Lines Matching refs:wq
201 struct workqueue_struct *wq; /* I: the owning workqueue */ member
357 static void workqueue_sysfs_unregister(struct workqueue_struct *wq);
367 #define assert_rcu_or_wq_mutex(wq) \ argument
369 !lockdep_is_held(&wq->mutex), \
372 #define assert_rcu_or_wq_mutex_or_pool_mutex(wq) \ argument
374 !lockdep_is_held(&wq->mutex) && \
427 #define for_each_pwq(pwq, wq) \ argument
428 list_for_each_entry_rcu((pwq), &(wq)->pwqs, pwqs_node, \
429 lockdep_is_held(&wq->mutex)) \
430 if (({ assert_rcu_or_wq_mutex(wq); false; })) { } \
564 static struct pool_workqueue *unbound_pwq_by_node(struct workqueue_struct *wq, in unbound_pwq_by_node() argument
567 assert_rcu_or_wq_mutex_or_pool_mutex(wq); in unbound_pwq_by_node()
576 return wq->dfl_pwq; in unbound_pwq_by_node()
578 return rcu_dereference_raw(wq->numa_pwq_tbl[node]); in unbound_pwq_by_node()
1109 if (WARN_ON_ONCE(!(pwq->wq->flags & WQ_UNBOUND))) in put_pwq()
1202 if (atomic_dec_and_test(&pwq->wq->nr_pwqs_to_flush)) in pwq_dec_nr_in_flight()
1203 complete(&pwq->wq->first_flusher->done); in pwq_dec_nr_in_flight()
1350 static bool is_chained_work(struct workqueue_struct *wq) in is_chained_work() argument
1359 return worker && worker->current_pwq->wq == wq; in is_chained_work()
1395 static void __queue_work(int cpu, struct workqueue_struct *wq, in __queue_work() argument
1415 if (unlikely(wq->flags & __WQ_DRAINING) && in __queue_work()
1416 WARN_ON_ONCE(!is_chained_work(wq))) in __queue_work()
1424 if (!(wq->flags & WQ_UNBOUND)) in __queue_work()
1425 pwq = per_cpu_ptr(wq->cpu_pwqs, cpu); in __queue_work()
1427 pwq = unbound_pwq_by_node(wq, cpu_to_node(cpu)); in __queue_work()
1442 if (worker && worker->current_pwq->wq == wq) { in __queue_work()
1462 if (wq->flags & WQ_UNBOUND) { in __queue_work()
1469 wq->name, cpu); in __queue_work()
1510 bool queue_work_on(int cpu, struct workqueue_struct *wq, in queue_work_on() argument
1519 __queue_work(cpu, wq, work); in queue_work_on()
1581 bool queue_work_node(int node, struct workqueue_struct *wq, in queue_work_node() argument
1596 WARN_ON_ONCE(!(wq->flags & WQ_UNBOUND)); in queue_work_node()
1603 __queue_work(cpu, wq, work); in queue_work_node()
1617 __queue_work(dwork->cpu, dwork->wq, &dwork->work); in delayed_work_timer_fn()
1621 static void __queue_delayed_work(int cpu, struct workqueue_struct *wq, in __queue_delayed_work() argument
1627 WARN_ON_ONCE(!wq); in __queue_delayed_work()
1639 __queue_work(cpu, wq, &dwork->work); in __queue_delayed_work()
1643 dwork->wq = wq; in __queue_delayed_work()
1664 bool queue_delayed_work_on(int cpu, struct workqueue_struct *wq, in queue_delayed_work_on() argument
1675 __queue_delayed_work(cpu, wq, dwork, delay); in queue_delayed_work_on()
1702 bool mod_delayed_work_on(int cpu, struct workqueue_struct *wq, in mod_delayed_work_on() argument
1713 __queue_delayed_work(cpu, wq, dwork, delay); in mod_delayed_work_on()
1728 __queue_work(WORK_CPU_UNBOUND, rwork->wq, &rwork->work); in rcu_work_rcufn()
1742 bool queue_rcu_work(struct workqueue_struct *wq, struct rcu_work *rwork) in queue_rcu_work() argument
1747 rwork->wq = wq; in queue_rcu_work()
2015 struct workqueue_struct *wq = pwq->wq; in send_mayday() local
2019 if (!wq->rescuer) in send_mayday()
2030 list_add_tail(&pwq->mayday_node, &wq->maydays); in send_mayday()
2031 wake_up_process(wq->rescuer->task); in send_mayday()
2169 bool cpu_intensive = pwq->wq->flags & WQ_CPU_INTENSIVE; in process_one_work()
2212 strscpy(worker->desc, pwq->wq->name, WORKER_DESC_LEN); in process_one_work()
2245 lock_map_acquire(&pwq->wq->lockdep_map); in process_one_work()
2277 lock_map_release(&pwq->wq->lockdep_map); in process_one_work()
2465 struct workqueue_struct *wq = rescuer->rescue_wq; in rescuer_thread() local
2492 while (!list_empty(&wq->maydays)) { in rescuer_thread()
2493 struct pool_workqueue *pwq = list_first_entry(&wq->maydays, in rescuer_thread()
2540 if (wq->rescuer && list_empty(&pwq->mayday_node)) { in rescuer_thread()
2542 list_add_tail(&pwq->mayday_node, &wq->maydays); in rescuer_thread()
2608 WARN_ONCE(worker && ((worker->current_pwq->wq->flags & in check_flush_dependency()
2611 worker->current_pwq->wq->name, worker->current_func, in check_flush_dependency()
2722 static bool flush_workqueue_prep_pwqs(struct workqueue_struct *wq, in flush_workqueue_prep_pwqs() argument
2729 WARN_ON_ONCE(atomic_read(&wq->nr_pwqs_to_flush)); in flush_workqueue_prep_pwqs()
2730 atomic_set(&wq->nr_pwqs_to_flush, 1); in flush_workqueue_prep_pwqs()
2733 for_each_pwq(pwq, wq) { in flush_workqueue_prep_pwqs()
2743 atomic_inc(&wq->nr_pwqs_to_flush); in flush_workqueue_prep_pwqs()
2756 if (flush_color >= 0 && atomic_dec_and_test(&wq->nr_pwqs_to_flush)) in flush_workqueue_prep_pwqs()
2757 complete(&wq->first_flusher->done); in flush_workqueue_prep_pwqs()
2769 void flush_workqueue(struct workqueue_struct *wq) in flush_workqueue() argument
2774 .done = COMPLETION_INITIALIZER_ONSTACK_MAP(this_flusher.done, wq->lockdep_map), in flush_workqueue()
2781 lock_map_acquire(&wq->lockdep_map); in flush_workqueue()
2782 lock_map_release(&wq->lockdep_map); in flush_workqueue()
2784 mutex_lock(&wq->mutex); in flush_workqueue()
2789 next_color = work_next_color(wq->work_color); in flush_workqueue()
2791 if (next_color != wq->flush_color) { in flush_workqueue()
2797 WARN_ON_ONCE(!list_empty(&wq->flusher_overflow)); in flush_workqueue()
2798 this_flusher.flush_color = wq->work_color; in flush_workqueue()
2799 wq->work_color = next_color; in flush_workqueue()
2801 if (!wq->first_flusher) { in flush_workqueue()
2803 WARN_ON_ONCE(wq->flush_color != this_flusher.flush_color); in flush_workqueue()
2805 wq->first_flusher = &this_flusher; in flush_workqueue()
2807 if (!flush_workqueue_prep_pwqs(wq, wq->flush_color, in flush_workqueue()
2808 wq->work_color)) { in flush_workqueue()
2810 wq->flush_color = next_color; in flush_workqueue()
2811 wq->first_flusher = NULL; in flush_workqueue()
2816 WARN_ON_ONCE(wq->flush_color == this_flusher.flush_color); in flush_workqueue()
2817 list_add_tail(&this_flusher.list, &wq->flusher_queue); in flush_workqueue()
2818 flush_workqueue_prep_pwqs(wq, -1, wq->work_color); in flush_workqueue()
2826 list_add_tail(&this_flusher.list, &wq->flusher_overflow); in flush_workqueue()
2829 check_flush_dependency(wq, NULL); in flush_workqueue()
2831 mutex_unlock(&wq->mutex); in flush_workqueue()
2841 if (wq->first_flusher != &this_flusher) in flush_workqueue()
2844 mutex_lock(&wq->mutex); in flush_workqueue()
2847 if (wq->first_flusher != &this_flusher) in flush_workqueue()
2850 wq->first_flusher = NULL; in flush_workqueue()
2853 WARN_ON_ONCE(wq->flush_color != this_flusher.flush_color); in flush_workqueue()
2859 list_for_each_entry_safe(next, tmp, &wq->flusher_queue, list) { in flush_workqueue()
2860 if (next->flush_color != wq->flush_color) in flush_workqueue()
2866 WARN_ON_ONCE(!list_empty(&wq->flusher_overflow) && in flush_workqueue()
2867 wq->flush_color != work_next_color(wq->work_color)); in flush_workqueue()
2870 wq->flush_color = work_next_color(wq->flush_color); in flush_workqueue()
2873 if (!list_empty(&wq->flusher_overflow)) { in flush_workqueue()
2880 list_for_each_entry(tmp, &wq->flusher_overflow, list) in flush_workqueue()
2881 tmp->flush_color = wq->work_color; in flush_workqueue()
2883 wq->work_color = work_next_color(wq->work_color); in flush_workqueue()
2885 list_splice_tail_init(&wq->flusher_overflow, in flush_workqueue()
2886 &wq->flusher_queue); in flush_workqueue()
2887 flush_workqueue_prep_pwqs(wq, -1, wq->work_color); in flush_workqueue()
2890 if (list_empty(&wq->flusher_queue)) { in flush_workqueue()
2891 WARN_ON_ONCE(wq->flush_color != wq->work_color); in flush_workqueue()
2899 WARN_ON_ONCE(wq->flush_color == wq->work_color); in flush_workqueue()
2900 WARN_ON_ONCE(wq->flush_color != next->flush_color); in flush_workqueue()
2903 wq->first_flusher = next; in flush_workqueue()
2905 if (flush_workqueue_prep_pwqs(wq, wq->flush_color, -1)) in flush_workqueue()
2912 wq->first_flusher = NULL; in flush_workqueue()
2916 mutex_unlock(&wq->mutex); in flush_workqueue()
2931 void drain_workqueue(struct workqueue_struct *wq) in drain_workqueue() argument
2941 mutex_lock(&wq->mutex); in drain_workqueue()
2942 if (!wq->nr_drainers++) in drain_workqueue()
2943 wq->flags |= __WQ_DRAINING; in drain_workqueue()
2944 mutex_unlock(&wq->mutex); in drain_workqueue()
2946 flush_workqueue(wq); in drain_workqueue()
2948 mutex_lock(&wq->mutex); in drain_workqueue()
2950 for_each_pwq(pwq, wq) { in drain_workqueue()
2963 wq->name, flush_cnt); in drain_workqueue()
2965 mutex_unlock(&wq->mutex); in drain_workqueue()
2969 if (!--wq->nr_drainers) in drain_workqueue()
2970 wq->flags &= ~__WQ_DRAINING; in drain_workqueue()
2971 mutex_unlock(&wq->mutex); in drain_workqueue()
3004 check_flush_dependency(pwq->wq, work); in start_flush_work()
3019 (pwq->wq->saved_max_active == 1 || pwq->wq->rescuer)) { in start_flush_work()
3020 lock_map_acquire(&pwq->wq->lockdep_map); in start_flush_work()
3021 lock_map_release(&pwq->wq->lockdep_map); in start_flush_work()
3190 __queue_work(dwork->cpu, dwork->wq, &dwork->work); in flush_delayed_work()
3447 static void wq_init_lockdep(struct workqueue_struct *wq) in wq_init_lockdep() argument
3451 lockdep_register_key(&wq->key); in wq_init_lockdep()
3452 lock_name = kasprintf(GFP_KERNEL, "%s%s", "(wq_completion)", wq->name); in wq_init_lockdep()
3454 lock_name = wq->name; in wq_init_lockdep()
3456 wq->lock_name = lock_name; in wq_init_lockdep()
3457 lockdep_init_map(&wq->lockdep_map, lock_name, &wq->key, 0); in wq_init_lockdep()
3460 static void wq_unregister_lockdep(struct workqueue_struct *wq) in wq_unregister_lockdep() argument
3462 lockdep_unregister_key(&wq->key); in wq_unregister_lockdep()
3465 static void wq_free_lockdep(struct workqueue_struct *wq) in wq_free_lockdep() argument
3467 if (wq->lock_name != wq->name) in wq_free_lockdep()
3468 kfree(wq->lock_name); in wq_free_lockdep()
3471 static void wq_init_lockdep(struct workqueue_struct *wq) in wq_init_lockdep() argument
3475 static void wq_unregister_lockdep(struct workqueue_struct *wq) in wq_unregister_lockdep() argument
3479 static void wq_free_lockdep(struct workqueue_struct *wq) in wq_free_lockdep() argument
3486 struct workqueue_struct *wq = in rcu_free_wq() local
3489 wq_free_lockdep(wq); in rcu_free_wq()
3491 if (!(wq->flags & WQ_UNBOUND)) in rcu_free_wq()
3492 free_percpu(wq->cpu_pwqs); in rcu_free_wq()
3494 free_workqueue_attrs(wq->unbound_attrs); in rcu_free_wq()
3496 kfree(wq->rescuer); in rcu_free_wq()
3497 kfree(wq); in rcu_free_wq()
3659 struct workqueue_struct *wq = pwq->wq; in pwq_unbound_release_workfn() local
3663 if (WARN_ON_ONCE(!(wq->flags & WQ_UNBOUND))) in pwq_unbound_release_workfn()
3666 mutex_lock(&wq->mutex); in pwq_unbound_release_workfn()
3668 is_last = list_empty(&wq->pwqs); in pwq_unbound_release_workfn()
3669 mutex_unlock(&wq->mutex); in pwq_unbound_release_workfn()
3682 wq_unregister_lockdep(wq); in pwq_unbound_release_workfn()
3683 call_rcu(&wq->rcu, rcu_free_wq); in pwq_unbound_release_workfn()
3697 struct workqueue_struct *wq = pwq->wq; in pwq_adjust_max_active() local
3698 bool freezable = wq->flags & WQ_FREEZABLE; in pwq_adjust_max_active()
3702 lockdep_assert_held(&wq->mutex); in pwq_adjust_max_active()
3705 if (!freezable && pwq->max_active == wq->saved_max_active) in pwq_adjust_max_active()
3717 pwq->max_active = wq->saved_max_active; in pwq_adjust_max_active()
3736 static void init_pwq(struct pool_workqueue *pwq, struct workqueue_struct *wq, in init_pwq() argument
3744 pwq->wq = wq; in init_pwq()
3756 struct workqueue_struct *wq = pwq->wq; in link_pwq() local
3758 lockdep_assert_held(&wq->mutex); in link_pwq()
3765 pwq->work_color = wq->work_color; in link_pwq()
3771 list_add_rcu(&pwq->pwqs_node, &wq->pwqs); in link_pwq()
3775 static struct pool_workqueue *alloc_unbound_pwq(struct workqueue_struct *wq, in alloc_unbound_pwq() argument
3793 init_pwq(pwq, wq, pool); in alloc_unbound_pwq()
3850 static struct pool_workqueue *numa_pwq_tbl_install(struct workqueue_struct *wq, in numa_pwq_tbl_install() argument
3857 lockdep_assert_held(&wq->mutex); in numa_pwq_tbl_install()
3862 old_pwq = rcu_access_pointer(wq->numa_pwq_tbl[node]); in numa_pwq_tbl_install()
3863 rcu_assign_pointer(wq->numa_pwq_tbl[node], pwq); in numa_pwq_tbl_install()
3869 struct workqueue_struct *wq; /* target workqueue */ member
3894 apply_wqattrs_prepare(struct workqueue_struct *wq, in apply_wqattrs_prepare() argument
3932 ctx->dfl_pwq = alloc_unbound_pwq(wq, new_attrs); in apply_wqattrs_prepare()
3938 ctx->pwq_tbl[node] = alloc_unbound_pwq(wq, tmp_attrs); in apply_wqattrs_prepare()
3952 ctx->wq = wq; in apply_wqattrs_prepare()
3969 mutex_lock(&ctx->wq->mutex); in apply_wqattrs_commit()
3971 copy_workqueue_attrs(ctx->wq->unbound_attrs, ctx->attrs); in apply_wqattrs_commit()
3975 ctx->pwq_tbl[node] = numa_pwq_tbl_install(ctx->wq, node, in apply_wqattrs_commit()
3980 swap(ctx->wq->dfl_pwq, ctx->dfl_pwq); in apply_wqattrs_commit()
3982 mutex_unlock(&ctx->wq->mutex); in apply_wqattrs_commit()
3998 static int apply_workqueue_attrs_locked(struct workqueue_struct *wq, in apply_workqueue_attrs_locked() argument
4004 if (WARN_ON(!(wq->flags & WQ_UNBOUND))) in apply_workqueue_attrs_locked()
4008 if (!list_empty(&wq->pwqs)) { in apply_workqueue_attrs_locked()
4009 if (WARN_ON(wq->flags & __WQ_ORDERED_EXPLICIT)) in apply_workqueue_attrs_locked()
4012 wq->flags &= ~__WQ_ORDERED; in apply_workqueue_attrs_locked()
4015 ctx = apply_wqattrs_prepare(wq, attrs); in apply_workqueue_attrs_locked()
4044 int apply_workqueue_attrs(struct workqueue_struct *wq, in apply_workqueue_attrs() argument
4052 ret = apply_workqueue_attrs_locked(wq, attrs); in apply_workqueue_attrs()
4080 static void wq_update_unbound_numa(struct workqueue_struct *wq, int cpu, in wq_update_unbound_numa() argument
4091 if (!wq_numa_enabled || !(wq->flags & WQ_UNBOUND) || in wq_update_unbound_numa()
4092 wq->unbound_attrs->no_numa) in wq_update_unbound_numa()
4103 copy_workqueue_attrs(target_attrs, wq->unbound_attrs); in wq_update_unbound_numa()
4104 pwq = unbound_pwq_by_node(wq, node); in wq_update_unbound_numa()
4112 if (wq_calc_node_cpumask(wq->dfl_pwq->pool->attrs, node, cpu_off, cpumask)) { in wq_update_unbound_numa()
4120 pwq = alloc_unbound_pwq(wq, target_attrs); in wq_update_unbound_numa()
4123 wq->name); in wq_update_unbound_numa()
4128 mutex_lock(&wq->mutex); in wq_update_unbound_numa()
4129 old_pwq = numa_pwq_tbl_install(wq, node, pwq); in wq_update_unbound_numa()
4133 mutex_lock(&wq->mutex); in wq_update_unbound_numa()
4134 spin_lock_irq(&wq->dfl_pwq->pool->lock); in wq_update_unbound_numa()
4135 get_pwq(wq->dfl_pwq); in wq_update_unbound_numa()
4136 spin_unlock_irq(&wq->dfl_pwq->pool->lock); in wq_update_unbound_numa()
4137 old_pwq = numa_pwq_tbl_install(wq, node, wq->dfl_pwq); in wq_update_unbound_numa()
4139 mutex_unlock(&wq->mutex); in wq_update_unbound_numa()
4143 static int alloc_and_link_pwqs(struct workqueue_struct *wq) in alloc_and_link_pwqs() argument
4145 bool highpri = wq->flags & WQ_HIGHPRI; in alloc_and_link_pwqs()
4148 if (!(wq->flags & WQ_UNBOUND)) { in alloc_and_link_pwqs()
4149 wq->cpu_pwqs = alloc_percpu(struct pool_workqueue); in alloc_and_link_pwqs()
4150 if (!wq->cpu_pwqs) in alloc_and_link_pwqs()
4155 per_cpu_ptr(wq->cpu_pwqs, cpu); in alloc_and_link_pwqs()
4159 init_pwq(pwq, wq, &cpu_pools[highpri]); in alloc_and_link_pwqs()
4161 mutex_lock(&wq->mutex); in alloc_and_link_pwqs()
4163 mutex_unlock(&wq->mutex); in alloc_and_link_pwqs()
4169 if (wq->flags & __WQ_ORDERED) { in alloc_and_link_pwqs()
4170 ret = apply_workqueue_attrs(wq, ordered_wq_attrs[highpri]); in alloc_and_link_pwqs()
4172 WARN(!ret && (wq->pwqs.next != &wq->dfl_pwq->pwqs_node || in alloc_and_link_pwqs()
4173 wq->pwqs.prev != &wq->dfl_pwq->pwqs_node), in alloc_and_link_pwqs()
4174 "ordering guarantee broken for workqueue %s\n", wq->name); in alloc_and_link_pwqs()
4176 ret = apply_workqueue_attrs(wq, unbound_std_wq_attrs[highpri]); in alloc_and_link_pwqs()
4199 static int init_rescuer(struct workqueue_struct *wq) in init_rescuer() argument
4204 if (!(wq->flags & WQ_MEM_RECLAIM)) in init_rescuer()
4211 rescuer->rescue_wq = wq; in init_rescuer()
4212 rescuer->task = kthread_create(rescuer_thread, rescuer, "%s", wq->name); in init_rescuer()
4219 wq->rescuer = rescuer; in init_rescuer()
4233 struct workqueue_struct *wq; in alloc_workqueue() local
4252 tbl_size = nr_node_ids * sizeof(wq->numa_pwq_tbl[0]); in alloc_workqueue()
4254 wq = kzalloc(sizeof(*wq) + tbl_size, GFP_KERNEL); in alloc_workqueue()
4255 if (!wq) in alloc_workqueue()
4259 wq->unbound_attrs = alloc_workqueue_attrs(); in alloc_workqueue()
4260 if (!wq->unbound_attrs) in alloc_workqueue()
4265 vsnprintf(wq->name, sizeof(wq->name), fmt, args); in alloc_workqueue()
4269 max_active = wq_clamp_max_active(max_active, flags, wq->name); in alloc_workqueue()
4272 wq->flags = flags; in alloc_workqueue()
4273 wq->saved_max_active = max_active; in alloc_workqueue()
4274 mutex_init(&wq->mutex); in alloc_workqueue()
4275 atomic_set(&wq->nr_pwqs_to_flush, 0); in alloc_workqueue()
4276 INIT_LIST_HEAD(&wq->pwqs); in alloc_workqueue()
4277 INIT_LIST_HEAD(&wq->flusher_queue); in alloc_workqueue()
4278 INIT_LIST_HEAD(&wq->flusher_overflow); in alloc_workqueue()
4279 INIT_LIST_HEAD(&wq->maydays); in alloc_workqueue()
4281 wq_init_lockdep(wq); in alloc_workqueue()
4282 INIT_LIST_HEAD(&wq->list); in alloc_workqueue()
4284 if (alloc_and_link_pwqs(wq) < 0) in alloc_workqueue()
4287 if (wq_online && init_rescuer(wq) < 0) in alloc_workqueue()
4290 if ((wq->flags & WQ_SYSFS) && workqueue_sysfs_register(wq)) in alloc_workqueue()
4300 mutex_lock(&wq->mutex); in alloc_workqueue()
4301 for_each_pwq(pwq, wq) in alloc_workqueue()
4303 mutex_unlock(&wq->mutex); in alloc_workqueue()
4305 list_add_tail_rcu(&wq->list, &workqueues); in alloc_workqueue()
4309 return wq; in alloc_workqueue()
4312 wq_unregister_lockdep(wq); in alloc_workqueue()
4313 wq_free_lockdep(wq); in alloc_workqueue()
4315 free_workqueue_attrs(wq->unbound_attrs); in alloc_workqueue()
4316 kfree(wq); in alloc_workqueue()
4319 destroy_workqueue(wq); in alloc_workqueue()
4330 void destroy_workqueue(struct workqueue_struct *wq) in destroy_workqueue() argument
4339 workqueue_sysfs_unregister(wq); in destroy_workqueue()
4342 drain_workqueue(wq); in destroy_workqueue()
4345 if (wq->rescuer) { in destroy_workqueue()
4346 struct worker *rescuer = wq->rescuer; in destroy_workqueue()
4350 wq->rescuer = NULL; in destroy_workqueue()
4359 mutex_lock(&wq->mutex); in destroy_workqueue()
4360 for_each_pwq(pwq, wq) { in destroy_workqueue()
4365 mutex_unlock(&wq->mutex); in destroy_workqueue()
4371 if (WARN_ON((pwq != wq->dfl_pwq) && (pwq->refcnt > 1)) || in destroy_workqueue()
4374 mutex_unlock(&wq->mutex); in destroy_workqueue()
4379 mutex_unlock(&wq->mutex); in destroy_workqueue()
4386 list_del_rcu(&wq->list); in destroy_workqueue()
4389 if (!(wq->flags & WQ_UNBOUND)) { in destroy_workqueue()
4390 wq_unregister_lockdep(wq); in destroy_workqueue()
4395 call_rcu(&wq->rcu, rcu_free_wq); in destroy_workqueue()
4403 pwq = rcu_access_pointer(wq->numa_pwq_tbl[node]); in destroy_workqueue()
4404 RCU_INIT_POINTER(wq->numa_pwq_tbl[node], NULL); in destroy_workqueue()
4412 pwq = wq->dfl_pwq; in destroy_workqueue()
4413 wq->dfl_pwq = NULL; in destroy_workqueue()
4429 void workqueue_set_max_active(struct workqueue_struct *wq, int max_active) in workqueue_set_max_active() argument
4434 if (WARN_ON(wq->flags & __WQ_ORDERED_EXPLICIT)) in workqueue_set_max_active()
4437 max_active = wq_clamp_max_active(max_active, wq->flags, wq->name); in workqueue_set_max_active()
4439 mutex_lock(&wq->mutex); in workqueue_set_max_active()
4441 wq->flags &= ~__WQ_ORDERED; in workqueue_set_max_active()
4442 wq->saved_max_active = max_active; in workqueue_set_max_active()
4444 for_each_pwq(pwq, wq) in workqueue_set_max_active()
4447 mutex_unlock(&wq->mutex); in workqueue_set_max_active()
4500 bool workqueue_congested(int cpu, struct workqueue_struct *wq) in workqueue_congested() argument
4511 if (!(wq->flags & WQ_UNBOUND)) in workqueue_congested()
4512 pwq = per_cpu_ptr(wq->cpu_pwqs, cpu); in workqueue_congested()
4514 pwq = unbound_pwq_by_node(wq, cpu_to_node(cpu)); in workqueue_congested()
4600 struct workqueue_struct *wq = NULL; in print_worker_info() local
4618 probe_kernel_read(&wq, &pwq->wq, sizeof(wq)); in print_worker_info()
4619 probe_kernel_read(name, wq->name, sizeof(name) - 1); in print_worker_info()
4683 worker == pwq->wq->rescuer ? "(RESCUER)" : "", in show_pwq()
4732 struct workqueue_struct *wq; in show_workqueue_state() local
4741 list_for_each_entry_rcu(wq, &workqueues, list) { in show_workqueue_state()
4745 for_each_pwq(pwq, wq) { in show_workqueue_state()
4754 pr_info("workqueue %s: flags=0x%x\n", wq->name, wq->flags); in show_workqueue_state()
4756 for_each_pwq(pwq, wq) { in show_workqueue_state()
5023 struct workqueue_struct *wq; in workqueue_online_cpu() local
5040 list_for_each_entry(wq, &workqueues, list) in workqueue_online_cpu()
5041 wq_update_unbound_numa(wq, cpu, true); in workqueue_online_cpu()
5049 struct workqueue_struct *wq; in workqueue_offline_cpu() local
5059 list_for_each_entry(wq, &workqueues, list) in workqueue_offline_cpu()
5060 wq_update_unbound_numa(wq, cpu, false); in workqueue_offline_cpu()
5141 struct workqueue_struct *wq; in freeze_workqueues_begin() local
5149 list_for_each_entry(wq, &workqueues, list) { in freeze_workqueues_begin()
5150 mutex_lock(&wq->mutex); in freeze_workqueues_begin()
5151 for_each_pwq(pwq, wq) in freeze_workqueues_begin()
5153 mutex_unlock(&wq->mutex); in freeze_workqueues_begin()
5175 struct workqueue_struct *wq; in freeze_workqueues_busy() local
5182 list_for_each_entry(wq, &workqueues, list) { in freeze_workqueues_busy()
5183 if (!(wq->flags & WQ_FREEZABLE)) in freeze_workqueues_busy()
5190 for_each_pwq(pwq, wq) { in freeze_workqueues_busy()
5216 struct workqueue_struct *wq; in thaw_workqueues() local
5227 list_for_each_entry(wq, &workqueues, list) { in thaw_workqueues()
5228 mutex_lock(&wq->mutex); in thaw_workqueues()
5229 for_each_pwq(pwq, wq) in thaw_workqueues()
5231 mutex_unlock(&wq->mutex); in thaw_workqueues()
5243 struct workqueue_struct *wq; in workqueue_apply_unbound_cpumask() local
5248 list_for_each_entry(wq, &workqueues, list) { in workqueue_apply_unbound_cpumask()
5249 if (!(wq->flags & WQ_UNBOUND)) in workqueue_apply_unbound_cpumask()
5252 if (wq->flags & __WQ_ORDERED) in workqueue_apply_unbound_cpumask()
5255 ctx = apply_wqattrs_prepare(wq, wq->unbound_attrs); in workqueue_apply_unbound_cpumask()
5336 struct workqueue_struct *wq; member
5344 return wq_dev->wq; in dev_to_wq()
5350 struct workqueue_struct *wq = dev_to_wq(dev); in per_cpu_show() local
5352 return scnprintf(buf, PAGE_SIZE, "%d\n", (bool)!(wq->flags & WQ_UNBOUND)); in per_cpu_show()
5359 struct workqueue_struct *wq = dev_to_wq(dev); in max_active_show() local
5361 return scnprintf(buf, PAGE_SIZE, "%d\n", wq->saved_max_active); in max_active_show()
5368 struct workqueue_struct *wq = dev_to_wq(dev); in max_active_store() local
5374 workqueue_set_max_active(wq, val); in max_active_store()
5389 struct workqueue_struct *wq = dev_to_wq(dev); in wq_pool_ids_show() local
5398 unbound_pwq_by_node(wq, node)->pool->id); in wq_pool_ids_show()
5411 struct workqueue_struct *wq = dev_to_wq(dev); in wq_nice_show() local
5414 mutex_lock(&wq->mutex); in wq_nice_show()
5415 written = scnprintf(buf, PAGE_SIZE, "%d\n", wq->unbound_attrs->nice); in wq_nice_show()
5416 mutex_unlock(&wq->mutex); in wq_nice_show()
5422 static struct workqueue_attrs *wq_sysfs_prep_attrs(struct workqueue_struct *wq) in wq_sysfs_prep_attrs() argument
5432 copy_workqueue_attrs(attrs, wq->unbound_attrs); in wq_sysfs_prep_attrs()
5439 struct workqueue_struct *wq = dev_to_wq(dev); in wq_nice_store() local
5445 attrs = wq_sysfs_prep_attrs(wq); in wq_nice_store()
5451 ret = apply_workqueue_attrs_locked(wq, attrs); in wq_nice_store()
5464 struct workqueue_struct *wq = dev_to_wq(dev); in wq_cpumask_show() local
5467 mutex_lock(&wq->mutex); in wq_cpumask_show()
5469 cpumask_pr_args(wq->unbound_attrs->cpumask)); in wq_cpumask_show()
5470 mutex_unlock(&wq->mutex); in wq_cpumask_show()
5478 struct workqueue_struct *wq = dev_to_wq(dev); in wq_cpumask_store() local
5484 attrs = wq_sysfs_prep_attrs(wq); in wq_cpumask_store()
5490 ret = apply_workqueue_attrs_locked(wq, attrs); in wq_cpumask_store()
5501 struct workqueue_struct *wq = dev_to_wq(dev); in wq_numa_show() local
5504 mutex_lock(&wq->mutex); in wq_numa_show()
5506 !wq->unbound_attrs->no_numa); in wq_numa_show()
5507 mutex_unlock(&wq->mutex); in wq_numa_show()
5515 struct workqueue_struct *wq = dev_to_wq(dev); in wq_numa_store() local
5521 attrs = wq_sysfs_prep_attrs(wq); in wq_numa_store()
5528 ret = apply_workqueue_attrs_locked(wq, attrs); in wq_numa_store()
5618 int workqueue_sysfs_register(struct workqueue_struct *wq) in workqueue_sysfs_register() argument
5628 if (WARN_ON(wq->flags & __WQ_ORDERED_EXPLICIT)) in workqueue_sysfs_register()
5631 wq->wq_dev = wq_dev = kzalloc(sizeof(*wq_dev), GFP_KERNEL); in workqueue_sysfs_register()
5635 wq_dev->wq = wq; in workqueue_sysfs_register()
5638 dev_set_name(&wq_dev->dev, "%s", wq->name); in workqueue_sysfs_register()
5649 wq->wq_dev = NULL; in workqueue_sysfs_register()
5653 if (wq->flags & WQ_UNBOUND) { in workqueue_sysfs_register()
5660 wq->wq_dev = NULL; in workqueue_sysfs_register()
5677 static void workqueue_sysfs_unregister(struct workqueue_struct *wq) in workqueue_sysfs_unregister() argument
5679 struct wq_device *wq_dev = wq->wq_dev; in workqueue_sysfs_unregister()
5681 if (!wq->wq_dev) in workqueue_sysfs_unregister()
5684 wq->wq_dev = NULL; in workqueue_sysfs_unregister()
5688 static void workqueue_sysfs_unregister(struct workqueue_struct *wq) { } in workqueue_sysfs_unregister() argument
5971 struct workqueue_struct *wq; in workqueue_init() local
5994 list_for_each_entry(wq, &workqueues, list) { in workqueue_init()
5995 wq_update_unbound_numa(wq, smp_processor_id(), true); in workqueue_init()
5996 WARN(init_rescuer(wq), in workqueue_init()
5998 wq->name); in workqueue_init()