Commit | Line | Data |
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51575029 JA |
1 | /* |
2 | * Rated submission helpers | |
3 | * | |
4 | * Copyright (C) 2015 Jens Axboe <axboe@kernel.dk> | |
5 | * | |
6 | */ | |
40511301 JA |
7 | #include "fio.h" |
8 | #include "ioengine.h" | |
9 | #include "lib/getrusage.h" | |
24660963 | 10 | #include "rate-submit.h" |
40511301 | 11 | |
155f2f02 JA |
12 | static int io_workqueue_fn(struct submit_worker *sw, |
13 | struct workqueue_work *work) | |
40511301 JA |
14 | { |
15 | struct io_u *io_u = container_of(work, struct io_u, work); | |
16 | const enum fio_ddir ddir = io_u->ddir; | |
b86ad8f1 | 17 | struct thread_data *td = sw->priv; |
40511301 JA |
18 | int ret; |
19 | ||
20 | dprint(FD_RATE, "io_u %p queued by %u\n", io_u, gettid()); | |
21 | ||
1651e431 | 22 | io_u_set(td, io_u, IO_U_F_NO_FILE_PUT); |
40511301 JA |
23 | |
24 | td->cur_depth++; | |
25 | ||
26 | do { | |
27 | ret = td_io_queue(td, io_u); | |
28 | if (ret != FIO_Q_BUSY) | |
29 | break; | |
30 | ret = io_u_queued_complete(td, 1); | |
31 | if (ret > 0) | |
32 | td->cur_depth -= ret; | |
1651e431 | 33 | io_u_clear(td, io_u, IO_U_F_FLIGHT); |
40511301 JA |
34 | } while (1); |
35 | ||
36 | dprint(FD_RATE, "io_u %p ret %d by %u\n", io_u, ret, gettid()); | |
37 | ||
38 | io_queue_event(td, io_u, &ret, ddir, NULL, 0, NULL); | |
39 | ||
40 | if (ret == FIO_Q_COMPLETED) | |
41 | td->cur_depth--; | |
42 | else if (ret == FIO_Q_QUEUED) { | |
43 | unsigned int min_evts; | |
44 | ||
45 | if (td->o.iodepth == 1) | |
46 | min_evts = 1; | |
47 | else | |
48 | min_evts = 0; | |
49 | ||
50 | ret = io_u_queued_complete(td, min_evts); | |
51 | if (ret > 0) | |
52 | td->cur_depth -= ret; | |
53 | } else if (ret == FIO_Q_BUSY) { | |
54 | ret = io_u_queued_complete(td, td->cur_depth); | |
55 | if (ret > 0) | |
56 | td->cur_depth -= ret; | |
57 | } | |
155f2f02 JA |
58 | |
59 | return 0; | |
40511301 JA |
60 | } |
61 | ||
62 | static bool io_workqueue_pre_sleep_flush_fn(struct submit_worker *sw) | |
63 | { | |
b86ad8f1 | 64 | struct thread_data *td = sw->priv; |
40511301 JA |
65 | |
66 | if (td->io_u_queued || td->cur_depth || td->io_u_in_flight) | |
67 | return true; | |
68 | ||
69 | return false; | |
70 | } | |
71 | ||
72 | static void io_workqueue_pre_sleep_fn(struct submit_worker *sw) | |
73 | { | |
b86ad8f1 | 74 | struct thread_data *td = sw->priv; |
40511301 JA |
75 | int ret; |
76 | ||
77 | ret = io_u_quiesce(td); | |
78 | if (ret > 0) | |
79 | td->cur_depth -= ret; | |
80 | } | |
81 | ||
82 | static int io_workqueue_alloc_fn(struct submit_worker *sw) | |
83 | { | |
84 | struct thread_data *td; | |
85 | ||
86 | td = calloc(1, sizeof(*td)); | |
b86ad8f1 | 87 | sw->priv = td; |
40511301 JA |
88 | return 0; |
89 | } | |
90 | ||
91 | static void io_workqueue_free_fn(struct submit_worker *sw) | |
92 | { | |
b86ad8f1 CB |
93 | free(sw->priv); |
94 | sw->priv = NULL; | |
40511301 JA |
95 | } |
96 | ||
97 | static int io_workqueue_init_worker_fn(struct submit_worker *sw) | |
98 | { | |
99 | struct thread_data *parent = sw->wq->td; | |
b86ad8f1 | 100 | struct thread_data *td = sw->priv; |
40511301 JA |
101 | int fio_unused ret; |
102 | ||
103 | memcpy(&td->o, &parent->o, sizeof(td->o)); | |
104 | memcpy(&td->ts, &parent->ts, sizeof(td->ts)); | |
105 | td->o.uid = td->o.gid = -1U; | |
106 | dup_files(td, parent); | |
107 | td->eo = parent->eo; | |
108 | fio_options_mem_dupe(td); | |
109 | ||
110 | if (ioengine_load(td)) | |
111 | goto err; | |
112 | ||
40511301 JA |
113 | td->pid = gettid(); |
114 | ||
115 | INIT_FLIST_HEAD(&td->io_log_list); | |
116 | INIT_FLIST_HEAD(&td->io_hist_list); | |
117 | INIT_FLIST_HEAD(&td->verify_list); | |
118 | INIT_FLIST_HEAD(&td->trim_list); | |
119 | INIT_FLIST_HEAD(&td->next_rand_list); | |
120 | td->io_hist_tree = RB_ROOT; | |
121 | ||
122 | td->o.iodepth = 1; | |
123 | if (td_io_init(td)) | |
124 | goto err_io_init; | |
125 | ||
126 | fio_gettime(&td->epoch, NULL); | |
127 | fio_getrusage(&td->ru_start); | |
128 | clear_io_state(td, 1); | |
129 | ||
130 | td_set_runstate(td, TD_RUNNING); | |
131 | td->flags |= TD_F_CHILD; | |
132 | td->parent = parent; | |
133 | return 0; | |
134 | ||
135 | err_io_init: | |
136 | close_ioengine(td); | |
137 | err: | |
138 | return 1; | |
139 | ||
140 | } | |
141 | ||
142 | static void io_workqueue_exit_worker_fn(struct submit_worker *sw, | |
143 | unsigned int *sum_cnt) | |
144 | { | |
b86ad8f1 | 145 | struct thread_data *td = sw->priv; |
40511301 JA |
146 | |
147 | (*sum_cnt)++; | |
148 | sum_thread_stats(&sw->wq->td->ts, &td->ts, *sum_cnt == 1); | |
149 | ||
150 | fio_options_free(td); | |
151 | close_and_free_files(td); | |
152 | if (td->io_ops) | |
153 | close_ioengine(td); | |
154 | td_set_runstate(td, TD_EXITED); | |
155 | } | |
156 | ||
157 | #ifdef CONFIG_SFAA | |
158 | static void sum_val(uint64_t *dst, uint64_t *src) | |
159 | { | |
160 | if (*src) { | |
161 | __sync_fetch_and_add(dst, *src); | |
162 | *src = 0; | |
163 | } | |
164 | } | |
165 | #else | |
166 | static void sum_val(uint64_t *dst, uint64_t *src) | |
167 | { | |
168 | if (*src) { | |
169 | *dst += *src; | |
170 | *src = 0; | |
171 | } | |
172 | } | |
173 | #endif | |
174 | ||
175 | static void pthread_double_unlock(pthread_mutex_t *lock1, | |
176 | pthread_mutex_t *lock2) | |
177 | { | |
178 | #ifndef CONFIG_SFAA | |
179 | pthread_mutex_unlock(lock1); | |
180 | pthread_mutex_unlock(lock2); | |
181 | #endif | |
182 | } | |
183 | ||
184 | static void pthread_double_lock(pthread_mutex_t *lock1, pthread_mutex_t *lock2) | |
185 | { | |
186 | #ifndef CONFIG_SFAA | |
187 | if (lock1 < lock2) { | |
188 | pthread_mutex_lock(lock1); | |
189 | pthread_mutex_lock(lock2); | |
190 | } else { | |
191 | pthread_mutex_lock(lock2); | |
192 | pthread_mutex_lock(lock1); | |
193 | } | |
194 | #endif | |
195 | } | |
196 | ||
197 | static void sum_ddir(struct thread_data *dst, struct thread_data *src, | |
198 | enum fio_ddir ddir) | |
199 | { | |
200 | pthread_double_lock(&dst->io_wq.stat_lock, &src->io_wq.stat_lock); | |
201 | ||
202 | sum_val(&dst->io_bytes[ddir], &src->io_bytes[ddir]); | |
203 | sum_val(&dst->io_blocks[ddir], &src->io_blocks[ddir]); | |
204 | sum_val(&dst->this_io_blocks[ddir], &src->this_io_blocks[ddir]); | |
205 | sum_val(&dst->this_io_bytes[ddir], &src->this_io_bytes[ddir]); | |
206 | sum_val(&dst->bytes_done[ddir], &src->bytes_done[ddir]); | |
207 | ||
208 | pthread_double_unlock(&dst->io_wq.stat_lock, &src->io_wq.stat_lock); | |
209 | } | |
210 | ||
211 | static void io_workqueue_update_acct_fn(struct submit_worker *sw) | |
212 | { | |
b86ad8f1 | 213 | struct thread_data *src = sw->priv; |
40511301 JA |
214 | struct thread_data *dst = sw->wq->td; |
215 | ||
216 | if (td_read(src)) | |
217 | sum_ddir(dst, src, DDIR_READ); | |
218 | if (td_write(src)) | |
219 | sum_ddir(dst, src, DDIR_WRITE); | |
220 | if (td_trim(src)) | |
221 | sum_ddir(dst, src, DDIR_TRIM); | |
222 | ||
223 | } | |
224 | ||
103b174e | 225 | static struct workqueue_ops rated_wq_ops = { |
40511301 JA |
226 | .fn = io_workqueue_fn, |
227 | .pre_sleep_flush_fn = io_workqueue_pre_sleep_flush_fn, | |
228 | .pre_sleep_fn = io_workqueue_pre_sleep_fn, | |
229 | .update_acct_fn = io_workqueue_update_acct_fn, | |
230 | .alloc_worker_fn = io_workqueue_alloc_fn, | |
231 | .free_worker_fn = io_workqueue_free_fn, | |
232 | .init_worker_fn = io_workqueue_init_worker_fn, | |
233 | .exit_worker_fn = io_workqueue_exit_worker_fn, | |
234 | }; | |
103b174e | 235 | |
24660963 | 236 | int rate_submit_init(struct thread_data *td, struct sk_out *sk_out) |
103b174e JA |
237 | { |
238 | if (td->o.io_submit_mode != IO_MODE_OFFLOAD) | |
239 | return 0; | |
240 | ||
24660963 | 241 | return workqueue_init(td, &td->io_wq, &rated_wq_ops, td->o.iodepth, sk_out); |
103b174e JA |
242 | } |
243 | ||
244 | void rate_submit_exit(struct thread_data *td) | |
245 | { | |
246 | if (td->o.io_submit_mode != IO_MODE_OFFLOAD) | |
247 | return; | |
248 | ||
249 | workqueue_exit(&td->io_wq); | |
250 | } |