1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * builtin-kwork.c |
4 | * |
5 | * Copyright (c) 2022 Huawei Inc, Yang Jihong <yangjihong1@huawei.com> |
6 | */ |
7 | |
8 | #include "builtin.h" |
9 | |
10 | #include "util/data.h" |
11 | #include "util/evlist.h" |
12 | #include "util/evsel.h" |
13 | #include "util/header.h" |
14 | #include "util/kwork.h" |
15 | #include "util/debug.h" |
16 | #include "util/session.h" |
17 | #include "util/symbol.h" |
18 | #include "util/thread.h" |
19 | #include "util/string2.h" |
20 | #include "util/callchain.h" |
21 | #include "util/evsel_fprintf.h" |
22 | #include "util/util.h" |
23 | |
24 | #include <subcmd/pager.h> |
25 | #include <subcmd/parse-options.h> |
26 | #include <traceevent/event-parse.h> |
27 | |
28 | #include <errno.h> |
29 | #include <inttypes.h> |
30 | #include <signal.h> |
31 | #include <linux/err.h> |
32 | #include <linux/time64.h> |
33 | #include <linux/zalloc.h> |
34 | |
35 | /* |
36 | * report header elements width |
37 | */ |
38 | #define PRINT_CPU_WIDTH 4 |
39 | #define PRINT_COUNT_WIDTH 9 |
40 | #define PRINT_RUNTIME_WIDTH 10 |
41 | #define PRINT_LATENCY_WIDTH 10 |
42 | #define PRINT_TIMESTAMP_WIDTH 17 |
43 | #define PRINT_KWORK_NAME_WIDTH 30 |
44 | #define RPINT_DECIMAL_WIDTH 3 |
45 | #define PRINT_BRACKETPAIR_WIDTH 2 |
46 | #define PRINT_TIME_UNIT_SEC_WIDTH 2 |
47 | #define PRINT_TIME_UNIT_MESC_WIDTH 3 |
48 | #define PRINT_PID_WIDTH 7 |
49 | #define PRINT_TASK_NAME_WIDTH 16 |
50 | #define PRINT_CPU_USAGE_WIDTH 6 |
51 | #define PRINT_CPU_USAGE_DECIMAL_WIDTH 2 |
52 | #define PRINT_CPU_USAGE_HIST_WIDTH 30 |
53 | #define (PRINT_RUNTIME_WIDTH + PRINT_TIME_UNIT_MESC_WIDTH) |
54 | #define (PRINT_LATENCY_WIDTH + PRINT_TIME_UNIT_MESC_WIDTH) |
55 | #define PRINT_TIMEHIST_CPU_WIDTH (PRINT_CPU_WIDTH + PRINT_BRACKETPAIR_WIDTH) |
56 | #define (PRINT_TIMESTAMP_WIDTH + PRINT_TIME_UNIT_SEC_WIDTH) |
57 | |
58 | struct sort_dimension { |
59 | const char *name; |
60 | int (*cmp)(struct kwork_work *l, struct kwork_work *r); |
61 | struct list_head list; |
62 | }; |
63 | |
64 | static int id_cmp(struct kwork_work *l, struct kwork_work *r) |
65 | { |
66 | if (l->cpu > r->cpu) |
67 | return 1; |
68 | if (l->cpu < r->cpu) |
69 | return -1; |
70 | |
71 | if (l->id > r->id) |
72 | return 1; |
73 | if (l->id < r->id) |
74 | return -1; |
75 | |
76 | return 0; |
77 | } |
78 | |
79 | static int count_cmp(struct kwork_work *l, struct kwork_work *r) |
80 | { |
81 | if (l->nr_atoms > r->nr_atoms) |
82 | return 1; |
83 | if (l->nr_atoms < r->nr_atoms) |
84 | return -1; |
85 | |
86 | return 0; |
87 | } |
88 | |
89 | static int runtime_cmp(struct kwork_work *l, struct kwork_work *r) |
90 | { |
91 | if (l->total_runtime > r->total_runtime) |
92 | return 1; |
93 | if (l->total_runtime < r->total_runtime) |
94 | return -1; |
95 | |
96 | return 0; |
97 | } |
98 | |
99 | static int max_runtime_cmp(struct kwork_work *l, struct kwork_work *r) |
100 | { |
101 | if (l->max_runtime > r->max_runtime) |
102 | return 1; |
103 | if (l->max_runtime < r->max_runtime) |
104 | return -1; |
105 | |
106 | return 0; |
107 | } |
108 | |
109 | static int avg_latency_cmp(struct kwork_work *l, struct kwork_work *r) |
110 | { |
111 | u64 avgl, avgr; |
112 | |
113 | if (!r->nr_atoms) |
114 | return 1; |
115 | if (!l->nr_atoms) |
116 | return -1; |
117 | |
118 | avgl = l->total_latency / l->nr_atoms; |
119 | avgr = r->total_latency / r->nr_atoms; |
120 | |
121 | if (avgl > avgr) |
122 | return 1; |
123 | if (avgl < avgr) |
124 | return -1; |
125 | |
126 | return 0; |
127 | } |
128 | |
129 | static int max_latency_cmp(struct kwork_work *l, struct kwork_work *r) |
130 | { |
131 | if (l->max_latency > r->max_latency) |
132 | return 1; |
133 | if (l->max_latency < r->max_latency) |
134 | return -1; |
135 | |
136 | return 0; |
137 | } |
138 | |
139 | static int cpu_usage_cmp(struct kwork_work *l, struct kwork_work *r) |
140 | { |
141 | if (l->cpu_usage > r->cpu_usage) |
142 | return 1; |
143 | if (l->cpu_usage < r->cpu_usage) |
144 | return -1; |
145 | |
146 | return 0; |
147 | } |
148 | |
149 | static int id_or_cpu_r_cmp(struct kwork_work *l, struct kwork_work *r) |
150 | { |
151 | if (l->id < r->id) |
152 | return 1; |
153 | if (l->id > r->id) |
154 | return -1; |
155 | |
156 | if (l->id != 0) |
157 | return 0; |
158 | |
159 | if (l->cpu < r->cpu) |
160 | return 1; |
161 | if (l->cpu > r->cpu) |
162 | return -1; |
163 | |
164 | return 0; |
165 | } |
166 | |
167 | static int sort_dimension__add(struct perf_kwork *kwork __maybe_unused, |
168 | const char *tok, struct list_head *list) |
169 | { |
170 | size_t i; |
171 | static struct sort_dimension max_sort_dimension = { |
172 | .name = "max" , |
173 | .cmp = max_runtime_cmp, |
174 | }; |
175 | static struct sort_dimension id_sort_dimension = { |
176 | .name = "id" , |
177 | .cmp = id_cmp, |
178 | }; |
179 | static struct sort_dimension runtime_sort_dimension = { |
180 | .name = "runtime" , |
181 | .cmp = runtime_cmp, |
182 | }; |
183 | static struct sort_dimension count_sort_dimension = { |
184 | .name = "count" , |
185 | .cmp = count_cmp, |
186 | }; |
187 | static struct sort_dimension avg_sort_dimension = { |
188 | .name = "avg" , |
189 | .cmp = avg_latency_cmp, |
190 | }; |
191 | static struct sort_dimension rate_sort_dimension = { |
192 | .name = "rate" , |
193 | .cmp = cpu_usage_cmp, |
194 | }; |
195 | static struct sort_dimension tid_sort_dimension = { |
196 | .name = "tid" , |
197 | .cmp = id_or_cpu_r_cmp, |
198 | }; |
199 | struct sort_dimension *available_sorts[] = { |
200 | &id_sort_dimension, |
201 | &max_sort_dimension, |
202 | &count_sort_dimension, |
203 | &runtime_sort_dimension, |
204 | &avg_sort_dimension, |
205 | &rate_sort_dimension, |
206 | &tid_sort_dimension, |
207 | }; |
208 | |
209 | if (kwork->report == KWORK_REPORT_LATENCY) |
210 | max_sort_dimension.cmp = max_latency_cmp; |
211 | |
212 | for (i = 0; i < ARRAY_SIZE(available_sorts); i++) { |
213 | if (!strcmp(available_sorts[i]->name, tok)) { |
214 | list_add_tail(new: &available_sorts[i]->list, head: list); |
215 | return 0; |
216 | } |
217 | } |
218 | |
219 | return -1; |
220 | } |
221 | |
222 | static void setup_sorting(struct perf_kwork *kwork, |
223 | const struct option *options, |
224 | const char * const usage_msg[]) |
225 | { |
226 | char *tmp, *tok, *str = strdup(kwork->sort_order); |
227 | |
228 | for (tok = strtok_r(str, ", " , &tmp); |
229 | tok; tok = strtok_r(NULL, ", " , &tmp)) { |
230 | if (sort_dimension__add(kwork, tok, list: &kwork->sort_list) < 0) |
231 | usage_with_options_msg(usage_msg, options, |
232 | "Unknown --sort key: `%s'" , tok); |
233 | } |
234 | |
235 | pr_debug("Sort order: %s\n" , kwork->sort_order); |
236 | free(str); |
237 | } |
238 | |
239 | static struct kwork_atom *atom_new(struct perf_kwork *kwork, |
240 | struct perf_sample *sample) |
241 | { |
242 | unsigned long i; |
243 | struct kwork_atom_page *page; |
244 | struct kwork_atom *atom = NULL; |
245 | |
246 | list_for_each_entry(page, &kwork->atom_page_list, list) { |
247 | if (!bitmap_full(src: page->bitmap, NR_ATOM_PER_PAGE)) { |
248 | i = find_first_zero_bit(addr: page->bitmap, NR_ATOM_PER_PAGE); |
249 | BUG_ON(i >= NR_ATOM_PER_PAGE); |
250 | atom = &page->atoms[i]; |
251 | goto found_atom; |
252 | } |
253 | } |
254 | |
255 | /* |
256 | * new page |
257 | */ |
258 | page = zalloc(sizeof(*page)); |
259 | if (page == NULL) { |
260 | pr_err("Failed to zalloc kwork atom page\n" ); |
261 | return NULL; |
262 | } |
263 | |
264 | i = 0; |
265 | atom = &page->atoms[0]; |
266 | list_add_tail(new: &page->list, head: &kwork->atom_page_list); |
267 | |
268 | found_atom: |
269 | __set_bit(i, page->bitmap); |
270 | atom->time = sample->time; |
271 | atom->prev = NULL; |
272 | atom->page_addr = page; |
273 | atom->bit_inpage = i; |
274 | return atom; |
275 | } |
276 | |
277 | static void atom_free(struct kwork_atom *atom) |
278 | { |
279 | if (atom->prev != NULL) |
280 | atom_free(atom: atom->prev); |
281 | |
282 | __clear_bit(atom->bit_inpage, |
283 | ((struct kwork_atom_page *)atom->page_addr)->bitmap); |
284 | } |
285 | |
286 | static void atom_del(struct kwork_atom *atom) |
287 | { |
288 | list_del(entry: &atom->list); |
289 | atom_free(atom); |
290 | } |
291 | |
292 | static int work_cmp(struct list_head *list, |
293 | struct kwork_work *l, struct kwork_work *r) |
294 | { |
295 | int ret = 0; |
296 | struct sort_dimension *sort; |
297 | |
298 | BUG_ON(list_empty(list)); |
299 | |
300 | list_for_each_entry(sort, list, list) { |
301 | ret = sort->cmp(l, r); |
302 | if (ret) |
303 | return ret; |
304 | } |
305 | |
306 | return ret; |
307 | } |
308 | |
309 | static struct kwork_work *work_search(struct rb_root_cached *root, |
310 | struct kwork_work *key, |
311 | struct list_head *sort_list) |
312 | { |
313 | int cmp; |
314 | struct kwork_work *work; |
315 | struct rb_node *node = root->rb_root.rb_node; |
316 | |
317 | while (node) { |
318 | work = container_of(node, struct kwork_work, node); |
319 | cmp = work_cmp(list: sort_list, l: key, r: work); |
320 | if (cmp > 0) |
321 | node = node->rb_left; |
322 | else if (cmp < 0) |
323 | node = node->rb_right; |
324 | else { |
325 | if (work->name == NULL) |
326 | work->name = key->name; |
327 | return work; |
328 | } |
329 | } |
330 | return NULL; |
331 | } |
332 | |
333 | static void work_insert(struct rb_root_cached *root, |
334 | struct kwork_work *key, struct list_head *sort_list) |
335 | { |
336 | int cmp; |
337 | bool leftmost = true; |
338 | struct kwork_work *cur; |
339 | struct rb_node **new = &(root->rb_root.rb_node), *parent = NULL; |
340 | |
341 | while (*new) { |
342 | cur = container_of(*new, struct kwork_work, node); |
343 | parent = *new; |
344 | cmp = work_cmp(list: sort_list, l: key, r: cur); |
345 | |
346 | if (cmp > 0) |
347 | new = &((*new)->rb_left); |
348 | else { |
349 | new = &((*new)->rb_right); |
350 | leftmost = false; |
351 | } |
352 | } |
353 | |
354 | rb_link_node(node: &key->node, parent, rb_link: new); |
355 | rb_insert_color_cached(node: &key->node, root, leftmost); |
356 | } |
357 | |
358 | static struct kwork_work *work_new(struct kwork_work *key) |
359 | { |
360 | int i; |
361 | struct kwork_work *work = zalloc(sizeof(*work)); |
362 | |
363 | if (work == NULL) { |
364 | pr_err("Failed to zalloc kwork work\n" ); |
365 | return NULL; |
366 | } |
367 | |
368 | for (i = 0; i < KWORK_TRACE_MAX; i++) |
369 | INIT_LIST_HEAD(list: &work->atom_list[i]); |
370 | |
371 | work->id = key->id; |
372 | work->cpu = key->cpu; |
373 | work->name = key->name; |
374 | work->class = key->class; |
375 | return work; |
376 | } |
377 | |
378 | static struct kwork_work *work_findnew(struct rb_root_cached *root, |
379 | struct kwork_work *key, |
380 | struct list_head *sort_list) |
381 | { |
382 | struct kwork_work *work = work_search(root, key, sort_list); |
383 | |
384 | if (work != NULL) |
385 | return work; |
386 | |
387 | work = work_new(key); |
388 | if (work) |
389 | work_insert(root, key: work, sort_list); |
390 | |
391 | return work; |
392 | } |
393 | |
394 | static void profile_update_timespan(struct perf_kwork *kwork, |
395 | struct perf_sample *sample) |
396 | { |
397 | if (!kwork->summary) |
398 | return; |
399 | |
400 | if ((kwork->timestart == 0) || (kwork->timestart > sample->time)) |
401 | kwork->timestart = sample->time; |
402 | |
403 | if (kwork->timeend < sample->time) |
404 | kwork->timeend = sample->time; |
405 | } |
406 | |
407 | static bool profile_name_match(struct perf_kwork *kwork, |
408 | struct kwork_work *work) |
409 | { |
410 | if (kwork->profile_name && work->name && |
411 | (strcmp(work->name, kwork->profile_name) != 0)) { |
412 | return false; |
413 | } |
414 | |
415 | return true; |
416 | } |
417 | |
418 | static bool profile_event_match(struct perf_kwork *kwork, |
419 | struct kwork_work *work, |
420 | struct perf_sample *sample) |
421 | { |
422 | int cpu = work->cpu; |
423 | u64 time = sample->time; |
424 | struct perf_time_interval *ptime = &kwork->ptime; |
425 | |
426 | if ((kwork->cpu_list != NULL) && !test_bit(cpu, kwork->cpu_bitmap)) |
427 | return false; |
428 | |
429 | if (((ptime->start != 0) && (ptime->start > time)) || |
430 | ((ptime->end != 0) && (ptime->end < time))) |
431 | return false; |
432 | |
433 | /* |
434 | * report top needs to collect the runtime of all tasks to |
435 | * calculate the load of each core. |
436 | */ |
437 | if ((kwork->report != KWORK_REPORT_TOP) && |
438 | !profile_name_match(kwork, work)) { |
439 | return false; |
440 | } |
441 | |
442 | profile_update_timespan(kwork, sample); |
443 | return true; |
444 | } |
445 | |
446 | static int work_push_atom(struct perf_kwork *kwork, |
447 | struct kwork_class *class, |
448 | enum kwork_trace_type src_type, |
449 | enum kwork_trace_type dst_type, |
450 | struct evsel *evsel, |
451 | struct perf_sample *sample, |
452 | struct machine *machine, |
453 | struct kwork_work **ret_work, |
454 | bool overwrite) |
455 | { |
456 | struct kwork_atom *atom, *dst_atom, *last_atom; |
457 | struct kwork_work *work, key; |
458 | |
459 | BUG_ON(class->work_init == NULL); |
460 | class->work_init(kwork, class, &key, src_type, evsel, sample, machine); |
461 | |
462 | atom = atom_new(kwork, sample); |
463 | if (atom == NULL) |
464 | return -1; |
465 | |
466 | work = work_findnew(root: &class->work_root, key: &key, sort_list: &kwork->cmp_id); |
467 | if (work == NULL) { |
468 | atom_free(atom); |
469 | return -1; |
470 | } |
471 | |
472 | if (!profile_event_match(kwork, work, sample)) { |
473 | atom_free(atom); |
474 | return 0; |
475 | } |
476 | |
477 | if (dst_type < KWORK_TRACE_MAX) { |
478 | dst_atom = list_last_entry_or_null(&work->atom_list[dst_type], |
479 | struct kwork_atom, list); |
480 | if (dst_atom != NULL) { |
481 | atom->prev = dst_atom; |
482 | list_del(entry: &dst_atom->list); |
483 | } |
484 | } |
485 | |
486 | if (ret_work != NULL) |
487 | *ret_work = work; |
488 | |
489 | if (overwrite) { |
490 | last_atom = list_last_entry_or_null(&work->atom_list[src_type], |
491 | struct kwork_atom, list); |
492 | if (last_atom) { |
493 | atom_del(atom: last_atom); |
494 | |
495 | kwork->nr_skipped_events[src_type]++; |
496 | kwork->nr_skipped_events[KWORK_TRACE_MAX]++; |
497 | } |
498 | } |
499 | |
500 | list_add_tail(new: &atom->list, head: &work->atom_list[src_type]); |
501 | |
502 | return 0; |
503 | } |
504 | |
505 | static struct kwork_atom *work_pop_atom(struct perf_kwork *kwork, |
506 | struct kwork_class *class, |
507 | enum kwork_trace_type src_type, |
508 | enum kwork_trace_type dst_type, |
509 | struct evsel *evsel, |
510 | struct perf_sample *sample, |
511 | struct machine *machine, |
512 | struct kwork_work **ret_work) |
513 | { |
514 | struct kwork_atom *atom, *src_atom; |
515 | struct kwork_work *work, key; |
516 | |
517 | BUG_ON(class->work_init == NULL); |
518 | class->work_init(kwork, class, &key, src_type, evsel, sample, machine); |
519 | |
520 | work = work_findnew(root: &class->work_root, key: &key, sort_list: &kwork->cmp_id); |
521 | if (ret_work != NULL) |
522 | *ret_work = work; |
523 | |
524 | if (work == NULL) |
525 | return NULL; |
526 | |
527 | if (!profile_event_match(kwork, work, sample)) |
528 | return NULL; |
529 | |
530 | atom = list_last_entry_or_null(&work->atom_list[dst_type], |
531 | struct kwork_atom, list); |
532 | if (atom != NULL) |
533 | return atom; |
534 | |
535 | src_atom = atom_new(kwork, sample); |
536 | if (src_atom != NULL) |
537 | list_add_tail(new: &src_atom->list, head: &work->atom_list[src_type]); |
538 | else { |
539 | if (ret_work != NULL) |
540 | *ret_work = NULL; |
541 | } |
542 | |
543 | return NULL; |
544 | } |
545 | |
546 | static struct kwork_work *find_work_by_id(struct rb_root_cached *root, |
547 | u64 id, int cpu) |
548 | { |
549 | struct rb_node *next; |
550 | struct kwork_work *work; |
551 | |
552 | next = rb_first_cached(root); |
553 | while (next) { |
554 | work = rb_entry(next, struct kwork_work, node); |
555 | if ((cpu != -1 && work->id == id && work->cpu == cpu) || |
556 | (cpu == -1 && work->id == id)) |
557 | return work; |
558 | |
559 | next = rb_next(next); |
560 | } |
561 | |
562 | return NULL; |
563 | } |
564 | |
565 | static struct kwork_class *get_kwork_class(struct perf_kwork *kwork, |
566 | enum kwork_class_type type) |
567 | { |
568 | struct kwork_class *class; |
569 | |
570 | list_for_each_entry(class, &kwork->class_list, list) { |
571 | if (class->type == type) |
572 | return class; |
573 | } |
574 | |
575 | return NULL; |
576 | } |
577 | |
578 | static void report_update_exit_event(struct kwork_work *work, |
579 | struct kwork_atom *atom, |
580 | struct perf_sample *sample) |
581 | { |
582 | u64 delta; |
583 | u64 exit_time = sample->time; |
584 | u64 entry_time = atom->time; |
585 | |
586 | if ((entry_time != 0) && (exit_time >= entry_time)) { |
587 | delta = exit_time - entry_time; |
588 | if ((delta > work->max_runtime) || |
589 | (work->max_runtime == 0)) { |
590 | work->max_runtime = delta; |
591 | work->max_runtime_start = entry_time; |
592 | work->max_runtime_end = exit_time; |
593 | } |
594 | work->total_runtime += delta; |
595 | work->nr_atoms++; |
596 | } |
597 | } |
598 | |
599 | static int report_entry_event(struct perf_kwork *kwork, |
600 | struct kwork_class *class, |
601 | struct evsel *evsel, |
602 | struct perf_sample *sample, |
603 | struct machine *machine) |
604 | { |
605 | return work_push_atom(kwork, class, src_type: KWORK_TRACE_ENTRY, |
606 | dst_type: KWORK_TRACE_MAX, evsel, sample, |
607 | machine, NULL, overwrite: true); |
608 | } |
609 | |
610 | static int report_exit_event(struct perf_kwork *kwork, |
611 | struct kwork_class *class, |
612 | struct evsel *evsel, |
613 | struct perf_sample *sample, |
614 | struct machine *machine) |
615 | { |
616 | struct kwork_atom *atom = NULL; |
617 | struct kwork_work *work = NULL; |
618 | |
619 | atom = work_pop_atom(kwork, class, src_type: KWORK_TRACE_EXIT, |
620 | dst_type: KWORK_TRACE_ENTRY, evsel, sample, |
621 | machine, ret_work: &work); |
622 | if (work == NULL) |
623 | return -1; |
624 | |
625 | if (atom != NULL) { |
626 | report_update_exit_event(work, atom, sample); |
627 | atom_del(atom); |
628 | } |
629 | |
630 | return 0; |
631 | } |
632 | |
633 | static void latency_update_entry_event(struct kwork_work *work, |
634 | struct kwork_atom *atom, |
635 | struct perf_sample *sample) |
636 | { |
637 | u64 delta; |
638 | u64 entry_time = sample->time; |
639 | u64 raise_time = atom->time; |
640 | |
641 | if ((raise_time != 0) && (entry_time >= raise_time)) { |
642 | delta = entry_time - raise_time; |
643 | if ((delta > work->max_latency) || |
644 | (work->max_latency == 0)) { |
645 | work->max_latency = delta; |
646 | work->max_latency_start = raise_time; |
647 | work->max_latency_end = entry_time; |
648 | } |
649 | work->total_latency += delta; |
650 | work->nr_atoms++; |
651 | } |
652 | } |
653 | |
654 | static int latency_raise_event(struct perf_kwork *kwork, |
655 | struct kwork_class *class, |
656 | struct evsel *evsel, |
657 | struct perf_sample *sample, |
658 | struct machine *machine) |
659 | { |
660 | return work_push_atom(kwork, class, src_type: KWORK_TRACE_RAISE, |
661 | dst_type: KWORK_TRACE_MAX, evsel, sample, |
662 | machine, NULL, overwrite: true); |
663 | } |
664 | |
665 | static int latency_entry_event(struct perf_kwork *kwork, |
666 | struct kwork_class *class, |
667 | struct evsel *evsel, |
668 | struct perf_sample *sample, |
669 | struct machine *machine) |
670 | { |
671 | struct kwork_atom *atom = NULL; |
672 | struct kwork_work *work = NULL; |
673 | |
674 | atom = work_pop_atom(kwork, class, src_type: KWORK_TRACE_ENTRY, |
675 | dst_type: KWORK_TRACE_RAISE, evsel, sample, |
676 | machine, ret_work: &work); |
677 | if (work == NULL) |
678 | return -1; |
679 | |
680 | if (atom != NULL) { |
681 | latency_update_entry_event(work, atom, sample); |
682 | atom_del(atom); |
683 | } |
684 | |
685 | return 0; |
686 | } |
687 | |
688 | static void timehist_save_callchain(struct perf_kwork *kwork, |
689 | struct perf_sample *sample, |
690 | struct evsel *evsel, |
691 | struct machine *machine) |
692 | { |
693 | struct symbol *sym; |
694 | struct thread *thread; |
695 | struct callchain_cursor_node *node; |
696 | struct callchain_cursor *cursor; |
697 | |
698 | if (!kwork->show_callchain || sample->callchain == NULL) |
699 | return; |
700 | |
701 | /* want main thread for process - has maps */ |
702 | thread = machine__findnew_thread(machine, pid: sample->pid, tid: sample->pid); |
703 | if (thread == NULL) { |
704 | pr_debug("Failed to get thread for pid %d\n" , sample->pid); |
705 | return; |
706 | } |
707 | |
708 | cursor = get_tls_callchain_cursor(); |
709 | |
710 | if (thread__resolve_callchain(thread, cursor, evsel, sample, |
711 | NULL, NULL, max_stack: kwork->max_stack + 2) != 0) { |
712 | pr_debug("Failed to resolve callchain, skipping\n" ); |
713 | goto out_put; |
714 | } |
715 | |
716 | callchain_cursor_commit(cursor); |
717 | |
718 | while (true) { |
719 | node = callchain_cursor_current(cursor); |
720 | if (node == NULL) |
721 | break; |
722 | |
723 | sym = node->ms.sym; |
724 | if (sym) { |
725 | if (!strcmp(sym->name, "__softirqentry_text_start" ) || |
726 | !strcmp(sym->name, "__do_softirq" )) |
727 | sym->ignore = 1; |
728 | } |
729 | |
730 | callchain_cursor_advance(cursor); |
731 | } |
732 | |
733 | out_put: |
734 | thread__put(thread); |
735 | } |
736 | |
737 | static void timehist_print_event(struct perf_kwork *kwork, |
738 | struct kwork_work *work, |
739 | struct kwork_atom *atom, |
740 | struct perf_sample *sample, |
741 | struct addr_location *al) |
742 | { |
743 | char entrytime[32], exittime[32]; |
744 | char kwork_name[PRINT_KWORK_NAME_WIDTH]; |
745 | |
746 | /* |
747 | * runtime start |
748 | */ |
749 | timestamp__scnprintf_usec(atom->time, |
750 | entrytime, sizeof(entrytime)); |
751 | printf(" %*s " , PRINT_TIMESTAMP_WIDTH, entrytime); |
752 | |
753 | /* |
754 | * runtime end |
755 | */ |
756 | timestamp__scnprintf_usec(sample->time, |
757 | exittime, sizeof(exittime)); |
758 | printf(" %*s " , PRINT_TIMESTAMP_WIDTH, exittime); |
759 | |
760 | /* |
761 | * cpu |
762 | */ |
763 | printf(" [%0*d] " , PRINT_CPU_WIDTH, work->cpu); |
764 | |
765 | /* |
766 | * kwork name |
767 | */ |
768 | if (work->class && work->class->work_name) { |
769 | work->class->work_name(work, kwork_name, |
770 | PRINT_KWORK_NAME_WIDTH); |
771 | printf(" %-*s " , PRINT_KWORK_NAME_WIDTH, kwork_name); |
772 | } else |
773 | printf(" %-*s " , PRINT_KWORK_NAME_WIDTH, "" ); |
774 | |
775 | /* |
776 | *runtime |
777 | */ |
778 | printf(" %*.*f " , |
779 | PRINT_RUNTIME_WIDTH, RPINT_DECIMAL_WIDTH, |
780 | (double)(sample->time - atom->time) / NSEC_PER_MSEC); |
781 | |
782 | /* |
783 | * delaytime |
784 | */ |
785 | if (atom->prev != NULL) |
786 | printf(" %*.*f " , PRINT_LATENCY_WIDTH, RPINT_DECIMAL_WIDTH, |
787 | (double)(atom->time - atom->prev->time) / NSEC_PER_MSEC); |
788 | else |
789 | printf(" %*s " , PRINT_LATENCY_WIDTH, " " ); |
790 | |
791 | /* |
792 | * callchain |
793 | */ |
794 | if (kwork->show_callchain) { |
795 | struct callchain_cursor *cursor = get_tls_callchain_cursor(); |
796 | |
797 | if (cursor == NULL) |
798 | return; |
799 | |
800 | printf(" " ); |
801 | |
802 | sample__fprintf_sym(sample, al, 0, |
803 | EVSEL__PRINT_SYM | EVSEL__PRINT_ONELINE | |
804 | EVSEL__PRINT_CALLCHAIN_ARROW | |
805 | EVSEL__PRINT_SKIP_IGNORED, |
806 | cursor, symbol_conf.bt_stop_list, |
807 | stdout); |
808 | } |
809 | |
810 | printf("\n" ); |
811 | } |
812 | |
813 | static int timehist_raise_event(struct perf_kwork *kwork, |
814 | struct kwork_class *class, |
815 | struct evsel *evsel, |
816 | struct perf_sample *sample, |
817 | struct machine *machine) |
818 | { |
819 | return work_push_atom(kwork, class, src_type: KWORK_TRACE_RAISE, |
820 | dst_type: KWORK_TRACE_MAX, evsel, sample, |
821 | machine, NULL, overwrite: true); |
822 | } |
823 | |
824 | static int timehist_entry_event(struct perf_kwork *kwork, |
825 | struct kwork_class *class, |
826 | struct evsel *evsel, |
827 | struct perf_sample *sample, |
828 | struct machine *machine) |
829 | { |
830 | int ret; |
831 | struct kwork_work *work = NULL; |
832 | |
833 | ret = work_push_atom(kwork, class, src_type: KWORK_TRACE_ENTRY, |
834 | dst_type: KWORK_TRACE_RAISE, evsel, sample, |
835 | machine, ret_work: &work, overwrite: true); |
836 | if (ret) |
837 | return ret; |
838 | |
839 | if (work != NULL) |
840 | timehist_save_callchain(kwork, sample, evsel, machine); |
841 | |
842 | return 0; |
843 | } |
844 | |
845 | static int timehist_exit_event(struct perf_kwork *kwork, |
846 | struct kwork_class *class, |
847 | struct evsel *evsel, |
848 | struct perf_sample *sample, |
849 | struct machine *machine) |
850 | { |
851 | struct kwork_atom *atom = NULL; |
852 | struct kwork_work *work = NULL; |
853 | struct addr_location al; |
854 | int ret = 0; |
855 | |
856 | addr_location__init(al: &al); |
857 | if (machine__resolve(machine, al: &al, sample) < 0) { |
858 | pr_debug("Problem processing event, skipping it\n" ); |
859 | ret = -1; |
860 | goto out; |
861 | } |
862 | |
863 | atom = work_pop_atom(kwork, class, src_type: KWORK_TRACE_EXIT, |
864 | dst_type: KWORK_TRACE_ENTRY, evsel, sample, |
865 | machine, ret_work: &work); |
866 | if (work == NULL) { |
867 | ret = -1; |
868 | goto out; |
869 | } |
870 | |
871 | if (atom != NULL) { |
872 | work->nr_atoms++; |
873 | timehist_print_event(kwork, work, atom, sample, al: &al); |
874 | atom_del(atom); |
875 | } |
876 | |
877 | out: |
878 | addr_location__exit(al: &al); |
879 | return ret; |
880 | } |
881 | |
882 | static void top_update_runtime(struct kwork_work *work, |
883 | struct kwork_atom *atom, |
884 | struct perf_sample *sample) |
885 | { |
886 | u64 delta; |
887 | u64 exit_time = sample->time; |
888 | u64 entry_time = atom->time; |
889 | |
890 | if ((entry_time != 0) && (exit_time >= entry_time)) { |
891 | delta = exit_time - entry_time; |
892 | work->total_runtime += delta; |
893 | } |
894 | } |
895 | |
896 | static int top_entry_event(struct perf_kwork *kwork, |
897 | struct kwork_class *class, |
898 | struct evsel *evsel, |
899 | struct perf_sample *sample, |
900 | struct machine *machine) |
901 | { |
902 | return work_push_atom(kwork, class, src_type: KWORK_TRACE_ENTRY, |
903 | dst_type: KWORK_TRACE_MAX, evsel, sample, |
904 | machine, NULL, overwrite: true); |
905 | } |
906 | |
907 | static int top_exit_event(struct perf_kwork *kwork, |
908 | struct kwork_class *class, |
909 | struct evsel *evsel, |
910 | struct perf_sample *sample, |
911 | struct machine *machine) |
912 | { |
913 | struct kwork_work *work, *sched_work; |
914 | struct kwork_class *sched_class; |
915 | struct kwork_atom *atom; |
916 | |
917 | atom = work_pop_atom(kwork, class, src_type: KWORK_TRACE_EXIT, |
918 | dst_type: KWORK_TRACE_ENTRY, evsel, sample, |
919 | machine, ret_work: &work); |
920 | if (!work) |
921 | return -1; |
922 | |
923 | if (atom) { |
924 | sched_class = get_kwork_class(kwork, type: KWORK_CLASS_SCHED); |
925 | if (sched_class) { |
926 | sched_work = find_work_by_id(root: &sched_class->work_root, |
927 | id: work->id, cpu: work->cpu); |
928 | if (sched_work) |
929 | top_update_runtime(work, atom, sample); |
930 | } |
931 | atom_del(atom); |
932 | } |
933 | |
934 | return 0; |
935 | } |
936 | |
937 | static int top_sched_switch_event(struct perf_kwork *kwork, |
938 | struct kwork_class *class, |
939 | struct evsel *evsel, |
940 | struct perf_sample *sample, |
941 | struct machine *machine) |
942 | { |
943 | struct kwork_atom *atom; |
944 | struct kwork_work *work; |
945 | |
946 | atom = work_pop_atom(kwork, class, src_type: KWORK_TRACE_EXIT, |
947 | dst_type: KWORK_TRACE_ENTRY, evsel, sample, |
948 | machine, ret_work: &work); |
949 | if (!work) |
950 | return -1; |
951 | |
952 | if (atom) { |
953 | top_update_runtime(work, atom, sample); |
954 | atom_del(atom); |
955 | } |
956 | |
957 | return top_entry_event(kwork, class, evsel, sample, machine); |
958 | } |
959 | |
960 | static struct kwork_class kwork_irq; |
961 | static int process_irq_handler_entry_event(struct perf_tool *tool, |
962 | struct evsel *evsel, |
963 | struct perf_sample *sample, |
964 | struct machine *machine) |
965 | { |
966 | struct perf_kwork *kwork = container_of(tool, struct perf_kwork, tool); |
967 | |
968 | if (kwork->tp_handler->entry_event) |
969 | return kwork->tp_handler->entry_event(kwork, &kwork_irq, |
970 | evsel, sample, machine); |
971 | return 0; |
972 | } |
973 | |
974 | static int process_irq_handler_exit_event(struct perf_tool *tool, |
975 | struct evsel *evsel, |
976 | struct perf_sample *sample, |
977 | struct machine *machine) |
978 | { |
979 | struct perf_kwork *kwork = container_of(tool, struct perf_kwork, tool); |
980 | |
981 | if (kwork->tp_handler->exit_event) |
982 | return kwork->tp_handler->exit_event(kwork, &kwork_irq, |
983 | evsel, sample, machine); |
984 | return 0; |
985 | } |
986 | |
987 | const struct evsel_str_handler irq_tp_handlers[] = { |
988 | { "irq:irq_handler_entry" , process_irq_handler_entry_event, }, |
989 | { "irq:irq_handler_exit" , process_irq_handler_exit_event, }, |
990 | }; |
991 | |
992 | static int irq_class_init(struct kwork_class *class, |
993 | struct perf_session *session) |
994 | { |
995 | if (perf_session__set_tracepoints_handlers(session, irq_tp_handlers)) { |
996 | pr_err("Failed to set irq tracepoints handlers\n" ); |
997 | return -1; |
998 | } |
999 | |
1000 | class->work_root = RB_ROOT_CACHED; |
1001 | return 0; |
1002 | } |
1003 | |
1004 | static void irq_work_init(struct perf_kwork *kwork, |
1005 | struct kwork_class *class, |
1006 | struct kwork_work *work, |
1007 | enum kwork_trace_type src_type __maybe_unused, |
1008 | struct evsel *evsel, |
1009 | struct perf_sample *sample, |
1010 | struct machine *machine __maybe_unused) |
1011 | { |
1012 | work->class = class; |
1013 | work->cpu = sample->cpu; |
1014 | |
1015 | if (kwork->report == KWORK_REPORT_TOP) { |
1016 | work->id = evsel__intval_common(evsel, sample, "common_pid" ); |
1017 | work->name = NULL; |
1018 | } else { |
1019 | work->id = evsel__intval(evsel, sample, "irq" ); |
1020 | work->name = evsel__strval(evsel, sample, "name" ); |
1021 | } |
1022 | } |
1023 | |
1024 | static void irq_work_name(struct kwork_work *work, char *buf, int len) |
1025 | { |
1026 | snprintf(buf, len, "%s:%" PRIu64 "" , work->name, work->id); |
1027 | } |
1028 | |
1029 | static struct kwork_class kwork_irq = { |
1030 | .name = "irq" , |
1031 | .type = KWORK_CLASS_IRQ, |
1032 | .nr_tracepoints = 2, |
1033 | .tp_handlers = irq_tp_handlers, |
1034 | .class_init = irq_class_init, |
1035 | .work_init = irq_work_init, |
1036 | .work_name = irq_work_name, |
1037 | }; |
1038 | |
1039 | static struct kwork_class kwork_softirq; |
1040 | static int process_softirq_raise_event(struct perf_tool *tool, |
1041 | struct evsel *evsel, |
1042 | struct perf_sample *sample, |
1043 | struct machine *machine) |
1044 | { |
1045 | struct perf_kwork *kwork = container_of(tool, struct perf_kwork, tool); |
1046 | |
1047 | if (kwork->tp_handler->raise_event) |
1048 | return kwork->tp_handler->raise_event(kwork, &kwork_softirq, |
1049 | evsel, sample, machine); |
1050 | |
1051 | return 0; |
1052 | } |
1053 | |
1054 | static int process_softirq_entry_event(struct perf_tool *tool, |
1055 | struct evsel *evsel, |
1056 | struct perf_sample *sample, |
1057 | struct machine *machine) |
1058 | { |
1059 | struct perf_kwork *kwork = container_of(tool, struct perf_kwork, tool); |
1060 | |
1061 | if (kwork->tp_handler->entry_event) |
1062 | return kwork->tp_handler->entry_event(kwork, &kwork_softirq, |
1063 | evsel, sample, machine); |
1064 | |
1065 | return 0; |
1066 | } |
1067 | |
1068 | static int process_softirq_exit_event(struct perf_tool *tool, |
1069 | struct evsel *evsel, |
1070 | struct perf_sample *sample, |
1071 | struct machine *machine) |
1072 | { |
1073 | struct perf_kwork *kwork = container_of(tool, struct perf_kwork, tool); |
1074 | |
1075 | if (kwork->tp_handler->exit_event) |
1076 | return kwork->tp_handler->exit_event(kwork, &kwork_softirq, |
1077 | evsel, sample, machine); |
1078 | |
1079 | return 0; |
1080 | } |
1081 | |
1082 | const struct evsel_str_handler softirq_tp_handlers[] = { |
1083 | { "irq:softirq_raise" , process_softirq_raise_event, }, |
1084 | { "irq:softirq_entry" , process_softirq_entry_event, }, |
1085 | { "irq:softirq_exit" , process_softirq_exit_event, }, |
1086 | }; |
1087 | |
1088 | static int softirq_class_init(struct kwork_class *class, |
1089 | struct perf_session *session) |
1090 | { |
1091 | if (perf_session__set_tracepoints_handlers(session, |
1092 | softirq_tp_handlers)) { |
1093 | pr_err("Failed to set softirq tracepoints handlers\n" ); |
1094 | return -1; |
1095 | } |
1096 | |
1097 | class->work_root = RB_ROOT_CACHED; |
1098 | return 0; |
1099 | } |
1100 | |
1101 | static char *evsel__softirq_name(struct evsel *evsel, u64 num) |
1102 | { |
1103 | char *name = NULL; |
1104 | bool found = false; |
1105 | struct tep_print_flag_sym *sym = NULL; |
1106 | struct tep_print_arg *args = evsel->tp_format->print_fmt.args; |
1107 | |
1108 | if ((args == NULL) || (args->next == NULL)) |
1109 | return NULL; |
1110 | |
1111 | /* skip softirq field: "REC->vec" */ |
1112 | for (sym = args->next->symbol.symbols; sym != NULL; sym = sym->next) { |
1113 | if ((eval_flag(flag: sym->value) == (unsigned long long)num) && |
1114 | (strlen(sym->str) != 0)) { |
1115 | found = true; |
1116 | break; |
1117 | } |
1118 | } |
1119 | |
1120 | if (!found) |
1121 | return NULL; |
1122 | |
1123 | name = strdup(sym->str); |
1124 | if (name == NULL) { |
1125 | pr_err("Failed to copy symbol name\n" ); |
1126 | return NULL; |
1127 | } |
1128 | return name; |
1129 | } |
1130 | |
1131 | static void softirq_work_init(struct perf_kwork *kwork, |
1132 | struct kwork_class *class, |
1133 | struct kwork_work *work, |
1134 | enum kwork_trace_type src_type __maybe_unused, |
1135 | struct evsel *evsel, |
1136 | struct perf_sample *sample, |
1137 | struct machine *machine __maybe_unused) |
1138 | { |
1139 | u64 num; |
1140 | |
1141 | work->class = class; |
1142 | work->cpu = sample->cpu; |
1143 | |
1144 | if (kwork->report == KWORK_REPORT_TOP) { |
1145 | work->id = evsel__intval_common(evsel, sample, "common_pid" ); |
1146 | work->name = NULL; |
1147 | } else { |
1148 | num = evsel__intval(evsel, sample, "vec" ); |
1149 | work->id = num; |
1150 | work->name = evsel__softirq_name(evsel, num); |
1151 | } |
1152 | } |
1153 | |
1154 | static void softirq_work_name(struct kwork_work *work, char *buf, int len) |
1155 | { |
1156 | snprintf(buf, len, "(s)%s:%" PRIu64 "" , work->name, work->id); |
1157 | } |
1158 | |
1159 | static struct kwork_class kwork_softirq = { |
1160 | .name = "softirq" , |
1161 | .type = KWORK_CLASS_SOFTIRQ, |
1162 | .nr_tracepoints = 3, |
1163 | .tp_handlers = softirq_tp_handlers, |
1164 | .class_init = softirq_class_init, |
1165 | .work_init = softirq_work_init, |
1166 | .work_name = softirq_work_name, |
1167 | }; |
1168 | |
1169 | static struct kwork_class kwork_workqueue; |
1170 | static int process_workqueue_activate_work_event(struct perf_tool *tool, |
1171 | struct evsel *evsel, |
1172 | struct perf_sample *sample, |
1173 | struct machine *machine) |
1174 | { |
1175 | struct perf_kwork *kwork = container_of(tool, struct perf_kwork, tool); |
1176 | |
1177 | if (kwork->tp_handler->raise_event) |
1178 | return kwork->tp_handler->raise_event(kwork, &kwork_workqueue, |
1179 | evsel, sample, machine); |
1180 | |
1181 | return 0; |
1182 | } |
1183 | |
1184 | static int process_workqueue_execute_start_event(struct perf_tool *tool, |
1185 | struct evsel *evsel, |
1186 | struct perf_sample *sample, |
1187 | struct machine *machine) |
1188 | { |
1189 | struct perf_kwork *kwork = container_of(tool, struct perf_kwork, tool); |
1190 | |
1191 | if (kwork->tp_handler->entry_event) |
1192 | return kwork->tp_handler->entry_event(kwork, &kwork_workqueue, |
1193 | evsel, sample, machine); |
1194 | |
1195 | return 0; |
1196 | } |
1197 | |
1198 | static int process_workqueue_execute_end_event(struct perf_tool *tool, |
1199 | struct evsel *evsel, |
1200 | struct perf_sample *sample, |
1201 | struct machine *machine) |
1202 | { |
1203 | struct perf_kwork *kwork = container_of(tool, struct perf_kwork, tool); |
1204 | |
1205 | if (kwork->tp_handler->exit_event) |
1206 | return kwork->tp_handler->exit_event(kwork, &kwork_workqueue, |
1207 | evsel, sample, machine); |
1208 | |
1209 | return 0; |
1210 | } |
1211 | |
1212 | const struct evsel_str_handler workqueue_tp_handlers[] = { |
1213 | { "workqueue:workqueue_activate_work" , process_workqueue_activate_work_event, }, |
1214 | { "workqueue:workqueue_execute_start" , process_workqueue_execute_start_event, }, |
1215 | { "workqueue:workqueue_execute_end" , process_workqueue_execute_end_event, }, |
1216 | }; |
1217 | |
1218 | static int workqueue_class_init(struct kwork_class *class, |
1219 | struct perf_session *session) |
1220 | { |
1221 | if (perf_session__set_tracepoints_handlers(session, |
1222 | workqueue_tp_handlers)) { |
1223 | pr_err("Failed to set workqueue tracepoints handlers\n" ); |
1224 | return -1; |
1225 | } |
1226 | |
1227 | class->work_root = RB_ROOT_CACHED; |
1228 | return 0; |
1229 | } |
1230 | |
1231 | static void workqueue_work_init(struct perf_kwork *kwork __maybe_unused, |
1232 | struct kwork_class *class, |
1233 | struct kwork_work *work, |
1234 | enum kwork_trace_type src_type __maybe_unused, |
1235 | struct evsel *evsel, |
1236 | struct perf_sample *sample, |
1237 | struct machine *machine) |
1238 | { |
1239 | char *modp = NULL; |
1240 | unsigned long long function_addr = evsel__intval(evsel, |
1241 | sample, "function" ); |
1242 | |
1243 | work->class = class; |
1244 | work->cpu = sample->cpu; |
1245 | work->id = evsel__intval(evsel, sample, "work" ); |
1246 | work->name = function_addr == 0 ? NULL : |
1247 | machine__resolve_kernel_addr(vmachine: machine, addrp: &function_addr, modp: &modp); |
1248 | } |
1249 | |
1250 | static void workqueue_work_name(struct kwork_work *work, char *buf, int len) |
1251 | { |
1252 | if (work->name != NULL) |
1253 | snprintf(buf, size: len, fmt: "(w)%s" , work->name); |
1254 | else |
1255 | snprintf(buf, len, "(w)0x%" PRIx64, work->id); |
1256 | } |
1257 | |
1258 | static struct kwork_class kwork_workqueue = { |
1259 | .name = "workqueue" , |
1260 | .type = KWORK_CLASS_WORKQUEUE, |
1261 | .nr_tracepoints = 3, |
1262 | .tp_handlers = workqueue_tp_handlers, |
1263 | .class_init = workqueue_class_init, |
1264 | .work_init = workqueue_work_init, |
1265 | .work_name = workqueue_work_name, |
1266 | }; |
1267 | |
1268 | static struct kwork_class kwork_sched; |
1269 | static int process_sched_switch_event(struct perf_tool *tool, |
1270 | struct evsel *evsel, |
1271 | struct perf_sample *sample, |
1272 | struct machine *machine) |
1273 | { |
1274 | struct perf_kwork *kwork = container_of(tool, struct perf_kwork, tool); |
1275 | |
1276 | if (kwork->tp_handler->sched_switch_event) |
1277 | return kwork->tp_handler->sched_switch_event(kwork, &kwork_sched, |
1278 | evsel, sample, machine); |
1279 | return 0; |
1280 | } |
1281 | |
1282 | const struct evsel_str_handler sched_tp_handlers[] = { |
1283 | { "sched:sched_switch" , process_sched_switch_event, }, |
1284 | }; |
1285 | |
1286 | static int sched_class_init(struct kwork_class *class, |
1287 | struct perf_session *session) |
1288 | { |
1289 | if (perf_session__set_tracepoints_handlers(session, |
1290 | sched_tp_handlers)) { |
1291 | pr_err("Failed to set sched tracepoints handlers\n" ); |
1292 | return -1; |
1293 | } |
1294 | |
1295 | class->work_root = RB_ROOT_CACHED; |
1296 | return 0; |
1297 | } |
1298 | |
1299 | static void sched_work_init(struct perf_kwork *kwork __maybe_unused, |
1300 | struct kwork_class *class, |
1301 | struct kwork_work *work, |
1302 | enum kwork_trace_type src_type, |
1303 | struct evsel *evsel, |
1304 | struct perf_sample *sample, |
1305 | struct machine *machine __maybe_unused) |
1306 | { |
1307 | work->class = class; |
1308 | work->cpu = sample->cpu; |
1309 | |
1310 | if (src_type == KWORK_TRACE_EXIT) { |
1311 | work->id = evsel__intval(evsel, sample, "prev_pid" ); |
1312 | work->name = strdup(evsel__strval(evsel, sample, "prev_comm" )); |
1313 | } else if (src_type == KWORK_TRACE_ENTRY) { |
1314 | work->id = evsel__intval(evsel, sample, "next_pid" ); |
1315 | work->name = strdup(evsel__strval(evsel, sample, "next_comm" )); |
1316 | } |
1317 | } |
1318 | |
1319 | static void sched_work_name(struct kwork_work *work, char *buf, int len) |
1320 | { |
1321 | snprintf(buf, size: len, fmt: "%s" , work->name); |
1322 | } |
1323 | |
1324 | static struct kwork_class kwork_sched = { |
1325 | .name = "sched" , |
1326 | .type = KWORK_CLASS_SCHED, |
1327 | .nr_tracepoints = ARRAY_SIZE(sched_tp_handlers), |
1328 | .tp_handlers = sched_tp_handlers, |
1329 | .class_init = sched_class_init, |
1330 | .work_init = sched_work_init, |
1331 | .work_name = sched_work_name, |
1332 | }; |
1333 | |
1334 | static struct kwork_class *kwork_class_supported_list[KWORK_CLASS_MAX] = { |
1335 | [KWORK_CLASS_IRQ] = &kwork_irq, |
1336 | [KWORK_CLASS_SOFTIRQ] = &kwork_softirq, |
1337 | [KWORK_CLASS_WORKQUEUE] = &kwork_workqueue, |
1338 | [KWORK_CLASS_SCHED] = &kwork_sched, |
1339 | }; |
1340 | |
1341 | static void print_separator(int len) |
1342 | { |
1343 | printf(" %.*s\n" , len, graph_dotted_line); |
1344 | } |
1345 | |
1346 | static int report_print_work(struct perf_kwork *kwork, struct kwork_work *work) |
1347 | { |
1348 | int ret = 0; |
1349 | char kwork_name[PRINT_KWORK_NAME_WIDTH]; |
1350 | char max_runtime_start[32], max_runtime_end[32]; |
1351 | char max_latency_start[32], max_latency_end[32]; |
1352 | |
1353 | printf(" " ); |
1354 | |
1355 | /* |
1356 | * kwork name |
1357 | */ |
1358 | if (work->class && work->class->work_name) { |
1359 | work->class->work_name(work, kwork_name, |
1360 | PRINT_KWORK_NAME_WIDTH); |
1361 | ret += printf(" %-*s |" , PRINT_KWORK_NAME_WIDTH, kwork_name); |
1362 | } else { |
1363 | ret += printf(" %-*s |" , PRINT_KWORK_NAME_WIDTH, "" ); |
1364 | } |
1365 | |
1366 | /* |
1367 | * cpu |
1368 | */ |
1369 | ret += printf(" %0*d |" , PRINT_CPU_WIDTH, work->cpu); |
1370 | |
1371 | /* |
1372 | * total runtime |
1373 | */ |
1374 | if (kwork->report == KWORK_REPORT_RUNTIME) { |
1375 | ret += printf(" %*.*f ms |" , |
1376 | PRINT_RUNTIME_WIDTH, RPINT_DECIMAL_WIDTH, |
1377 | (double)work->total_runtime / NSEC_PER_MSEC); |
1378 | } else if (kwork->report == KWORK_REPORT_LATENCY) { // avg delay |
1379 | ret += printf(" %*.*f ms |" , |
1380 | PRINT_LATENCY_WIDTH, RPINT_DECIMAL_WIDTH, |
1381 | (double)work->total_latency / |
1382 | work->nr_atoms / NSEC_PER_MSEC); |
1383 | } |
1384 | |
1385 | /* |
1386 | * count |
1387 | */ |
1388 | ret += printf(" %*" PRIu64 " |" , PRINT_COUNT_WIDTH, work->nr_atoms); |
1389 | |
1390 | /* |
1391 | * max runtime, max runtime start, max runtime end |
1392 | */ |
1393 | if (kwork->report == KWORK_REPORT_RUNTIME) { |
1394 | timestamp__scnprintf_usec(work->max_runtime_start, |
1395 | max_runtime_start, |
1396 | sizeof(max_runtime_start)); |
1397 | timestamp__scnprintf_usec(work->max_runtime_end, |
1398 | max_runtime_end, |
1399 | sizeof(max_runtime_end)); |
1400 | ret += printf(" %*.*f ms | %*s s | %*s s |" , |
1401 | PRINT_RUNTIME_WIDTH, RPINT_DECIMAL_WIDTH, |
1402 | (double)work->max_runtime / NSEC_PER_MSEC, |
1403 | PRINT_TIMESTAMP_WIDTH, max_runtime_start, |
1404 | PRINT_TIMESTAMP_WIDTH, max_runtime_end); |
1405 | } |
1406 | /* |
1407 | * max delay, max delay start, max delay end |
1408 | */ |
1409 | else if (kwork->report == KWORK_REPORT_LATENCY) { |
1410 | timestamp__scnprintf_usec(work->max_latency_start, |
1411 | max_latency_start, |
1412 | sizeof(max_latency_start)); |
1413 | timestamp__scnprintf_usec(work->max_latency_end, |
1414 | max_latency_end, |
1415 | sizeof(max_latency_end)); |
1416 | ret += printf(" %*.*f ms | %*s s | %*s s |" , |
1417 | PRINT_LATENCY_WIDTH, RPINT_DECIMAL_WIDTH, |
1418 | (double)work->max_latency / NSEC_PER_MSEC, |
1419 | PRINT_TIMESTAMP_WIDTH, max_latency_start, |
1420 | PRINT_TIMESTAMP_WIDTH, max_latency_end); |
1421 | } |
1422 | |
1423 | printf("\n" ); |
1424 | return ret; |
1425 | } |
1426 | |
1427 | static int (struct perf_kwork *kwork) |
1428 | { |
1429 | int ret; |
1430 | |
1431 | printf("\n " ); |
1432 | ret = printf(" %-*s | %-*s |" , |
1433 | PRINT_KWORK_NAME_WIDTH, "Kwork Name" , |
1434 | PRINT_CPU_WIDTH, "Cpu" ); |
1435 | |
1436 | if (kwork->report == KWORK_REPORT_RUNTIME) { |
1437 | ret += printf(" %-*s |" , |
1438 | PRINT_RUNTIME_HEADER_WIDTH, "Total Runtime" ); |
1439 | } else if (kwork->report == KWORK_REPORT_LATENCY) { |
1440 | ret += printf(" %-*s |" , |
1441 | PRINT_LATENCY_HEADER_WIDTH, "Avg delay" ); |
1442 | } |
1443 | |
1444 | ret += printf(" %-*s |" , PRINT_COUNT_WIDTH, "Count" ); |
1445 | |
1446 | if (kwork->report == KWORK_REPORT_RUNTIME) { |
1447 | ret += printf(" %-*s | %-*s | %-*s |" , |
1448 | PRINT_RUNTIME_HEADER_WIDTH, "Max runtime" , |
1449 | PRINT_TIMESTAMP_HEADER_WIDTH, "Max runtime start" , |
1450 | PRINT_TIMESTAMP_HEADER_WIDTH, "Max runtime end" ); |
1451 | } else if (kwork->report == KWORK_REPORT_LATENCY) { |
1452 | ret += printf(" %-*s | %-*s | %-*s |" , |
1453 | PRINT_LATENCY_HEADER_WIDTH, "Max delay" , |
1454 | PRINT_TIMESTAMP_HEADER_WIDTH, "Max delay start" , |
1455 | PRINT_TIMESTAMP_HEADER_WIDTH, "Max delay end" ); |
1456 | } |
1457 | |
1458 | printf("\n" ); |
1459 | print_separator(len: ret); |
1460 | return ret; |
1461 | } |
1462 | |
1463 | static void (void) |
1464 | { |
1465 | /* |
1466 | * header row |
1467 | */ |
1468 | printf(" %-*s %-*s %-*s %-*s %-*s %-*s\n" , |
1469 | PRINT_TIMESTAMP_WIDTH, "Runtime start" , |
1470 | PRINT_TIMESTAMP_WIDTH, "Runtime end" , |
1471 | PRINT_TIMEHIST_CPU_WIDTH, "Cpu" , |
1472 | PRINT_KWORK_NAME_WIDTH, "Kwork name" , |
1473 | PRINT_RUNTIME_WIDTH, "Runtime" , |
1474 | PRINT_RUNTIME_WIDTH, "Delaytime" ); |
1475 | |
1476 | /* |
1477 | * units row |
1478 | */ |
1479 | printf(" %-*s %-*s %-*s %-*s %-*s %-*s\n" , |
1480 | PRINT_TIMESTAMP_WIDTH, "" , |
1481 | PRINT_TIMESTAMP_WIDTH, "" , |
1482 | PRINT_TIMEHIST_CPU_WIDTH, "" , |
1483 | PRINT_KWORK_NAME_WIDTH, "(TYPE)NAME:NUM" , |
1484 | PRINT_RUNTIME_WIDTH, "(msec)" , |
1485 | PRINT_RUNTIME_WIDTH, "(msec)" ); |
1486 | |
1487 | /* |
1488 | * separator |
1489 | */ |
1490 | printf(" %.*s %.*s %.*s %.*s %.*s %.*s\n" , |
1491 | PRINT_TIMESTAMP_WIDTH, graph_dotted_line, |
1492 | PRINT_TIMESTAMP_WIDTH, graph_dotted_line, |
1493 | PRINT_TIMEHIST_CPU_WIDTH, graph_dotted_line, |
1494 | PRINT_KWORK_NAME_WIDTH, graph_dotted_line, |
1495 | PRINT_RUNTIME_WIDTH, graph_dotted_line, |
1496 | PRINT_RUNTIME_WIDTH, graph_dotted_line); |
1497 | } |
1498 | |
1499 | static void print_summary(struct perf_kwork *kwork) |
1500 | { |
1501 | u64 time = kwork->timeend - kwork->timestart; |
1502 | |
1503 | printf(" Total count : %9" PRIu64 "\n" , kwork->all_count); |
1504 | printf(" Total runtime (msec) : %9.3f (%.3f%% load average)\n" , |
1505 | (double)kwork->all_runtime / NSEC_PER_MSEC, |
1506 | time == 0 ? 0 : (double)kwork->all_runtime / time); |
1507 | printf(" Total time span (msec) : %9.3f\n" , |
1508 | (double)time / NSEC_PER_MSEC); |
1509 | } |
1510 | |
1511 | static unsigned long long nr_list_entry(struct list_head *head) |
1512 | { |
1513 | struct list_head *pos; |
1514 | unsigned long long n = 0; |
1515 | |
1516 | list_for_each(pos, head) |
1517 | n++; |
1518 | |
1519 | return n; |
1520 | } |
1521 | |
1522 | static void print_skipped_events(struct perf_kwork *kwork) |
1523 | { |
1524 | int i; |
1525 | const char *const kwork_event_str[] = { |
1526 | [KWORK_TRACE_RAISE] = "raise" , |
1527 | [KWORK_TRACE_ENTRY] = "entry" , |
1528 | [KWORK_TRACE_EXIT] = "exit" , |
1529 | }; |
1530 | |
1531 | if ((kwork->nr_skipped_events[KWORK_TRACE_MAX] != 0) && |
1532 | (kwork->nr_events != 0)) { |
1533 | printf(" INFO: %.3f%% skipped events (%" PRIu64 " including " , |
1534 | (double)kwork->nr_skipped_events[KWORK_TRACE_MAX] / |
1535 | (double)kwork->nr_events * 100.0, |
1536 | kwork->nr_skipped_events[KWORK_TRACE_MAX]); |
1537 | |
1538 | for (i = 0; i < KWORK_TRACE_MAX; i++) { |
1539 | printf("%" PRIu64 " %s%s" , |
1540 | kwork->nr_skipped_events[i], |
1541 | kwork_event_str[i], |
1542 | (i == KWORK_TRACE_MAX - 1) ? ")\n" : ", " ); |
1543 | } |
1544 | } |
1545 | |
1546 | if (verbose > 0) |
1547 | printf(" INFO: use %lld atom pages\n" , |
1548 | nr_list_entry(head: &kwork->atom_page_list)); |
1549 | } |
1550 | |
1551 | static void print_bad_events(struct perf_kwork *kwork) |
1552 | { |
1553 | if ((kwork->nr_lost_events != 0) && (kwork->nr_events != 0)) { |
1554 | printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n" , |
1555 | (double)kwork->nr_lost_events / |
1556 | (double)kwork->nr_events * 100.0, |
1557 | kwork->nr_lost_events, kwork->nr_events, |
1558 | kwork->nr_lost_chunks); |
1559 | } |
1560 | } |
1561 | |
1562 | const char *graph_load = "||||||||||||||||||||||||||||||||||||||||||||||||" ; |
1563 | const char *graph_idle = " " ; |
1564 | static void top_print_per_cpu_load(struct perf_kwork *kwork) |
1565 | { |
1566 | int i, load_width; |
1567 | u64 total, load, load_ratio; |
1568 | struct kwork_top_stat *stat = &kwork->top_stat; |
1569 | |
1570 | for (i = 0; i < MAX_NR_CPUS; i++) { |
1571 | total = stat->cpus_runtime[i].total; |
1572 | load = stat->cpus_runtime[i].load; |
1573 | if (test_bit(i, stat->all_cpus_bitmap) && total) { |
1574 | load_ratio = load * 10000 / total; |
1575 | load_width = PRINT_CPU_USAGE_HIST_WIDTH * |
1576 | load_ratio / 10000; |
1577 | |
1578 | printf("%%Cpu%-*d[%.*s%.*s %*.*f%%]\n" , |
1579 | PRINT_CPU_WIDTH, i, |
1580 | load_width, graph_load, |
1581 | PRINT_CPU_USAGE_HIST_WIDTH - load_width, |
1582 | graph_idle, |
1583 | PRINT_CPU_USAGE_WIDTH, |
1584 | PRINT_CPU_USAGE_DECIMAL_WIDTH, |
1585 | (double)load_ratio / 100); |
1586 | } |
1587 | } |
1588 | } |
1589 | |
1590 | static void top_print_cpu_usage(struct perf_kwork *kwork) |
1591 | { |
1592 | struct kwork_top_stat *stat = &kwork->top_stat; |
1593 | u64 idle_time = stat->cpus_runtime[MAX_NR_CPUS].idle; |
1594 | u64 hardirq_time = stat->cpus_runtime[MAX_NR_CPUS].irq; |
1595 | u64 softirq_time = stat->cpus_runtime[MAX_NR_CPUS].softirq; |
1596 | int cpus_nr = bitmap_weight(stat->all_cpus_bitmap, MAX_NR_CPUS); |
1597 | u64 cpus_total_time = stat->cpus_runtime[MAX_NR_CPUS].total; |
1598 | |
1599 | printf("Total : %*.*f ms, %d cpus\n" , |
1600 | PRINT_RUNTIME_WIDTH, RPINT_DECIMAL_WIDTH, |
1601 | (double)cpus_total_time / NSEC_PER_MSEC, |
1602 | cpus_nr); |
1603 | |
1604 | printf("%%Cpu(s): %*.*f%% id, %*.*f%% hi, %*.*f%% si\n" , |
1605 | PRINT_CPU_USAGE_WIDTH, PRINT_CPU_USAGE_DECIMAL_WIDTH, |
1606 | cpus_total_time ? (double)idle_time * 100 / cpus_total_time : 0, |
1607 | |
1608 | PRINT_CPU_USAGE_WIDTH, PRINT_CPU_USAGE_DECIMAL_WIDTH, |
1609 | cpus_total_time ? (double)hardirq_time * 100 / cpus_total_time : 0, |
1610 | |
1611 | PRINT_CPU_USAGE_WIDTH, PRINT_CPU_USAGE_DECIMAL_WIDTH, |
1612 | cpus_total_time ? (double)softirq_time * 100 / cpus_total_time : 0); |
1613 | |
1614 | top_print_per_cpu_load(kwork); |
1615 | } |
1616 | |
1617 | static void (struct perf_kwork *kwork __maybe_unused) |
1618 | { |
1619 | int ret; |
1620 | |
1621 | printf("\n " ); |
1622 | ret = printf(" %*s %s%*s%s %*s %*s %-*s" , |
1623 | PRINT_PID_WIDTH, "PID" , |
1624 | |
1625 | kwork->use_bpf ? " " : "" , |
1626 | kwork->use_bpf ? PRINT_PID_WIDTH : 0, |
1627 | kwork->use_bpf ? "SPID" : "" , |
1628 | kwork->use_bpf ? " " : "" , |
1629 | |
1630 | PRINT_CPU_USAGE_WIDTH, "%CPU" , |
1631 | PRINT_RUNTIME_HEADER_WIDTH + RPINT_DECIMAL_WIDTH, "RUNTIME" , |
1632 | PRINT_TASK_NAME_WIDTH, "COMMAND" ); |
1633 | printf("\n " ); |
1634 | print_separator(len: ret); |
1635 | } |
1636 | |
1637 | static int top_print_work(struct perf_kwork *kwork __maybe_unused, struct kwork_work *work) |
1638 | { |
1639 | int ret = 0; |
1640 | |
1641 | printf(" " ); |
1642 | |
1643 | /* |
1644 | * pid |
1645 | */ |
1646 | ret += printf(" %*" PRIu64 " " , PRINT_PID_WIDTH, work->id); |
1647 | |
1648 | /* |
1649 | * tgid |
1650 | */ |
1651 | if (kwork->use_bpf) |
1652 | ret += printf(" %*d " , PRINT_PID_WIDTH, work->tgid); |
1653 | |
1654 | /* |
1655 | * cpu usage |
1656 | */ |
1657 | ret += printf(" %*.*f " , |
1658 | PRINT_CPU_USAGE_WIDTH, PRINT_CPU_USAGE_DECIMAL_WIDTH, |
1659 | (double)work->cpu_usage / 100); |
1660 | |
1661 | /* |
1662 | * total runtime |
1663 | */ |
1664 | ret += printf(" %*.*f ms " , |
1665 | PRINT_RUNTIME_WIDTH + RPINT_DECIMAL_WIDTH, RPINT_DECIMAL_WIDTH, |
1666 | (double)work->total_runtime / NSEC_PER_MSEC); |
1667 | |
1668 | /* |
1669 | * command |
1670 | */ |
1671 | if (kwork->use_bpf) |
1672 | ret += printf(" %s%s%s" , |
1673 | work->is_kthread ? "[" : "" , |
1674 | work->name, |
1675 | work->is_kthread ? "]" : "" ); |
1676 | else |
1677 | ret += printf(" %-*s" , PRINT_TASK_NAME_WIDTH, work->name); |
1678 | |
1679 | printf("\n" ); |
1680 | return ret; |
1681 | } |
1682 | |
1683 | static void work_sort(struct perf_kwork *kwork, |
1684 | struct kwork_class *class, struct rb_root_cached *root) |
1685 | { |
1686 | struct rb_node *node; |
1687 | struct kwork_work *data; |
1688 | |
1689 | pr_debug("Sorting %s ...\n" , class->name); |
1690 | for (;;) { |
1691 | node = rb_first_cached(root); |
1692 | if (!node) |
1693 | break; |
1694 | |
1695 | rb_erase_cached(node, root); |
1696 | data = rb_entry(node, struct kwork_work, node); |
1697 | work_insert(root: &kwork->sorted_work_root, |
1698 | key: data, sort_list: &kwork->sort_list); |
1699 | } |
1700 | } |
1701 | |
1702 | static void perf_kwork__sort(struct perf_kwork *kwork) |
1703 | { |
1704 | struct kwork_class *class; |
1705 | |
1706 | list_for_each_entry(class, &kwork->class_list, list) |
1707 | work_sort(kwork, class, root: &class->work_root); |
1708 | } |
1709 | |
1710 | static int perf_kwork__check_config(struct perf_kwork *kwork, |
1711 | struct perf_session *session) |
1712 | { |
1713 | int ret; |
1714 | struct evsel *evsel; |
1715 | struct kwork_class *class; |
1716 | |
1717 | static struct trace_kwork_handler report_ops = { |
1718 | .entry_event = report_entry_event, |
1719 | .exit_event = report_exit_event, |
1720 | }; |
1721 | static struct trace_kwork_handler latency_ops = { |
1722 | .raise_event = latency_raise_event, |
1723 | .entry_event = latency_entry_event, |
1724 | }; |
1725 | static struct trace_kwork_handler timehist_ops = { |
1726 | .raise_event = timehist_raise_event, |
1727 | .entry_event = timehist_entry_event, |
1728 | .exit_event = timehist_exit_event, |
1729 | }; |
1730 | static struct trace_kwork_handler top_ops = { |
1731 | .entry_event = timehist_entry_event, |
1732 | .exit_event = top_exit_event, |
1733 | .sched_switch_event = top_sched_switch_event, |
1734 | }; |
1735 | |
1736 | switch (kwork->report) { |
1737 | case KWORK_REPORT_RUNTIME: |
1738 | kwork->tp_handler = &report_ops; |
1739 | break; |
1740 | case KWORK_REPORT_LATENCY: |
1741 | kwork->tp_handler = &latency_ops; |
1742 | break; |
1743 | case KWORK_REPORT_TIMEHIST: |
1744 | kwork->tp_handler = &timehist_ops; |
1745 | break; |
1746 | case KWORK_REPORT_TOP: |
1747 | kwork->tp_handler = &top_ops; |
1748 | break; |
1749 | default: |
1750 | pr_debug("Invalid report type %d\n" , kwork->report); |
1751 | return -1; |
1752 | } |
1753 | |
1754 | list_for_each_entry(class, &kwork->class_list, list) |
1755 | if ((class->class_init != NULL) && |
1756 | (class->class_init(class, session) != 0)) |
1757 | return -1; |
1758 | |
1759 | if (kwork->cpu_list != NULL) { |
1760 | ret = perf_session__cpu_bitmap(session, |
1761 | cpu_list: kwork->cpu_list, |
1762 | cpu_bitmap: kwork->cpu_bitmap); |
1763 | if (ret < 0) { |
1764 | pr_err("Invalid cpu bitmap\n" ); |
1765 | return -1; |
1766 | } |
1767 | } |
1768 | |
1769 | if (kwork->time_str != NULL) { |
1770 | ret = perf_time__parse_str(&kwork->ptime, kwork->time_str); |
1771 | if (ret != 0) { |
1772 | pr_err("Invalid time span\n" ); |
1773 | return -1; |
1774 | } |
1775 | } |
1776 | |
1777 | list_for_each_entry(evsel, &session->evlist->core.entries, core.node) { |
1778 | if (kwork->show_callchain && !evsel__has_callchain(evsel)) { |
1779 | pr_debug("Samples do not have callchains\n" ); |
1780 | kwork->show_callchain = 0; |
1781 | symbol_conf.use_callchain = 0; |
1782 | } |
1783 | } |
1784 | |
1785 | return 0; |
1786 | } |
1787 | |
1788 | static int perf_kwork__read_events(struct perf_kwork *kwork) |
1789 | { |
1790 | int ret = -1; |
1791 | struct perf_session *session = NULL; |
1792 | |
1793 | struct perf_data data = { |
1794 | .path = input_name, |
1795 | .mode = PERF_DATA_MODE_READ, |
1796 | .force = kwork->force, |
1797 | }; |
1798 | |
1799 | session = perf_session__new(data: &data, tool: &kwork->tool); |
1800 | if (IS_ERR(ptr: session)) { |
1801 | pr_debug("Error creating perf session\n" ); |
1802 | return PTR_ERR(ptr: session); |
1803 | } |
1804 | |
1805 | symbol__init(env: &session->header.env); |
1806 | |
1807 | if (perf_kwork__check_config(kwork, session) != 0) |
1808 | goto out_delete; |
1809 | |
1810 | if (session->tevent.pevent && |
1811 | tep_set_function_resolver(session->tevent.pevent, |
1812 | machine__resolve_kernel_addr, |
1813 | &session->machines.host) < 0) { |
1814 | pr_err("Failed to set libtraceevent function resolver\n" ); |
1815 | goto out_delete; |
1816 | } |
1817 | |
1818 | if (kwork->report == KWORK_REPORT_TIMEHIST) |
1819 | timehist_print_header(); |
1820 | |
1821 | ret = perf_session__process_events(session); |
1822 | if (ret) { |
1823 | pr_debug("Failed to process events, error %d\n" , ret); |
1824 | goto out_delete; |
1825 | } |
1826 | |
1827 | kwork->nr_events = session->evlist->stats.nr_events[0]; |
1828 | kwork->nr_lost_events = session->evlist->stats.total_lost; |
1829 | kwork->nr_lost_chunks = session->evlist->stats.nr_events[PERF_RECORD_LOST]; |
1830 | |
1831 | out_delete: |
1832 | perf_session__delete(session); |
1833 | return ret; |
1834 | } |
1835 | |
1836 | static void process_skipped_events(struct perf_kwork *kwork, |
1837 | struct kwork_work *work) |
1838 | { |
1839 | int i; |
1840 | unsigned long long count; |
1841 | |
1842 | for (i = 0; i < KWORK_TRACE_MAX; i++) { |
1843 | count = nr_list_entry(head: &work->atom_list[i]); |
1844 | kwork->nr_skipped_events[i] += count; |
1845 | kwork->nr_skipped_events[KWORK_TRACE_MAX] += count; |
1846 | } |
1847 | } |
1848 | |
1849 | struct kwork_work *perf_kwork_add_work(struct perf_kwork *kwork, |
1850 | struct kwork_class *class, |
1851 | struct kwork_work *key) |
1852 | { |
1853 | struct kwork_work *work = NULL; |
1854 | |
1855 | work = work_new(key); |
1856 | if (work == NULL) |
1857 | return NULL; |
1858 | |
1859 | work_insert(root: &class->work_root, key: work, sort_list: &kwork->cmp_id); |
1860 | return work; |
1861 | } |
1862 | |
1863 | static void sig_handler(int sig) |
1864 | { |
1865 | /* |
1866 | * Simply capture termination signal so that |
1867 | * the program can continue after pause returns |
1868 | */ |
1869 | pr_debug("Capture signal %d\n" , sig); |
1870 | } |
1871 | |
1872 | static int perf_kwork__report_bpf(struct perf_kwork *kwork) |
1873 | { |
1874 | int ret; |
1875 | |
1876 | signal(SIGINT, sig_handler); |
1877 | signal(SIGTERM, sig_handler); |
1878 | |
1879 | ret = perf_kwork__trace_prepare_bpf(kwork); |
1880 | if (ret) |
1881 | return -1; |
1882 | |
1883 | printf("Starting trace, Hit <Ctrl+C> to stop and report\n" ); |
1884 | |
1885 | perf_kwork__trace_start(); |
1886 | |
1887 | /* |
1888 | * a simple pause, wait here for stop signal |
1889 | */ |
1890 | pause(); |
1891 | |
1892 | perf_kwork__trace_finish(); |
1893 | |
1894 | perf_kwork__report_read_bpf(kwork); |
1895 | |
1896 | perf_kwork__report_cleanup_bpf(); |
1897 | |
1898 | return 0; |
1899 | } |
1900 | |
1901 | static int perf_kwork__report(struct perf_kwork *kwork) |
1902 | { |
1903 | int ret; |
1904 | struct rb_node *next; |
1905 | struct kwork_work *work; |
1906 | |
1907 | if (kwork->use_bpf) |
1908 | ret = perf_kwork__report_bpf(kwork); |
1909 | else |
1910 | ret = perf_kwork__read_events(kwork); |
1911 | |
1912 | if (ret != 0) |
1913 | return -1; |
1914 | |
1915 | perf_kwork__sort(kwork); |
1916 | |
1917 | setup_pager(); |
1918 | |
1919 | ret = report_print_header(kwork); |
1920 | next = rb_first_cached(&kwork->sorted_work_root); |
1921 | while (next) { |
1922 | work = rb_entry(next, struct kwork_work, node); |
1923 | process_skipped_events(kwork, work); |
1924 | |
1925 | if (work->nr_atoms != 0) { |
1926 | report_print_work(kwork, work); |
1927 | if (kwork->summary) { |
1928 | kwork->all_runtime += work->total_runtime; |
1929 | kwork->all_count += work->nr_atoms; |
1930 | } |
1931 | } |
1932 | next = rb_next(next); |
1933 | } |
1934 | print_separator(len: ret); |
1935 | |
1936 | if (kwork->summary) { |
1937 | print_summary(kwork); |
1938 | print_separator(len: ret); |
1939 | } |
1940 | |
1941 | print_bad_events(kwork); |
1942 | print_skipped_events(kwork); |
1943 | printf("\n" ); |
1944 | |
1945 | return 0; |
1946 | } |
1947 | |
1948 | typedef int (*tracepoint_handler)(struct perf_tool *tool, |
1949 | struct evsel *evsel, |
1950 | struct perf_sample *sample, |
1951 | struct machine *machine); |
1952 | |
1953 | static int perf_kwork__process_tracepoint_sample(struct perf_tool *tool, |
1954 | union perf_event *event __maybe_unused, |
1955 | struct perf_sample *sample, |
1956 | struct evsel *evsel, |
1957 | struct machine *machine) |
1958 | { |
1959 | int err = 0; |
1960 | |
1961 | if (evsel->handler != NULL) { |
1962 | tracepoint_handler f = evsel->handler; |
1963 | |
1964 | err = f(tool, evsel, sample, machine); |
1965 | } |
1966 | |
1967 | return err; |
1968 | } |
1969 | |
1970 | static int perf_kwork__timehist(struct perf_kwork *kwork) |
1971 | { |
1972 | /* |
1973 | * event handlers for timehist option |
1974 | */ |
1975 | kwork->tool.comm = perf_event__process_comm; |
1976 | kwork->tool.exit = perf_event__process_exit; |
1977 | kwork->tool.fork = perf_event__process_fork; |
1978 | kwork->tool.attr = perf_event__process_attr; |
1979 | kwork->tool.tracing_data = perf_event__process_tracing_data; |
1980 | kwork->tool.build_id = perf_event__process_build_id; |
1981 | kwork->tool.ordered_events = true; |
1982 | kwork->tool.ordering_requires_timestamps = true; |
1983 | symbol_conf.use_callchain = kwork->show_callchain; |
1984 | |
1985 | if (symbol__validate_sym_arguments()) { |
1986 | pr_err("Failed to validate sym arguments\n" ); |
1987 | return -1; |
1988 | } |
1989 | |
1990 | setup_pager(); |
1991 | |
1992 | return perf_kwork__read_events(kwork); |
1993 | } |
1994 | |
1995 | static void top_calc_total_runtime(struct perf_kwork *kwork) |
1996 | { |
1997 | struct kwork_class *class; |
1998 | struct kwork_work *work; |
1999 | struct rb_node *next; |
2000 | struct kwork_top_stat *stat = &kwork->top_stat; |
2001 | |
2002 | class = get_kwork_class(kwork, type: KWORK_CLASS_SCHED); |
2003 | if (!class) |
2004 | return; |
2005 | |
2006 | next = rb_first_cached(&class->work_root); |
2007 | while (next) { |
2008 | work = rb_entry(next, struct kwork_work, node); |
2009 | BUG_ON(work->cpu >= MAX_NR_CPUS); |
2010 | stat->cpus_runtime[work->cpu].total += work->total_runtime; |
2011 | stat->cpus_runtime[MAX_NR_CPUS].total += work->total_runtime; |
2012 | next = rb_next(next); |
2013 | } |
2014 | } |
2015 | |
2016 | static void top_calc_idle_time(struct perf_kwork *kwork, |
2017 | struct kwork_work *work) |
2018 | { |
2019 | struct kwork_top_stat *stat = &kwork->top_stat; |
2020 | |
2021 | if (work->id == 0) { |
2022 | stat->cpus_runtime[work->cpu].idle += work->total_runtime; |
2023 | stat->cpus_runtime[MAX_NR_CPUS].idle += work->total_runtime; |
2024 | } |
2025 | } |
2026 | |
2027 | static void top_calc_irq_runtime(struct perf_kwork *kwork, |
2028 | enum kwork_class_type type, |
2029 | struct kwork_work *work) |
2030 | { |
2031 | struct kwork_top_stat *stat = &kwork->top_stat; |
2032 | |
2033 | if (type == KWORK_CLASS_IRQ) { |
2034 | stat->cpus_runtime[work->cpu].irq += work->total_runtime; |
2035 | stat->cpus_runtime[MAX_NR_CPUS].irq += work->total_runtime; |
2036 | } else if (type == KWORK_CLASS_SOFTIRQ) { |
2037 | stat->cpus_runtime[work->cpu].softirq += work->total_runtime; |
2038 | stat->cpus_runtime[MAX_NR_CPUS].softirq += work->total_runtime; |
2039 | } |
2040 | } |
2041 | |
2042 | static void top_subtract_irq_runtime(struct perf_kwork *kwork, |
2043 | struct kwork_work *work) |
2044 | { |
2045 | struct kwork_class *class; |
2046 | struct kwork_work *data; |
2047 | unsigned int i; |
2048 | int irq_class_list[] = {KWORK_CLASS_IRQ, KWORK_CLASS_SOFTIRQ}; |
2049 | |
2050 | for (i = 0; i < ARRAY_SIZE(irq_class_list); i++) { |
2051 | class = get_kwork_class(kwork, type: irq_class_list[i]); |
2052 | if (!class) |
2053 | continue; |
2054 | |
2055 | data = find_work_by_id(root: &class->work_root, |
2056 | id: work->id, cpu: work->cpu); |
2057 | if (!data) |
2058 | continue; |
2059 | |
2060 | if (work->total_runtime > data->total_runtime) { |
2061 | work->total_runtime -= data->total_runtime; |
2062 | top_calc_irq_runtime(kwork, type: irq_class_list[i], work: data); |
2063 | } |
2064 | } |
2065 | } |
2066 | |
2067 | static void top_calc_cpu_usage(struct perf_kwork *kwork) |
2068 | { |
2069 | struct kwork_class *class; |
2070 | struct kwork_work *work; |
2071 | struct rb_node *next; |
2072 | struct kwork_top_stat *stat = &kwork->top_stat; |
2073 | |
2074 | class = get_kwork_class(kwork, type: KWORK_CLASS_SCHED); |
2075 | if (!class) |
2076 | return; |
2077 | |
2078 | next = rb_first_cached(&class->work_root); |
2079 | while (next) { |
2080 | work = rb_entry(next, struct kwork_work, node); |
2081 | |
2082 | if (work->total_runtime == 0) |
2083 | goto next; |
2084 | |
2085 | __set_bit(work->cpu, stat->all_cpus_bitmap); |
2086 | |
2087 | top_subtract_irq_runtime(kwork, work); |
2088 | |
2089 | work->cpu_usage = work->total_runtime * 10000 / |
2090 | stat->cpus_runtime[work->cpu].total; |
2091 | |
2092 | top_calc_idle_time(kwork, work); |
2093 | next: |
2094 | next = rb_next(next); |
2095 | } |
2096 | } |
2097 | |
2098 | static void top_calc_load_runtime(struct perf_kwork *kwork, |
2099 | struct kwork_work *work) |
2100 | { |
2101 | struct kwork_top_stat *stat = &kwork->top_stat; |
2102 | |
2103 | if (work->id != 0) { |
2104 | stat->cpus_runtime[work->cpu].load += work->total_runtime; |
2105 | stat->cpus_runtime[MAX_NR_CPUS].load += work->total_runtime; |
2106 | } |
2107 | } |
2108 | |
2109 | static void top_merge_tasks(struct perf_kwork *kwork) |
2110 | { |
2111 | struct kwork_work *merged_work, *data; |
2112 | struct kwork_class *class; |
2113 | struct rb_node *node; |
2114 | int cpu; |
2115 | struct rb_root_cached merged_root = RB_ROOT_CACHED; |
2116 | |
2117 | class = get_kwork_class(kwork, type: KWORK_CLASS_SCHED); |
2118 | if (!class) |
2119 | return; |
2120 | |
2121 | for (;;) { |
2122 | node = rb_first_cached(&class->work_root); |
2123 | if (!node) |
2124 | break; |
2125 | |
2126 | rb_erase_cached(node, root: &class->work_root); |
2127 | data = rb_entry(node, struct kwork_work, node); |
2128 | |
2129 | if (!profile_name_match(kwork, work: data)) |
2130 | continue; |
2131 | |
2132 | cpu = data->cpu; |
2133 | merged_work = find_work_by_id(root: &merged_root, id: data->id, |
2134 | cpu: data->id == 0 ? cpu : -1); |
2135 | if (!merged_work) { |
2136 | work_insert(root: &merged_root, key: data, sort_list: &kwork->cmp_id); |
2137 | } else { |
2138 | merged_work->total_runtime += data->total_runtime; |
2139 | merged_work->cpu_usage += data->cpu_usage; |
2140 | } |
2141 | |
2142 | top_calc_load_runtime(kwork, work: data); |
2143 | } |
2144 | |
2145 | work_sort(kwork, class, root: &merged_root); |
2146 | } |
2147 | |
2148 | static void perf_kwork__top_report(struct perf_kwork *kwork) |
2149 | { |
2150 | struct kwork_work *work; |
2151 | struct rb_node *next; |
2152 | |
2153 | printf("\n" ); |
2154 | |
2155 | top_print_cpu_usage(kwork); |
2156 | top_print_header(kwork); |
2157 | next = rb_first_cached(&kwork->sorted_work_root); |
2158 | while (next) { |
2159 | work = rb_entry(next, struct kwork_work, node); |
2160 | process_skipped_events(kwork, work); |
2161 | |
2162 | if (work->total_runtime == 0) |
2163 | goto next; |
2164 | |
2165 | top_print_work(kwork, work); |
2166 | |
2167 | next: |
2168 | next = rb_next(next); |
2169 | } |
2170 | |
2171 | printf("\n" ); |
2172 | } |
2173 | |
2174 | static int perf_kwork__top_bpf(struct perf_kwork *kwork) |
2175 | { |
2176 | int ret; |
2177 | |
2178 | signal(SIGINT, sig_handler); |
2179 | signal(SIGTERM, sig_handler); |
2180 | |
2181 | ret = perf_kwork__top_prepare_bpf(kwork); |
2182 | if (ret) |
2183 | return -1; |
2184 | |
2185 | printf("Starting trace, Hit <Ctrl+C> to stop and report\n" ); |
2186 | |
2187 | perf_kwork__top_start(); |
2188 | |
2189 | /* |
2190 | * a simple pause, wait here for stop signal |
2191 | */ |
2192 | pause(); |
2193 | |
2194 | perf_kwork__top_finish(); |
2195 | |
2196 | perf_kwork__top_read_bpf(kwork); |
2197 | |
2198 | perf_kwork__top_cleanup_bpf(); |
2199 | |
2200 | return 0; |
2201 | |
2202 | } |
2203 | |
2204 | static int perf_kwork__top(struct perf_kwork *kwork) |
2205 | { |
2206 | struct __top_cpus_runtime *cpus_runtime; |
2207 | int ret = 0; |
2208 | |
2209 | cpus_runtime = zalloc(sizeof(struct __top_cpus_runtime) * (MAX_NR_CPUS + 1)); |
2210 | if (!cpus_runtime) |
2211 | return -1; |
2212 | |
2213 | kwork->top_stat.cpus_runtime = cpus_runtime; |
2214 | bitmap_zero(kwork->top_stat.all_cpus_bitmap, MAX_NR_CPUS); |
2215 | |
2216 | if (kwork->use_bpf) |
2217 | ret = perf_kwork__top_bpf(kwork); |
2218 | else |
2219 | ret = perf_kwork__read_events(kwork); |
2220 | |
2221 | if (ret) |
2222 | goto out; |
2223 | |
2224 | top_calc_total_runtime(kwork); |
2225 | top_calc_cpu_usage(kwork); |
2226 | top_merge_tasks(kwork); |
2227 | |
2228 | setup_pager(); |
2229 | |
2230 | perf_kwork__top_report(kwork); |
2231 | |
2232 | out: |
2233 | free(kwork->top_stat.cpus_runtime); |
2234 | return ret; |
2235 | } |
2236 | |
2237 | static void setup_event_list(struct perf_kwork *kwork, |
2238 | const struct option *options, |
2239 | const char * const usage_msg[]) |
2240 | { |
2241 | int i; |
2242 | struct kwork_class *class; |
2243 | char *tmp, *tok, *str; |
2244 | |
2245 | /* |
2246 | * set default events list if not specified |
2247 | */ |
2248 | if (kwork->event_list_str == NULL) |
2249 | kwork->event_list_str = "irq, softirq, workqueue" ; |
2250 | |
2251 | str = strdup(kwork->event_list_str); |
2252 | for (tok = strtok_r(str, ", " , &tmp); |
2253 | tok; tok = strtok_r(NULL, ", " , &tmp)) { |
2254 | for (i = 0; i < KWORK_CLASS_MAX; i++) { |
2255 | class = kwork_class_supported_list[i]; |
2256 | if (strcmp(tok, class->name) == 0) { |
2257 | list_add_tail(new: &class->list, head: &kwork->class_list); |
2258 | break; |
2259 | } |
2260 | } |
2261 | if (i == KWORK_CLASS_MAX) { |
2262 | usage_with_options_msg(usage_msg, options, |
2263 | "Unknown --event key: `%s'" , tok); |
2264 | } |
2265 | } |
2266 | free(str); |
2267 | |
2268 | pr_debug("Config event list:" ); |
2269 | list_for_each_entry(class, &kwork->class_list, list) |
2270 | pr_debug(" %s" , class->name); |
2271 | pr_debug("\n" ); |
2272 | } |
2273 | |
2274 | static int perf_kwork__record(struct perf_kwork *kwork, |
2275 | int argc, const char **argv) |
2276 | { |
2277 | const char **rec_argv; |
2278 | unsigned int rec_argc, i, j; |
2279 | struct kwork_class *class; |
2280 | |
2281 | const char *const record_args[] = { |
2282 | "record" , |
2283 | "-a" , |
2284 | "-R" , |
2285 | "-m" , "1024" , |
2286 | "-c" , "1" , |
2287 | }; |
2288 | |
2289 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; |
2290 | |
2291 | list_for_each_entry(class, &kwork->class_list, list) |
2292 | rec_argc += 2 * class->nr_tracepoints; |
2293 | |
2294 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); |
2295 | if (rec_argv == NULL) |
2296 | return -ENOMEM; |
2297 | |
2298 | for (i = 0; i < ARRAY_SIZE(record_args); i++) |
2299 | rec_argv[i] = strdup(record_args[i]); |
2300 | |
2301 | list_for_each_entry(class, &kwork->class_list, list) { |
2302 | for (j = 0; j < class->nr_tracepoints; j++) { |
2303 | rec_argv[i++] = strdup("-e" ); |
2304 | rec_argv[i++] = strdup(class->tp_handlers[j].name); |
2305 | } |
2306 | } |
2307 | |
2308 | for (j = 1; j < (unsigned int)argc; j++, i++) |
2309 | rec_argv[i] = argv[j]; |
2310 | |
2311 | BUG_ON(i != rec_argc); |
2312 | |
2313 | pr_debug("record comm: " ); |
2314 | for (j = 0; j < rec_argc; j++) |
2315 | pr_debug("%s " , rec_argv[j]); |
2316 | pr_debug("\n" ); |
2317 | |
2318 | return cmd_record(argc: i, argv: rec_argv); |
2319 | } |
2320 | |
2321 | int cmd_kwork(int argc, const char **argv) |
2322 | { |
2323 | static struct perf_kwork kwork = { |
2324 | .class_list = LIST_HEAD_INIT(kwork.class_list), |
2325 | .tool = { |
2326 | .mmap = perf_event__process_mmap, |
2327 | .mmap2 = perf_event__process_mmap2, |
2328 | .sample = perf_kwork__process_tracepoint_sample, |
2329 | .ordered_events = true, |
2330 | }, |
2331 | .atom_page_list = LIST_HEAD_INIT(kwork.atom_page_list), |
2332 | .sort_list = LIST_HEAD_INIT(kwork.sort_list), |
2333 | .cmp_id = LIST_HEAD_INIT(kwork.cmp_id), |
2334 | .sorted_work_root = RB_ROOT_CACHED, |
2335 | .tp_handler = NULL, |
2336 | .profile_name = NULL, |
2337 | .cpu_list = NULL, |
2338 | .time_str = NULL, |
2339 | .force = false, |
2340 | .event_list_str = NULL, |
2341 | .summary = false, |
2342 | .sort_order = NULL, |
2343 | .show_callchain = false, |
2344 | .max_stack = 5, |
2345 | .timestart = 0, |
2346 | .timeend = 0, |
2347 | .nr_events = 0, |
2348 | .nr_lost_chunks = 0, |
2349 | .nr_lost_events = 0, |
2350 | .all_runtime = 0, |
2351 | .all_count = 0, |
2352 | .nr_skipped_events = { 0 }, |
2353 | }; |
2354 | static const char default_report_sort_order[] = "runtime, max, count" ; |
2355 | static const char default_latency_sort_order[] = "avg, max, count" ; |
2356 | static const char default_top_sort_order[] = "rate, runtime" ; |
2357 | const struct option kwork_options[] = { |
2358 | OPT_INCR('v', "verbose" , &verbose, |
2359 | "be more verbose (show symbol address, etc)" ), |
2360 | OPT_BOOLEAN('D', "dump-raw-trace" , &dump_trace, |
2361 | "dump raw trace in ASCII" ), |
2362 | OPT_STRING('k', "kwork" , &kwork.event_list_str, "kwork" , |
2363 | "list of kwork to profile (irq, softirq, workqueue, sched, etc)" ), |
2364 | OPT_BOOLEAN('f', "force" , &kwork.force, "don't complain, do it" ), |
2365 | OPT_END() |
2366 | }; |
2367 | const struct option report_options[] = { |
2368 | OPT_STRING('s', "sort" , &kwork.sort_order, "key[,key2...]" , |
2369 | "sort by key(s): runtime, max, count" ), |
2370 | OPT_STRING('C', "cpu" , &kwork.cpu_list, "cpu" , |
2371 | "list of cpus to profile" ), |
2372 | OPT_STRING('n', "name" , &kwork.profile_name, "name" , |
2373 | "event name to profile" ), |
2374 | OPT_STRING(0, "time" , &kwork.time_str, "str" , |
2375 | "Time span for analysis (start,stop)" ), |
2376 | OPT_STRING('i', "input" , &input_name, "file" , |
2377 | "input file name" ), |
2378 | OPT_BOOLEAN('S', "with-summary" , &kwork.summary, |
2379 | "Show summary with statistics" ), |
2380 | #ifdef HAVE_BPF_SKEL |
2381 | OPT_BOOLEAN('b', "use-bpf" , &kwork.use_bpf, |
2382 | "Use BPF to measure kwork runtime" ), |
2383 | #endif |
2384 | OPT_PARENT(kwork_options) |
2385 | }; |
2386 | const struct option latency_options[] = { |
2387 | OPT_STRING('s', "sort" , &kwork.sort_order, "key[,key2...]" , |
2388 | "sort by key(s): avg, max, count" ), |
2389 | OPT_STRING('C', "cpu" , &kwork.cpu_list, "cpu" , |
2390 | "list of cpus to profile" ), |
2391 | OPT_STRING('n', "name" , &kwork.profile_name, "name" , |
2392 | "event name to profile" ), |
2393 | OPT_STRING(0, "time" , &kwork.time_str, "str" , |
2394 | "Time span for analysis (start,stop)" ), |
2395 | OPT_STRING('i', "input" , &input_name, "file" , |
2396 | "input file name" ), |
2397 | #ifdef HAVE_BPF_SKEL |
2398 | OPT_BOOLEAN('b', "use-bpf" , &kwork.use_bpf, |
2399 | "Use BPF to measure kwork latency" ), |
2400 | #endif |
2401 | OPT_PARENT(kwork_options) |
2402 | }; |
2403 | const struct option timehist_options[] = { |
2404 | OPT_STRING('k', "vmlinux" , &symbol_conf.vmlinux_name, |
2405 | "file" , "vmlinux pathname" ), |
2406 | OPT_STRING(0, "kallsyms" , &symbol_conf.kallsyms_name, |
2407 | "file" , "kallsyms pathname" ), |
2408 | OPT_BOOLEAN('g', "call-graph" , &kwork.show_callchain, |
2409 | "Display call chains if present" ), |
2410 | OPT_UINTEGER(0, "max-stack" , &kwork.max_stack, |
2411 | "Maximum number of functions to display backtrace." ), |
2412 | OPT_STRING(0, "symfs" , &symbol_conf.symfs, "directory" , |
2413 | "Look for files with symbols relative to this directory" ), |
2414 | OPT_STRING(0, "time" , &kwork.time_str, "str" , |
2415 | "Time span for analysis (start,stop)" ), |
2416 | OPT_STRING('C', "cpu" , &kwork.cpu_list, "cpu" , |
2417 | "list of cpus to profile" ), |
2418 | OPT_STRING('n', "name" , &kwork.profile_name, "name" , |
2419 | "event name to profile" ), |
2420 | OPT_STRING('i', "input" , &input_name, "file" , |
2421 | "input file name" ), |
2422 | OPT_PARENT(kwork_options) |
2423 | }; |
2424 | const struct option top_options[] = { |
2425 | OPT_STRING('s', "sort" , &kwork.sort_order, "key[,key2...]" , |
2426 | "sort by key(s): rate, runtime, tid" ), |
2427 | OPT_STRING('C', "cpu" , &kwork.cpu_list, "cpu" , |
2428 | "list of cpus to profile" ), |
2429 | OPT_STRING('n', "name" , &kwork.profile_name, "name" , |
2430 | "event name to profile" ), |
2431 | OPT_STRING(0, "time" , &kwork.time_str, "str" , |
2432 | "Time span for analysis (start,stop)" ), |
2433 | OPT_STRING('i', "input" , &input_name, "file" , |
2434 | "input file name" ), |
2435 | #ifdef HAVE_BPF_SKEL |
2436 | OPT_BOOLEAN('b', "use-bpf" , &kwork.use_bpf, |
2437 | "Use BPF to measure task cpu usage" ), |
2438 | #endif |
2439 | OPT_PARENT(kwork_options) |
2440 | }; |
2441 | const char *kwork_usage[] = { |
2442 | NULL, |
2443 | NULL |
2444 | }; |
2445 | const char * const report_usage[] = { |
2446 | "perf kwork report [<options>]" , |
2447 | NULL |
2448 | }; |
2449 | const char * const latency_usage[] = { |
2450 | "perf kwork latency [<options>]" , |
2451 | NULL |
2452 | }; |
2453 | const char * const timehist_usage[] = { |
2454 | "perf kwork timehist [<options>]" , |
2455 | NULL |
2456 | }; |
2457 | const char * const top_usage[] = { |
2458 | "perf kwork top [<options>]" , |
2459 | NULL |
2460 | }; |
2461 | const char *const kwork_subcommands[] = { |
2462 | "record" , "report" , "latency" , "timehist" , "top" , NULL |
2463 | }; |
2464 | |
2465 | argc = parse_options_subcommand(argc, argv, kwork_options, |
2466 | kwork_subcommands, kwork_usage, |
2467 | PARSE_OPT_STOP_AT_NON_OPTION); |
2468 | if (!argc) |
2469 | usage_with_options(kwork_usage, kwork_options); |
2470 | |
2471 | sort_dimension__add(kwork: &kwork, tok: "id" , list: &kwork.cmp_id); |
2472 | |
2473 | if (strlen(argv[0]) > 2 && strstarts(str: "record" , prefix: argv[0])) { |
2474 | setup_event_list(kwork: &kwork, options: kwork_options, usage_msg: kwork_usage); |
2475 | return perf_kwork__record(kwork: &kwork, argc, argv); |
2476 | } else if (strlen(argv[0]) > 2 && strstarts(str: "report" , prefix: argv[0])) { |
2477 | kwork.sort_order = default_report_sort_order; |
2478 | if (argc > 1) { |
2479 | argc = parse_options(argc, argv, report_options, report_usage, 0); |
2480 | if (argc) |
2481 | usage_with_options(report_usage, report_options); |
2482 | } |
2483 | kwork.report = KWORK_REPORT_RUNTIME; |
2484 | setup_sorting(kwork: &kwork, options: report_options, usage_msg: report_usage); |
2485 | setup_event_list(kwork: &kwork, options: kwork_options, usage_msg: kwork_usage); |
2486 | return perf_kwork__report(kwork: &kwork); |
2487 | } else if (strlen(argv[0]) > 2 && strstarts(str: "latency" , prefix: argv[0])) { |
2488 | kwork.sort_order = default_latency_sort_order; |
2489 | if (argc > 1) { |
2490 | argc = parse_options(argc, argv, latency_options, latency_usage, 0); |
2491 | if (argc) |
2492 | usage_with_options(latency_usage, latency_options); |
2493 | } |
2494 | kwork.report = KWORK_REPORT_LATENCY; |
2495 | setup_sorting(kwork: &kwork, options: latency_options, usage_msg: latency_usage); |
2496 | setup_event_list(kwork: &kwork, options: kwork_options, usage_msg: kwork_usage); |
2497 | return perf_kwork__report(kwork: &kwork); |
2498 | } else if (strlen(argv[0]) > 2 && strstarts(str: "timehist" , prefix: argv[0])) { |
2499 | if (argc > 1) { |
2500 | argc = parse_options(argc, argv, timehist_options, timehist_usage, 0); |
2501 | if (argc) |
2502 | usage_with_options(timehist_usage, timehist_options); |
2503 | } |
2504 | kwork.report = KWORK_REPORT_TIMEHIST; |
2505 | setup_event_list(kwork: &kwork, options: kwork_options, usage_msg: kwork_usage); |
2506 | return perf_kwork__timehist(kwork: &kwork); |
2507 | } else if (strlen(argv[0]) > 2 && strstarts(str: "top" , prefix: argv[0])) { |
2508 | kwork.sort_order = default_top_sort_order; |
2509 | if (argc > 1) { |
2510 | argc = parse_options(argc, argv, top_options, top_usage, 0); |
2511 | if (argc) |
2512 | usage_with_options(top_usage, top_options); |
2513 | } |
2514 | kwork.report = KWORK_REPORT_TOP; |
2515 | if (!kwork.event_list_str) |
2516 | kwork.event_list_str = "sched, irq, softirq" ; |
2517 | setup_event_list(kwork: &kwork, options: kwork_options, usage_msg: kwork_usage); |
2518 | setup_sorting(kwork: &kwork, options: top_options, usage_msg: top_usage); |
2519 | return perf_kwork__top(kwork: &kwork); |
2520 | } else |
2521 | usage_with_options(kwork_usage, kwork_options); |
2522 | |
2523 | return 0; |
2524 | } |
2525 | |