Lines Matching refs:env
2042 static void update_numa_stats(struct task_numa_env *env, in update_numa_stats() argument
2063 !cpumask_test_cpu(cpu, env->p->cpus_ptr)) in update_numa_stats()
2076 ns->node_type = numa_classify(env->imbalance_pct, ns); in update_numa_stats()
2082 static void task_numa_assign(struct task_numa_env *env, in task_numa_assign() argument
2085 struct rq *rq = cpu_rq(env->dst_cpu); in task_numa_assign()
2088 if (env->best_cpu != env->dst_cpu && xchg(&rq->numa_migrate_on, 1)) { in task_numa_assign()
2090 int start = env->dst_cpu; in task_numa_assign()
2093 for_each_cpu_wrap(cpu, cpumask_of_node(env->dst_nid), start + 1) { in task_numa_assign()
2094 if (cpu == env->best_cpu || !idle_cpu(cpu) || in task_numa_assign()
2095 !cpumask_test_cpu(cpu, env->p->cpus_ptr)) { in task_numa_assign()
2099 env->dst_cpu = cpu; in task_numa_assign()
2100 rq = cpu_rq(env->dst_cpu); in task_numa_assign()
2114 if (env->best_cpu != -1 && env->best_cpu != env->dst_cpu) { in task_numa_assign()
2115 rq = cpu_rq(env->best_cpu); in task_numa_assign()
2119 if (env->best_task) in task_numa_assign()
2120 put_task_struct(env->best_task); in task_numa_assign()
2124 env->best_task = p; in task_numa_assign()
2125 env->best_imp = imp; in task_numa_assign()
2126 env->best_cpu = env->dst_cpu; in task_numa_assign()
2130 struct task_numa_env *env) in load_too_imbalanced() argument
2143 src_capacity = env->src_stats.compute_capacity; in load_too_imbalanced()
2144 dst_capacity = env->dst_stats.compute_capacity; in load_too_imbalanced()
2148 orig_src_load = env->src_stats.load; in load_too_imbalanced()
2149 orig_dst_load = env->dst_stats.load; in load_too_imbalanced()
2170 static bool task_numa_compare(struct task_numa_env *env, in task_numa_compare() argument
2173 struct numa_group *cur_ng, *p_ng = deref_curr_numa_group(env->p); in task_numa_compare()
2174 struct rq *dst_rq = cpu_rq(env->dst_cpu); in task_numa_compare()
2178 int dist = env->dist; in task_numa_compare()
2195 if (cur == env->p) { in task_numa_compare()
2201 if (maymove && moveimp >= env->best_imp) in task_numa_compare()
2208 if (!cpumask_test_cpu(env->src_cpu, cur->cpus_ptr)) in task_numa_compare()
2215 if (env->best_task && in task_numa_compare()
2216 env->best_task->numa_preferred_nid == env->src_nid && in task_numa_compare()
2217 cur->numa_preferred_nid != env->src_nid) { in task_numa_compare()
2239 if (env->dst_stats.node_type == node_has_spare) in task_numa_compare()
2242 imp = taskimp + task_weight(cur, env->src_nid, dist) - in task_numa_compare()
2243 task_weight(cur, env->dst_nid, dist); in task_numa_compare()
2256 imp += group_weight(cur, env->src_nid, dist) - in task_numa_compare()
2257 group_weight(cur, env->dst_nid, dist); in task_numa_compare()
2259 imp += task_weight(cur, env->src_nid, dist) - in task_numa_compare()
2260 task_weight(cur, env->dst_nid, dist); in task_numa_compare()
2264 if (cur->numa_preferred_nid == env->dst_nid) in task_numa_compare()
2273 if (cur->numa_preferred_nid == env->src_nid) in task_numa_compare()
2276 if (maymove && moveimp > imp && moveimp > env->best_imp) { in task_numa_compare()
2286 if (env->best_task && cur->numa_preferred_nid == env->src_nid && in task_numa_compare()
2287 env->best_task->numa_preferred_nid != env->src_nid) { in task_numa_compare()
2297 if (imp < SMALLIMP || imp <= env->best_imp + SMALLIMP / 2) in task_numa_compare()
2303 load = task_h_load(env->p) - task_h_load(cur); in task_numa_compare()
2307 dst_load = env->dst_stats.load + load; in task_numa_compare()
2308 src_load = env->src_stats.load - load; in task_numa_compare()
2310 if (load_too_imbalanced(src_load, dst_load, env)) in task_numa_compare()
2316 int cpu = env->dst_stats.idle_cpu; in task_numa_compare()
2320 cpu = env->dst_cpu; in task_numa_compare()
2326 if (!idle_cpu(cpu) && env->best_cpu >= 0 && in task_numa_compare()
2327 idle_cpu(env->best_cpu)) { in task_numa_compare()
2328 cpu = env->best_cpu; in task_numa_compare()
2331 env->dst_cpu = cpu; in task_numa_compare()
2334 task_numa_assign(env, cur, imp); in task_numa_compare()
2341 if (maymove && !cur && env->best_cpu >= 0 && idle_cpu(env->best_cpu)) in task_numa_compare()
2348 if (!maymove && env->best_task && in task_numa_compare()
2349 env->best_task->numa_preferred_nid == env->src_nid) { in task_numa_compare()
2358 static void task_numa_find_cpu(struct task_numa_env *env, in task_numa_find_cpu() argument
2368 if (env->dst_stats.node_type == node_has_spare) { in task_numa_find_cpu()
2378 src_running = env->src_stats.nr_running - 1; in task_numa_find_cpu()
2379 dst_running = env->dst_stats.nr_running + 1; in task_numa_find_cpu()
2382 env->imb_numa_nr); in task_numa_find_cpu()
2387 if (env->dst_stats.idle_cpu >= 0) { in task_numa_find_cpu()
2388 env->dst_cpu = env->dst_stats.idle_cpu; in task_numa_find_cpu()
2389 task_numa_assign(env, NULL, 0); in task_numa_find_cpu()
2399 load = task_h_load(env->p); in task_numa_find_cpu()
2400 dst_load = env->dst_stats.load + load; in task_numa_find_cpu()
2401 src_load = env->src_stats.load - load; in task_numa_find_cpu()
2402 maymove = !load_too_imbalanced(src_load, dst_load, env); in task_numa_find_cpu()
2405 for_each_cpu(cpu, cpumask_of_node(env->dst_nid)) { in task_numa_find_cpu()
2407 if (!cpumask_test_cpu(cpu, env->p->cpus_ptr)) in task_numa_find_cpu()
2410 env->dst_cpu = cpu; in task_numa_find_cpu()
2411 if (task_numa_compare(env, taskimp, groupimp, maymove)) in task_numa_find_cpu()
2418 struct task_numa_env env = { in task_numa_migrate() local
2446 sd = rcu_dereference(per_cpu(sd_numa, env.src_cpu)); in task_numa_migrate()
2448 env.imbalance_pct = 100 + (sd->imbalance_pct - 100) / 2; in task_numa_migrate()
2449 env.imb_numa_nr = sd->imb_numa_nr; in task_numa_migrate()
2464 env.dst_nid = p->numa_preferred_nid; in task_numa_migrate()
2465 dist = env.dist = node_distance(env.src_nid, env.dst_nid); in task_numa_migrate()
2466 taskweight = task_weight(p, env.src_nid, dist); in task_numa_migrate()
2467 groupweight = group_weight(p, env.src_nid, dist); in task_numa_migrate()
2468 update_numa_stats(&env, &env.src_stats, env.src_nid, false); in task_numa_migrate()
2469 taskimp = task_weight(p, env.dst_nid, dist) - taskweight; in task_numa_migrate()
2470 groupimp = group_weight(p, env.dst_nid, dist) - groupweight; in task_numa_migrate()
2471 update_numa_stats(&env, &env.dst_stats, env.dst_nid, true); in task_numa_migrate()
2474 task_numa_find_cpu(&env, taskimp, groupimp); in task_numa_migrate()
2484 if (env.best_cpu == -1 || (ng && ng->active_nodes > 1)) { in task_numa_migrate()
2486 if (nid == env.src_nid || nid == p->numa_preferred_nid) in task_numa_migrate()
2489 dist = node_distance(env.src_nid, env.dst_nid); in task_numa_migrate()
2491 dist != env.dist) { in task_numa_migrate()
2492 taskweight = task_weight(p, env.src_nid, dist); in task_numa_migrate()
2493 groupweight = group_weight(p, env.src_nid, dist); in task_numa_migrate()
2502 env.dist = dist; in task_numa_migrate()
2503 env.dst_nid = nid; in task_numa_migrate()
2504 update_numa_stats(&env, &env.dst_stats, env.dst_nid, true); in task_numa_migrate()
2505 task_numa_find_cpu(&env, taskimp, groupimp); in task_numa_migrate()
2518 if (env.best_cpu == -1) in task_numa_migrate()
2519 nid = env.src_nid; in task_numa_migrate()
2521 nid = cpu_to_node(env.best_cpu); in task_numa_migrate()
2528 if (env.best_cpu == -1) { in task_numa_migrate()
2529 trace_sched_stick_numa(p, env.src_cpu, NULL, -1); in task_numa_migrate()
2533 best_rq = cpu_rq(env.best_cpu); in task_numa_migrate()
2534 if (env.best_task == NULL) { in task_numa_migrate()
2535 ret = migrate_task_to(p, env.best_cpu); in task_numa_migrate()
2538 trace_sched_stick_numa(p, env.src_cpu, NULL, env.best_cpu); in task_numa_migrate()
2542 ret = migrate_swap(p, env.best_task, env.best_cpu, env.src_cpu); in task_numa_migrate()
2546 trace_sched_stick_numa(p, env.src_cpu, env.best_task, env.best_cpu); in task_numa_migrate()
2547 put_task_struct(env.best_task); in task_numa_migrate()
8589 static int task_hot(struct task_struct *p, struct lb_env *env) in task_hot() argument
8593 lockdep_assert_rq_held(env->src_rq); in task_hot()
8602 if (env->sd->flags & SD_SHARE_CPUCAPACITY) in task_hot()
8608 if (sched_feat(CACHE_HOT_BUDDY) && env->dst_rq->nr_running && in task_hot()
8619 if (!sched_core_cookie_match(cpu_rq(env->dst_cpu), p)) in task_hot()
8625 delta = rq_clock_task(env->src_rq) - p->se.exec_start; in task_hot()
8636 static int migrate_degrades_locality(struct task_struct *p, struct lb_env *env) in migrate_degrades_locality() argument
8645 if (!p->numa_faults || !(env->sd->flags & SD_NUMA)) in migrate_degrades_locality()
8648 src_nid = cpu_to_node(env->src_cpu); in migrate_degrades_locality()
8649 dst_nid = cpu_to_node(env->dst_cpu); in migrate_degrades_locality()
8656 if (env->src_rq->nr_running > env->src_rq->nr_preferred_running) in migrate_degrades_locality()
8667 if (env->idle == CPU_IDLE) in migrate_degrades_locality()
8684 struct lb_env *env) in migrate_degrades_locality() argument
8694 int can_migrate_task(struct task_struct *p, struct lb_env *env) in can_migrate_task() argument
8698 lockdep_assert_rq_held(env->src_rq); in can_migrate_task()
8707 if (throttled_lb_pair(task_group(p), env->src_cpu, env->dst_cpu)) in can_migrate_task()
8714 if (!cpumask_test_cpu(env->dst_cpu, p->cpus_ptr)) { in can_migrate_task()
8719 env->flags |= LBF_SOME_PINNED; in can_migrate_task()
8731 if (env->idle == CPU_NEWLY_IDLE || in can_migrate_task()
8732 env->flags & (LBF_DST_PINNED | LBF_ACTIVE_LB)) in can_migrate_task()
8736 for_each_cpu_and(cpu, env->dst_grpmask, env->cpus) { in can_migrate_task()
8738 env->flags |= LBF_DST_PINNED; in can_migrate_task()
8739 env->new_dst_cpu = cpu; in can_migrate_task()
8748 env->flags &= ~LBF_ALL_PINNED; in can_migrate_task()
8750 if (task_on_cpu(env->src_rq, p)) { in can_migrate_task()
8762 if (env->flags & LBF_ACTIVE_LB) in can_migrate_task()
8765 tsk_cache_hot = migrate_degrades_locality(p, env); in can_migrate_task()
8767 tsk_cache_hot = task_hot(p, env); in can_migrate_task()
8770 env->sd->nr_balance_failed > env->sd->cache_nice_tries) { in can_migrate_task()
8772 schedstat_inc(env->sd->lb_hot_gained[env->idle]); in can_migrate_task()
8785 static void detach_task(struct task_struct *p, struct lb_env *env) in detach_task() argument
8787 lockdep_assert_rq_held(env->src_rq); in detach_task()
8789 deactivate_task(env->src_rq, p, DEQUEUE_NOCLOCK); in detach_task()
8790 set_task_cpu(p, env->dst_cpu); in detach_task()
8799 static struct task_struct *detach_one_task(struct lb_env *env) in detach_one_task() argument
8803 lockdep_assert_rq_held(env->src_rq); in detach_one_task()
8806 &env->src_rq->cfs_tasks, se.group_node) { in detach_one_task()
8807 if (!can_migrate_task(p, env)) in detach_one_task()
8810 detach_task(p, env); in detach_one_task()
8818 schedstat_inc(env->sd->lb_gained[env->idle]); in detach_one_task()
8830 static int detach_tasks(struct lb_env *env) in detach_tasks() argument
8832 struct list_head *tasks = &env->src_rq->cfs_tasks; in detach_tasks()
8837 lockdep_assert_rq_held(env->src_rq); in detach_tasks()
8843 if (env->src_rq->nr_running <= 1) { in detach_tasks()
8844 env->flags &= ~LBF_ALL_PINNED; in detach_tasks()
8848 if (env->imbalance <= 0) in detach_tasks()
8856 if (env->idle != CPU_NOT_IDLE && env->src_rq->nr_running <= 1) in detach_tasks()
8859 env->loop++; in detach_tasks()
8864 if (env->loop > env->loop_max && in detach_tasks()
8865 !(env->flags & LBF_ALL_PINNED)) in detach_tasks()
8869 if (env->loop > env->loop_break) { in detach_tasks()
8870 env->loop_break += SCHED_NR_MIGRATE_BREAK; in detach_tasks()
8871 env->flags |= LBF_NEED_BREAK; in detach_tasks()
8877 if (!can_migrate_task(p, env)) in detach_tasks()
8880 switch (env->migration_type) { in detach_tasks()
8892 load < 16 && !env->sd->nr_balance_failed) in detach_tasks()
8901 if (shr_bound(load, env->sd->nr_balance_failed) > env->imbalance) in detach_tasks()
8904 env->imbalance -= load; in detach_tasks()
8910 if (util > env->imbalance) in detach_tasks()
8913 env->imbalance -= util; in detach_tasks()
8917 env->imbalance--; in detach_tasks()
8922 if (task_fits_cpu(p, env->src_cpu)) in detach_tasks()
8925 env->imbalance = 0; in detach_tasks()
8929 detach_task(p, env); in detach_tasks()
8930 list_add(&p->se.group_node, &env->tasks); in detach_tasks()
8940 if (env->idle == CPU_NEWLY_IDLE) in detach_tasks()
8948 if (env->imbalance <= 0) in detach_tasks()
8961 schedstat_add(env->sd->lb_gained[env->idle], detached); in detach_tasks()
8996 static void attach_tasks(struct lb_env *env) in attach_tasks() argument
8998 struct list_head *tasks = &env->tasks; in attach_tasks()
9002 rq_lock(env->dst_rq, &rf); in attach_tasks()
9003 update_rq_clock(env->dst_rq); in attach_tasks()
9009 attach_task(env->dst_rq, p); in attach_tasks()
9012 rq_unlock(env->dst_rq, &rf); in attach_tasks()
9562 sched_asym(struct lb_env *env, struct sd_lb_stats *sds, struct sg_lb_stats *sgs, in sched_asym() argument
9566 if (!sched_use_asym_prio(env->sd, env->dst_cpu)) in sched_asym()
9578 return sched_asym_prefer(env->dst_cpu, group->asym_prefer_cpu); in sched_asym()
9592 static inline bool smt_balance(struct lb_env *env, struct sg_lb_stats *sgs, in smt_balance() argument
9595 if (env->idle == CPU_NOT_IDLE) in smt_balance()
9611 static inline long sibling_imbalance(struct lb_env *env, in sibling_imbalance() argument
9619 if (env->idle == CPU_NOT_IDLE || !busiest->sum_nr_running) in sibling_imbalance()
9667 static inline void update_sg_lb_stats(struct lb_env *env, in update_sg_lb_stats() argument
9679 for_each_cpu_and(i, sched_group_span(group), env->cpus) { in update_sg_lb_stats()
9713 if (env->sd->flags & SD_ASYM_CPUCAPACITY) { in update_sg_lb_stats()
9719 } else if ((env->idle != CPU_NOT_IDLE) && in update_sg_lb_stats()
9720 sched_reduced_capacity(rq, env->sd)) { in update_sg_lb_stats()
9732 if (!local_group && env->sd->flags & SD_ASYM_PACKING && in update_sg_lb_stats()
9733 env->idle != CPU_NOT_IDLE && sgs->sum_h_nr_running && in update_sg_lb_stats()
9734 sched_asym(env, sds, sgs, group)) { in update_sg_lb_stats()
9739 if (!local_group && smt_balance(env, sgs, group)) in update_sg_lb_stats()
9742 sgs->group_type = group_classify(env->sd->imbalance_pct, group, sgs); in update_sg_lb_stats()
9763 static bool update_sd_pick_busiest(struct lb_env *env, in update_sd_pick_busiest() argument
9780 if ((env->sd->flags & SD_ASYM_CPUCAPACITY) && in update_sd_pick_busiest()
9782 (!capacity_greater(capacity_of(env->dst_cpu), sg->sgc->max_capacity) || in update_sd_pick_busiest()
9899 if ((env->sd->flags & SD_ASYM_CPUCAPACITY) && in update_sd_pick_busiest()
9901 (capacity_greater(sg->sgc->min_capacity, capacity_of(env->dst_cpu)))) in update_sd_pick_busiest()
10271 static void update_idle_cpu_scan(struct lb_env *env, in update_idle_cpu_scan() argument
10285 if (!sched_feat(SIS_UTIL) || env->idle == CPU_NEWLY_IDLE) in update_idle_cpu_scan()
10288 llc_weight = per_cpu(sd_llc_size, env->dst_cpu); in update_idle_cpu_scan()
10289 if (env->sd->span_weight != llc_weight) in update_idle_cpu_scan()
10292 sd_share = rcu_dereference(per_cpu(sd_llc_shared, env->dst_cpu)); in update_idle_cpu_scan()
10329 pct = env->sd->imbalance_pct; in update_idle_cpu_scan()
10348 static inline void update_sd_lb_stats(struct lb_env *env, struct sd_lb_stats *sds) in update_sd_lb_stats() argument
10350 struct sched_group *sg = env->sd->groups; in update_sd_lb_stats()
10360 local_group = cpumask_test_cpu(env->dst_cpu, sched_group_span(sg)); in update_sd_lb_stats()
10365 if (env->idle != CPU_NEWLY_IDLE || in update_sd_lb_stats()
10367 update_group_capacity(env->sd, env->dst_cpu); in update_sd_lb_stats()
10370 update_sg_lb_stats(env, sds, sg, sgs, &sg_status); in update_sd_lb_stats()
10376 if (update_sd_pick_busiest(env, sds, sg, sgs)) { in update_sd_lb_stats()
10388 } while (sg != env->sd->groups); in update_sd_lb_stats()
10399 if (env->sd->flags & SD_NUMA) in update_sd_lb_stats()
10400 env->fbq_type = fbq_classify_group(&sds->busiest_stat); in update_sd_lb_stats()
10402 if (!env->sd->parent) { in update_sd_lb_stats()
10403 struct root_domain *rd = env->dst_rq->rd; in update_sd_lb_stats()
10412 struct root_domain *rd = env->dst_rq->rd; in update_sd_lb_stats()
10418 update_idle_cpu_scan(env, sum_util); in update_sd_lb_stats()
10427 static inline void calculate_imbalance(struct lb_env *env, struct sd_lb_stats *sds) in calculate_imbalance() argument
10435 if (env->sd->flags & SD_ASYM_CPUCAPACITY) { in calculate_imbalance()
10437 env->migration_type = migrate_misfit; in calculate_imbalance()
10438 env->imbalance = 1; in calculate_imbalance()
10444 env->migration_type = migrate_load; in calculate_imbalance()
10445 env->imbalance = busiest->group_misfit_task_load; in calculate_imbalance()
10455 env->migration_type = migrate_task; in calculate_imbalance()
10456 env->imbalance = busiest->sum_h_nr_running; in calculate_imbalance()
10462 env->migration_type = migrate_task; in calculate_imbalance()
10463 env->imbalance = 1; in calculate_imbalance()
10474 env->migration_type = migrate_task; in calculate_imbalance()
10475 env->imbalance = 1; in calculate_imbalance()
10485 !(env->sd->flags & SD_SHARE_PKG_RESOURCES)) { in calculate_imbalance()
10494 env->migration_type = migrate_util; in calculate_imbalance()
10495 env->imbalance = max(local->group_capacity, local->group_util) - in calculate_imbalance()
10505 if (env->idle != CPU_NOT_IDLE && env->imbalance == 0) { in calculate_imbalance()
10506 env->migration_type = migrate_task; in calculate_imbalance()
10507 env->imbalance = 1; in calculate_imbalance()
10518 env->migration_type = migrate_task; in calculate_imbalance()
10519 env->imbalance = sibling_imbalance(env, sds, busiest, local); in calculate_imbalance()
10526 env->migration_type = migrate_task; in calculate_imbalance()
10527 env->imbalance = max_t(long, 0, in calculate_imbalance()
10533 if (env->sd->flags & SD_NUMA) { in calculate_imbalance()
10534 env->imbalance = adjust_numa_imbalance(env->imbalance, in calculate_imbalance()
10536 env->sd->imb_numa_nr); in calculate_imbalance()
10541 env->imbalance >>= 1; in calculate_imbalance()
10564 env->imbalance = 0; in calculate_imbalance()
10576 env->imbalance = 0; in calculate_imbalance()
10590 env->migration_type = migrate_load; in calculate_imbalance()
10591 env->imbalance = min( in calculate_imbalance()
10629 static struct sched_group *find_busiest_group(struct lb_env *env) in find_busiest_group() argument
10640 update_sd_lb_stats(env, &sds); in find_busiest_group()
10653 struct root_domain *rd = env->dst_rq->rd; in find_busiest_group()
10707 env->sd->imbalance_pct * local->avg_load) in find_busiest_group()
10716 sibling_imbalance(env, &sds, busiest, local) > 1) in find_busiest_group()
10720 if (env->idle == CPU_NOT_IDLE) { in find_busiest_group()
10759 calculate_imbalance(env, &sds); in find_busiest_group()
10760 return env->imbalance ? sds.busiest : NULL; in find_busiest_group()
10763 env->imbalance = 0; in find_busiest_group()
10770 static struct rq *find_busiest_queue(struct lb_env *env, in find_busiest_queue() argument
10778 for_each_cpu_and(i, sched_group_span(group), env->cpus) { in find_busiest_queue()
10805 if (rt > env->fbq_type) in find_busiest_queue()
10820 if (env->sd->flags & SD_ASYM_CPUCAPACITY && in find_busiest_queue()
10821 !capacity_greater(capacity_of(env->dst_cpu), capacity) && in find_busiest_queue()
10832 if ((env->sd->flags & SD_ASYM_PACKING) && in find_busiest_queue()
10833 sched_use_asym_prio(env->sd, i) && in find_busiest_queue()
10834 sched_asym_prefer(i, env->dst_cpu) && in find_busiest_queue()
10838 switch (env->migration_type) { in find_busiest_queue()
10846 if (nr_running == 1 && load > env->imbalance && in find_busiest_queue()
10847 !check_cpu_capacity(rq, env->sd)) in find_busiest_queue()
10919 asym_active_balance(struct lb_env *env) in asym_active_balance() argument
10931 return env->idle != CPU_NOT_IDLE && (env->sd->flags & SD_ASYM_PACKING) && in asym_active_balance()
10932 sched_use_asym_prio(env->sd, env->dst_cpu) && in asym_active_balance()
10933 (sched_asym_prefer(env->dst_cpu, env->src_cpu) || in asym_active_balance()
10934 !sched_use_asym_prio(env->sd, env->src_cpu)); in asym_active_balance()
10938 imbalanced_active_balance(struct lb_env *env) in imbalanced_active_balance() argument
10940 struct sched_domain *sd = env->sd; in imbalanced_active_balance()
10947 if ((env->migration_type == migrate_task) && in imbalanced_active_balance()
10954 static int need_active_balance(struct lb_env *env) in need_active_balance() argument
10956 struct sched_domain *sd = env->sd; in need_active_balance()
10958 if (asym_active_balance(env)) in need_active_balance()
10961 if (imbalanced_active_balance(env)) in need_active_balance()
10970 if ((env->idle != CPU_NOT_IDLE) && in need_active_balance()
10971 (env->src_rq->cfs.h_nr_running == 1)) { in need_active_balance()
10972 if ((check_cpu_capacity(env->src_rq, sd)) && in need_active_balance()
10973 (capacity_of(env->src_cpu)*sd->imbalance_pct < capacity_of(env->dst_cpu)*100)) in need_active_balance()
10977 if (env->migration_type == migrate_misfit) in need_active_balance()
10985 static int should_we_balance(struct lb_env *env) in should_we_balance() argument
10988 struct sched_group *sg = env->sd->groups; in should_we_balance()
10995 if (!cpumask_test_cpu(env->dst_cpu, env->cpus)) in should_we_balance()
11005 if (env->idle == CPU_NEWLY_IDLE) { in should_we_balance()
11006 if (env->dst_rq->nr_running > 0 || env->dst_rq->ttwu_pending) in should_we_balance()
11013 for_each_cpu_and(cpu, swb_cpus, env->cpus) { in should_we_balance()
11022 if (!(env->sd->flags & SD_SHARE_CPUCAPACITY) && !is_core_idle(cpu)) { in should_we_balance()
11037 return cpu == env->dst_cpu; in should_we_balance()
11040 if (idle_smt == env->dst_cpu) in should_we_balance()
11044 return group_balance_cpu(sg) == env->dst_cpu; in should_we_balance()
11061 struct lb_env env = { in load_balance() local
11070 .tasks = LIST_HEAD_INIT(env.tasks), in load_balance()
11078 if (!should_we_balance(&env)) { in load_balance()
11083 group = find_busiest_group(&env); in load_balance()
11089 busiest = find_busiest_queue(&env, group); in load_balance()
11095 WARN_ON_ONCE(busiest == env.dst_rq); in load_balance()
11097 schedstat_add(sd->lb_imbalance[idle], env.imbalance); in load_balance()
11099 env.src_cpu = busiest->cpu; in load_balance()
11100 env.src_rq = busiest; in load_balance()
11104 env.flags |= LBF_ALL_PINNED; in load_balance()
11112 env.loop_max = min(sysctl_sched_nr_migrate, busiest->nr_running); in load_balance()
11122 cur_ld_moved = detach_tasks(&env); in load_balance()
11135 attach_tasks(&env); in load_balance()
11141 if (env.flags & LBF_NEED_BREAK) { in load_balance()
11142 env.flags &= ~LBF_NEED_BREAK; in load_balance()
11144 if (env.loop < busiest->nr_running) in load_balance()
11167 if ((env.flags & LBF_DST_PINNED) && env.imbalance > 0) { in load_balance()
11170 __cpumask_clear_cpu(env.dst_cpu, env.cpus); in load_balance()
11172 env.dst_rq = cpu_rq(env.new_dst_cpu); in load_balance()
11173 env.dst_cpu = env.new_dst_cpu; in load_balance()
11174 env.flags &= ~LBF_DST_PINNED; in load_balance()
11175 env.loop = 0; in load_balance()
11176 env.loop_break = SCHED_NR_MIGRATE_BREAK; in load_balance()
11191 if ((env.flags & LBF_SOME_PINNED) && env.imbalance > 0) in load_balance()
11196 if (unlikely(env.flags & LBF_ALL_PINNED)) { in load_balance()
11206 if (!cpumask_subset(cpus, env.dst_grpmask)) { in load_balance()
11207 env.loop = 0; in load_balance()
11208 env.loop_break = SCHED_NR_MIGRATE_BREAK; in load_balance()
11226 if (need_active_balance(&env)) { in load_balance()
11242 env.flags &= ~LBF_ALL_PINNED; in load_balance()
11266 if (likely(!active_balance) || need_active_balance(&env)) { in load_balance()
11279 if (sd_parent && !(env.flags & LBF_ALL_PINNED)) { in load_balance()
11305 if (env.idle == CPU_NEWLY_IDLE) in load_balance()
11309 if ((env.flags & LBF_ALL_PINNED && in load_balance()
11403 struct lb_env env = { in active_load_balance_cpu_stop() local
11416 p = detach_one_task(&env); in active_load_balance_cpu_stop()