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 18570 : barrier_trace_sync (f64 t_entry, f64 t_open, f64 t_closed)
47 : {
48 18570 : if (!vlib_worker_threads->barrier_elog_enabled)
49 18570 : 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 0 : } *ed = 0;
60 :
61 0 : ed = ELOG_DATA (&vlib_global_main.elog_main, e);
62 0 : ed->count = (int) vlib_worker_threads[0].barrier_sync_count;
63 0 : ed->caller = elog_string (&vlib_global_main.elog_main,
64 0 : (char *) vlib_worker_threads[0].barrier_caller);
65 0 : ed->t_entry = (int) (1000000.0 * t_entry);
66 0 : ed->t_open = (int) (1000000.0 * t_open);
67 0 : ed->t_closed = (int) (1000000.0 * t_closed);
68 : }
69 :
70 : static inline void
71 19986 : barrier_trace_sync_rec (f64 t_entry)
72 : {
73 19986 : if (!vlib_worker_threads->barrier_elog_enabled)
74 19986 : 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 0 : } *ed = 0;
85 :
86 0 : ed = ELOG_DATA (&vlib_global_main.elog_main, e);
87 0 : ed->depth = (int) vlib_worker_threads[0].recursion_level - 1;
88 0 : ed->caller = elog_string (&vlib_global_main.elog_main,
89 0 : (char *) vlib_worker_threads[0].barrier_caller);
90 : }
91 :
92 : static inline void
93 19986 : barrier_trace_release_rec (f64 t_entry)
94 : {
95 19986 : if (!vlib_worker_threads->barrier_elog_enabled)
96 19986 : 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 0 : } *ed = 0;
107 :
108 0 : ed = ELOG_DATA (&vlib_global_main.elog_main, e);
109 0 : ed->depth = (int) vlib_worker_threads[0].recursion_level;
110 : }
111 :
112 : static inline void
113 18534 : barrier_trace_release (f64 t_entry, f64 t_closed_total, f64 t_update_main)
114 : {
115 18534 : if (!vlib_worker_threads->barrier_elog_enabled)
116 18534 : 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 0 : } *ed = 0;
127 :
128 0 : ed = ELOG_DATA (&vlib_global_main.elog_main, e);
129 0 : ed->t_entry = (int) (1000000.0 * t_entry);
130 0 : ed->t_update_main = (int) (1000000.0 * t_update_main);
131 0 : ed->t_closed_total = (int) (1000000.0 * t_closed_total);
132 0 : ed->count = (int) vlib_worker_threads[0].barrier_sync_count;
133 :
134 : /* Reset context for next trace */
135 0 : vlib_worker_threads[0].barrier_context = NULL;
136 : }
137 :
138 : uword
139 12210 : os_get_nthreads (void)
140 : {
141 12210 : return vec_len (vlib_thread_stacks);
142 : }
143 :
144 : void
145 613 : vlib_set_thread_name (char *name)
146 : {
147 : int pthread_setname_np (pthread_t __target_thread, const char *__name);
148 : int rv;
149 613 : pthread_t thread = pthread_self ();
150 :
151 613 : if (thread)
152 : {
153 613 : rv = pthread_setname_np (thread, name);
154 613 : if (rv)
155 0 : clib_warning ("pthread_setname_np returned %d", rv);
156 : }
157 613 : }
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 *
173 559 : vlib_thread_init (vlib_main_t * vm)
174 : {
175 559 : vlib_thread_main_t *tm = &vlib_thread_main;
176 : vlib_worker_thread_t *w;
177 : vlib_thread_registration_t *tr;
178 559 : u32 n_vlib_mains = 1;
179 559 : 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 =
185 559 : vlib_stats_add_gauge ("/sys/num_worker_threads");
186 559 : ASSERT (stats_num_worker_threads_dir_index != ~0);
187 :
188 : /* get bitmaps of active cpu cores and sockets */
189 559 : tm->cpu_core_bitmap =
190 559 : clib_sysfs_list_to_bitmap ("/sys/devices/system/cpu/online");
191 559 : tm->cpu_socket_bitmap =
192 559 : clib_sysfs_list_to_bitmap ("/sys/devices/system/node/online");
193 :
194 559 : avail_cpu = clib_bitmap_dup (tm->cpu_core_bitmap);
195 :
196 : /* skip cores */
197 559 : 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 */
207 559 : if (tm->main_lcore != ~0)
208 : {
209 559 : 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);
212 559 : 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 */
216 559 : 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 */
220 559 : if (tm->main_lcore != ~0)
221 : {
222 : cpu_set_t cpuset;
223 559 : CPU_ZERO (&cpuset);
224 559 : CPU_SET (tm->main_lcore, &cpuset);
225 559 : pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
226 : }
227 :
228 : /* Set up thread 0 */
229 559 : vec_validate_aligned (vlib_worker_threads, 0, CLIB_CACHE_LINE_BYTES);
230 559 : vec_set_len (vlib_worker_threads, 1);
231 559 : w = vlib_worker_threads;
232 559 : w->thread_mheap = clib_mem_get_heap ();
233 559 : w->thread_stack = vlib_thread_stacks[0];
234 559 : w->cpu_id = tm->main_lcore;
235 559 : w->lwp = syscall (SYS_gettid);
236 559 : w->thread_id = pthread_self ();
237 559 : tm->n_vlib_mains = 1;
238 :
239 559 : vlib_get_thread_core_numa (w, w->cpu_id);
240 :
241 559 : 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 */
253 559 : tr = tm->next;
254 :
255 1118 : while (tr)
256 : {
257 559 : vec_add1 (tm->registrations, tr);
258 559 : tr = tr->next;
259 : }
260 :
261 559 : vec_sort_with_function (tm->registrations, sort_registrations_by_no_clone);
262 :
263 1118 : for (i = 0; i < vec_len (tm->registrations); i++)
264 : {
265 : int j;
266 559 : tr = tm->registrations[i];
267 559 : tr->first_index = first_index;
268 559 : first_index += tr->count;
269 559 : n_vlib_mains += (tr->no_data_structure_clone == 0) ? tr->count : 0;
270 :
271 : /* construct coremask */
272 559 : if (tr->use_pthreads || !tr->count)
273 523 : continue;
274 :
275 36 : if (tr->coremask)
276 : {
277 : uword c;
278 : /* *INDENT-OFF* */
279 90 : clib_bitmap_foreach (c, tr->coremask) {
280 54 : 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 54 : 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 :
316 559 : clib_bitmap_free (avail_cpu);
317 :
318 559 : tm->n_vlib_mains = n_vlib_mains;
319 559 : 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 : */
326 559 : vec_validate_aligned (vlib_worker_threads, first_index - 1,
327 : CLIB_CACHE_LINE_BYTES);
328 559 : vec_validate (vlib_thread_stacks, vec_len (vlib_worker_threads) - 1);
329 559 : return 0;
330 : }
331 :
332 : vlib_frame_queue_t *
333 23318 : vlib_frame_queue_alloc (int nelts)
334 : {
335 : vlib_frame_queue_t *fq;
336 :
337 23318 : fq = clib_mem_alloc_aligned (sizeof (*fq), CLIB_CACHE_LINE_BYTES);
338 23318 : clib_memset (fq, 0, sizeof (*fq));
339 23318 : fq->nelts = nelts;
340 23318 : fq->vector_threshold = 2 * VLIB_FRAME_SIZE;
341 23318 : vec_validate_aligned (fq->elts, nelts - 1, CLIB_CACHE_LINE_BYTES);
342 :
343 23318 : if (nelts & (nelts - 1))
344 : {
345 0 : fformat (stderr, "FATAL: nelts MUST be a power of 2\n");
346 0 : abort ();
347 : }
348 :
349 23318 : 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 54 : vlib_worker_thread_init (vlib_worker_thread_t * w)
361 : {
362 54 : 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 54 : clib_mem_set_heap (w->thread_mheap);
375 :
376 54 : if (vec_len (tm->thread_prefix) && w->registration->short_name)
377 : {
378 108 : w->name = format (0, "%v_%s_%d%c", tm->thread_prefix,
379 54 : w->registration->short_name, w->instance_id, '\0');
380 54 : vlib_set_thread_name ((char *) w->name);
381 : }
382 :
383 54 : if (!w->registration->use_pthreads)
384 : {
385 :
386 : /* Initial barrier sync, for both worker and i/o threads */
387 54 : clib_atomic_fetch_add (vlib_worker_threads->workers_at_barrier, 1);
388 :
389 4829510 : while (*vlib_worker_threads->wait_at_barrier)
390 : ;
391 :
392 54 : clib_atomic_fetch_add (vlib_worker_threads->workers_at_barrier, -1);
393 : }
394 54 : }
395 :
396 : void *
397 54 : vlib_worker_thread_bootstrap_fn (void *arg)
398 : {
399 54 : vlib_worker_thread_t *w = arg;
400 :
401 54 : w->lwp = syscall (SYS_gettid);
402 54 : w->thread_id = pthread_self ();
403 :
404 54 : __os_thread_index = w - vlib_worker_threads;
405 :
406 : if (CLIB_DEBUG > 0)
407 : {
408 54 : void *frame_addr = __builtin_frame_address (0);
409 54 : if (frame_addr < (void *) w->thread_stack ||
410 54 : 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 54 : w->thread_function (arg);
419 :
420 0 : return 0;
421 : }
422 :
423 : void
424 613 : vlib_get_thread_core_numa (vlib_worker_thread_t * w, unsigned cpu_id)
425 : {
426 613 : const char *sys_cpu_path = "/sys/devices/system/cpu/cpu";
427 613 : const char *sys_node_path = "/sys/devices/system/node/node";
428 613 : clib_bitmap_t *nbmp = 0, *cbmp = 0;
429 : u32 node;
430 613 : u8 *p = 0;
431 613 : int core_id = -1, numa_id = -1;
432 :
433 613 : p = format (p, "%s%u/topology/core_id%c", sys_cpu_path, cpu_id, 0);
434 613 : clib_sysfs_read ((char *) p, "%d", &core_id);
435 613 : vec_reset_length (p);
436 :
437 : /* *INDENT-OFF* */
438 613 : clib_sysfs_read ("/sys/devices/system/node/online", "%U",
439 : unformat_bitmap_list, &nbmp);
440 1839 : clib_bitmap_foreach (node, nbmp) {
441 1226 : p = format (p, "%s%u/cpulist%c", sys_node_path, node, 0);
442 1226 : clib_sysfs_read ((char *) p, "%U", unformat_bitmap_list, &cbmp);
443 1226 : if (clib_bitmap_get (cbmp, cpu_id))
444 613 : numa_id = node;
445 1226 : vec_reset_length (cbmp);
446 1226 : vec_reset_length (p);
447 : }
448 : /* *INDENT-ON* */
449 613 : vec_free (nbmp);
450 613 : vec_free (cbmp);
451 613 : vec_free (p);
452 :
453 613 : w->core_id = core_id;
454 613 : w->numa_id = numa_id;
455 613 : }
456 :
457 : static clib_error_t *
458 54 : vlib_launch_thread_int (void *fp, vlib_worker_thread_t * w, unsigned cpu_id)
459 : {
460 54 : clib_mem_main_t *mm = &clib_mem_main;
461 54 : vlib_thread_main_t *tm = &vlib_thread_main;
462 : pthread_t worker;
463 : pthread_attr_t attr;
464 : cpu_set_t cpuset;
465 54 : void *(*fp_arg) (void *) = fp;
466 : void *numa_heap;
467 :
468 54 : w->cpu_id = cpu_id;
469 54 : vlib_get_thread_core_numa (w, cpu_id);
470 :
471 : /* Set up NUMA-bound heap if indicated */
472 54 : if (mm->per_numa_mheaps[w->numa_id] == 0)
473 : {
474 : /* If the user requested a NUMA heap, create it... */
475 6 : 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 6 : mm->per_numa_mheaps[w->numa_id] = w->thread_mheap;
488 : }
489 : }
490 :
491 54 : CPU_ZERO (&cpuset);
492 54 : CPU_SET (cpu_id, &cpuset);
493 :
494 54 : if (pthread_attr_init (&attr))
495 0 : return clib_error_return_unix (0, "pthread_attr_init");
496 :
497 54 : 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 54 : if (pthread_create (&worker, &attr, fp_arg, (void *) w))
502 0 : return clib_error_return_unix (0, "pthread_create");
503 :
504 54 : if (pthread_setaffinity_np (worker, sizeof (cpu_set_t), &cpuset))
505 0 : return clib_error_return_unix (0, "pthread_setaffinity_np");
506 :
507 54 : if (pthread_attr_destroy (&attr))
508 0 : return clib_error_return_unix (0, "pthread_attr_destroy");
509 :
510 54 : return 0;
511 : }
512 :
513 : static clib_error_t *
514 559 : start_workers (vlib_main_t * vm)
515 : {
516 559 : vlib_global_main_t *vgm = vlib_get_global_main ();
517 559 : 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;
522 559 : vlib_thread_main_t *tm = &vlib_thread_main;
523 : vlib_thread_registration_t *tr;
524 : vlib_node_runtime_t *rt;
525 559 : u32 n_vlib_mains = tm->n_vlib_mains;
526 : u32 worker_thread_index;
527 559 : u32 stats_err_entry_index = fvm->error_main.stats_err_entry_index;
528 559 : clib_mem_heap_t *main_heap = clib_mem_get_per_cpu_heap ();
529 559 : vlib_stats_register_mem_heap (main_heap);
530 :
531 559 : vec_reset_length (vlib_worker_threads);
532 :
533 : /* Set up the main thread */
534 559 : vec_add2_aligned (vlib_worker_threads, w, 1, CLIB_CACHE_LINE_BYTES);
535 559 : w->elog_track.name = "main thread";
536 559 : elog_track_register (vlib_get_elog_main (), &w->elog_track);
537 :
538 559 : if (vec_len (tm->thread_prefix))
539 : {
540 559 : w->name = format (0, "%v_main%c", tm->thread_prefix, '\0');
541 559 : vlib_set_thread_name ((char *) w->name);
542 : }
543 :
544 559 : vgm->elog_main.lock =
545 559 : clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES);
546 559 : vgm->elog_main.lock[0] = 0;
547 :
548 559 : clib_callback_data_init (&vm->vlib_node_runtime_perf_callbacks,
549 : &vm->worker_thread_main_loop_callback_lock);
550 :
551 559 : vec_validate_aligned (vgm->vlib_mains, n_vlib_mains - 1,
552 : CLIB_CACHE_LINE_BYTES);
553 559 : vec_set_len (vgm->vlib_mains, 0);
554 559 : vec_add1_aligned (vgm->vlib_mains, vm, CLIB_CACHE_LINE_BYTES);
555 :
556 559 : if (n_vlib_mains > 1)
557 : {
558 72 : vlib_worker_threads->wait_at_barrier =
559 36 : clib_mem_alloc_aligned (sizeof (u32), CLIB_CACHE_LINE_BYTES);
560 72 : vlib_worker_threads->workers_at_barrier =
561 36 : clib_mem_alloc_aligned (sizeof (u32), CLIB_CACHE_LINE_BYTES);
562 :
563 72 : vlib_worker_threads->node_reforks_required =
564 36 : clib_mem_alloc_aligned (sizeof (u32), CLIB_CACHE_LINE_BYTES);
565 :
566 : /* We'll need the rpc vector lock... */
567 36 : clib_spinlock_init (&vm->pending_rpc_lock);
568 :
569 : /* Ask for an initial barrier sync */
570 36 : *vlib_worker_threads->workers_at_barrier = 0;
571 36 : *vlib_worker_threads->wait_at_barrier = 1;
572 :
573 : /* Without update or refork */
574 36 : *vlib_worker_threads->node_reforks_required = 0;
575 36 : vgm->need_vlib_worker_thread_node_runtime_update = 0;
576 :
577 : /* init timing */
578 36 : vm->barrier_epoch = 0;
579 36 : vm->barrier_no_close_before = 0;
580 :
581 36 : worker_thread_index = 1;
582 36 : clib_spinlock_init (&vm->worker_thread_main_loop_callback_lock);
583 :
584 72 : for (i = 0; i < vec_len (tm->registrations); i++)
585 : {
586 : vlib_node_main_t *nm, *nm_clone;
587 : int k;
588 :
589 36 : tr = tm->registrations[i];
590 :
591 36 : if (tr->count == 0)
592 0 : continue;
593 :
594 90 : for (k = 0; k < tr->count; k++)
595 : {
596 : vlib_node_t *n;
597 : u64 **c;
598 :
599 54 : vec_add2 (vlib_worker_threads, w, 1);
600 : /* Currently unused, may not really work */
601 54 : 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 54 : w->thread_mheap = main_heap;
608 :
609 108 : w->thread_stack =
610 54 : vlib_thread_stack_init (w - vlib_worker_threads);
611 54 : w->thread_function = tr->function;
612 54 : w->thread_function_arg = w;
613 54 : w->instance_id = k;
614 54 : w->registration = tr;
615 :
616 108 : w->elog_track.name =
617 54 : (char *) format (0, "%s %d", tr->name, k + 1);
618 54 : vec_add1 (w->elog_track.name, 0);
619 54 : elog_track_register (vlib_get_elog_main (), &w->elog_track);
620 :
621 54 : if (tr->no_data_structure_clone)
622 0 : continue;
623 :
624 : /* Fork vlib_global_main et al. Look for bugs here */
625 54 : oldheap = clib_mem_set_heap (w->thread_mheap);
626 :
627 54 : vm_clone = clib_mem_alloc_aligned (sizeof (*vm_clone),
628 : CLIB_CACHE_LINE_BYTES);
629 54 : clib_memcpy (vm_clone, vlib_get_first_main (),
630 : sizeof (*vm_clone));
631 :
632 54 : vm_clone->thread_index = worker_thread_index;
633 54 : vm_clone->pending_rpc_requests = 0;
634 54 : vec_validate (vm_clone->pending_rpc_requests, 0);
635 54 : vec_set_len (vm_clone->pending_rpc_requests, 0);
636 54 : clib_memset (&vm_clone->random_buffer, 0,
637 : sizeof (vm_clone->random_buffer));
638 54 : clib_spinlock_init
639 : (&vm_clone->worker_thread_main_loop_callback_lock);
640 54 : clib_callback_data_init
641 : (&vm_clone->vlib_node_runtime_perf_callbacks,
642 : &vm_clone->worker_thread_main_loop_callback_lock);
643 :
644 54 : nm = &vlib_get_first_main ()->node_main;
645 54 : nm_clone = &vm_clone->node_main;
646 : /* fork next frames array, preserving node runtime indices */
647 54 : nm_clone->next_frames = vec_dup_aligned (nm->next_frames,
648 : CLIB_CACHE_LINE_BYTES);
649 116586 : for (j = 0; j < vec_len (nm_clone->next_frames); j++)
650 : {
651 116532 : vlib_next_frame_t *nf = &nm_clone->next_frames[j];
652 : u32 save_node_runtime_index;
653 : u32 save_flags;
654 :
655 116532 : save_node_runtime_index = nf->node_runtime_index;
656 116532 : save_flags = nf->flags & VLIB_FRAME_NO_FREE_AFTER_DISPATCH;
657 116532 : vlib_next_frame_init (nf);
658 116532 : nf->node_runtime_index = save_node_runtime_index;
659 116532 : nf->flags = save_flags;
660 : }
661 :
662 : /* fork the frame dispatch queue */
663 54 : nm_clone->pending_frames = 0;
664 54 : vec_validate (nm_clone->pending_frames, 10);
665 54 : vec_set_len (nm_clone->pending_frames, 0);
666 :
667 : /* fork nodes */
668 54 : nm_clone->nodes = 0;
669 :
670 : /* Allocate all nodes in single block for speed */
671 54 : n = clib_mem_alloc_no_fail (vec_len (nm->nodes) * sizeof (*n));
672 :
673 38523 : for (j = 0; j < vec_len (nm->nodes); j++)
674 : {
675 38469 : clib_memcpy (n, nm->nodes[j], sizeof (*n));
676 : /* none of the copied nodes have enqueue rights given out */
677 38469 : n->owner_node_index = VLIB_INVALID_NODE_INDEX;
678 38469 : clib_memset (&n->stats_total, 0, sizeof (n->stats_total));
679 38469 : clib_memset (&n->stats_last_clear, 0,
680 : sizeof (n->stats_last_clear));
681 38469 : vec_add1 (nm_clone->nodes, n);
682 38469 : n++;
683 : }
684 54 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_INTERNAL] =
685 54 : vec_dup_aligned (nm->nodes_by_type[VLIB_NODE_TYPE_INTERNAL],
686 : CLIB_CACHE_LINE_BYTES);
687 34365 : vec_foreach (rt,
688 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_INTERNAL])
689 : {
690 34311 : vlib_node_t *n = vlib_get_node (vm, rt->node_index);
691 : /* copy initial runtime_data from node */
692 34311 : 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 54 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT] =
699 54 : vec_dup_aligned (nm->nodes_by_type[VLIB_NODE_TYPE_INPUT],
700 : CLIB_CACHE_LINE_BYTES);
701 54 : clib_interrupt_init (
702 : &nm_clone->interrupts,
703 54 : vec_len (nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT]));
704 1512 : vec_foreach (rt, nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT])
705 : {
706 1458 : vlib_node_t *n = vlib_get_node (vm, rt->node_index);
707 : /* copy initial runtime_data from node */
708 1458 : if (n->runtime_data && n->runtime_data_bytes > 0)
709 0 : clib_memcpy (rt->runtime_data, n->runtime_data,
710 : clib_min (VLIB_NODE_RUNTIME_DATA_SIZE,
711 : n->runtime_data_bytes));
712 : }
713 :
714 54 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT] =
715 54 : vec_dup_aligned (nm->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT],
716 : CLIB_CACHE_LINE_BYTES);
717 216 : vec_foreach (rt,
718 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT])
719 : {
720 162 : vlib_node_t *n = vlib_get_node (vm, rt->node_index);
721 : /* copy initial runtime_data from node */
722 162 : if (n->runtime_data && n->runtime_data_bytes > 0)
723 0 : clib_memcpy (rt->runtime_data, n->runtime_data,
724 : clib_min (VLIB_NODE_RUNTIME_DATA_SIZE,
725 : n->runtime_data_bytes));
726 : }
727 :
728 54 : nm_clone->processes = vec_dup_aligned (nm->processes,
729 : CLIB_CACHE_LINE_BYTES);
730 :
731 : /* Create per-thread frame freelist */
732 54 : nm_clone->frame_sizes = 0;
733 54 : nm_clone->node_by_error = nm->node_by_error;
734 :
735 : /* Packet trace buffers are guaranteed to be empty, nothing to do here */
736 :
737 54 : clib_mem_set_heap (oldheap);
738 54 : vec_add1_aligned (vgm->vlib_mains, vm_clone,
739 : CLIB_CACHE_LINE_BYTES);
740 :
741 : /* Switch to the stats segment ... */
742 54 : vlib_stats_validate (stats_err_entry_index, worker_thread_index,
743 54 : vec_len (fvm->error_main.counters) - 1);
744 54 : c = vlib_stats_get_entry_data_pointer (stats_err_entry_index);
745 54 : vm_clone->error_main.counters = c[worker_thread_index];
746 :
747 54 : vm_clone->error_main.counters_last_clear = vec_dup_aligned (
748 : vlib_get_first_main ()->error_main.counters_last_clear,
749 : CLIB_CACHE_LINE_BYTES);
750 :
751 54 : worker_thread_index++;
752 : }
753 : }
754 : }
755 : else
756 : {
757 : /* only have non-data-structure copy threads to create... */
758 1046 : for (i = 0; i < vec_len (tm->registrations); i++)
759 : {
760 523 : tr = tm->registrations[i];
761 :
762 523 : for (j = 0; j < tr->count; j++)
763 : {
764 0 : vec_add2 (vlib_worker_threads, w, 1);
765 0 : if (tr->mheap_size)
766 : {
767 0 : w->thread_mheap = clib_mem_create_heap (0, tr->mheap_size,
768 : /* locked */ 0,
769 : "%s%d heap",
770 : tr->name, j);
771 : }
772 : else
773 0 : w->thread_mheap = main_heap;
774 0 : w->thread_stack =
775 0 : vlib_thread_stack_init (w - vlib_worker_threads);
776 0 : w->thread_function = tr->function;
777 0 : w->thread_function_arg = w;
778 0 : w->instance_id = j;
779 0 : w->elog_track.name =
780 0 : (char *) format (0, "%s %d", tr->name, j + 1);
781 0 : w->registration = tr;
782 0 : vec_add1 (w->elog_track.name, 0);
783 0 : elog_track_register (vlib_get_elog_main (), &w->elog_track);
784 : }
785 : }
786 : }
787 :
788 559 : worker_thread_index = 1;
789 :
790 1118 : for (i = 0; i < vec_len (tm->registrations); i++)
791 : {
792 : clib_error_t *err;
793 : int j;
794 :
795 559 : tr = tm->registrations[i];
796 :
797 559 : if (tr->use_pthreads || tm->use_pthreads)
798 : {
799 0 : for (j = 0; j < tr->count; j++)
800 : {
801 0 : w = vlib_worker_threads + worker_thread_index++;
802 0 : err = vlib_launch_thread_int (vlib_worker_thread_bootstrap_fn,
803 : w, 0);
804 0 : if (err)
805 0 : clib_error_report (err);
806 : }
807 : }
808 : else
809 : {
810 : uword c;
811 : /* *INDENT-OFF* */
812 613 : clib_bitmap_foreach (c, tr->coremask) {
813 54 : w = vlib_worker_threads + worker_thread_index++;
814 54 : err = vlib_launch_thread_int (vlib_worker_thread_bootstrap_fn,
815 : w, c);
816 54 : if (err)
817 0 : clib_error_report (err);
818 : }
819 : /* *INDENT-ON* */
820 : }
821 : }
822 559 : vlib_worker_thread_barrier_sync (vm);
823 : {
824 : clib_error_t *err;
825 559 : err = vlib_call_init_exit_functions (
826 : vm, &vgm->num_workers_change_function_registrations, 1 /* call_once */,
827 : 1 /* is_global */);
828 559 : if (err)
829 0 : clib_error_report (err);
830 : }
831 559 : vlib_worker_thread_barrier_release (vm);
832 559 : return 0;
833 : }
834 :
835 1119 : VLIB_MAIN_LOOP_ENTER_FUNCTION (start_workers);
836 :
837 :
838 : static inline void
839 513 : worker_thread_node_runtime_update_internal (void)
840 : {
841 : int i, j;
842 : vlib_main_t *vm;
843 : vlib_node_main_t *nm, *nm_clone;
844 : vlib_main_t *vm_clone;
845 : vlib_node_runtime_t *rt;
846 :
847 513 : ASSERT (vlib_get_thread_index () == 0);
848 :
849 513 : vm = vlib_get_first_main ();
850 513 : nm = &vm->node_main;
851 :
852 513 : ASSERT (*vlib_worker_threads->wait_at_barrier == 1);
853 :
854 : /*
855 : * Scrape all runtime stats, so we don't lose node runtime(s) with
856 : * pending counts, or throw away worker / io thread counts.
857 : */
858 369165 : for (j = 0; j < vec_len (nm->nodes); j++)
859 : {
860 : vlib_node_t *n;
861 368652 : n = nm->nodes[j];
862 368652 : vlib_node_sync_stats (vm, n);
863 : }
864 :
865 1551 : for (i = 1; i < vlib_get_n_threads (); i++)
866 : {
867 : vlib_node_t *n;
868 :
869 1038 : vm_clone = vlib_get_main_by_index (i);
870 1038 : nm_clone = &vm_clone->node_main;
871 :
872 749458 : for (j = 0; j < vec_len (nm_clone->nodes); j++)
873 : {
874 748420 : n = nm_clone->nodes[j];
875 :
876 748420 : rt = vlib_node_get_runtime (vm_clone, n->index);
877 748420 : vlib_node_runtime_sync_stats (vm_clone, rt, 0, 0, 0);
878 : }
879 : }
880 :
881 : /* Per-worker clone rebuilds are now done on each thread */
882 513 : }
883 :
884 :
885 : void
886 901 : vlib_worker_thread_node_refork (void)
887 : {
888 : vlib_main_t *vm, *vm_clone;
889 : vlib_node_main_t *nm, *nm_clone;
890 : vlib_node_t **old_nodes_clone;
891 : vlib_node_runtime_t *rt, *old_rt;
892 : u64 **c;
893 :
894 : vlib_node_t *new_n_clone;
895 :
896 : int j;
897 :
898 901 : vm = vlib_get_first_main ();
899 814 : nm = &vm->node_main;
900 814 : vm_clone = vlib_get_main ();
901 737 : nm_clone = &vm_clone->node_main;
902 :
903 : /* Re-clone error heap */
904 737 : u64 *old_counters_all_clear = vm_clone->error_main.counters_last_clear;
905 :
906 737 : clib_memcpy_fast (&vm_clone->error_main, &vm->error_main,
907 : sizeof (vm->error_main));
908 644 : j = vec_len (vm->error_main.counters) - 1;
909 :
910 647 : c = vlib_stats_get_entry_data_pointer (vm->error_main.stats_err_entry_index);
911 636 : vm_clone->error_main.counters = c[vm_clone->thread_index];
912 :
913 636 : vec_validate_aligned (old_counters_all_clear, j, CLIB_CACHE_LINE_BYTES);
914 1193 : vm_clone->error_main.counters_last_clear = old_counters_all_clear;
915 :
916 1335850 : for (j = 0; j < vec_len (nm_clone->next_frames); j++)
917 : {
918 1335650 : vlib_next_frame_t *nf = &nm_clone->next_frames[j];
919 1335650 : if ((nf->flags & VLIB_FRAME_IS_ALLOCATED) && nf->frame != NULL)
920 : {
921 1351 : vlib_frame_t *f = nf->frame;
922 1351 : nf->frame = NULL;
923 1351 : vlib_frame_free (vm_clone, f);
924 : }
925 : }
926 :
927 874 : vec_free (nm_clone->next_frames);
928 1038 : nm_clone->next_frames = vec_dup_aligned (nm->next_frames,
929 : CLIB_CACHE_LINE_BYTES);
930 :
931 1662580 : for (j = 0; j < vec_len (nm_clone->next_frames); j++)
932 : {
933 1664860 : vlib_next_frame_t *nf = &nm_clone->next_frames[j];
934 : u32 save_node_runtime_index;
935 : u32 save_flags;
936 :
937 1664860 : save_node_runtime_index = nf->node_runtime_index;
938 1664860 : save_flags = nf->flags & VLIB_FRAME_NO_FREE_AFTER_DISPATCH;
939 1664860 : vlib_next_frame_init (nf);
940 1662150 : nf->node_runtime_index = save_node_runtime_index;
941 1662150 : nf->flags = save_flags;
942 : }
943 :
944 1028 : old_nodes_clone = nm_clone->nodes;
945 1028 : nm_clone->nodes = 0;
946 :
947 : /* re-fork nodes */
948 :
949 : /* Allocate all nodes in single block for speed */
950 1038 : new_n_clone =
951 1028 : clib_mem_alloc_no_fail (vec_len (nm->nodes) * sizeof (*new_n_clone));
952 586104 : for (j = 0; j < vec_len (nm->nodes); j++)
953 : {
954 577809 : vlib_node_t *new_n = nm->nodes[j];
955 :
956 577809 : clib_memcpy_fast (new_n_clone, new_n, sizeof (*new_n));
957 : /* none of the copied nodes have enqueue rights given out */
958 574146 : new_n_clone->owner_node_index = VLIB_INVALID_NODE_INDEX;
959 :
960 574146 : if (j >= vec_len (old_nodes_clone))
961 : {
962 : /* new node, set to zero */
963 338 : clib_memset (&new_n_clone->stats_total, 0,
964 : sizeof (new_n_clone->stats_total));
965 338 : clib_memset (&new_n_clone->stats_last_clear, 0,
966 : sizeof (new_n_clone->stats_last_clear));
967 : }
968 : else
969 : {
970 574982 : vlib_node_t *old_n_clone = old_nodes_clone[j];
971 : /* Copy stats if the old data is valid */
972 574982 : clib_memcpy_fast (&new_n_clone->stats_total,
973 574982 : &old_n_clone->stats_total,
974 : sizeof (new_n_clone->stats_total));
975 570816 : clib_memcpy_fast (&new_n_clone->stats_last_clear,
976 570816 : &old_n_clone->stats_last_clear,
977 : sizeof (new_n_clone->stats_last_clear));
978 :
979 : /* keep previous node state */
980 591117 : new_n_clone->state = old_n_clone->state;
981 591117 : new_n_clone->flags = old_n_clone->flags;
982 : }
983 591455 : vec_add1 (nm_clone->nodes, new_n_clone);
984 585066 : new_n_clone++;
985 : }
986 : /* Free the old node clones */
987 1033 : clib_mem_free (old_nodes_clone[0]);
988 :
989 1038 : vec_free (old_nodes_clone);
990 :
991 :
992 : /* re-clone internal nodes */
993 1038 : old_rt = nm_clone->nodes_by_type[VLIB_NODE_TYPE_INTERNAL];
994 928 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_INTERNAL] =
995 1038 : vec_dup_aligned (nm->nodes_by_type[VLIB_NODE_TYPE_INTERNAL],
996 : CLIB_CACHE_LINE_BYTES);
997 :
998 616842 : vec_foreach (rt, nm_clone->nodes_by_type[VLIB_NODE_TYPE_INTERNAL])
999 : {
1000 615948 : vlib_node_t *n = vlib_get_node (vm, rt->node_index);
1001 : /* copy runtime_data, will be overwritten later for existing rt */
1002 615977 : if (n->runtime_data && n->runtime_data_bytes > 0)
1003 0 : clib_memcpy_fast (rt->runtime_data, n->runtime_data,
1004 0 : clib_min (VLIB_NODE_RUNTIME_DATA_SIZE,
1005 : n->runtime_data_bytes));
1006 : }
1007 :
1008 605141 : for (j = 0; j < vec_len (old_rt); j++)
1009 : {
1010 604113 : rt = vlib_node_get_runtime (vm_clone, old_rt[j].node_index);
1011 605976 : rt->state = old_rt[j].state;
1012 605976 : rt->flags = old_rt[j].flags;
1013 605976 : clib_memcpy_fast (rt->runtime_data, old_rt[j].runtime_data,
1014 : VLIB_NODE_RUNTIME_DATA_SIZE);
1015 : }
1016 :
1017 1038 : vec_free (old_rt);
1018 :
1019 : /* re-clone input nodes */
1020 1038 : old_rt = nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT];
1021 1038 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT] =
1022 1038 : vec_dup_aligned (nm->nodes_by_type[VLIB_NODE_TYPE_INPUT],
1023 : CLIB_CACHE_LINE_BYTES);
1024 1038 : clib_interrupt_resize (
1025 : &nm_clone->interrupts,
1026 1038 : vec_len (nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT]));
1027 :
1028 29064 : vec_foreach (rt, nm_clone->nodes_by_type[VLIB_NODE_TYPE_INPUT])
1029 : {
1030 28026 : vlib_node_t *n = vlib_get_node (vm, rt->node_index);
1031 : /* copy runtime_data, will be overwritten later for existing rt */
1032 28026 : if (n->runtime_data && n->runtime_data_bytes > 0)
1033 0 : clib_memcpy_fast (rt->runtime_data, n->runtime_data,
1034 0 : clib_min (VLIB_NODE_RUNTIME_DATA_SIZE,
1035 : n->runtime_data_bytes));
1036 : }
1037 :
1038 29053 : for (j = 0; j < vec_len (old_rt); j++)
1039 : {
1040 28018 : rt = vlib_node_get_runtime (vm_clone, old_rt[j].node_index);
1041 28018 : rt->state = old_rt[j].state;
1042 28018 : rt->flags = old_rt[j].flags;
1043 28018 : clib_memcpy_fast (rt->runtime_data, old_rt[j].runtime_data,
1044 : VLIB_NODE_RUNTIME_DATA_SIZE);
1045 : }
1046 :
1047 1038 : vec_free (old_rt);
1048 :
1049 : /* re-clone pre-input nodes */
1050 1038 : old_rt = nm_clone->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT];
1051 1038 : nm_clone->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT] =
1052 1038 : vec_dup_aligned (nm->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT],
1053 : CLIB_CACHE_LINE_BYTES);
1054 :
1055 4152 : vec_foreach (rt, nm_clone->nodes_by_type[VLIB_NODE_TYPE_PRE_INPUT])
1056 : {
1057 3114 : vlib_node_t *n = vlib_get_node (vm, rt->node_index);
1058 : /* copy runtime_data, will be overwritten later for existing rt */
1059 3114 : if (n->runtime_data && n->runtime_data_bytes > 0)
1060 0 : clib_memcpy_fast (rt->runtime_data, n->runtime_data,
1061 0 : clib_min (VLIB_NODE_RUNTIME_DATA_SIZE,
1062 : n->runtime_data_bytes));
1063 : }
1064 :
1065 4152 : for (j = 0; j < vec_len (old_rt); j++)
1066 : {
1067 3114 : rt = vlib_node_get_runtime (vm_clone, old_rt[j].node_index);
1068 3114 : rt->state = old_rt[j].state;
1069 3114 : rt->flags = old_rt[j].flags;
1070 3114 : clib_memcpy_fast (rt->runtime_data, old_rt[j].runtime_data,
1071 : VLIB_NODE_RUNTIME_DATA_SIZE);
1072 : }
1073 :
1074 1038 : vec_free (old_rt);
1075 :
1076 1038 : vec_free (nm_clone->processes);
1077 1038 : nm_clone->processes = vec_dup_aligned (nm->processes,
1078 : CLIB_CACHE_LINE_BYTES);
1079 1038 : nm_clone->node_by_error = nm->node_by_error;
1080 1038 : }
1081 :
1082 : void
1083 1265910 : vlib_worker_thread_node_runtime_update (void)
1084 : {
1085 : /*
1086 : * Make a note that we need to do a node runtime update
1087 : * prior to releasing the barrier.
1088 : */
1089 1265910 : vlib_global_main.need_vlib_worker_thread_node_runtime_update = 1;
1090 1265910 : }
1091 :
1092 : u32
1093 0 : unformat_sched_policy (unformat_input_t * input, va_list * args)
1094 : {
1095 0 : u32 *r = va_arg (*args, u32 *);
1096 :
1097 : if (0);
1098 : #define _(v,f,s) else if (unformat (input, s)) *r = SCHED_POLICY_##f;
1099 0 : foreach_sched_policy
1100 : #undef _
1101 : else
1102 0 : return 0;
1103 0 : return 1;
1104 : }
1105 :
1106 : static clib_error_t *
1107 559 : cpu_config (vlib_main_t * vm, unformat_input_t * input)
1108 : {
1109 : vlib_thread_registration_t *tr;
1110 : uword *p;
1111 559 : vlib_thread_main_t *tm = &vlib_thread_main;
1112 : u8 *name;
1113 : uword *bitmap;
1114 : u32 count;
1115 :
1116 559 : tm->thread_registrations_by_name = hash_create_string (0, sizeof (uword));
1117 :
1118 559 : tm->n_thread_stacks = 1; /* account for main thread */
1119 559 : tm->sched_policy = ~0;
1120 559 : tm->sched_priority = ~0;
1121 559 : tm->main_lcore = ~0;
1122 :
1123 559 : tr = tm->next;
1124 :
1125 1118 : while (tr)
1126 : {
1127 1118 : hash_set_mem (tm->thread_registrations_by_name, tr->name, (uword) tr);
1128 559 : tr = tr->next;
1129 : }
1130 :
1131 1174 : while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1132 : {
1133 615 : if (unformat (input, "use-pthreads"))
1134 0 : tm->use_pthreads = 1;
1135 615 : else if (unformat (input, "thread-prefix %v", &tm->thread_prefix))
1136 : ;
1137 615 : else if (unformat (input, "main-core %u", &tm->main_lcore))
1138 : ;
1139 56 : else if (unformat (input, "skip-cores %u", &tm->skip_cores))
1140 : ;
1141 56 : else if (unformat (input, "numa-heap-size %U",
1142 : unformat_memory_size, &tm->numa_heap_size))
1143 : ;
1144 56 : else if (unformat (input, "coremask-%s %U", &name,
1145 56 : unformat_bitmap_mask, &bitmap) ||
1146 56 : unformat (input, "corelist-%s %U", &name,
1147 : unformat_bitmap_list, &bitmap))
1148 : {
1149 112 : p = hash_get_mem (tm->thread_registrations_by_name, name);
1150 56 : if (p == 0)
1151 0 : return clib_error_return (0, "no such thread type '%s'", name);
1152 :
1153 56 : tr = (vlib_thread_registration_t *) p[0];
1154 :
1155 56 : if (tr->use_pthreads)
1156 0 : return clib_error_return (0,
1157 : "corelist cannot be set for '%s' threads",
1158 : name);
1159 56 : if (tr->count)
1160 0 : return clib_error_return
1161 : (0, "core placement of '%s' threads is already configured",
1162 : name);
1163 :
1164 56 : tr->coremask = bitmap;
1165 56 : tr->count = clib_bitmap_count_set_bits (tr->coremask);
1166 : }
1167 : else
1168 0 : if (unformat
1169 : (input, "scheduler-policy %U", unformat_sched_policy,
1170 : &tm->sched_policy))
1171 : ;
1172 0 : else if (unformat (input, "scheduler-priority %u", &tm->sched_priority))
1173 : ;
1174 0 : else if (unformat (input, "%s %u", &name, &count))
1175 : {
1176 0 : p = hash_get_mem (tm->thread_registrations_by_name, name);
1177 0 : if (p == 0)
1178 0 : return clib_error_return (0, "no such thread type 3 '%s'", name);
1179 :
1180 0 : tr = (vlib_thread_registration_t *) p[0];
1181 :
1182 0 : if (tr->fixed_count)
1183 0 : return clib_error_return
1184 : (0, "number of '%s' threads not configurable", name);
1185 0 : if (tr->count)
1186 0 : return clib_error_return
1187 : (0, "number of '%s' threads is already configured", name);
1188 :
1189 0 : tr->count = count;
1190 : }
1191 : else
1192 0 : break;
1193 : }
1194 :
1195 559 : if (tm->sched_priority != ~0)
1196 : {
1197 0 : if (tm->sched_policy == SCHED_FIFO || tm->sched_policy == SCHED_RR)
1198 0 : {
1199 0 : u32 prio_max = sched_get_priority_max (tm->sched_policy);
1200 0 : u32 prio_min = sched_get_priority_min (tm->sched_policy);
1201 0 : if (tm->sched_priority > prio_max)
1202 0 : tm->sched_priority = prio_max;
1203 0 : if (tm->sched_priority < prio_min)
1204 0 : tm->sched_priority = prio_min;
1205 : }
1206 : else
1207 : {
1208 0 : return clib_error_return
1209 : (0,
1210 : "scheduling priority (%d) is not allowed for `normal` scheduling policy",
1211 : tm->sched_priority);
1212 : }
1213 : }
1214 559 : tr = tm->next;
1215 :
1216 559 : if (!tm->thread_prefix)
1217 559 : tm->thread_prefix = format (0, "vpp");
1218 :
1219 1118 : while (tr)
1220 : {
1221 559 : tm->n_thread_stacks += tr->count;
1222 559 : tm->n_pthreads += tr->count * tr->use_pthreads;
1223 559 : tm->n_threads += tr->count * (tr->use_pthreads == 0);
1224 559 : tr = tr->next;
1225 : }
1226 :
1227 559 : return 0;
1228 : }
1229 :
1230 7306 : VLIB_EARLY_CONFIG_FUNCTION (cpu_config, "cpu");
1231 :
1232 : /*
1233 : * Enforce minimum open time to minimize packet loss due to Rx overflow,
1234 : * based on a test based heuristic that barrier should be open for at least
1235 : * 3 time as long as it is closed (with an upper bound of 1ms because by that
1236 : * point it is probably too late to make a difference)
1237 : */
1238 :
1239 : #ifndef BARRIER_MINIMUM_OPEN_LIMIT
1240 : #define BARRIER_MINIMUM_OPEN_LIMIT 0.001
1241 : #endif
1242 :
1243 : #ifndef BARRIER_MINIMUM_OPEN_FACTOR
1244 : #define BARRIER_MINIMUM_OPEN_FACTOR 3
1245 : #endif
1246 :
1247 : void
1248 559 : vlib_worker_thread_initial_barrier_sync_and_release (vlib_main_t * vm)
1249 : {
1250 : f64 deadline;
1251 559 : f64 now = vlib_time_now (vm);
1252 559 : u32 count = vlib_get_n_threads () - 1;
1253 :
1254 : /* No worker threads? */
1255 559 : if (count == 0)
1256 523 : return;
1257 :
1258 36 : deadline = now + BARRIER_SYNC_TIMEOUT;
1259 36 : *vlib_worker_threads->wait_at_barrier = 1;
1260 408543 : while (*vlib_worker_threads->workers_at_barrier != count)
1261 : {
1262 408507 : if ((now = vlib_time_now (vm)) > deadline)
1263 : {
1264 0 : fformat (stderr, "%s: worker thread deadlock\n", __FUNCTION__);
1265 0 : os_panic ();
1266 : }
1267 408507 : CLIB_PAUSE ();
1268 : }
1269 36 : *vlib_worker_threads->wait_at_barrier = 0;
1270 : }
1271 :
1272 : /**
1273 : * Return true if the wroker thread barrier is held
1274 : */
1275 : u8
1276 18481 : vlib_worker_thread_barrier_held (void)
1277 : {
1278 18481 : if (vlib_get_n_threads () < 2)
1279 18071 : return (1);
1280 :
1281 410 : return (*vlib_worker_threads->wait_at_barrier == 1);
1282 : }
1283 :
1284 : void
1285 2012570 : vlib_worker_thread_barrier_sync_int (vlib_main_t * vm, const char *func_name)
1286 : {
1287 : f64 deadline;
1288 : f64 now;
1289 : f64 t_entry;
1290 : f64 t_open;
1291 : f64 t_closed;
1292 : f64 max_vector_rate;
1293 : u32 count;
1294 : int i;
1295 :
1296 2012570 : if (vlib_get_n_threads () < 2)
1297 1974020 : return;
1298 :
1299 38556 : ASSERT (vlib_get_thread_index () == 0);
1300 :
1301 38556 : vlib_worker_threads[0].barrier_caller = func_name;
1302 38556 : count = vlib_get_n_threads () - 1;
1303 :
1304 : /* Record entry relative to last close */
1305 38556 : now = vlib_time_now (vm);
1306 38556 : t_entry = now - vm->barrier_epoch;
1307 :
1308 : /* Tolerate recursive calls */
1309 38556 : if (++vlib_worker_threads[0].recursion_level > 1)
1310 : {
1311 19986 : barrier_trace_sync_rec (t_entry);
1312 19986 : return;
1313 : }
1314 :
1315 18570 : if (PREDICT_FALSE (vec_len (vm->barrier_perf_callbacks) != 0))
1316 0 : clib_call_callbacks (vm->barrier_perf_callbacks, vm,
1317 : vm->clib_time.last_cpu_time, 0 /* enter */ );
1318 :
1319 : /*
1320 : * Need data to decide if we're working hard enough to honor
1321 : * the barrier hold-down timer.
1322 : */
1323 18570 : max_vector_rate = 0.0;
1324 75736 : for (i = 1; i < vlib_get_n_threads (); i++)
1325 : {
1326 57166 : vlib_main_t *ovm = vlib_get_main_by_index (i);
1327 57166 : max_vector_rate = clib_max (max_vector_rate,
1328 : (f64) vlib_last_vectors_per_main_loop (ovm));
1329 : }
1330 :
1331 18570 : vlib_worker_threads[0].barrier_sync_count++;
1332 :
1333 : /* Enforce minimum barrier open time to minimize packet loss */
1334 18570 : ASSERT (vm->barrier_no_close_before <= (now + BARRIER_MINIMUM_OPEN_LIMIT));
1335 :
1336 : /*
1337 : * If any worker thread seems busy, which we define
1338 : * as a vector rate above 10, we enforce the barrier hold-down timer
1339 : */
1340 18570 : if (max_vector_rate > 10.0)
1341 : {
1342 : while (1)
1343 : {
1344 639 : now = vlib_time_now (vm);
1345 : /* Barrier hold-down timer expired? */
1346 639 : if (now >= vm->barrier_no_close_before)
1347 88 : break;
1348 551 : if ((vm->barrier_no_close_before - now)
1349 : > (2.0 * BARRIER_MINIMUM_OPEN_LIMIT))
1350 : {
1351 0 : clib_warning
1352 : ("clock change: would have waited for %.4f seconds",
1353 : (vm->barrier_no_close_before - now));
1354 0 : break;
1355 : }
1356 : }
1357 : }
1358 : /* Record time of closure */
1359 18570 : t_open = now - vm->barrier_epoch;
1360 18570 : vm->barrier_epoch = now;
1361 :
1362 18570 : deadline = now + BARRIER_SYNC_TIMEOUT;
1363 :
1364 18570 : *vlib_worker_threads->wait_at_barrier = 1;
1365 7161160 : while (*vlib_worker_threads->workers_at_barrier != count)
1366 : {
1367 7142590 : if ((now = vlib_time_now (vm)) > deadline)
1368 : {
1369 0 : fformat (stderr, "%s: worker thread deadlock\n", __FUNCTION__);
1370 0 : os_panic ();
1371 : }
1372 : }
1373 :
1374 18570 : t_closed = now - vm->barrier_epoch;
1375 :
1376 18570 : barrier_trace_sync (t_entry, t_open, t_closed);
1377 :
1378 : }
1379 :
1380 : void
1381 2012010 : vlib_worker_thread_barrier_release (vlib_main_t * vm)
1382 : {
1383 2012010 : vlib_global_main_t *vgm = vlib_get_global_main ();
1384 : f64 deadline;
1385 : f64 now;
1386 : f64 minimum_open;
1387 : f64 t_entry;
1388 : f64 t_closed_total;
1389 2012010 : f64 t_update_main = 0.0;
1390 2012010 : int refork_needed = 0;
1391 :
1392 2012010 : if (vlib_get_n_threads () < 2)
1393 1973490 : return;
1394 :
1395 38520 : ASSERT (vlib_get_thread_index () == 0);
1396 :
1397 :
1398 38520 : now = vlib_time_now (vm);
1399 38520 : t_entry = now - vm->barrier_epoch;
1400 :
1401 38520 : if (--vlib_worker_threads[0].recursion_level > 0)
1402 : {
1403 19986 : barrier_trace_release_rec (t_entry);
1404 19986 : return;
1405 : }
1406 :
1407 : /* Update (all) node runtimes before releasing the barrier, if needed */
1408 18534 : if (vgm->need_vlib_worker_thread_node_runtime_update)
1409 : {
1410 : /*
1411 : * Lock stat segment here, so we's safe when
1412 : * rebuilding the stat segment node clones from the
1413 : * stat thread...
1414 : */
1415 513 : vlib_stats_segment_lock ();
1416 :
1417 : /* Do stats elements on main thread */
1418 513 : worker_thread_node_runtime_update_internal ();
1419 513 : vgm->need_vlib_worker_thread_node_runtime_update = 0;
1420 :
1421 : /* Do per thread rebuilds in parallel */
1422 513 : refork_needed = 1;
1423 513 : clib_atomic_fetch_add (vlib_worker_threads->node_reforks_required,
1424 : (vlib_get_n_threads () - 1));
1425 513 : now = vlib_time_now (vm);
1426 513 : t_update_main = now - vm->barrier_epoch;
1427 : }
1428 :
1429 18534 : deadline = now + BARRIER_SYNC_TIMEOUT;
1430 :
1431 : /*
1432 : * Note when we let go of the barrier.
1433 : * Workers can use this to derive a reasonably accurate
1434 : * time offset. See vlib_time_now(...)
1435 : */
1436 18534 : vm->time_last_barrier_release = vlib_time_now (vm);
1437 18534 : CLIB_MEMORY_STORE_BARRIER ();
1438 :
1439 18534 : *vlib_worker_threads->wait_at_barrier = 0;
1440 :
1441 283077 : while (*vlib_worker_threads->workers_at_barrier > 0)
1442 : {
1443 264543 : if ((now = vlib_time_now (vm)) > deadline)
1444 : {
1445 0 : fformat (stderr, "%s: worker thread deadlock\n", __FUNCTION__);
1446 0 : os_panic ();
1447 : }
1448 : }
1449 :
1450 : /* Wait for reforks before continuing */
1451 18534 : if (refork_needed)
1452 : {
1453 513 : now = vlib_time_now (vm);
1454 :
1455 513 : deadline = now + BARRIER_SYNC_TIMEOUT;
1456 :
1457 75339100 : while (*vlib_worker_threads->node_reforks_required > 0)
1458 : {
1459 75338600 : if ((now = vlib_time_now (vm)) > deadline)
1460 : {
1461 0 : fformat (stderr, "%s: worker thread refork deadlock\n",
1462 : __FUNCTION__);
1463 0 : os_panic ();
1464 : }
1465 : }
1466 513 : vlib_stats_segment_unlock ();
1467 : }
1468 :
1469 18534 : t_closed_total = now - vm->barrier_epoch;
1470 :
1471 18534 : minimum_open = t_closed_total * BARRIER_MINIMUM_OPEN_FACTOR;
1472 :
1473 18534 : if (minimum_open > BARRIER_MINIMUM_OPEN_LIMIT)
1474 : {
1475 2671 : minimum_open = BARRIER_MINIMUM_OPEN_LIMIT;
1476 : }
1477 :
1478 18534 : vm->barrier_no_close_before = now + minimum_open;
1479 :
1480 : /* Record barrier epoch (used to enforce minimum open time) */
1481 18534 : vm->barrier_epoch = now;
1482 :
1483 18534 : barrier_trace_release (t_entry, t_closed_total, t_update_main);
1484 :
1485 18534 : if (PREDICT_FALSE (vec_len (vm->barrier_perf_callbacks) != 0))
1486 0 : clib_call_callbacks (vm->barrier_perf_callbacks, vm,
1487 : vm->clib_time.last_cpu_time, 1 /* leave */ );
1488 : }
1489 :
1490 : static void
1491 0 : vlib_worker_sync_rpc (void *args)
1492 : {
1493 0 : ASSERT (vlib_thread_is_main_w_barrier ());
1494 0 : vlib_worker_threads->wait_before_barrier = 0;
1495 0 : }
1496 :
1497 : void
1498 0 : vlib_workers_sync (void)
1499 : {
1500 0 : if (PREDICT_FALSE (!vlib_num_workers ()))
1501 0 : return;
1502 :
1503 0 : if (!(*vlib_worker_threads->wait_at_barrier) &&
1504 0 : !clib_atomic_swap_rel_n (&vlib_worker_threads->wait_before_barrier, 1))
1505 : {
1506 0 : u32 thread_index = vlib_get_thread_index ();
1507 0 : vlib_rpc_call_main_thread (vlib_worker_sync_rpc, (u8 *) &thread_index,
1508 : sizeof (thread_index));
1509 : }
1510 :
1511 : /* Wait until main thread asks for barrier */
1512 0 : while (!(*vlib_worker_threads->wait_at_barrier))
1513 : ;
1514 :
1515 : /* Stop before barrier and make sure all threads are either
1516 : * at worker barrier or the barrier before it */
1517 0 : clib_atomic_fetch_add (&vlib_worker_threads->workers_before_barrier, 1);
1518 0 : while (vlib_num_workers () > (*vlib_worker_threads->workers_at_barrier +
1519 0 : vlib_worker_threads->workers_before_barrier))
1520 : ;
1521 : }
1522 :
1523 : void
1524 0 : vlib_workers_continue (void)
1525 : {
1526 0 : if (PREDICT_FALSE (!vlib_num_workers ()))
1527 0 : return;
1528 :
1529 0 : clib_atomic_fetch_add (&vlib_worker_threads->done_work_before_barrier, 1);
1530 :
1531 : /* Wait until all workers are done with work before barrier */
1532 0 : while (vlib_worker_threads->done_work_before_barrier <
1533 0 : vlib_worker_threads->workers_before_barrier)
1534 : ;
1535 :
1536 0 : clib_atomic_fetch_add (&vlib_worker_threads->done_work_before_barrier, -1);
1537 0 : clib_atomic_fetch_add (&vlib_worker_threads->workers_before_barrier, -1);
1538 : }
1539 :
1540 : /**
1541 : * Wait until each of the workers has been once around the track
1542 : */
1543 : void
1544 7385 : vlib_worker_wait_one_loop (void)
1545 : {
1546 7385 : vlib_global_main_t *vgm = vlib_get_global_main ();
1547 7385 : ASSERT (vlib_get_thread_index () == 0);
1548 :
1549 7385 : if (vlib_get_n_threads () < 2)
1550 7265 : return;
1551 :
1552 120 : if (vlib_worker_thread_barrier_held ())
1553 120 : return;
1554 :
1555 0 : u32 *counts = 0;
1556 : u32 ii;
1557 :
1558 0 : vec_validate (counts, vlib_get_n_threads () - 1);
1559 :
1560 : /* record the current loop counts */
1561 0 : vec_foreach_index (ii, vgm->vlib_mains)
1562 0 : counts[ii] = vgm->vlib_mains[ii]->main_loop_count;
1563 :
1564 : /* spin until each changes, apart from the main thread, or we'd be
1565 : * a while */
1566 0 : for (ii = 1; ii < vec_len (counts); ii++)
1567 : {
1568 0 : while (counts[ii] == vgm->vlib_mains[ii]->main_loop_count)
1569 0 : CLIB_PAUSE ();
1570 : }
1571 :
1572 0 : vec_free (counts);
1573 0 : return;
1574 : }
1575 :
1576 : void
1577 54 : vlib_worker_thread_fn (void *arg)
1578 : {
1579 54 : vlib_global_main_t *vgm = vlib_get_global_main ();
1580 54 : vlib_worker_thread_t *w = (vlib_worker_thread_t *) arg;
1581 54 : vlib_main_t *vm = vlib_get_main ();
1582 : clib_error_t *e;
1583 :
1584 54 : ASSERT (vm->thread_index == vlib_get_thread_index ());
1585 :
1586 54 : vlib_worker_thread_init (w);
1587 51 : clib_time_init (&vm->clib_time);
1588 50 : clib_mem_set_heap (w->thread_mheap);
1589 :
1590 50 : vm->worker_init_functions_called = hash_create (0, 0);
1591 :
1592 53 : e = vlib_call_init_exit_functions_no_sort (
1593 : vm, &vgm->worker_init_function_registrations, 1 /* call_once */,
1594 : 0 /* is_global */);
1595 54 : if (e)
1596 0 : clib_error_report (e);
1597 :
1598 54 : vlib_worker_loop (vm);
1599 0 : }
1600 :
1601 : /* *INDENT-OFF* */
1602 1119 : VLIB_REGISTER_THREAD (worker_thread_reg, static) = {
1603 : .name = "workers",
1604 : .short_name = "wk",
1605 : .function = vlib_worker_thread_fn,
1606 : };
1607 : /* *INDENT-ON* */
1608 :
1609 : extern clib_march_fn_registration
1610 : *vlib_frame_queue_dequeue_with_aux_fn_march_fn_registrations;
1611 : extern clib_march_fn_registration
1612 : *vlib_frame_queue_dequeue_fn_march_fn_registrations;
1613 : u32
1614 21248 : vlib_frame_queue_main_init (u32 node_index, u32 frame_queue_nelts)
1615 : {
1616 21248 : vlib_thread_main_t *tm = vlib_get_thread_main ();
1617 21248 : vlib_main_t *vm = vlib_get_main ();
1618 : vlib_frame_queue_main_t *fqm;
1619 : vlib_frame_queue_t *fq;
1620 : vlib_node_t *node;
1621 : int i;
1622 : u32 num_threads;
1623 :
1624 21248 : if (frame_queue_nelts == 0)
1625 21242 : frame_queue_nelts = FRAME_QUEUE_MAX_NELTS;
1626 :
1627 21248 : num_threads = 1 /* main thread */ + tm->n_threads;
1628 21248 : ASSERT (frame_queue_nelts >= 8 + num_threads);
1629 :
1630 21248 : vec_add2 (tm->frame_queue_mains, fqm, 1);
1631 :
1632 21248 : node = vlib_get_node (vm, fqm->node_index);
1633 21248 : ASSERT (node);
1634 21248 : if (node->aux_offset)
1635 : {
1636 0 : fqm->frame_queue_dequeue_fn =
1637 0 : CLIB_MARCH_FN_VOID_POINTER (vlib_frame_queue_dequeue_with_aux_fn);
1638 : }
1639 : else
1640 : {
1641 21248 : fqm->frame_queue_dequeue_fn =
1642 21248 : CLIB_MARCH_FN_VOID_POINTER (vlib_frame_queue_dequeue_fn);
1643 : }
1644 :
1645 21248 : fqm->node_index = node_index;
1646 21248 : fqm->frame_queue_nelts = frame_queue_nelts;
1647 :
1648 21248 : vec_validate (fqm->vlib_frame_queues, tm->n_vlib_mains - 1);
1649 21248 : vec_set_len (fqm->vlib_frame_queues, 0);
1650 44566 : for (i = 0; i < tm->n_vlib_mains; i++)
1651 : {
1652 23318 : fq = vlib_frame_queue_alloc (frame_queue_nelts);
1653 23318 : vec_add1 (fqm->vlib_frame_queues, fq);
1654 : }
1655 :
1656 21248 : return (fqm - tm->frame_queue_mains);
1657 : }
1658 :
1659 : void
1660 0 : vlib_process_signal_event_mt_helper (vlib_process_signal_event_mt_args_t *
1661 : args)
1662 : {
1663 0 : ASSERT (vlib_get_thread_index () == 0);
1664 0 : vlib_process_signal_event (vlib_get_main (), args->node_index,
1665 : args->type_opaque, args->data);
1666 0 : }
1667 :
1668 : void *rpc_call_main_thread_cb_fn;
1669 :
1670 : void
1671 22 : vlib_rpc_call_main_thread (void *callback, u8 * args, u32 arg_size)
1672 : {
1673 22 : if (rpc_call_main_thread_cb_fn)
1674 : {
1675 22 : void (*fp) (void *, u8 *, u32) = rpc_call_main_thread_cb_fn;
1676 22 : (*fp) (callback, args, arg_size);
1677 : }
1678 : else
1679 0 : clib_warning ("BUG: rpc_call_main_thread_cb_fn NULL!");
1680 22 : }
1681 :
1682 : clib_error_t *
1683 559 : threads_init (vlib_main_t * vm)
1684 : {
1685 559 : const vlib_thread_main_t *tm = vlib_get_thread_main ();
1686 :
1687 559 : if (tm->main_lcore == ~0 && tm->n_vlib_mains > 1)
1688 0 : return clib_error_return (0, "Configuration error, a main core must "
1689 : "be specified when using worker threads");
1690 :
1691 559 : return 0;
1692 : }
1693 :
1694 4479 : VLIB_INIT_FUNCTION (threads_init);
1695 :
1696 : static clib_error_t *
1697 39 : show_clock_command_fn (vlib_main_t * vm,
1698 : unformat_input_t * input, vlib_cli_command_t * cmd)
1699 : {
1700 39 : int verbose = 0;
1701 39 : clib_timebase_t _tb, *tb = &_tb;
1702 :
1703 39 : (void) unformat (input, "verbose %=", &verbose, 1);
1704 :
1705 39 : clib_timebase_init (tb, 0 /* GMT */ , CLIB_TIMEBASE_DAYLIGHT_NONE,
1706 : &vm->clib_time);
1707 :
1708 39 : vlib_cli_output (vm, "%U, %U GMT", format_clib_time, &vm->clib_time,
1709 : verbose, format_clib_timebase_time,
1710 : clib_timebase_now (tb));
1711 :
1712 39 : vlib_cli_output (vm, "Time last barrier release %.9f",
1713 : vm->time_last_barrier_release);
1714 :
1715 78 : foreach_vlib_main ()
1716 : {
1717 39 : vlib_cli_output (vm, "%d: %U", this_vlib_main->thread_index,
1718 39 : format_clib_time, &this_vlib_main->clib_time, verbose);
1719 :
1720 39 : vlib_cli_output (vm, "Thread %d offset %.9f error %.9f",
1721 39 : this_vlib_main->thread_index,
1722 39 : this_vlib_main->time_offset,
1723 39 : vm->time_last_barrier_release -
1724 39 : this_vlib_main->time_last_barrier_release);
1725 : }
1726 39 : return 0;
1727 : }
1728 :
1729 : /* *INDENT-OFF* */
1730 272887 : VLIB_CLI_COMMAND (f_command, static) =
1731 : {
1732 : .path = "show clock",
1733 : .short_help = "show clock",
1734 : .function = show_clock_command_fn,
1735 : };
1736 : /* *INDENT-ON* */
1737 :
1738 : vlib_thread_main_t *
1739 0 : vlib_get_thread_main_not_inline (void)
1740 : {
1741 0 : return vlib_get_thread_main ();
1742 : }
1743 :
1744 : /*
1745 : * fd.io coding-style-patch-verification: ON
1746 : *
1747 : * Local Variables:
1748 : * eval: (c-set-style "gnu")
1749 : * End:
1750 : */
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