng = deref_curr_numa_group(env->p); in task_numa_compare()
1908 struct rq *dst_rq = cpu_rq(env->dst_cpu); in task_numa_compare()
1912 int dist = env->dist; in task_numa_compare()
1929 if (cur == env->p) { in task_numa_compare()
1935 if (maymove && moveimp >= env->best_imp) in task_numa_compare()
1942 if (!cpumask_test_cpu(env->src_cpu, cur->cpus_ptr)) in task_numa_compare()
1949 if (env->best_task && in task_numa_compare()
1950 env->best_task->numa_preferred_nid == env->src_nid && in task_numa_compare()
1951 cur->numa_preferred_nid != env->src_nid) { in task_numa_compare()
1973 if (env->dst_stats.node_type == node_has_spare) in task_numa_compare()
1976 imp = taskimp + task_weight(cur, env->src_nid, dist) - in task_numa_compare()
1977 task_weight(cur, env->dst_nid, dist); in task_numa_compare()
1990 imp += group_weight(cur, env->src_nid, dist) - in task_numa_compare()
1991 group_weight(cur, env->dst_nid, dist); in task_numa_compare()
1993 imp += task_weight(cur, env->src_nid, dist) - in task_numa_compare()
1994 task_weight(cur, env->dst_nid, dist); in task_numa_compare()
1998 if (cur->numa_preferred_nid == env->dst_nid) in task_numa_compare()
2007 if (cur->numa_preferred_nid == env->src_nid) in task_numa_compare()
2010 if (maymove && moveimp > imp && moveimp > env->best_imp) { in task_numa_compare()
2020 if (env->best_task && cur->numa_preferred_nid == env->src_nid && in task_numa_compare()
2021 env->best_task->numa_preferred_nid != env->src_nid) { in task_numa_compare()
2031 if (imp < SMALLIMP || imp <= env->best_imp + SMALLIMP / 2) in task_numa_compare()
2037 load = task_h_load(env->p) - task_h_load(cur); in task_numa_compare()
2041 dst_load = env->dst_stats.load + load; in task_numa_compare()
2042 src_load = env->src_stats.load - load; in task_numa_compare()
2044 if (load_too_imbalanced(src_load, dst_load, env)) in task_numa_compare()
2050 int cpu = env->dst_stats.idle_cpu; in task_numa_compare()
2054 cpu = env->dst_cpu; in task_numa_compare()
2060 if (!idle_cpu(cpu) && env->best_cpu >= 0 && in task_numa_compare()
2061 idle_cpu(env->best_cpu)) { in task_numa_compare()
2062 cpu = env->best_cpu; in task_numa_compare()
2065 env->dst_cpu = cpu; in task_numa_compare()
2068 task_numa_assign(env, cur, imp); in task_numa_compare()
2075 if (maymove && !cur && env->best_cpu >= 0 && idle_cpu(env->best_cpu)) in task_numa_compare()
2082 if (!maymove && env->best_task && in task_numa_compare()
2083 env->best_task->numa_preferred_nid == env->src_nid) { in task_numa_compare()
2092 static void task_numa_find_cpu(struct task_numa_env *env, in task_numa_find_cpu() argument
2102 if (env->dst_stats.node_type == node_has_spare) { in task_numa_find_cpu()
2112 src_running = env->src_stats.nr_running - 1; in task_numa_find_cpu()
2113 dst_running = env->dst_stats.nr_running + 1; in task_numa_find_cpu()
2116 env->imb_numa_nr); in task_numa_find_cpu()
2121 if (env->dst_stats.idle_cpu >= 0) { in task_numa_find_cpu()
2122 env->dst_cpu = env->dst_stats.idle_cpu; in task_numa_find_cpu()
2123 task_numa_assign(env, NULL, 0); in task_numa_find_cpu()
2133 load = task_h_load(env->p); in task_numa_find_cpu()
2134 dst_load = env->dst_stats.load + load; in task_numa_find_cpu()
2135 src_load = env->src_stats.load - load; in task_numa_find_cpu()
2136 maymove = !load_too_imbalanced(src_load, dst_load, env); in task_numa_find_cpu()
2139 for_each_cpu(cpu, cpumask_of_node(env->dst_nid)) { in task_numa_find_cpu()
2141 if (!cpumask_test_cpu(cpu, env->p->cpus_ptr)) in task_numa_find_cpu()
2144 env->dst_cpu = cpu; in task_numa_find_cpu()
2145 if (task_numa_compare(env, taskimp, groupimp, maymove)) in task_numa_find_cpu()
2152 struct task_numa_env env = { in task_numa_migrate() local
2180 sd = rcu_dereference(per_cpu(sd_numa, env.src_cpu)); in task_numa_migrate()
2182 env.imbalance_pct = 100 + (sd->imbalance_pct - 100) / 2; in task_numa_migrate()
2183 env.imb_numa_nr = sd->imb_numa_nr; in task_numa_migrate()
2198 env.dst_nid = p->numa_preferred_nid; in task_numa_migrate()
2199 dist = env.dist = node_distance(env.src_nid, env.dst_nid); in task_numa_migrate()
2200 taskweight = task_weight(p, env.src_nid, dist); in task_numa_migrate()
2201 groupweight = group_weight(p, env.src_nid, dist); in task_numa_migrate()
2202 update_numa_stats(&env, &env.src_stats, env.src_nid, false); in task_numa_migrate()
2203 taskimp = task_weight(p, env.dst_nid, dist) - taskweight; in task_numa_migrate()
2204 groupimp = group_weight(p, env.dst_nid, dist) - groupweight; in task_numa_migrate()
2205 update_numa_stats(&env, &env.dst_stats, env.dst_nid, true); in task_numa_migrate()
2208 task_numa_find_cpu(&env, taskimp, groupimp); in task_numa_migrate()
2218 if (env.best_cpu == -1 || (ng && ng->active_nodes > 1)) { in task_numa_migrate()
2220 if (nid == env.src_nid || nid == p->numa_preferred_nid) in task_numa_migrate()
2223 dist = node_distance(env.src_nid, env.dst_nid); in task_numa_migrate()
2225 dist != env.dist) { in task_numa_migrate()
2226 taskweight = task_weight(p, env.src_nid, dist); in task_numa_migrate()
2227 groupweight = group_weight(p, env.src_nid, dist); in task_numa_migrate()
2236 env.dist = dist; in task_numa_migrate()
2237 env.dst_nid = nid; in task_numa_migrate()
2238 update_numa_stats(&env, &env.dst_stats, env.dst_nid, true); in task_numa_migrate()
2239 task_numa_find_cpu(&env, taskimp, groupimp); in task_numa_migrate()
2252 if (env.best_cpu == -1) in task_numa_migrate()
2253 nid = env.src_nid; in task_numa_migrate()
2255 nid = cpu_to_node(env.best_cpu); in task_numa_migrate()
2262 if (env.best_cpu == -1) { in task_numa_migrate()
2263 trace_sched_stick_numa(p, env.src_cpu, NULL, -1); in task_numa_migrate()
2267 best_rq = cpu_rq(env.best_cpu); in task_numa_migrate()
2268 if (env.best_task == NULL) { in task_numa_migrate()
2269 ret = migrate_task_to(p, env.best_cpu); in task_numa_migrate()
2272 trace_sched_stick_numa(p, env.src_cpu, NULL, env.best_cpu); in task_numa_migrate()
2276 ret = migrate_swap(p, env.best_task, env.best_cpu, env.src_cpu); in task_numa_migrate()
2280 trace_sched_stick_numa(p, env.src_cpu, env.best_task, env.best_cpu); in task_numa_migrate()
2281 put_task_struct(env.best_task); in task_numa_migrate()
7945 static int task_hot(struct task_struct *p, struct lb_env *env) in task_hot() argument
7949 lockdep_assert_rq_held(env->src_rq); in task_hot()
7958 if (env->sd->flags & SD_SHARE_CPUCAPACITY) in task_hot()
7964 if (sched_feat(CACHE_HOT_BUDDY) && env->dst_rq->nr_running && in task_hot()
7976 if (!sched_core_cookie_match(cpu_rq(env->dst_cpu), p)) in task_hot()
7982 delta = rq_clock_task(env->src_rq) - p->se.exec_start; in task_hot()
7993 static int migrate_degrades_locality(struct task_struct *p, struct lb_env *env) in migrate_degrades_locality() argument
8002 if (!p->numa_faults || !(env->sd->flags & SD_NUMA)) in migrate_degrades_locality()
8005 src_nid = cpu_to_node(env->src_cpu); in migrate_degrades_locality()
8006 dst_nid = cpu_to_node(env->dst_cpu); in migrate_degrades_locality()
8013 if (env->src_rq->nr_running > env->src_rq->nr_preferred_running) in migrate_degrades_locality()
8024 if (env->idle == CPU_IDLE) in migrate_degrades_locality()
8041 struct lb_env *env) in migrate_degrades_locality() argument
8051 int can_migrate_task(struct task_struct *p, struct lb_env *env) in can_migrate_task() argument
8055 lockdep_assert_rq_held(env->src_rq); in can_migrate_task()
8064 if (throttled_lb_pair(task_group(p), env->src_cpu, env->dst_cpu)) in can_migrate_task()
8071 if (!cpumask_test_cpu(env->dst_cpu, p->cpus_ptr)) { in can_migrate_task()
8076 env->flags |= LBF_SOME_PINNED; in can_migrate_task()
8088 if (env->idle == CPU_NEWLY_IDLE || in can_migrate_task()
8089 env->flags & (LBF_DST_PINNED | LBF_ACTIVE_LB)) in can_migrate_task()
8093 for_each_cpu_and(cpu, env->dst_grpmask, env->cpus) { in can_migrate_task()
8095 env->flags |= LBF_DST_PINNED; in can_migrate_task()
8096 env->new_dst_cpu = cpu; in can_migrate_task()
8105 env->flags &= ~LBF_ALL_PINNED; in can_migrate_task()
8107 if (task_on_cpu(env->src_rq, p)) { in can_migrate_task()
8119 if (env->flags & LBF_ACTIVE_LB) in can_migrate_task()
8122 tsk_cache_hot = migrate_degrades_locality(p, env); in can_migrate_task()
8124 tsk_cache_hot = task_hot(p, env); in can_migrate_task()
8127 env->sd->nr_balance_failed > env->sd->cache_nice_tries) { in can_migrate_task()
8129 schedstat_inc(env->sd->lb_hot_gained[env->idle]); in can_migrate_task()
8142 static void detach_task(struct task_struct *p, struct lb_env *env) in detach_task() argument
8144 lockdep_assert_rq_held(env->src_rq); in detach_task()
8146 deactivate_task(env->src_rq, p, DEQUEUE_NOCLOCK); in detach_task()
8147 set_task_cpu(p, env->dst_cpu); in detach_task()
8156 static struct task_struct *detach_one_task(struct lb_env *env) in detach_one_task() argument
8160 lockdep_assert_rq_held(env->src_rq); in detach_one_task()
8163 &env->src_rq->cfs_tasks, se.group_node) { in detach_one_task()
8164 if (!can_migrate_task(p, env)) in detach_one_task()
8167 detach_task(p, env); in detach_one_task()
8175 schedstat_inc(env->sd->lb_gained[env->idle]); in detach_one_task()
8187 static int detach_tasks(struct lb_env *env) in detach_tasks() argument
8189 struct list_head *tasks = &env->src_rq->cfs_tasks; in detach_tasks()
8194 lockdep_assert_rq_held(env->src_rq); in detach_tasks()
8200 if (env->src_rq->nr_running <= 1) { in detach_tasks()
8201 env->flags &= ~LBF_ALL_PINNED; in detach_tasks()
8205 if (env->imbalance <= 0) in detach_tasks()
8213 if (env->idle != CPU_NOT_IDLE && env->src_rq->nr_running <= 1) in detach_tasks()
8216 env->loop++; in detach_tasks()
8221 if (env->loop > env->loop_max && in detach_tasks()
8222 !(env->flags & LBF_ALL_PINNED)) in detach_tasks()
8226 if (env->loop > env->loop_break) { in detach_tasks()
8227 env->loop_break += SCHED_NR_MIGRATE_BREAK; in detach_tasks()
8228 env->flags |= LBF_NEED_BREAK; in detach_tasks()
8234 if (!can_migrate_task(p, env)) in detach_tasks()
8237 switch (env->migration_type) { in detach_tasks()
8249 load < 16 && !env->sd->nr_balance_failed) in detach_tasks()
8258 if (shr_bound(load, env->sd->nr_balance_failed) > env->imbalance) in detach_tasks()
8261 env->imbalance -= load; in detach_tasks()
8267 if (util > env->imbalance) in detach_tasks()
8270 env->imbalance -= util; in detach_tasks()
8274 env->imbalance--; in detach_tasks()
8279 if (task_fits_capacity(p, capacity_of(env->src_cpu))) in detach_tasks()
8282 env->imbalance = 0; in detach_tasks()
8286 detach_task(p, env); in detach_tasks()
8287 list_add(&p->se.group_node, &env->tasks); in detach_tasks()
8297 if (env->idle == CPU_NEWLY_IDLE) in detach_tasks()
8305 if (env->imbalance <= 0) in detach_tasks()
8318 schedstat_add(env->sd->lb_gained[env->idle], detached); in detach_tasks()
8353 static void attach_tasks(struct lb_env *env) in attach_tasks() argument
8355 struct list_head *tasks = &env->tasks; in attach_tasks()
8359 rq_lock(env->dst_rq, &rf); in attach_tasks()
8360 update_rq_clock(env->dst_rq); in attach_tasks()
8366 attach_task(env->dst_rq, p); in attach_tasks()
8369 rq_unlock(env->dst_rq, &rf); in attach_tasks()
8958 sched_asym(struct lb_env *env, struct sd_lb_stats *sds, struct sg_lb_stats *sgs, in sched_asym() argument
8964 return asym_smt_can_pull_tasks(env->dst_cpu, sds, sgs, group); in sched_asym()
8966 return sched_asym_prefer(env->dst_cpu, group->asym_prefer_cpu); in sched_asym()
8990 static inline void update_sg_lb_stats(struct lb_env *env, in update_sg_lb_stats() argument
9002 for_each_cpu_and(i, sched_group_span(group), env->cpus) { in update_sg_lb_stats()
9036 if (env->sd->flags & SD_ASYM_CPUCAPACITY) { in update_sg_lb_stats()
9042 } else if ((env->idle != CPU_NOT_IDLE) && in update_sg_lb_stats()
9043 sched_reduced_capacity(rq, env->sd)) { in update_sg_lb_stats()
9055 if (!local_group && env->sd->flags & SD_ASYM_PACKING && in update_sg_lb_stats()
9056 env->idle != CPU_NOT_IDLE && sgs->sum_h_nr_running && in update_sg_lb_stats()
9057 sched_asym(env, sds, sgs, group)) { in update_sg_lb_stats()
9061 sgs->group_type = group_classify(env->sd->imbalance_pct, group, sgs); in update_sg_lb_stats()
9082 static bool update_sd_pick_busiest(struct lb_env *env, in update_sd_pick_busiest() argument
9099 if ((env->sd->flags & SD_ASYM_CPUCAPACITY) && in update_sd_pick_busiest()
9101 (!capacity_greater(capacity_of(env->dst_cpu), sg->sgc->max_capacity) || in update_sd_pick_busiest()
9183 if ((env->sd->flags & SD_ASYM_CPUCAPACITY) && in update_sd_pick_busiest()
9185 (capacity_greater(sg->sgc->min_capacity, capacity_of(env->dst_cpu)))) in update_sd_pick_busiest()
9549 static void update_idle_cpu_scan(struct lb_env *env, in update_idle_cpu_scan() argument
9563 if (!sched_feat(SIS_UTIL) || env->idle == CPU_NEWLY_IDLE) in update_idle_cpu_scan()
9566 llc_weight = per_cpu(sd_llc_size, env->dst_cpu); in update_idle_cpu_scan()
9567 if (env->sd->span_weight != llc_weight) in update_idle_cpu_scan()
9570 sd_share = rcu_dereference(per_cpu(sd_llc_shared, env->dst_cpu)); in update_idle_cpu_scan()
9607 pct = env->sd->imbalance_pct; in update_idle_cpu_scan()
9626 static inline void update_sd_lb_stats(struct lb_env *env, struct sd_lb_stats *sds) in update_sd_lb_stats() argument
9628 struct sched_domain *child = env->sd->child; in update_sd_lb_stats()
9629 struct sched_group *sg = env->sd->groups; in update_sd_lb_stats()
9639 local_group = cpumask_test_cpu(env->dst_cpu, sched_group_span(sg)); in update_sd_lb_stats()
9644 if (env->idle != CPU_NEWLY_IDLE || in update_sd_lb_stats()
9646 update_group_capacity(env->sd, env->dst_cpu); in update_sd_lb_stats()
9649 update_sg_lb_stats(env, sds, sg, sgs, &sg_status); in update_sd_lb_stats()
9655 if (update_sd_pick_busiest(env, sds, sg, sgs)) { in update_sd_lb_stats()
9667 } while (sg != env->sd->groups); in update_sd_lb_stats()
9673 if (env->sd->flags & SD_NUMA) in update_sd_lb_stats()
9674 env->fbq_type = fbq_classify_group(&sds->busiest_stat); in update_sd_lb_stats()
9676 if (!env->sd->parent) { in update_sd_lb_stats()
9677 struct root_domain *rd = env->dst_rq->rd; in update_sd_lb_stats()
9686 struct root_domain *rd = env->dst_rq->rd; in update_sd_lb_stats()
9692 update_idle_cpu_scan(env, sum_util); in update_sd_lb_stats()
9701 static inline void calculate_imbalance(struct lb_env *env, struct sd_lb_stats *sds) in calculate_imbalance() argument
9709 if (env->sd->flags & SD_ASYM_CPUCAPACITY) { in calculate_imbalance()
9711 env->migration_type = migrate_misfit; in calculate_imbalance()
9712 env->imbalance = 1; in calculate_imbalance()
9718 env->migration_type = migrate_load; in calculate_imbalance()
9719 env->imbalance = busiest->group_misfit_task_load; in calculate_imbalance()
9729 env->migration_type = migrate_task; in calculate_imbalance()
9730 env->imbalance = busiest->sum_h_nr_running; in calculate_imbalance()
9741 env->migration_type = migrate_task; in calculate_imbalance()
9742 env->imbalance = 1; in calculate_imbalance()
9752 !(env->sd->flags & SD_SHARE_PKG_RESOURCES)) { in calculate_imbalance()
9761 env->migration_type = migrate_util; in calculate_imbalance()
9762 env->imbalance = max(local->group_capacity, local->group_util) - in calculate_imbalance()
9772 if (env->idle != CPU_NOT_IDLE && env->imbalance == 0) { in calculate_imbalance()
9773 env->migration_type = migrate_task; in calculate_imbalance()
9774 env->imbalance = 1; in calculate_imbalance()
9786 env->migration_type = migrate_task; in calculate_imbalance()
9788 env->imbalance = nr_diff; in calculate_imbalance()
9795 env->migration_type = migrate_task; in calculate_imbalance()
9796 env->imbalance = max_t(long, 0, in calculate_imbalance()
9802 if (env->sd->flags & SD_NUMA) { in calculate_imbalance()
9803 env->imbalance = adjust_numa_imbalance(env->imbalance, in calculate_imbalance()
9805 env->sd->imb_numa_nr); in calculate_imbalance()
9810 env->imbalance >>= 1; in calculate_imbalance()
9833 env->imbalance = 0; in calculate_imbalance()
9849 env->migration_type = migrate_load; in calculate_imbalance()
9850 env->imbalance = min( in calculate_imbalance()
9888 static struct sched_group *find_busiest_group(struct lb_env *env) in find_busiest_group() argument
9899 update_sd_lb_stats(env, &sds); in find_busiest_group()
9902 struct root_domain *rd = env->dst_rq->rd; in find_busiest_group()
9966 env->sd->imbalance_pct * local->avg_load) in find_busiest_group()
9976 if (env->idle == CPU_NOT_IDLE) in find_busiest_group()
10006 calculate_imbalance(env, &sds); in find_busiest_group()
10007 return env->imbalance ? sds.busiest : NULL; in find_busiest_group()
10010 env->imbalance = 0; in find_busiest_group()
10017 static struct rq *find_busiest_queue(struct lb_env *env, in find_busiest_queue() argument
10025 for_each_cpu_and(i, sched_group_span(group), env->cpus) { in find_busiest_queue()
10052 if (rt > env->fbq_type) in find_busiest_queue()
10067 if (env->sd->flags & SD_ASYM_CPUCAPACITY && in find_busiest_queue()
10068 !capacity_greater(capacity_of(env->dst_cpu), capacity) && in find_busiest_queue()
10073 if ((env->sd->flags & SD_ASYM_PACKING) && in find_busiest_queue()
10074 sched_asym_prefer(i, env->dst_cpu) && in find_busiest_queue()
10078 switch (env->migration_type) { in find_busiest_queue()
10086 if (nr_running == 1 && load > env->imbalance && in find_busiest_queue()
10087 !check_cpu_capacity(rq, env->sd)) in find_busiest_queue()
10159 asym_active_balance(struct lb_env *env) in asym_active_balance() argument
10166 return env->idle != CPU_NOT_IDLE && (env->sd->flags & SD_ASYM_PACKING) && in asym_active_balance()
10167 sched_asym_prefer(env->dst_cpu, env->src_cpu); in asym_active_balance()
10171 imbalanced_active_balance(struct lb_env *env) in imbalanced_active_balance() argument
10173 struct sched_domain *sd = env->sd; in imbalanced_active_balance()
10180 if ((env->migration_type == migrate_task) && in imbalanced_active_balance()
10187 static int need_active_balance(struct lb_env *env) in need_active_balance() argument
10189 struct sched_domain *sd = env->sd; in need_active_balance()
10191 if (asym_active_balance(env)) in need_active_balance()
10194 if (imbalanced_active_balance(env)) in need_active_balance()
10203 if ((env->idle != CPU_NOT_IDLE) && in need_active_balance()
10204 (env->src_rq->cfs.h_nr_running == 1)) { in need_active_balance()
10205 if ((check_cpu_capacity(env->src_rq, sd)) && in need_active_balance()
10206 (capacity_of(env->src_cpu)*sd->imbalance_pct < capacity_of(env->dst_cpu)*100)) in need_active_balance()
10210 if (env->migration_type == migrate_misfit) in need_active_balance()
10218 static int should_we_balance(struct lb_env *env) in should_we_balance() argument
10220 struct sched_group *sg = env->sd->groups; in should_we_balance()
10227 if (!cpumask_test_cpu(env->dst_cpu, env->cpus)) in should_we_balance()
10237 if (env->idle == CPU_NEWLY_IDLE) { in should_we_balance()
10238 if (env->dst_rq->nr_running > 0 || env->dst_rq->ttwu_pending) in should_we_balance()
10244 for_each_cpu_and(cpu, group_balance_mask(sg), env->cpus) { in should_we_balance()
10249 return cpu == env->dst_cpu; in should_we_balance()
10253 return group_balance_cpu(sg) == env->dst_cpu; in should_we_balance()
10270 struct lb_env env = { in load_balance() local
10279 .tasks = LIST_HEAD_INIT(env.tasks), in load_balance()
10287 if (!should_we_balance(&env)) { in load_balance()
10292 group = find_busiest_group(&env); in load_balance()
10298 busiest = find_busiest_queue(&env, group); in load_balance()
10304 WARN_ON_ONCE(busiest == env.dst_rq); in load_balance()
10306 schedstat_add(sd->lb_imbalance[idle], env.imbalance); in load_balance()
10308 env.src_cpu = busiest->cpu; in load_balance()
10309 env.src_rq = busiest; in load_balance()
10313 env.flags |= LBF_ALL_PINNED; in load_balance()
10321 env.loop_max = min(sysctl_sched_nr_migrate, busiest->nr_running); in load_balance()
10331 cur_ld_moved = detach_tasks(&env); in load_balance()
10344 attach_tasks(&env); in load_balance()
10350 if (env.flags & LBF_NEED_BREAK) { in load_balance()
10351 env.flags &= ~LBF_NEED_BREAK; in load_balance()
10353 if (env.loop < busiest->nr_running) in load_balance()
10376 if ((env.flags & LBF_DST_PINNED) && env.imbalance > 0) { in load_balance()
10379 __cpumask_clear_cpu(env.dst_cpu, env.cpus); in load_balance()
10381 env.dst_rq = cpu_rq(env.new_dst_cpu); in load_balance()
10382 env.dst_cpu = env.new_dst_cpu; in load_balance()
10383 env.flags &= ~LBF_DST_PINNED; in load_balance()
10384 env.loop = 0; in load_balance()
10385 env.loop_break = SCHED_NR_MIGRATE_BREAK; in load_balance()
10400 if ((env.flags & LBF_SOME_PINNED) && env.imbalance > 0) in load_balance()
10405 if (unlikely(env.flags & LBF_ALL_PINNED)) { in load_balance()
10415 if (!cpumask_subset(cpus, env.dst_grpmask)) { in load_balance()
10416 env.loop = 0; in load_balance()
10417 env.loop_break = SCHED_NR_MIGRATE_BREAK; in load_balance()
10435 if (need_active_balance(&env)) { in load_balance()
10451 env.flags &= ~LBF_ALL_PINNED; in load_balance()
10475 if (likely(!active_balance) || need_active_balance(&env)) { in load_balance()
10488 if (sd_parent && !(env.flags & LBF_ALL_PINNED)) { in load_balance()
10514 if (env.idle == CPU_NEWLY_IDLE) in load_balance()
10518 if ((env.flags & LBF_ALL_PINNED && in load_balance()
10612 struct lb_env env = { in active_load_balance_cpu_stop() local
10625 p = detach_one_task(&env); in active_load_balance_cpu_stop()