Line data Source code
1 : /*
2 : * Copyright (c) 2015 Cisco and/or its affiliates.
3 : * Licensed under the Apache License, Version 2.0 (the "License");
4 : * you may not use this file except in compliance with the License.
5 : * You may obtain a copy of the License at:
6 : *
7 : * http://www.apache.org/licenses/LICENSE-2.0
8 : *
9 : * Unless required by applicable law or agreed to in writing, software
10 : * distributed under the License is distributed on an "AS IS" BASIS,
11 : * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 : * See the License for the specific language governing permissions and
13 : * limitations under the License.
14 : */
15 : #define _GNU_SOURCE
16 :
17 : #include <signal.h>
18 : #include <math.h>
19 : #include <vppinfra/format.h>
20 : #include <vppinfra/time_range.h>
21 : #include <vppinfra/interrupt.h>
22 : #include <vppinfra/linux/sysfs.h>
23 : #include <vlib/vlib.h>
24 :
25 : #include <vlib/threads.h>
26 :
27 : #include <vlib/stats/stats.h>
28 :
29 : u32
30 0 : vl (void *p)
31 : {
32 0 : return vec_len (p);
33 : }
34 :
35 : vlib_worker_thread_t *vlib_worker_threads;
36 : vlib_thread_main_t vlib_thread_main;
37 :
38 : /*
39 : * Barrier tracing can be enabled on a normal build to collect information
40 : * on barrier use, including timings and call stacks. Deliberately not
41 : * keyed off CLIB_DEBUG, because that can add significant overhead which
42 : * imapacts observed timings.
43 : */
44 :
45 : static inline void
46 18780 : barrier_trace_sync (f64 t_entry, f64 t_open, f64 t_closed)
47 : {
48 18780 : if (!vlib_worker_threads->barrier_elog_enabled)
49 18777 : return;
50 :
51 : ELOG_TYPE_DECLARE (e) = {
52 : .format = "bar-trace-%s-#%d",
53 : .format_args = "T4i4",
54 : };
55 :
56 : struct
57 : {
58 : u32 caller, count, t_entry, t_open, t_closed;
59 3 : } *ed = 0;
60 :
61 3 : ed = ELOG_DATA (&vlib_global_main.elog_main, e);
62 3 : ed->count = (int) vlib_worker_threads[0].barrier_sync_count;
63 6 : ed->caller = elog_string (&vlib_global_main.elog_main,
64 3 : (char *) vlib_worker_threads[0].barrier_caller);
65 3 : ed->t_entry = (int) (1000000.0 * t_entry);
66 3 : ed->t_open = (int) (1000000.0 * t_open);
67 3 : ed->t_closed = (int) (1000000.0 * t_closed);
68 : }
69 :
70 : static inline void
71 19848 : barrier_trace_sync_rec (f64 t_entry)
72 : {
73 19848 : if (!vlib_worker_threads->barrier_elog_enabled)
74 19846 : return;
75 :
76 : ELOG_TYPE_DECLARE (e) = {
77 : .format = "bar-syncrec-%s-#%d",
78 : .format_args = "T4i4",
79 : };
80 :
81 : struct
82 : {
83 : u32 caller, depth;
84 2 : } *ed = 0;
85 :
86 2 : ed = ELOG_DATA (&vlib_global_main.elog_main, e);
87 2 : ed->depth = (int) vlib_worker_threads[0].recursion_level - 1;
88 2 : ed->caller = elog_string (&vlib_global_main.elog_main,
89 2 : (char *) vlib_worker_threads[0].barrier_caller);
90 : }
91 :
92 : static inline void
93 19848 : barrier_trace_release_rec (f64 t_entry)
94 : {
95 19848 : if (!vlib_worker_threads->barrier_elog_enabled)
96 19846 : return;
97 :
98 : ELOG_TYPE_DECLARE (e) = {
99 : .format = "bar-relrrec-#%d",
100 : .format_args = "i4",
101 : };
102 :
103 : struct
104 : {
105 : u32 depth;
106 2 : } *ed = 0;
107 :
108 2 : ed = ELOG_DATA (&vlib_global_main.elog_main, e);
109 2 : ed->depth = (int) vlib_worker_threads[0].recursion_level;
110 : }
111 :
112 : static inline void
113 18743 : barrier_trace_release (f64 t_entry, f64 t_closed_total, f64 t_update_main)
114 : {
115 18743 : if (!vlib_worker_threads->barrier_elog_enabled)
116 18740 : return;
117 :
118 : ELOG_TYPE_DECLARE (e) = {
119 : .format = "bar-rel-#%d-e%d-u%d-t%d",
120 : .format_args = "i4i4i4i4",
121 : };
122 :
123 : struct
124 : {
125 : u32 count, t_entry, t_update_main, t_closed_total;
126 3 : } *ed = 0;
127 :
128 3 : ed = ELOG_DATA (&vlib_global_main.elog_main, e);
129 3 : ed->t_entry = (int) (1000000.0 * t_entry);
130 3 : ed->t_update_main = (int) (1000000.0 * t_update_main);
131 3 : ed->t_closed_total = (int) (1000000.0 * t_closed_total);
132 3 : ed->count = (int) vlib_worker_threads[0].barrier_sync_count;
133 :
134 : /* Reset context for next trace */
135 3 : vlib_worker_threads[0].barrier_context = NULL;
136 : }
137 :
138 : uword
139 12584 : os_get_nthreads (void)
140 : {
141 12584 : return vec_len (vlib_thread_stacks);
142 : }
143 :
144 : void
145 630 : vlib_set_thread_name (char *name)
146 : {
147 : int pthread_setname_np (pthread_t __target_thread, const char *__name);
148 : int rv;
149 630 : pthread_t thread = pthread_self ();
150 :
151 630 : if (thread)
152 : {
153 630 : rv = pthread_setname_np (thread, name);
154 630 : if (rv)
155 0 : clib_warning ("pthread_setname_np returned %d", rv);
156 : }
157 630 : }
158 :
159 : static int
160 0 : sort_registrations_by_no_clone (void *a0, void *a1)
161 : {
162 0 : vlib_thread_registration_t **tr0 = a0;
163 0 : vlib_thread_registration_t **tr1 = a1;
164 :
165 0 : return ((i32) ((*tr0)->no_data_structure_clone)
166 0 : - ((i32) ((*tr1)->no_data_structure_clone)));
167 : }
168 :
169 :
170 : /* Called early in the init sequence */
171 :
172 : clib_error_t *
173 575 : vlib_thread_init (vlib_main_t * vm)
174 : {
175 575 : vlib_thread_main_t *tm = &vlib_thread_main;
176 : vlib_worker_thread_t *w;
177 : vlib_thread_registration_t *tr;
178 575 : u32 n_vlib_mains = 1;
179 575 : u32 first_index = 1;
180 : u32 i;
181 : uword *avail_cpu;
182 : u32 stats_num_worker_threads_dir_index;
183 :
184 : stats_num_worker_threads_dir_index =
185 575 : vlib_stats_add_gauge ("/sys/num_worker_threads");
186 575 : ASSERT (stats_num_worker_threads_dir_index != ~0);
187 :
188 : /* get bitmaps of active cpu cores and sockets */
189 575 : tm->cpu_core_bitmap =
190 575 : clib_sysfs_list_to_bitmap ("/sys/devices/system/cpu/online");
191 575 : tm->cpu_socket_bitmap =
192 575 : clib_sysfs_list_to_bitmap ("/sys/devices/system/node/online");
193 :
194 575 : avail_cpu = clib_bitmap_dup (tm->cpu_core_bitmap);
195 :
196 : /* skip cores */
197 575 : for (i = 0; i < tm->skip_cores; i++)
198 : {
199 0 : uword c = clib_bitmap_first_set (avail_cpu);
200 0 : if (c == ~0)
201 0 : return clib_error_return (0, "no available cpus to skip");
202 :
203 0 : avail_cpu = clib_bitmap_set (avail_cpu, c, 0);
204 : }
205 :
206 : /* grab cpu for main thread */
207 575 : if (tm->main_lcore != ~0)
208 : {
209 575 : if (clib_bitmap_get (avail_cpu, tm->main_lcore) == 0)
210 0 : return clib_error_return (0, "cpu %u is not available to be used"
211 : " for the main thread", tm->main_lcore);
212 575 : avail_cpu = clib_bitmap_set (avail_cpu, tm->main_lcore, 0);
213 : }
214 :
215 : /* assume that there is socket 0 only if there is no data from sysfs */
216 575 : if (!tm->cpu_socket_bitmap)
217 0 : tm->cpu_socket_bitmap = clib_bitmap_set (0, 0, 1);
218 :
219 : /* pin main thread to main_lcore */
220 575 : if (tm->main_lcore != ~0)
221 : {
222 : cpu_set_t cpuset;
223 575 : CPU_ZERO (&cpuset);
224 575 : CPU_SET (tm->main_lcore, &cpuset);
225 575 : pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
226 : }
227 :
228 : /* Set up thread 0 */
229 575 : vec_validate_aligned (vlib_worker_threads, 0, CLIB_CACHE_LINE_BYTES);
230 575 : vec_set_len (vlib_worker_threads, 1);
231 575 : w = vlib_worker_threads;
232 575 : w->thread_mheap = clib_mem_get_heap ();
233 575 : w->thread_stack = vlib_thread_stacks[0];
234 575 : w->cpu_id = tm->main_lcore;
235 575 : w->lwp = syscall (SYS_gettid);
236 575 : w->thread_id = pthread_self ();
237 575 : tm->n_vlib_mains = 1;
238 :
239 575 : vlib_get_thread_core_numa (w, w->cpu_id);
240 :
241 575 : if (tm->sched_policy != ~0)
242 : {
243 : struct sched_param sched_param;
244 0 : if (!sched_getparam (w->lwp, &sched_param))
245 : {
246 0 : if (tm->sched_priority != ~0)
247 0 : sched_param.sched_priority = tm->sched_priority;
248 0 : sched_setscheduler (w->lwp, tm->sched_policy, &sched_param);
249 : }
250 : }
251 :
252 : /* assign threads to cores and set n_vlib_mains */
253 575 : tr = tm->next;
254 :
255 1150 : while (tr)
256 : {
257 575 : vec_add1 (tm->registrations, tr);
258 575 : tr = tr->next;
259 : }
260 :
261 575 : vec_sort_with_function (tm->registrations, sort_registrations_by_no_clone);
262 :
263 1150 : for (i = 0; i < vec_len (tm->registrations); i++)
264 : {
265 : int j;
266 575 : tr = tm->registrations[i];
267 575 : tr->first_index = first_index;
268 575 : first_index += tr->count;
269 575 : n_vlib_mains += (tr->no_data_structure_clone == 0) ? tr->count : 0;
270 :
271 : /* construct coremask */
272 575 : if (tr->use_pthreads || !tr->count)
273 538 : continue;
274 :
275 37 : if (tr->coremask)
276 : {
277 : uword c;
278 : /* *INDENT-OFF* */
279 92 : clib_bitmap_foreach (c, tr->coremask) {
280 55 : if (clib_bitmap_get(avail_cpu, c) == 0)
281 0 : return clib_error_return (0, "cpu %u is not available to be used"
282 : " for the '%s' thread",c, tr->name);
283 :
284 55 : avail_cpu = clib_bitmap_set(avail_cpu, c, 0);
285 : }
286 : /* *INDENT-ON* */
287 : }
288 : else
289 : {
290 0 : for (j = 0; j < tr->count; j++)
291 : {
292 : /* Do not use CPU 0 by default - leave it to the host and IRQs */
293 0 : uword avail_c0 = clib_bitmap_get (avail_cpu, 0);
294 0 : avail_cpu = clib_bitmap_set (avail_cpu, 0, 0);
295 :
296 0 : uword c = clib_bitmap_first_set (avail_cpu);
297 : /* Use CPU 0 as a last resort */
298 0 : if (c == ~0 && avail_c0)
299 : {
300 0 : c = 0;
301 0 : avail_c0 = 0;
302 : }
303 :
304 0 : if (c == ~0)
305 0 : return clib_error_return (0,
306 : "no available cpus to be used for"
307 : " the '%s' thread", tr->name);
308 :
309 0 : avail_cpu = clib_bitmap_set (avail_cpu, 0, avail_c0);
310 0 : avail_cpu = clib_bitmap_set (avail_cpu, c, 0);
311 0 : tr->coremask = clib_bitmap_set (tr->coremask, c, 1);
312 : }
313 : }
314 : }
315 :
316 575 : clib_bitmap_free (avail_cpu);
317 :
318 575 : tm->n_vlib_mains = n_vlib_mains;
319 575 : vlib_stats_set_gauge (stats_num_worker_threads_dir_index, n_vlib_mains - 1);
320 :
321 : /*
322 : * Allocate the remaining worker threads, and thread stack vector slots
323 : * from now on, calls to os_get_nthreads() will return the correct
324 : * answer.
325 : */
326 575 : vec_validate_aligned (vlib_worker_threads, first_index - 1,
327 : CLIB_CACHE_LINE_BYTES);
328 575 : vec_validate (vlib_thread_stacks, vec_len (vlib_worker_threads) - 1);
329 575 : return 0;
330 : }
331 :
332 : vlib_frame_queue_t *
333 23964 : vlib_frame_queue_alloc (int nelts)
334 : {
335 : vlib_frame_queue_t *fq;
336 :
337 23964 : fq = clib_mem_alloc_aligned (sizeof (*fq), CLIB_CACHE_LINE_BYTES);
338 23964 : clib_memset (fq, 0, sizeof (*fq));
339 23964 : fq->nelts = nelts;
340 23964 : fq->vector_threshold = 2 * VLIB_FRAME_SIZE;
341 23964 : vec_validate_aligned (fq->elts, nelts - 1, CLIB_CACHE_LINE_BYTES);
342 :
343 23964 : if (nelts & (nelts - 1))
344 : {
345 0 : fformat (stderr, "FATAL: nelts MUST be a power of 2\n");
346 0 : abort ();
347 : }
348 :
349 23964 : return (fq);
350 : }
351 :
352 : void vl_msg_api_handler_no_free (void *) __attribute__ ((weak));
353 : void
354 0 : vl_msg_api_handler_no_free (void *v)
355 : {
356 0 : }
357 :
358 : /* To be called by vlib worker threads upon startup */
359 : void
360 55 : vlib_worker_thread_init (vlib_worker_thread_t * w)
361 : {
362 55 : vlib_thread_main_t *tm = vlib_get_thread_main ();
363 :
364 : /*
365 : * Note: disabling signals in worker threads as follows
366 : * prevents the api post-mortem dump scheme from working
367 : * {
368 : * sigset_t s;
369 : * sigfillset (&s);
370 : * pthread_sigmask (SIG_SETMASK, &s, 0);
371 : * }
372 : */
373 :
374 55 : clib_mem_set_heap (w->thread_mheap);
375 :
376 55 : if (vec_len (tm->thread_prefix) && w->registration->short_name)
377 : {
378 110 : w->name = format (0, "%v_%s_%d%c", tm->thread_prefix,
379 55 : w->registration->short_name, w->instance_id, '\0');
380 55 : vlib_set_thread_name ((char *) w->name);
381 : }
382 :
383 55 : if (!w->registration->use_pthreads)
384 : {
385 :
386 : /* Initial barrier sync, for both worker and i/o threads */
387 55 : clib_atomic_fetch_add (vlib_worker_threads->workers_at_barrier, 1);
388 :
389 1489160 : while (*vlib_worker_threads->wait_at_barrier)
390 : ;
391 :
392 55 : clib_atomic_fetch_add (vlib_worker_threads->workers_at_barrier, -1);
393 : }
394 55 : }
395 :
396 : void *
397 55 : vlib_worker_thread_bootstrap_fn (void *arg)
398 : {
399 55 : vlib_worker_thread_t *w = arg;
400 :
401 55 : w->lwp = syscall (SYS_gettid);
402 55 : w->thread_id = pthread_self ();
403 :
404 55 : __os_thread_index = w - vlib_worker_threads;
405 :
406 : if (CLIB_DEBUG > 0)
407 : {
408 55 : void *frame_addr = __builtin_frame_address (0);
409 55 : if (frame_addr < (void *) w->thread_stack ||
410 55 : frame_addr > (void *) w->thread_stack + VLIB_THREAD_STACK_SIZE)
411 : {
412 : /* heap is not set yet */
413 0 : fprintf (stderr, "thread stack is not set properly\n");
414 0 : exit (1);
415 : }
416 : }
417 :
418 55 : w->thread_function (arg);
419 :
420 0 : return 0;
421 : }
422 :
423 : void
424 630 : vlib_get_thread_core_numa (vlib_worker_thread_t * w, unsigned cpu_id)
425 : {
426 630 : const char *sys_cpu_path = "/sys/devices/system/cpu/cpu";
427 630 : const char *sys_node_path = "/sys/devices/system/node/node";
428 630 : clib_bitmap_t *nbmp = 0, *cbmp = 0;
429 : u32 node;
430 630 : u8 *p = 0;
431 630 : int core_id = -1, numa_id = -1;
432 :
433 630 : p = format (p, "%s%u/topology/core_id%c", sys_cpu_path, cpu_id, 0);
434 630 : clib_sysfs_read ((char *) p, "%d", &core_id);
435 630 : vec_reset_length (p);
436 :
437 : /* *INDENT-OFF* */
438 630 : clib_sysfs_read ("/sys/devices/system/node/online", "%U",
439 : unformat_bitmap_list, &nbmp);
440 1890 : clib_bitmap_foreach (node, nbmp) {
441 1260 : p = format (p, "%s%u/cpulist%c", sys_node_path, node, 0);
442 1260 : clib_sysfs_read ((char *) p, "%U", unformat_bitmap_list, &cbmp);
443 1260 : if (clib_bitmap_get (cbmp, cpu_id))
444 630 : numa_id = node;
445 1260 : vec_reset_length (cbmp);
446 1260 : vec_reset_length (p);
447 : }
448 : /* *INDENT-ON* */
449 630 : vec_free (nbmp);
450 630 : vec_free (cbmp);
451 630 : vec_free (p);
452 :
453 630 : w->core_id = core_id;
454 630 : w->numa_id = numa_id;
455 630 : }
456 :
457 : static clib_error_t *
458 55 : vlib_launch_thread_int (void *fp, vlib_worker_thread_t * w, unsigned cpu_id)
459 : {
460 55 : clib_mem_main_t *mm = &clib_mem_main;
461 55 : vlib_thread_main_t *tm = &vlib_thread_main;
462 : pthread_t worker;
463 : pthread_attr_t attr;
464 : cpu_set_t cpuset;
465 55 : void *(*fp_arg) (void *) = fp;
466 : void *numa_heap;
467 :
468 55 : w->cpu_id = cpu_id;
469 55 : vlib_get_thread_core_numa (w, cpu_id);
470 :
471 : /* Set up NUMA-bound heap if indicated */
472 55 : if (mm->per_numa_mheaps[w->numa_id] == 0)
473 : {
474 : /* If the user requested a NUMA heap, create it... */
475 8 : if (tm->numa_heap_size)
476 : {
477 0 : clib_mem_set_numa_affinity (w->numa_id, 1 /* force */ );
478 0 : numa_heap = clib_mem_create_heap (0 /* DIY */ , tm->numa_heap_size,
479 : 1 /* is_locked */ ,
480 : "numa %u heap", w->numa_id);
481 0 : clib_mem_set_default_numa_affinity ();
482 0 : mm->per_numa_mheaps[w->numa_id] = numa_heap;
483 : }
484 : else
485 : {
486 : /* Or, use the main heap */
487 8 : mm->per_numa_mheaps[w->numa_id] = w->thread_mheap;
488 : }
489 : }
490 :
491 55 : CPU_ZERO (&cpuset);
492 55 : CPU_SET (cpu_id, &cpuset);
493 :
494 55 : if (pthread_attr_init (&attr))
495 0 : return clib_error_return_unix (0, "pthread_attr_init");
496 :
497 55 : if (pthread_attr_setstack (&attr, w->thread_stack,
498 : VLIB_THREAD_STACK_SIZE))
499 0 : return clib_error_return_unix (0, "pthread_attr_setstack");
500 :
501 55 : if (pthread_create (&worker, &attr, fp_arg, (void *) w))
502 0 : return clib_error_return_unix (0, "pthread_create");
503 :
504 55 : if (pthread_setaffinity_np (worker, sizeof (cpu_set_t), &cpuset))
505 0 : return clib_error_return_unix (0, "pthread_setaffinity_np");
506 :
507 55 : if (pthread_attr_destroy (&attr))
508 0 : return clib_error_return_unix (0, "pthread_attr_destroy");
509 :
510 55 : return 0;
511 : }
512 :
513 : static clib_error_t *
514 575 : start_workers (vlib_main_t * vm)
515 : {
516 575 : vlib_global_main_t *vgm = vlib_get_global_main ();
517 575 : vlib_main_t *fvm = vlib_get_first_main ();
518 : int i, j;
519 : vlib_worker_thread_t *w;
520 : vlib_main_t *vm_clone;
521 : void *oldheap;
522 575 : vlib_thread_main_t *tm = &vlib_thread_main;
523 : vlib_thread_registration_t *tr;
524 : vlib_node_runtime_t *rt;
525 575 : u32 n_vlib_mains = tm->n_vlib_mains;
526 : u32 worker_thread_index;
527 575 : u32 stats_err_entry_index = fvm->error_main.stats_err_entry_index;
528 575 : clib_mem_heap_t *main_heap = clib_mem_get_per_cpu_heap ();
529 575 : vlib_stats_register_mem_heap (main_heap);
530 :
531 575 : vec_reset_length (vlib_worker_threads);
532 :
533 : /* Set up the main thread */
534 575 : vec_add2_aligned (vlib_worker_threads, w, 1, CLIB_CACHE_LINE_BYTES);
535 575 : w->elog_track.name = "main thread";
536 575 : elog_track_register (vlib_get_elog_main (), &w->elog_track);
537 :
538 575 : if (vec_len (tm->thread_prefix))
539 : {
540 575 : w->name = format (0, "%v_main%c", tm->thread_prefix, '\0');
541 575 : vlib_set_thread_name ((char *) w->name);
542 : }
543 :
544 575 : vgm->elog_main.lock =
545 575 : clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES);
546 575 : vgm->elog_main.lock[0] = 0;
547 :
548 575 : clib_callback_data_init (&vm->vlib_node_runtime_perf_callbacks,
549 : &vm->worker_thread_main_loop_callback_lock);
550 :
551 575 : vec_validate_aligned (vgm->vlib_mains, n_vlib_mains - 1,
552 : CLIB_CACHE_LINE_BYTES);
553 575 : vec_set_len (vgm->vlib_mains, 0);
554 575 : vec_add1_aligned (vgm->vlib_mains, vm, CLIB_CACHE_LINE_BYTES);
555 :
556 575 : if (n_vlib_mains > 1)
557 : {
558 74 : vlib_worker_threads->wait_at_barrier =
559 37 : clib_mem_alloc_aligned (sizeof (u32), CLIB_CACHE_LINE_BYTES);
560 74 : vlib_worker_threads->workers_at_barrier =
561 37 : clib_mem_alloc_aligned (sizeof (u32), CLIB_CACHE_LINE_BYTES);
562 :
563 74 : vlib_worker_threads->node_reforks_required =
564 37 : clib_mem_alloc_aligned (sizeof (u32), CLIB_CACHE_LINE_BYTES);
565 :
566 : /* We'll need the rpc vector lock... */
567 37 : clib_spinlock_init (&vm->pending_rpc_lock);
568 :
569 : /* Ask for an initial barrier sync */
570 37 : *vlib_worker_threads->workers_at_barrier = 0;
571 37 : *vlib_worker_threads->wait_at_barrier = 1;
572 :
573 : /* Without update or refork */
574 37 : *vlib_worker_threads->node_reforks_required = 0;
575 37 : vgm->need_vlib_worker_thread_node_runtime_update = 0;
576 :
577 : /* init timing */
578 37 : vm->barrier_epoch = 0;
579 37 : vm->barrier_no_close_before = 0;
580 :
581 37 : worker_thread_index = 1;
582 37 : clib_spinlock_init (&vm->worker_thread_main_loop_callback_lock);
583 :
584 74 : for (i = 0; i < vec_len (tm->registrations); i++)
585 : {
586 : vlib_node_main_t *nm, *nm_clone;
587 : int k;
588 :
589 37 : tr = tm->registrations[i];
590 :
591 37 : if (tr->count == 0)
592 0 : continue;
593 :
594 92 : for (k = 0; k < tr->count; k++)
595 : {
596 : vlib_node_t *n;
597 : u64 **c;
598 :
599 55 : vec_add2 (vlib_worker_threads, w, 1);
600 : /* Currently unused, may not really work */
601 55 : if (tr->mheap_size)
602 0 : w->thread_mheap = clib_mem_create_heap (0, tr->mheap_size,
603 : /* unlocked */ 0,
604 : "%s%d heap",
605 : tr->name, k);
606 : else
607 55 : w->thread_mheap = main_heap;
608 :
609 110 : w->thread_stack =
610 55 : vlib_thread_stack_init (w - vlib_worker_threads);
611 55 : w->thread_function = tr->function;
612 55 : w->thread_function_arg = w;
613 55 : w->instance_id = k;
614 55 : w->registration = tr;
615 :
616 110 : w->elog_track.name =
617 55 : (char *) format (0, "%s %d", tr->name, k + 1);
618 55 : vec_add1 (w->elog_track.name, 0);
619 55 : elog_track_register (vlib_get_elog_main (), &w->elog_track);
620 :
621 55 : if (tr->no_data_structure_clone)
622 0 : continue;
623 :
624 : /* Fork vlib_global_main et al. Look for bugs here */
625 55 : oldheap = clib_mem_set_heap (w->thread_mheap);
626 :
627 55 : vm_clone = clib_mem_alloc_aligned (sizeof (*vm_clone),
628 : CLIB_CACHE_LINE_BYTES);
629 55 : clib_memcpy (vm_clone, vlib_get_first_main (),
630 : sizeof (*vm_clone));
631 :
632 55 : vm_clone->thread_index = worker_thread_index;
633 55 : vm_clone->pending_rpc_requests = 0;
634 55 : vec_validate (vm_clone->pending_rpc_requests, 0);
635 55 : vec_set_len (vm_clone->pending_rpc_requests, 0);
636 55 : clib_memset (&vm_clone->random_buffer, 0,
637 : sizeof (vm_clone->random_buffer));
638 55 : clib_spinlock_init
639 : (&vm_clone->worker_thread_main_loop_callback_lock);
640 55 : clib_callback_data_init
641 : (&vm_clone->vlib_node_runtime_perf_callbacks,
642 : &vm_clone->worker_thread_main_loop_callback_lock);
643 :
644 55 : nm = &vlib_get_first_main ()->node_main;
645 55 : nm_clone = &vm_clone->node_main;
646 : /* fork next frames array, preserving node runtime indices */
647 55 : nm_clone->next_frames = vec_dup_aligned (nm->next_frames,
648 : CLIB_CACHE_LINE_BYTES);
649 123200 : for (j = 0; j < vec_len (nm_clone->next_frames); j++)
650 : {
651 123145 : vlib_next_frame_t *nf = &nm_clone->next_frames[j];
652 : u32 save_node_runtime_index;
653 : u32 save_flags;
654 :
655 123145 : save_node_runtime_index = nf->node_runtime_index;
656 123145 : save_flags = nf->flags & VLIB_FRAME_NO_FREE_AFTER_DISPATCH;
657 123145 : vlib_next_frame_init (nf);
658 123145 : nf->node_runtime_index = save_node_runtime_index;
659 123145 : nf->flags = save_flags;
660 : }
661 :
662 : /* fork the frame dispatch queue */
663 55 : nm_clone->pending_frames = 0;
664 55 : vec_validate (nm_clone->pending_frames, 10);
665 55 : vec_set_len (nm_clone->pending_frames, 0);
666 :
667 : /* fork nodes */
668 55 : nm_clone->nodes = 0;
669 :
670 : /* Allocate all nodes in single block for speed */
671 55 : n = clib_mem_alloc_no_fail (vec_len (nm->nodes) * sizeof (*n));
672 :
673 39401 : for (j = 0; j < vec_len (nm->nodes); j++)
674 : {
675 39346 : clib_memcpy (n, nm->nodes[j], sizeof (*n));
676 : /* none of the copied nodes have enqueue rights given out */
677 39346 : n->owner_node_index = VLIB_INVALID_NODE_INDEX;
678 39346 : clib_memset (&n->stats_total, 0, sizeof (n->stats_total));
679 39346 : clib_memset (&n->stats_last_clear, 0,
680 : sizeof (n->stats_last_clear));
681 39346 : vec_add1 (nm_clone->nodes, n);
682 39346 : n++;
683 : }
684 55 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_INTERNAL] =
685 55 : vec_dup_aligned (nm->nodes_by_type[VLIB_NODE_TYPE_INTERNAL],
686 : CLIB_CACHE_LINE_BYTES);
687 35056 : vec_foreach (rt,
688 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_INTERNAL])
689 : {
690 35001 : vlib_node_t *n = vlib_get_node (vm, rt->node_index);
691 : /* copy initial runtime_data from node */
692 35001 : if (n->runtime_data && n->runtime_data_bytes > 0)
693 0 : clib_memcpy (rt->runtime_data, n->runtime_data,
694 : clib_min (VLIB_NODE_RUNTIME_DATA_SIZE,
695 : n->runtime_data_bytes));
696 : }
697 :
698 55 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT] =
699 55 : vec_dup_aligned (nm->nodes_by_type[VLIB_NODE_TYPE_INPUT],
700 : CLIB_CACHE_LINE_BYTES);
701 55 : clib_interrupt_init (
702 : &nm_clone->input_node_interrupts,
703 55 : vec_len (nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT]));
704 55 : clib_interrupt_init (
705 : &nm_clone->pre_input_node_interrupts,
706 55 : vec_len (nm_clone->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT]));
707 1595 : vec_foreach (rt, nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT])
708 : {
709 1540 : vlib_node_t *n = vlib_get_node (vm, rt->node_index);
710 : /* copy initial runtime_data from node */
711 1540 : if (n->runtime_data && n->runtime_data_bytes > 0)
712 0 : clib_memcpy (rt->runtime_data, n->runtime_data,
713 : clib_min (VLIB_NODE_RUNTIME_DATA_SIZE,
714 : n->runtime_data_bytes));
715 : }
716 :
717 55 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT] =
718 55 : vec_dup_aligned (nm->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT],
719 : CLIB_CACHE_LINE_BYTES);
720 220 : vec_foreach (rt,
721 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT])
722 : {
723 165 : vlib_node_t *n = vlib_get_node (vm, rt->node_index);
724 : /* copy initial runtime_data from node */
725 165 : if (n->runtime_data && n->runtime_data_bytes > 0)
726 0 : clib_memcpy (rt->runtime_data, n->runtime_data,
727 : clib_min (VLIB_NODE_RUNTIME_DATA_SIZE,
728 : n->runtime_data_bytes));
729 : }
730 :
731 55 : nm_clone->processes = vec_dup_aligned (nm->processes,
732 : CLIB_CACHE_LINE_BYTES);
733 :
734 : /* Create per-thread frame freelist */
735 55 : nm_clone->frame_sizes = 0;
736 55 : nm_clone->node_by_error = nm->node_by_error;
737 :
738 : /* Packet trace buffers are guaranteed to be empty, nothing to do here */
739 :
740 55 : clib_mem_set_heap (oldheap);
741 55 : vec_add1_aligned (vgm->vlib_mains, vm_clone,
742 : CLIB_CACHE_LINE_BYTES);
743 :
744 : /* Switch to the stats segment ... */
745 55 : vlib_stats_validate (stats_err_entry_index, worker_thread_index,
746 55 : vec_len (fvm->error_main.counters) - 1);
747 55 : c = vlib_stats_get_entry_data_pointer (stats_err_entry_index);
748 55 : vm_clone->error_main.counters = c[worker_thread_index];
749 :
750 55 : vm_clone->error_main.counters_last_clear = vec_dup_aligned (
751 : vlib_get_first_main ()->error_main.counters_last_clear,
752 : CLIB_CACHE_LINE_BYTES);
753 :
754 55 : worker_thread_index++;
755 : }
756 : }
757 : }
758 : else
759 : {
760 : /* only have non-data-structure copy threads to create... */
761 1076 : for (i = 0; i < vec_len (tm->registrations); i++)
762 : {
763 538 : tr = tm->registrations[i];
764 :
765 538 : for (j = 0; j < tr->count; j++)
766 : {
767 0 : vec_add2 (vlib_worker_threads, w, 1);
768 0 : if (tr->mheap_size)
769 : {
770 0 : w->thread_mheap = clib_mem_create_heap (0, tr->mheap_size,
771 : /* locked */ 0,
772 : "%s%d heap",
773 : tr->name, j);
774 : }
775 : else
776 0 : w->thread_mheap = main_heap;
777 0 : w->thread_stack =
778 0 : vlib_thread_stack_init (w - vlib_worker_threads);
779 0 : w->thread_function = tr->function;
780 0 : w->thread_function_arg = w;
781 0 : w->instance_id = j;
782 0 : w->elog_track.name =
783 0 : (char *) format (0, "%s %d", tr->name, j + 1);
784 0 : w->registration = tr;
785 0 : vec_add1 (w->elog_track.name, 0);
786 0 : elog_track_register (vlib_get_elog_main (), &w->elog_track);
787 : }
788 : }
789 : }
790 :
791 575 : worker_thread_index = 1;
792 :
793 1150 : for (i = 0; i < vec_len (tm->registrations); i++)
794 : {
795 : clib_error_t *err;
796 : int j;
797 :
798 575 : tr = tm->registrations[i];
799 :
800 575 : if (tr->use_pthreads || tm->use_pthreads)
801 : {
802 0 : for (j = 0; j < tr->count; j++)
803 : {
804 0 : w = vlib_worker_threads + worker_thread_index++;
805 0 : err = vlib_launch_thread_int (vlib_worker_thread_bootstrap_fn,
806 : w, 0);
807 0 : if (err)
808 0 : clib_error_report (err);
809 : }
810 : }
811 : else
812 : {
813 : uword c;
814 : /* *INDENT-OFF* */
815 630 : clib_bitmap_foreach (c, tr->coremask) {
816 55 : w = vlib_worker_threads + worker_thread_index++;
817 55 : err = vlib_launch_thread_int (vlib_worker_thread_bootstrap_fn,
818 : w, c);
819 55 : if (err)
820 0 : clib_error_report (err);
821 : }
822 : /* *INDENT-ON* */
823 : }
824 : }
825 575 : vlib_worker_thread_barrier_sync (vm);
826 : {
827 : clib_error_t *err;
828 575 : err = vlib_call_init_exit_functions (
829 : vm, &vgm->num_workers_change_function_registrations, 1 /* call_once */,
830 : 1 /* is_global */);
831 575 : if (err)
832 0 : clib_error_report (err);
833 : }
834 575 : vlib_worker_thread_barrier_release (vm);
835 575 : return 0;
836 : }
837 :
838 1151 : VLIB_MAIN_LOOP_ENTER_FUNCTION (start_workers);
839 :
840 :
841 : static inline void
842 524 : worker_thread_node_runtime_update_internal (void)
843 : {
844 : int i, j;
845 : vlib_main_t *vm;
846 : vlib_node_main_t *nm, *nm_clone;
847 : vlib_main_t *vm_clone;
848 : vlib_node_runtime_t *rt;
849 :
850 524 : ASSERT (vlib_get_thread_index () == 0);
851 :
852 524 : vm = vlib_get_first_main ();
853 524 : nm = &vm->node_main;
854 :
855 524 : ASSERT (*vlib_worker_threads->wait_at_barrier == 1);
856 :
857 : /*
858 : * Scrape all runtime stats, so we don't lose node runtime(s) with
859 : * pending counts, or throw away worker / io thread counts.
860 : */
861 378612 : for (j = 0; j < vec_len (nm->nodes); j++)
862 : {
863 : vlib_node_t *n;
864 378088 : n = nm->nodes[j];
865 378088 : vlib_node_sync_stats (vm, n);
866 : }
867 :
868 1575 : for (i = 1; i < vlib_get_n_threads (); i++)
869 : {
870 : vlib_node_t *n;
871 :
872 1051 : vm_clone = vlib_get_main_by_index (i);
873 1051 : nm_clone = &vm_clone->node_main;
874 :
875 761916 : for (j = 0; j < vec_len (nm_clone->nodes); j++)
876 : {
877 760865 : n = nm_clone->nodes[j];
878 :
879 760865 : rt = vlib_node_get_runtime (vm_clone, n->index);
880 760865 : vlib_node_runtime_sync_stats (vm_clone, rt, 0, 0, 0);
881 : }
882 : }
883 :
884 : /* Per-worker clone rebuilds are now done on each thread */
885 524 : }
886 :
887 :
888 : void
889 923 : vlib_worker_thread_node_refork (void)
890 : {
891 : vlib_main_t *vm, *vm_clone;
892 : vlib_node_main_t *nm, *nm_clone;
893 : vlib_node_t **old_nodes_clone;
894 : vlib_node_runtime_t *rt, *old_rt;
895 : u64 **c;
896 :
897 : vlib_node_t *new_n_clone;
898 :
899 : int j;
900 :
901 923 : vm = vlib_get_first_main ();
902 836 : nm = &vm->node_main;
903 836 : vm_clone = vlib_get_main ();
904 758 : nm_clone = &vm_clone->node_main;
905 :
906 : /* Re-clone error heap */
907 758 : u64 *old_counters_all_clear = vm_clone->error_main.counters_last_clear;
908 :
909 758 : clib_memcpy_fast (&vm_clone->error_main, &vm->error_main,
910 : sizeof (vm->error_main));
911 667 : j = vec_len (vm->error_main.counters) - 1;
912 :
913 680 : c = vlib_stats_get_entry_data_pointer (vm->error_main.stats_err_entry_index);
914 649 : vm_clone->error_main.counters = c[vm_clone->thread_index];
915 :
916 649 : vec_validate_aligned (old_counters_all_clear, j, CLIB_CACHE_LINE_BYTES);
917 743 : vm_clone->error_main.counters_last_clear = old_counters_all_clear;
918 :
919 1423700 : for (j = 0; j < vec_len (nm_clone->next_frames); j++)
920 : {
921 1422690 : vlib_next_frame_t *nf = &nm_clone->next_frames[j];
922 1422690 : if ((nf->flags & VLIB_FRAME_IS_ALLOCATED) && nf->frame != NULL)
923 : {
924 1361 : vlib_frame_t *f = nf->frame;
925 1361 : nf->frame = NULL;
926 1361 : vlib_frame_free (vm_clone, f);
927 : }
928 : }
929 :
930 972 : vec_free (nm_clone->next_frames);
931 1051 : nm_clone->next_frames = vec_dup_aligned (nm->next_frames,
932 : CLIB_CACHE_LINE_BYTES);
933 :
934 1735290 : for (j = 0; j < vec_len (nm_clone->next_frames); j++)
935 : {
936 1734480 : vlib_next_frame_t *nf = &nm_clone->next_frames[j];
937 : u32 save_node_runtime_index;
938 : u32 save_flags;
939 :
940 1734480 : save_node_runtime_index = nf->node_runtime_index;
941 1734480 : save_flags = nf->flags & VLIB_FRAME_NO_FREE_AFTER_DISPATCH;
942 1734480 : vlib_next_frame_init (nf);
943 1734600 : nf->node_runtime_index = save_node_runtime_index;
944 1734600 : nf->flags = save_flags;
945 : }
946 :
947 1047 : old_nodes_clone = nm_clone->nodes;
948 1047 : nm_clone->nodes = 0;
949 :
950 : /* re-fork nodes */
951 :
952 : /* Allocate all nodes in single block for speed */
953 1051 : new_n_clone =
954 1047 : clib_mem_alloc_no_fail (vec_len (nm->nodes) * sizeof (*new_n_clone));
955 582513 : for (j = 0; j < vec_len (nm->nodes); j++)
956 : {
957 578831 : vlib_node_t *new_n = nm->nodes[j];
958 :
959 578831 : clib_memcpy_fast (new_n_clone, new_n, sizeof (*new_n));
960 : /* none of the copied nodes have enqueue rights given out */
961 592355 : new_n_clone->owner_node_index = VLIB_INVALID_NODE_INDEX;
962 :
963 592355 : if (j >= vec_len (old_nodes_clone))
964 : {
965 : /* new node, set to zero */
966 350 : clib_memset (&new_n_clone->stats_total, 0,
967 : sizeof (new_n_clone->stats_total));
968 350 : clib_memset (&new_n_clone->stats_last_clear, 0,
969 : sizeof (new_n_clone->stats_last_clear));
970 : }
971 : else
972 : {
973 592709 : vlib_node_t *old_n_clone = old_nodes_clone[j];
974 : /* Copy stats if the old data is valid */
975 592709 : clib_memcpy_fast (&new_n_clone->stats_total,
976 592709 : &old_n_clone->stats_total,
977 : sizeof (new_n_clone->stats_total));
978 586389 : clib_memcpy_fast (&new_n_clone->stats_last_clear,
979 586389 : &old_n_clone->stats_last_clear,
980 : sizeof (new_n_clone->stats_last_clear));
981 :
982 : /* keep previous node state */
983 595732 : new_n_clone->state = old_n_clone->state;
984 595732 : new_n_clone->flags = old_n_clone->flags;
985 : }
986 596082 : vec_add1 (nm_clone->nodes, new_n_clone);
987 581462 : new_n_clone++;
988 : }
989 : /* Free the old node clones */
990 1049 : clib_mem_free (old_nodes_clone[0]);
991 :
992 1051 : vec_free (old_nodes_clone);
993 :
994 :
995 : /* re-clone internal nodes */
996 1051 : old_rt = nm_clone->nodes_by_type[VLIB_NODE_TYPE_INTERNAL];
997 983 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_INTERNAL] =
998 1051 : vec_dup_aligned (nm->nodes_by_type[VLIB_NODE_TYPE_INTERNAL],
999 : CLIB_CACHE_LINE_BYTES);
1000 :
1001 635604 : vec_foreach (rt, nm_clone->nodes_by_type[VLIB_NODE_TYPE_INTERNAL])
1002 : {
1003 634697 : vlib_node_t *n = vlib_get_node (vm, rt->node_index);
1004 : /* copy runtime_data, will be overwritten later for existing rt */
1005 634687 : if (n->runtime_data && n->runtime_data_bytes > 0)
1006 0 : clib_memcpy_fast (rt->runtime_data, n->runtime_data,
1007 0 : clib_min (VLIB_NODE_RUNTIME_DATA_SIZE,
1008 : n->runtime_data_bytes));
1009 : }
1010 :
1011 628896 : for (j = 0; j < vec_len (old_rt); j++)
1012 : {
1013 628004 : rt = vlib_node_get_runtime (vm_clone, old_rt[j].node_index);
1014 628080 : rt->state = old_rt[j].state;
1015 628080 : rt->flags = old_rt[j].flags;
1016 628080 : clib_memcpy_fast (rt->runtime_data, old_rt[j].runtime_data,
1017 : VLIB_NODE_RUNTIME_DATA_SIZE);
1018 : }
1019 :
1020 1051 : vec_free (old_rt);
1021 :
1022 : /* re-clone input nodes */
1023 1051 : old_rt = nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT];
1024 1051 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT] =
1025 1051 : vec_dup_aligned (nm->nodes_by_type[VLIB_NODE_TYPE_INPUT],
1026 : CLIB_CACHE_LINE_BYTES);
1027 1051 : clib_interrupt_resize (
1028 : &nm_clone->input_node_interrupts,
1029 1051 : vec_len (nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT]));
1030 1051 : clib_interrupt_resize (
1031 : &nm_clone->pre_input_node_interrupts,
1032 1051 : vec_len (nm_clone->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT]));
1033 :
1034 30466 : vec_foreach (rt, nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT])
1035 : {
1036 29416 : vlib_node_t *n = vlib_get_node (vm, rt->node_index);
1037 : /* copy runtime_data, will be overwritten later for existing rt */
1038 29415 : if (n->runtime_data && n->runtime_data_bytes > 0)
1039 0 : clib_memcpy_fast (rt->runtime_data, n->runtime_data,
1040 0 : clib_min (VLIB_NODE_RUNTIME_DATA_SIZE,
1041 : n->runtime_data_bytes));
1042 : }
1043 :
1044 30434 : for (j = 0; j < vec_len (old_rt); j++)
1045 : {
1046 29386 : rt = vlib_node_get_runtime (vm_clone, old_rt[j].node_index);
1047 29386 : rt->state = old_rt[j].state;
1048 29386 : rt->flags = old_rt[j].flags;
1049 29386 : clib_memcpy_fast (rt->runtime_data, old_rt[j].runtime_data,
1050 : VLIB_NODE_RUNTIME_DATA_SIZE);
1051 : }
1052 :
1053 1051 : vec_free (old_rt);
1054 :
1055 : /* re-clone pre-input nodes */
1056 1051 : old_rt = nm_clone->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT];
1057 1051 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT] =
1058 1051 : vec_dup_aligned (nm->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT],
1059 : CLIB_CACHE_LINE_BYTES);
1060 :
1061 4204 : vec_foreach (rt, nm_clone->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT])
1062 : {
1063 3153 : vlib_node_t *n = vlib_get_node (vm, rt->node_index);
1064 : /* copy runtime_data, will be overwritten later for existing rt */
1065 3153 : if (n->runtime_data && n->runtime_data_bytes > 0)
1066 0 : clib_memcpy_fast (rt->runtime_data, n->runtime_data,
1067 0 : clib_min (VLIB_NODE_RUNTIME_DATA_SIZE,
1068 : n->runtime_data_bytes));
1069 : }
1070 :
1071 4203 : for (j = 0; j < vec_len (old_rt); j++)
1072 : {
1073 3152 : rt = vlib_node_get_runtime (vm_clone, old_rt[j].node_index);
1074 3152 : rt->state = old_rt[j].state;
1075 3152 : rt->flags = old_rt[j].flags;
1076 3152 : clib_memcpy_fast (rt->runtime_data, old_rt[j].runtime_data,
1077 : VLIB_NODE_RUNTIME_DATA_SIZE);
1078 : }
1079 :
1080 1051 : vec_free (old_rt);
1081 :
1082 1051 : vec_free (nm_clone->processes);
1083 1051 : nm_clone->processes = vec_dup_aligned (nm->processes,
1084 : CLIB_CACHE_LINE_BYTES);
1085 1051 : nm_clone->node_by_error = nm->node_by_error;
1086 1051 : }
1087 :
1088 : void
1089 1349270 : vlib_worker_thread_node_runtime_update (void)
1090 : {
1091 : /*
1092 : * Make a note that we need to do a node runtime update
1093 : * prior to releasing the barrier.
1094 : */
1095 1349270 : vlib_global_main.need_vlib_worker_thread_node_runtime_update = 1;
1096 1349270 : }
1097 :
1098 : u32
1099 0 : unformat_sched_policy (unformat_input_t * input, va_list * args)
1100 : {
1101 0 : u32 *r = va_arg (*args, u32 *);
1102 :
1103 : if (0);
1104 : #define _(v,f,s) else if (unformat (input, s)) *r = SCHED_POLICY_##f;
1105 0 : foreach_sched_policy
1106 : #undef _
1107 : else
1108 0 : return 0;
1109 0 : return 1;
1110 : }
1111 :
1112 : static clib_error_t *
1113 575 : cpu_config (vlib_main_t * vm, unformat_input_t * input)
1114 : {
1115 : vlib_thread_registration_t *tr;
1116 : uword *p;
1117 575 : vlib_thread_main_t *tm = &vlib_thread_main;
1118 : u8 *name;
1119 : uword *bitmap;
1120 : u32 count;
1121 :
1122 575 : tm->thread_registrations_by_name = hash_create_string (0, sizeof (uword));
1123 :
1124 575 : tm->n_thread_stacks = 1; /* account for main thread */
1125 575 : tm->sched_policy = ~0;
1126 575 : tm->sched_priority = ~0;
1127 575 : tm->main_lcore = ~0;
1128 :
1129 575 : tr = tm->next;
1130 :
1131 1150 : while (tr)
1132 : {
1133 1150 : hash_set_mem (tm->thread_registrations_by_name, tr->name, (uword) tr);
1134 575 : tr = tr->next;
1135 : }
1136 :
1137 1207 : while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1138 : {
1139 632 : if (unformat (input, "use-pthreads"))
1140 0 : tm->use_pthreads = 1;
1141 632 : else if (unformat (input, "thread-prefix %v", &tm->thread_prefix))
1142 : ;
1143 632 : else if (unformat (input, "main-core %u", &tm->main_lcore))
1144 : ;
1145 57 : else if (unformat (input, "skip-cores %u", &tm->skip_cores))
1146 : ;
1147 57 : else if (unformat (input, "numa-heap-size %U",
1148 : unformat_memory_size, &tm->numa_heap_size))
1149 : ;
1150 57 : else if (unformat (input, "coremask-%s %U", &name,
1151 57 : unformat_bitmap_mask, &bitmap) ||
1152 57 : unformat (input, "corelist-%s %U", &name,
1153 : unformat_bitmap_list, &bitmap))
1154 : {
1155 114 : p = hash_get_mem (tm->thread_registrations_by_name, name);
1156 57 : if (p == 0)
1157 0 : return clib_error_return (0, "no such thread type '%s'", name);
1158 :
1159 57 : tr = (vlib_thread_registration_t *) p[0];
1160 :
1161 57 : if (tr->use_pthreads)
1162 0 : return clib_error_return (0,
1163 : "corelist cannot be set for '%s' threads",
1164 : name);
1165 57 : if (tr->count)
1166 0 : return clib_error_return
1167 : (0, "core placement of '%s' threads is already configured",
1168 : name);
1169 :
1170 57 : tr->coremask = bitmap;
1171 57 : tr->count = clib_bitmap_count_set_bits (tr->coremask);
1172 : }
1173 : else
1174 0 : if (unformat
1175 : (input, "scheduler-policy %U", unformat_sched_policy,
1176 : &tm->sched_policy))
1177 : ;
1178 0 : else if (unformat (input, "scheduler-priority %u", &tm->sched_priority))
1179 : ;
1180 0 : else if (unformat (input, "%s %u", &name, &count))
1181 : {
1182 0 : p = hash_get_mem (tm->thread_registrations_by_name, name);
1183 0 : if (p == 0)
1184 0 : return clib_error_return (0, "no such thread type 3 '%s'", name);
1185 :
1186 0 : tr = (vlib_thread_registration_t *) p[0];
1187 :
1188 0 : if (tr->fixed_count)
1189 0 : return clib_error_return
1190 : (0, "number of '%s' threads not configurable", name);
1191 0 : if (tr->count)
1192 0 : return clib_error_return
1193 : (0, "number of '%s' threads is already configured", name);
1194 :
1195 0 : tr->count = count;
1196 : }
1197 : else
1198 0 : break;
1199 : }
1200 :
1201 575 : if (tm->sched_priority != ~0)
1202 : {
1203 0 : if (tm->sched_policy == SCHED_FIFO || tm->sched_policy == SCHED_RR)
1204 0 : {
1205 0 : u32 prio_max = sched_get_priority_max (tm->sched_policy);
1206 0 : u32 prio_min = sched_get_priority_min (tm->sched_policy);
1207 0 : if (tm->sched_priority > prio_max)
1208 0 : tm->sched_priority = prio_max;
1209 0 : if (tm->sched_priority < prio_min)
1210 0 : tm->sched_priority = prio_min;
1211 : }
1212 : else
1213 : {
1214 0 : return clib_error_return
1215 : (0,
1216 : "scheduling priority (%d) is not allowed for `normal` scheduling policy",
1217 : tm->sched_priority);
1218 : }
1219 : }
1220 575 : tr = tm->next;
1221 :
1222 575 : if (!tm->thread_prefix)
1223 575 : tm->thread_prefix = format (0, "vpp");
1224 :
1225 1150 : while (tr)
1226 : {
1227 575 : tm->n_thread_stacks += tr->count;
1228 575 : tm->n_pthreads += tr->count * tr->use_pthreads;
1229 575 : tm->n_threads += tr->count * (tr->use_pthreads == 0);
1230 575 : tr = tr->next;
1231 : }
1232 :
1233 575 : return 0;
1234 : }
1235 :
1236 7514 : VLIB_EARLY_CONFIG_FUNCTION (cpu_config, "cpu");
1237 :
1238 : /*
1239 : * Enforce minimum open time to minimize packet loss due to Rx overflow,
1240 : * based on a test based heuristic that barrier should be open for at least
1241 : * 3 time as long as it is closed (with an upper bound of 1ms because by that
1242 : * point it is probably too late to make a difference)
1243 : */
1244 :
1245 : #ifndef BARRIER_MINIMUM_OPEN_LIMIT
1246 : #define BARRIER_MINIMUM_OPEN_LIMIT 0.001
1247 : #endif
1248 :
1249 : #ifndef BARRIER_MINIMUM_OPEN_FACTOR
1250 : #define BARRIER_MINIMUM_OPEN_FACTOR 3
1251 : #endif
1252 :
1253 : void
1254 575 : vlib_worker_thread_initial_barrier_sync_and_release (vlib_main_t * vm)
1255 : {
1256 : f64 deadline;
1257 575 : f64 now = vlib_time_now (vm);
1258 575 : u32 count = vlib_get_n_threads () - 1;
1259 :
1260 : /* No worker threads? */
1261 575 : if (count == 0)
1262 538 : return;
1263 :
1264 37 : deadline = now + BARRIER_SYNC_TIMEOUT;
1265 37 : *vlib_worker_threads->wait_at_barrier = 1;
1266 87334 : while (*vlib_worker_threads->workers_at_barrier != count)
1267 : {
1268 87297 : if ((now = vlib_time_now (vm)) > deadline)
1269 : {
1270 0 : fformat (stderr, "%s: worker thread deadlock\n", __FUNCTION__);
1271 0 : os_panic ();
1272 : }
1273 87297 : CLIB_PAUSE ();
1274 : }
1275 37 : *vlib_worker_threads->wait_at_barrier = 0;
1276 : }
1277 :
1278 : /**
1279 : * Return true if the wroker thread barrier is held
1280 : */
1281 : u8
1282 18960 : vlib_worker_thread_barrier_held (void)
1283 : {
1284 18960 : if (vlib_get_n_threads () < 2)
1285 18549 : return (1);
1286 :
1287 411 : return (*vlib_worker_threads->wait_at_barrier == 1);
1288 : }
1289 :
1290 : void
1291 2112280 : vlib_worker_thread_barrier_sync_int (vlib_main_t * vm, const char *func_name)
1292 : {
1293 : f64 deadline;
1294 : f64 now;
1295 : f64 t_entry;
1296 : f64 t_open;
1297 : f64 t_closed;
1298 : f64 max_vector_rate;
1299 : u32 count;
1300 : int i;
1301 :
1302 2112280 : if (vlib_get_n_threads () < 2)
1303 2073660 : return;
1304 :
1305 38628 : ASSERT (vlib_get_thread_index () == 0);
1306 :
1307 38628 : vlib_worker_threads[0].barrier_caller = func_name;
1308 38628 : count = vlib_get_n_threads () - 1;
1309 :
1310 : /* Record entry relative to last close */
1311 38628 : now = vlib_time_now (vm);
1312 38628 : t_entry = now - vm->barrier_epoch;
1313 :
1314 : /* Tolerate recursive calls */
1315 38628 : if (++vlib_worker_threads[0].recursion_level > 1)
1316 : {
1317 19848 : barrier_trace_sync_rec (t_entry);
1318 19848 : return;
1319 : }
1320 :
1321 18780 : if (PREDICT_FALSE (vec_len (vm->barrier_perf_callbacks) != 0))
1322 0 : clib_call_callbacks (vm->barrier_perf_callbacks, vm,
1323 : vm->clib_time.last_cpu_time, 0 /* enter */ );
1324 :
1325 : /*
1326 : * Need data to decide if we're working hard enough to honor
1327 : * the barrier hold-down timer.
1328 : */
1329 18780 : max_vector_rate = 0.0;
1330 76223 : for (i = 1; i < vlib_get_n_threads (); i++)
1331 : {
1332 57443 : vlib_main_t *ovm = vlib_get_main_by_index (i);
1333 57443 : max_vector_rate = clib_max (max_vector_rate,
1334 : (f64) vlib_last_vectors_per_main_loop (ovm));
1335 : }
1336 :
1337 18780 : vlib_worker_threads[0].barrier_sync_count++;
1338 :
1339 : /* Enforce minimum barrier open time to minimize packet loss */
1340 18780 : ASSERT (vm->barrier_no_close_before <= (now + BARRIER_MINIMUM_OPEN_LIMIT));
1341 :
1342 : /*
1343 : * If any worker thread seems busy, which we define
1344 : * as a vector rate above 10, we enforce the barrier hold-down timer
1345 : */
1346 18780 : if (max_vector_rate > 10.0)
1347 : {
1348 : while (1)
1349 : {
1350 79 : now = vlib_time_now (vm);
1351 : /* Barrier hold-down timer expired? */
1352 79 : if (now >= vm->barrier_no_close_before)
1353 79 : break;
1354 0 : if ((vm->barrier_no_close_before - now)
1355 : > (2.0 * BARRIER_MINIMUM_OPEN_LIMIT))
1356 : {
1357 0 : clib_warning
1358 : ("clock change: would have waited for %.4f seconds",
1359 : (vm->barrier_no_close_before - now));
1360 0 : break;
1361 : }
1362 : }
1363 : }
1364 : /* Record time of closure */
1365 18780 : t_open = now - vm->barrier_epoch;
1366 18780 : vm->barrier_epoch = now;
1367 :
1368 18780 : deadline = now + BARRIER_SYNC_TIMEOUT;
1369 :
1370 18780 : *vlib_worker_threads->wait_at_barrier = 1;
1371 7248640 : while (*vlib_worker_threads->workers_at_barrier != count)
1372 : {
1373 7229860 : if ((now = vlib_time_now (vm)) > deadline)
1374 : {
1375 0 : fformat (stderr, "%s: worker thread deadlock\n", __FUNCTION__);
1376 0 : os_panic ();
1377 : }
1378 : }
1379 :
1380 18780 : t_closed = now - vm->barrier_epoch;
1381 :
1382 18780 : barrier_trace_sync (t_entry, t_open, t_closed);
1383 :
1384 : }
1385 :
1386 : void
1387 2111710 : vlib_worker_thread_barrier_release (vlib_main_t * vm)
1388 : {
1389 2111710 : vlib_global_main_t *vgm = vlib_get_global_main ();
1390 : f64 deadline;
1391 : f64 now;
1392 : f64 minimum_open;
1393 : f64 t_entry;
1394 : f64 t_closed_total;
1395 2111710 : f64 t_update_main = 0.0;
1396 2111710 : int refork_needed = 0;
1397 :
1398 2111710 : if (vlib_get_n_threads () < 2)
1399 2073120 : return;
1400 :
1401 38591 : ASSERT (vlib_get_thread_index () == 0);
1402 :
1403 :
1404 38591 : now = vlib_time_now (vm);
1405 38591 : t_entry = now - vm->barrier_epoch;
1406 :
1407 38591 : if (--vlib_worker_threads[0].recursion_level > 0)
1408 : {
1409 19848 : barrier_trace_release_rec (t_entry);
1410 19848 : return;
1411 : }
1412 :
1413 : /* Update (all) node runtimes before releasing the barrier, if needed */
1414 18743 : if (vgm->need_vlib_worker_thread_node_runtime_update)
1415 : {
1416 : /*
1417 : * Lock stat segment here, so we's safe when
1418 : * rebuilding the stat segment node clones from the
1419 : * stat thread...
1420 : */
1421 524 : vlib_stats_segment_lock ();
1422 :
1423 : /* Do stats elements on main thread */
1424 524 : worker_thread_node_runtime_update_internal ();
1425 524 : vgm->need_vlib_worker_thread_node_runtime_update = 0;
1426 :
1427 : /* Do per thread rebuilds in parallel */
1428 524 : refork_needed = 1;
1429 524 : clib_atomic_fetch_add (vlib_worker_threads->node_reforks_required,
1430 : (vlib_get_n_threads () - 1));
1431 524 : now = vlib_time_now (vm);
1432 524 : t_update_main = now - vm->barrier_epoch;
1433 : }
1434 :
1435 18743 : deadline = now + BARRIER_SYNC_TIMEOUT;
1436 :
1437 : /*
1438 : * Note when we let go of the barrier.
1439 : * Workers can use this to derive a reasonably accurate
1440 : * time offset. See vlib_time_now(...)
1441 : */
1442 18743 : vm->time_last_barrier_release = vlib_time_now (vm);
1443 18743 : CLIB_MEMORY_STORE_BARRIER ();
1444 :
1445 18743 : *vlib_worker_threads->wait_at_barrier = 0;
1446 :
1447 228762 : while (*vlib_worker_threads->workers_at_barrier > 0)
1448 : {
1449 210019 : if ((now = vlib_time_now (vm)) > deadline)
1450 : {
1451 0 : fformat (stderr, "%s: worker thread deadlock\n", __FUNCTION__);
1452 0 : os_panic ();
1453 : }
1454 : }
1455 :
1456 : /* Wait for reforks before continuing */
1457 18743 : if (refork_needed)
1458 : {
1459 524 : now = vlib_time_now (vm);
1460 :
1461 524 : deadline = now + BARRIER_SYNC_TIMEOUT;
1462 :
1463 73340200 : while (*vlib_worker_threads->node_reforks_required > 0)
1464 : {
1465 73339700 : if ((now = vlib_time_now (vm)) > deadline)
1466 : {
1467 0 : fformat (stderr, "%s: worker thread refork deadlock\n",
1468 : __FUNCTION__);
1469 0 : os_panic ();
1470 : }
1471 : }
1472 524 : vlib_stats_segment_unlock ();
1473 : }
1474 :
1475 18743 : t_closed_total = now - vm->barrier_epoch;
1476 :
1477 18743 : minimum_open = t_closed_total * BARRIER_MINIMUM_OPEN_FACTOR;
1478 :
1479 18743 : if (minimum_open > BARRIER_MINIMUM_OPEN_LIMIT)
1480 : {
1481 2764 : minimum_open = BARRIER_MINIMUM_OPEN_LIMIT;
1482 : }
1483 :
1484 18743 : vm->barrier_no_close_before = now + minimum_open;
1485 :
1486 : /* Record barrier epoch (used to enforce minimum open time) */
1487 18743 : vm->barrier_epoch = now;
1488 :
1489 18743 : barrier_trace_release (t_entry, t_closed_total, t_update_main);
1490 :
1491 18743 : if (PREDICT_FALSE (vec_len (vm->barrier_perf_callbacks) != 0))
1492 0 : clib_call_callbacks (vm->barrier_perf_callbacks, vm,
1493 : vm->clib_time.last_cpu_time, 1 /* leave */ );
1494 : }
1495 :
1496 : static void
1497 0 : vlib_worker_sync_rpc (void *args)
1498 : {
1499 0 : ASSERT (vlib_thread_is_main_w_barrier ());
1500 0 : vlib_worker_threads->wait_before_barrier = 0;
1501 0 : }
1502 :
1503 : void
1504 0 : vlib_workers_sync (void)
1505 : {
1506 0 : if (PREDICT_FALSE (!vlib_num_workers ()))
1507 0 : return;
1508 :
1509 0 : if (!(*vlib_worker_threads->wait_at_barrier) &&
1510 0 : !clib_atomic_swap_rel_n (&vlib_worker_threads->wait_before_barrier, 1))
1511 : {
1512 0 : u32 thread_index = vlib_get_thread_index ();
1513 0 : vlib_rpc_call_main_thread (vlib_worker_sync_rpc, (u8 *) &thread_index,
1514 : sizeof (thread_index));
1515 : }
1516 :
1517 : /* Wait until main thread asks for barrier */
1518 0 : while (!(*vlib_worker_threads->wait_at_barrier))
1519 : ;
1520 :
1521 : /* Stop before barrier and make sure all threads are either
1522 : * at worker barrier or the barrier before it */
1523 0 : clib_atomic_fetch_add (&vlib_worker_threads->workers_before_barrier, 1);
1524 0 : while (vlib_num_workers () > (*vlib_worker_threads->workers_at_barrier +
1525 0 : vlib_worker_threads->workers_before_barrier))
1526 : ;
1527 : }
1528 :
1529 : void
1530 0 : vlib_workers_continue (void)
1531 : {
1532 0 : if (PREDICT_FALSE (!vlib_num_workers ()))
1533 0 : return;
1534 :
1535 0 : clib_atomic_fetch_add (&vlib_worker_threads->done_work_before_barrier, 1);
1536 :
1537 : /* Wait until all workers are done with work before barrier */
1538 0 : while (vlib_worker_threads->done_work_before_barrier <
1539 0 : vlib_worker_threads->workers_before_barrier)
1540 : ;
1541 :
1542 0 : clib_atomic_fetch_add (&vlib_worker_threads->done_work_before_barrier, -1);
1543 0 : clib_atomic_fetch_add (&vlib_worker_threads->workers_before_barrier, -1);
1544 : }
1545 :
1546 : /**
1547 : * Wait until each of the workers has been once around the track
1548 : */
1549 : void
1550 7679 : vlib_worker_wait_one_loop (void)
1551 : {
1552 7679 : vlib_global_main_t *vgm = vlib_get_global_main ();
1553 7679 : ASSERT (vlib_get_thread_index () == 0);
1554 :
1555 7679 : if (vlib_get_n_threads () < 2)
1556 7559 : return;
1557 :
1558 120 : if (vlib_worker_thread_barrier_held ())
1559 96 : return;
1560 :
1561 24 : u32 *counts = 0;
1562 : u32 ii;
1563 :
1564 24 : vec_validate (counts, vlib_get_n_threads () - 1);
1565 :
1566 : /* record the current loop counts */
1567 96 : vec_foreach_index (ii, vgm->vlib_mains)
1568 72 : counts[ii] = vgm->vlib_mains[ii]->main_loop_count;
1569 :
1570 : /* spin until each changes, apart from the main thread, or we'd be
1571 : * a while */
1572 72 : for (ii = 1; ii < vec_len (counts); ii++)
1573 : {
1574 2774 : while (counts[ii] == vgm->vlib_mains[ii]->main_loop_count)
1575 2726 : CLIB_PAUSE ();
1576 : }
1577 :
1578 24 : vec_free (counts);
1579 24 : return;
1580 : }
1581 :
1582 : void
1583 55 : vlib_worker_thread_fn (void *arg)
1584 : {
1585 55 : vlib_global_main_t *vgm = vlib_get_global_main ();
1586 55 : vlib_worker_thread_t *w = (vlib_worker_thread_t *) arg;
1587 55 : vlib_main_t *vm = vlib_get_main ();
1588 : clib_error_t *e;
1589 :
1590 55 : ASSERT (vm->thread_index == vlib_get_thread_index ());
1591 :
1592 55 : vlib_worker_thread_init (w);
1593 48 : clib_time_init (&vm->clib_time);
1594 53 : clib_mem_set_heap (w->thread_mheap);
1595 :
1596 52 : vm->worker_init_functions_called = hash_create (0, 0);
1597 :
1598 55 : e = vlib_call_init_exit_functions_no_sort (
1599 : vm, &vgm->worker_init_function_registrations, 1 /* call_once */,
1600 : 0 /* is_global */);
1601 55 : if (e)
1602 0 : clib_error_report (e);
1603 :
1604 55 : vlib_worker_loop (vm);
1605 0 : }
1606 :
1607 : /* *INDENT-OFF* */
1608 1151 : VLIB_REGISTER_THREAD (worker_thread_reg, static) = {
1609 : .name = "workers",
1610 : .short_name = "wk",
1611 : .function = vlib_worker_thread_fn,
1612 : };
1613 : /* *INDENT-ON* */
1614 :
1615 : extern clib_march_fn_registration
1616 : *vlib_frame_queue_dequeue_with_aux_fn_march_fn_registrations;
1617 : extern clib_march_fn_registration
1618 : *vlib_frame_queue_dequeue_fn_march_fn_registrations;
1619 : u32
1620 21856 : vlib_frame_queue_main_init (u32 node_index, u32 frame_queue_nelts)
1621 : {
1622 21856 : vlib_thread_main_t *tm = vlib_get_thread_main ();
1623 21856 : vlib_main_t *vm = vlib_get_main ();
1624 : vlib_frame_queue_main_t *fqm;
1625 : vlib_frame_queue_t *fq;
1626 : vlib_node_t *node;
1627 : int i;
1628 : u32 num_threads;
1629 :
1630 21856 : if (frame_queue_nelts == 0)
1631 21850 : frame_queue_nelts = FRAME_QUEUE_MAX_NELTS;
1632 :
1633 21856 : num_threads = 1 /* main thread */ + tm->n_threads;
1634 21856 : ASSERT (frame_queue_nelts >= 8 + num_threads);
1635 :
1636 21856 : vec_add2 (tm->frame_queue_mains, fqm, 1);
1637 :
1638 21856 : node = vlib_get_node (vm, fqm->node_index);
1639 21856 : ASSERT (node);
1640 21856 : if (node->aux_offset)
1641 : {
1642 0 : fqm->frame_queue_dequeue_fn =
1643 0 : CLIB_MARCH_FN_VOID_POINTER (vlib_frame_queue_dequeue_with_aux_fn);
1644 : }
1645 : else
1646 : {
1647 21856 : fqm->frame_queue_dequeue_fn =
1648 21856 : CLIB_MARCH_FN_VOID_POINTER (vlib_frame_queue_dequeue_fn);
1649 : }
1650 :
1651 21856 : fqm->node_index = node_index;
1652 21856 : fqm->frame_queue_nelts = frame_queue_nelts;
1653 :
1654 21856 : vec_validate (fqm->vlib_frame_queues, tm->n_vlib_mains - 1);
1655 21856 : vec_set_len (fqm->vlib_frame_queues, 0);
1656 45820 : for (i = 0; i < tm->n_vlib_mains; i++)
1657 : {
1658 23964 : fq = vlib_frame_queue_alloc (frame_queue_nelts);
1659 23964 : vec_add1 (fqm->vlib_frame_queues, fq);
1660 : }
1661 :
1662 21856 : return (fqm - tm->frame_queue_mains);
1663 : }
1664 :
1665 : void
1666 0 : vlib_process_signal_event_mt_helper (vlib_process_signal_event_mt_args_t *
1667 : args)
1668 : {
1669 0 : ASSERT (vlib_get_thread_index () == 0);
1670 0 : vlib_process_signal_event (vlib_get_main (), args->node_index,
1671 : args->type_opaque, args->data);
1672 0 : }
1673 :
1674 : void *rpc_call_main_thread_cb_fn;
1675 :
1676 : void
1677 18 : vlib_rpc_call_main_thread (void *callback, u8 * args, u32 arg_size)
1678 : {
1679 18 : if (rpc_call_main_thread_cb_fn)
1680 : {
1681 18 : void (*fp) (void *, u8 *, u32) = rpc_call_main_thread_cb_fn;
1682 18 : (*fp) (callback, args, arg_size);
1683 : }
1684 : else
1685 0 : clib_warning ("BUG: rpc_call_main_thread_cb_fn NULL!");
1686 18 : }
1687 :
1688 : clib_error_t *
1689 575 : threads_init (vlib_main_t * vm)
1690 : {
1691 575 : const vlib_thread_main_t *tm = vlib_get_thread_main ();
1692 :
1693 575 : if (tm->main_lcore == ~0 && tm->n_vlib_mains > 1)
1694 0 : return clib_error_return (0, "Configuration error, a main core must "
1695 : "be specified when using worker threads");
1696 :
1697 575 : return 0;
1698 : }
1699 :
1700 4607 : VLIB_INIT_FUNCTION (threads_init);
1701 :
1702 : static clib_error_t *
1703 39 : show_clock_command_fn (vlib_main_t * vm,
1704 : unformat_input_t * input, vlib_cli_command_t * cmd)
1705 : {
1706 39 : int verbose = 0;
1707 39 : clib_timebase_t _tb, *tb = &_tb;
1708 :
1709 39 : (void) unformat (input, "verbose %=", &verbose, 1);
1710 :
1711 39 : clib_timebase_init (tb, 0 /* GMT */ , CLIB_TIMEBASE_DAYLIGHT_NONE,
1712 : &vm->clib_time);
1713 :
1714 39 : vlib_cli_output (vm, "%U, %U GMT", format_clib_time, &vm->clib_time,
1715 : verbose, format_clib_timebase_time,
1716 : clib_timebase_now (tb));
1717 :
1718 39 : vlib_cli_output (vm, "Time last barrier release %.9f",
1719 : vm->time_last_barrier_release);
1720 :
1721 78 : foreach_vlib_main ()
1722 : {
1723 39 : vlib_cli_output (vm, "%d: %U", this_vlib_main->thread_index,
1724 39 : format_clib_time, &this_vlib_main->clib_time, verbose);
1725 :
1726 39 : vlib_cli_output (vm, "Thread %d offset %.9f error %.9f",
1727 39 : this_vlib_main->thread_index,
1728 39 : this_vlib_main->time_offset,
1729 39 : vm->time_last_barrier_release -
1730 39 : this_vlib_main->time_last_barrier_release);
1731 : }
1732 39 : return 0;
1733 : }
1734 :
1735 : /* *INDENT-OFF* */
1736 285289 : VLIB_CLI_COMMAND (f_command, static) =
1737 : {
1738 : .path = "show clock",
1739 : .short_help = "show clock",
1740 : .function = show_clock_command_fn,
1741 : };
1742 : /* *INDENT-ON* */
1743 :
1744 : vlib_thread_main_t *
1745 0 : vlib_get_thread_main_not_inline (void)
1746 : {
1747 0 : return vlib_get_thread_main ();
1748 : }
1749 :
1750 : /*
1751 : * fd.io coding-style-patch-verification: ON
1752 : *
1753 : * Local Variables:
1754 : * eval: (c-set-style "gnu")
1755 : * End:
1756 : */
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