| /* |
| * Rated submission helpers |
| * |
| * Copyright (C) 2015 Jens Axboe <axboe@kernel.dk> |
| * |
| */ |
| #include "fio.h" |
| #include "ioengines.h" |
| #include "lib/getrusage.h" |
| #include "rate-submit.h" |
| |
| static int io_workqueue_fn(struct submit_worker *sw, |
| struct workqueue_work *work) |
| { |
| struct io_u *io_u = container_of(work, struct io_u, work); |
| const enum fio_ddir ddir = io_u->ddir; |
| struct thread_data *td = sw->priv; |
| int ret; |
| |
| dprint(FD_RATE, "io_u %p queued by %u\n", io_u, gettid()); |
| |
| io_u_set(td, io_u, IO_U_F_NO_FILE_PUT); |
| |
| td->cur_depth++; |
| |
| do { |
| ret = td_io_queue(td, io_u); |
| if (ret != FIO_Q_BUSY) |
| break; |
| ret = io_u_queued_complete(td, 1); |
| if (ret > 0) |
| td->cur_depth -= ret; |
| io_u_clear(td, io_u, IO_U_F_FLIGHT); |
| } while (1); |
| |
| dprint(FD_RATE, "io_u %p ret %d by %u\n", io_u, ret, gettid()); |
| |
| io_queue_event(td, io_u, &ret, ddir, NULL, 0, NULL); |
| |
| if (ret == FIO_Q_COMPLETED) |
| td->cur_depth--; |
| else if (ret == FIO_Q_QUEUED) { |
| unsigned int min_evts; |
| |
| if (td->o.iodepth == 1) |
| min_evts = 1; |
| else |
| min_evts = 0; |
| |
| ret = io_u_queued_complete(td, min_evts); |
| if (ret > 0) |
| td->cur_depth -= ret; |
| } else if (ret == FIO_Q_BUSY) { |
| ret = io_u_queued_complete(td, td->cur_depth); |
| if (ret > 0) |
| td->cur_depth -= ret; |
| } |
| |
| return 0; |
| } |
| |
| static bool io_workqueue_pre_sleep_flush_fn(struct submit_worker *sw) |
| { |
| struct thread_data *td = sw->priv; |
| |
| if (td->io_u_queued || td->cur_depth || td->io_u_in_flight) |
| return true; |
| |
| return false; |
| } |
| |
| static void io_workqueue_pre_sleep_fn(struct submit_worker *sw) |
| { |
| struct thread_data *td = sw->priv; |
| int ret; |
| |
| ret = io_u_quiesce(td); |
| if (ret > 0) |
| td->cur_depth -= ret; |
| } |
| |
| static int io_workqueue_alloc_fn(struct submit_worker *sw) |
| { |
| struct thread_data *td; |
| |
| td = calloc(1, sizeof(*td)); |
| sw->priv = td; |
| return 0; |
| } |
| |
| static void io_workqueue_free_fn(struct submit_worker *sw) |
| { |
| free(sw->priv); |
| sw->priv = NULL; |
| } |
| |
| static int io_workqueue_init_worker_fn(struct submit_worker *sw) |
| { |
| struct thread_data *parent = sw->wq->td; |
| struct thread_data *td = sw->priv; |
| |
| memcpy(&td->o, &parent->o, sizeof(td->o)); |
| memcpy(&td->ts, &parent->ts, sizeof(td->ts)); |
| td->o.uid = td->o.gid = -1U; |
| dup_files(td, parent); |
| td->eo = parent->eo; |
| fio_options_mem_dupe(td); |
| |
| if (ioengine_load(td)) |
| goto err; |
| |
| td->pid = gettid(); |
| |
| INIT_FLIST_HEAD(&td->io_log_list); |
| INIT_FLIST_HEAD(&td->io_hist_list); |
| INIT_FLIST_HEAD(&td->verify_list); |
| INIT_FLIST_HEAD(&td->trim_list); |
| INIT_FLIST_HEAD(&td->next_rand_list); |
| td->io_hist_tree = RB_ROOT; |
| |
| td->o.iodepth = 1; |
| if (td_io_init(td)) |
| goto err_io_init; |
| |
| set_epoch_time(td, td->o.log_unix_epoch); |
| fio_getrusage(&td->ru_start); |
| clear_io_state(td, 1); |
| |
| td_set_runstate(td, TD_RUNNING); |
| td->flags |= TD_F_CHILD; |
| td->parent = parent; |
| return 0; |
| |
| err_io_init: |
| close_ioengine(td); |
| err: |
| return 1; |
| |
| } |
| |
| static void io_workqueue_exit_worker_fn(struct submit_worker *sw, |
| unsigned int *sum_cnt) |
| { |
| struct thread_data *td = sw->priv; |
| |
| (*sum_cnt)++; |
| sum_thread_stats(&sw->wq->td->ts, &td->ts, *sum_cnt == 1); |
| |
| fio_options_free(td); |
| close_and_free_files(td); |
| if (td->io_ops) |
| close_ioengine(td); |
| td_set_runstate(td, TD_EXITED); |
| } |
| |
| #ifdef CONFIG_SFAA |
| static void sum_val(uint64_t *dst, uint64_t *src) |
| { |
| if (*src) { |
| __sync_fetch_and_add(dst, *src); |
| *src = 0; |
| } |
| } |
| #else |
| static void sum_val(uint64_t *dst, uint64_t *src) |
| { |
| if (*src) { |
| *dst += *src; |
| *src = 0; |
| } |
| } |
| #endif |
| |
| static void pthread_double_unlock(pthread_mutex_t *lock1, |
| pthread_mutex_t *lock2) |
| { |
| #ifndef CONFIG_SFAA |
| pthread_mutex_unlock(lock1); |
| pthread_mutex_unlock(lock2); |
| #endif |
| } |
| |
| static void pthread_double_lock(pthread_mutex_t *lock1, pthread_mutex_t *lock2) |
| { |
| #ifndef CONFIG_SFAA |
| if (lock1 < lock2) { |
| pthread_mutex_lock(lock1); |
| pthread_mutex_lock(lock2); |
| } else { |
| pthread_mutex_lock(lock2); |
| pthread_mutex_lock(lock1); |
| } |
| #endif |
| } |
| |
| static void sum_ddir(struct thread_data *dst, struct thread_data *src, |
| enum fio_ddir ddir) |
| { |
| pthread_double_lock(&dst->io_wq.stat_lock, &src->io_wq.stat_lock); |
| |
| sum_val(&dst->io_bytes[ddir], &src->io_bytes[ddir]); |
| sum_val(&dst->io_blocks[ddir], &src->io_blocks[ddir]); |
| sum_val(&dst->this_io_blocks[ddir], &src->this_io_blocks[ddir]); |
| sum_val(&dst->this_io_bytes[ddir], &src->this_io_bytes[ddir]); |
| sum_val(&dst->bytes_done[ddir], &src->bytes_done[ddir]); |
| |
| pthread_double_unlock(&dst->io_wq.stat_lock, &src->io_wq.stat_lock); |
| } |
| |
| static void io_workqueue_update_acct_fn(struct submit_worker *sw) |
| { |
| struct thread_data *src = sw->priv; |
| struct thread_data *dst = sw->wq->td; |
| |
| if (td_read(src)) |
| sum_ddir(dst, src, DDIR_READ); |
| if (td_write(src)) |
| sum_ddir(dst, src, DDIR_WRITE); |
| if (td_trim(src)) |
| sum_ddir(dst, src, DDIR_TRIM); |
| |
| } |
| |
| static struct workqueue_ops rated_wq_ops = { |
| .fn = io_workqueue_fn, |
| .pre_sleep_flush_fn = io_workqueue_pre_sleep_flush_fn, |
| .pre_sleep_fn = io_workqueue_pre_sleep_fn, |
| .update_acct_fn = io_workqueue_update_acct_fn, |
| .alloc_worker_fn = io_workqueue_alloc_fn, |
| .free_worker_fn = io_workqueue_free_fn, |
| .init_worker_fn = io_workqueue_init_worker_fn, |
| .exit_worker_fn = io_workqueue_exit_worker_fn, |
| }; |
| |
| int rate_submit_init(struct thread_data *td, struct sk_out *sk_out) |
| { |
| if (td->o.io_submit_mode != IO_MODE_OFFLOAD) |
| return 0; |
| |
| return workqueue_init(td, &td->io_wq, &rated_wq_ops, td->o.iodepth, sk_out); |
| } |
| |
| void rate_submit_exit(struct thread_data *td) |
| { |
| if (td->o.io_submit_mode != IO_MODE_OFFLOAD) |
| return; |
| |
| workqueue_exit(&td->io_wq); |
| } |