1
2
3
4
5
6
7
8#include "metricgroup.h"
9#include "evlist.h"
10#include "strbuf.h"
11#include "pmu.h"
12#include "expr.h"
13#include "rblist.h"
14#include <string.h>
15#include <stdbool.h>
16#include <errno.h>
17#include "pmu-events/pmu-events.h"
18#include "strlist.h"
19#include <assert.h>
20#include <linux/ctype.h>
21#include <linux/zalloc.h>
22
23struct metric_event *metricgroup__lookup(struct rblist *metric_events,
24 struct perf_evsel *evsel,
25 bool create)
26{
27 struct rb_node *nd;
28 struct metric_event me = {
29 .evsel = evsel
30 };
31
32 if (!metric_events)
33 return NULL;
34
35 nd = rblist__find(metric_events, &me);
36 if (nd)
37 return container_of(nd, struct metric_event, nd);
38 if (create) {
39 rblist__add_node(metric_events, &me);
40 nd = rblist__find(metric_events, &me);
41 if (nd)
42 return container_of(nd, struct metric_event, nd);
43 }
44 return NULL;
45}
46
47static int metric_event_cmp(struct rb_node *rb_node, const void *entry)
48{
49 struct metric_event *a = container_of(rb_node,
50 struct metric_event,
51 nd);
52 const struct metric_event *b = entry;
53
54 if (a->evsel == b->evsel)
55 return 0;
56 if ((char *)a->evsel < (char *)b->evsel)
57 return -1;
58 return +1;
59}
60
61static struct rb_node *metric_event_new(struct rblist *rblist __maybe_unused,
62 const void *entry)
63{
64 struct metric_event *me = malloc(sizeof(struct metric_event));
65
66 if (!me)
67 return NULL;
68 memcpy(me, entry, sizeof(struct metric_event));
69 me->evsel = ((struct metric_event *)entry)->evsel;
70 INIT_LIST_HEAD(&me->head);
71 return &me->nd;
72}
73
74static void metricgroup__rblist_init(struct rblist *metric_events)
75{
76 rblist__init(metric_events);
77 metric_events->node_cmp = metric_event_cmp;
78 metric_events->node_new = metric_event_new;
79}
80
81struct egroup {
82 struct list_head nd;
83 int idnum;
84 const char **ids;
85 const char *metric_name;
86 const char *metric_expr;
87};
88
89static bool record_evsel(int *ind, struct perf_evsel **start,
90 int idnum,
91 struct perf_evsel **metric_events,
92 struct perf_evsel *ev)
93{
94 metric_events[*ind] = ev;
95 if (*ind == 0)
96 *start = ev;
97 if (++*ind == idnum) {
98 metric_events[*ind] = NULL;
99 return true;
100 }
101 return false;
102}
103
104static struct perf_evsel *find_evsel_group(struct perf_evlist *perf_evlist,
105 const char **ids,
106 int idnum,
107 struct perf_evsel **metric_events)
108{
109 struct perf_evsel *ev, *start = NULL;
110 int ind = 0;
111
112 evlist__for_each_entry (perf_evlist, ev) {
113 if (ev->collect_stat)
114 continue;
115 if (!strcmp(ev->name, ids[ind])) {
116 if (record_evsel(&ind, &start, idnum,
117 metric_events, ev))
118 return start;
119 } else {
120
121
122
123
124
125 ind = 0;
126 start = NULL;
127 if (!strcmp(ev->name, ids[ind])) {
128 if (record_evsel(&ind, &start, idnum,
129 metric_events, ev))
130 return start;
131 }
132 }
133 }
134
135
136
137
138
139 return NULL;
140}
141
142static int metricgroup__setup_events(struct list_head *groups,
143 struct perf_evlist *perf_evlist,
144 struct rblist *metric_events_list)
145{
146 struct metric_event *me;
147 struct metric_expr *expr;
148 int i = 0;
149 int ret = 0;
150 struct egroup *eg;
151 struct perf_evsel *evsel;
152
153 list_for_each_entry (eg, groups, nd) {
154 struct perf_evsel **metric_events;
155
156 metric_events = calloc(sizeof(void *), eg->idnum + 1);
157 if (!metric_events) {
158 ret = -ENOMEM;
159 break;
160 }
161 evsel = find_evsel_group(perf_evlist, eg->ids, eg->idnum,
162 metric_events);
163 if (!evsel) {
164 pr_debug("Cannot resolve %s: %s\n",
165 eg->metric_name, eg->metric_expr);
166 continue;
167 }
168 for (i = 0; i < eg->idnum; i++)
169 metric_events[i]->collect_stat = true;
170 me = metricgroup__lookup(metric_events_list, evsel, true);
171 if (!me) {
172 ret = -ENOMEM;
173 break;
174 }
175 expr = malloc(sizeof(struct metric_expr));
176 if (!expr) {
177 ret = -ENOMEM;
178 break;
179 }
180 expr->metric_expr = eg->metric_expr;
181 expr->metric_name = eg->metric_name;
182 expr->metric_events = metric_events;
183 list_add(&expr->nd, &me->head);
184 }
185 return ret;
186}
187
188static bool match_metric(const char *n, const char *list)
189{
190 int len;
191 char *m;
192
193 if (!list)
194 return false;
195 if (!strcmp(list, "all"))
196 return true;
197 if (!n)
198 return !strcasecmp(list, "No_group");
199 len = strlen(list);
200 m = strcasestr(n, list);
201 if (!m)
202 return false;
203 if ((m == n || m[-1] == ';' || m[-1] == ' ') &&
204 (m[len] == 0 || m[len] == ';'))
205 return true;
206 return false;
207}
208
209struct mep {
210 struct rb_node nd;
211 const char *name;
212 struct strlist *metrics;
213};
214
215static int mep_cmp(struct rb_node *rb_node, const void *entry)
216{
217 struct mep *a = container_of(rb_node, struct mep, nd);
218 struct mep *b = (struct mep *)entry;
219
220 return strcmp(a->name, b->name);
221}
222
223static struct rb_node *mep_new(struct rblist *rl __maybe_unused,
224 const void *entry)
225{
226 struct mep *me = malloc(sizeof(struct mep));
227
228 if (!me)
229 return NULL;
230 memcpy(me, entry, sizeof(struct mep));
231 me->name = strdup(me->name);
232 if (!me->name)
233 goto out_me;
234 me->metrics = strlist__new(NULL, NULL);
235 if (!me->metrics)
236 goto out_name;
237 return &me->nd;
238out_name:
239 zfree(&me->name);
240out_me:
241 free(me);
242 return NULL;
243}
244
245static struct mep *mep_lookup(struct rblist *groups, const char *name)
246{
247 struct rb_node *nd;
248 struct mep me = {
249 .name = name
250 };
251 nd = rblist__find(groups, &me);
252 if (nd)
253 return container_of(nd, struct mep, nd);
254 rblist__add_node(groups, &me);
255 nd = rblist__find(groups, &me);
256 if (nd)
257 return container_of(nd, struct mep, nd);
258 return NULL;
259}
260
261static void mep_delete(struct rblist *rl __maybe_unused,
262 struct rb_node *nd)
263{
264 struct mep *me = container_of(nd, struct mep, nd);
265
266 strlist__delete(me->metrics);
267 zfree(&me->name);
268 free(me);
269}
270
271static void metricgroup__print_strlist(struct strlist *metrics, bool raw)
272{
273 struct str_node *sn;
274 int n = 0;
275
276 strlist__for_each_entry (sn, metrics) {
277 if (raw)
278 printf("%s%s", n > 0 ? " " : "", sn->s);
279 else
280 printf(" %s\n", sn->s);
281 n++;
282 }
283 if (raw)
284 putchar('\n');
285}
286
287void metricgroup__print(bool metrics, bool metricgroups, char *filter,
288 bool raw, bool details)
289{
290 struct pmu_events_map *map = perf_pmu__find_map(NULL);
291 struct pmu_event *pe;
292 int i;
293 struct rblist groups;
294 struct rb_node *node, *next;
295 struct strlist *metriclist = NULL;
296
297 if (!map)
298 return;
299
300 if (!metricgroups) {
301 metriclist = strlist__new(NULL, NULL);
302 if (!metriclist)
303 return;
304 }
305
306 rblist__init(&groups);
307 groups.node_new = mep_new;
308 groups.node_cmp = mep_cmp;
309 groups.node_delete = mep_delete;
310 for (i = 0; ; i++) {
311 const char *g;
312 pe = &map->table[i];
313
314 if (!pe->name && !pe->metric_group && !pe->metric_name)
315 break;
316 if (!pe->metric_expr)
317 continue;
318 g = pe->metric_group;
319 if (!g && pe->metric_name) {
320 if (pe->name)
321 continue;
322 g = "No_group";
323 }
324 if (g) {
325 char *omg;
326 char *mg = strdup(g);
327
328 if (!mg)
329 return;
330 omg = mg;
331 while ((g = strsep(&mg, ";")) != NULL) {
332 struct mep *me;
333 char *s;
334
335 g = skip_spaces(g);
336 if (*g == 0)
337 g = "No_group";
338 if (filter && !strstr(g, filter))
339 continue;
340 if (raw)
341 s = (char *)pe->metric_name;
342 else {
343 if (asprintf(&s, "%s\n%*s%s]",
344 pe->metric_name, 8, "[", pe->desc) < 0)
345 return;
346
347 if (details) {
348 if (asprintf(&s, "%s\n%*s%s]",
349 s, 8, "[", pe->metric_expr) < 0)
350 return;
351 }
352 }
353
354 if (!s)
355 continue;
356
357 if (!metricgroups) {
358 strlist__add(metriclist, s);
359 } else {
360 me = mep_lookup(&groups, g);
361 if (!me)
362 continue;
363 strlist__add(me->metrics, s);
364 }
365 }
366 free(omg);
367 }
368 }
369
370 if (metricgroups && !raw)
371 printf("\nMetric Groups:\n\n");
372 else if (metrics && !raw)
373 printf("\nMetrics:\n\n");
374
375 for (node = rb_first_cached(&groups.entries); node; node = next) {
376 struct mep *me = container_of(node, struct mep, nd);
377
378 if (metricgroups)
379 printf("%s%s%s", me->name, metrics && !raw ? ":" : "", raw ? " " : "\n");
380 if (metrics)
381 metricgroup__print_strlist(me->metrics, raw);
382 next = rb_next(node);
383 rblist__remove_node(&groups, node);
384 }
385 if (!metricgroups)
386 metricgroup__print_strlist(metriclist, raw);
387 strlist__delete(metriclist);
388}
389
390static int metricgroup__add_metric(const char *metric, struct strbuf *events,
391 struct list_head *group_list)
392{
393 struct pmu_events_map *map = perf_pmu__find_map(NULL);
394 struct pmu_event *pe;
395 int ret = -EINVAL;
396 int i, j;
397
398 if (!map)
399 return 0;
400
401 for (i = 0; ; i++) {
402 pe = &map->table[i];
403
404 if (!pe->name && !pe->metric_group && !pe->metric_name)
405 break;
406 if (!pe->metric_expr)
407 continue;
408 if (match_metric(pe->metric_group, metric) ||
409 match_metric(pe->metric_name, metric)) {
410 const char **ids;
411 int idnum;
412 struct egroup *eg;
413 bool no_group = false;
414
415 pr_debug("metric expr %s for %s\n", pe->metric_expr, pe->metric_name);
416
417 if (expr__find_other(pe->metric_expr,
418 NULL, &ids, &idnum) < 0)
419 continue;
420 if (events->len > 0)
421 strbuf_addf(events, ",");
422 for (j = 0; j < idnum; j++) {
423 pr_debug("found event %s\n", ids[j]);
424
425
426
427
428
429 if (!strcmp(ids[j], "duration_time")) {
430 if (j > 0)
431 strbuf_addf(events, "}:W,");
432 strbuf_addf(events, "duration_time");
433 no_group = true;
434 continue;
435 }
436 strbuf_addf(events, "%s%s",
437 j == 0 || no_group ? "{" : ",",
438 ids[j]);
439 no_group = false;
440 }
441 if (!no_group)
442 strbuf_addf(events, "}:W");
443
444 eg = malloc(sizeof(struct egroup));
445 if (!eg) {
446 ret = -ENOMEM;
447 break;
448 }
449 eg->ids = ids;
450 eg->idnum = idnum;
451 eg->metric_name = pe->metric_name;
452 eg->metric_expr = pe->metric_expr;
453 list_add_tail(&eg->nd, group_list);
454 ret = 0;
455 }
456 }
457 return ret;
458}
459
460static int metricgroup__add_metric_list(const char *list, struct strbuf *events,
461 struct list_head *group_list)
462{
463 char *llist, *nlist, *p;
464 int ret = -EINVAL;
465
466 nlist = strdup(list);
467 if (!nlist)
468 return -ENOMEM;
469 llist = nlist;
470
471 strbuf_init(events, 100);
472 strbuf_addf(events, "%s", "");
473
474 while ((p = strsep(&llist, ",")) != NULL) {
475 ret = metricgroup__add_metric(p, events, group_list);
476 if (ret == -EINVAL) {
477 fprintf(stderr, "Cannot find metric or group `%s'\n",
478 p);
479 break;
480 }
481 }
482 free(nlist);
483 return ret;
484}
485
486static void metricgroup__free_egroups(struct list_head *group_list)
487{
488 struct egroup *eg, *egtmp;
489 int i;
490
491 list_for_each_entry_safe (eg, egtmp, group_list, nd) {
492 for (i = 0; i < eg->idnum; i++)
493 zfree(&eg->ids[i]);
494 zfree(&eg->ids);
495 list_del_init(&eg->nd);
496 free(eg);
497 }
498}
499
500int metricgroup__parse_groups(const struct option *opt,
501 const char *str,
502 struct rblist *metric_events)
503{
504 struct parse_events_error parse_error;
505 struct perf_evlist *perf_evlist = *(struct perf_evlist **)opt->value;
506 struct strbuf extra_events;
507 LIST_HEAD(group_list);
508 int ret;
509
510 if (metric_events->nr_entries == 0)
511 metricgroup__rblist_init(metric_events);
512 ret = metricgroup__add_metric_list(str, &extra_events, &group_list);
513 if (ret)
514 return ret;
515 pr_debug("adding %s\n", extra_events.buf);
516 memset(&parse_error, 0, sizeof(struct parse_events_error));
517 ret = parse_events(perf_evlist, extra_events.buf, &parse_error);
518 if (ret) {
519 parse_events_print_error(&parse_error, extra_events.buf);
520 goto out;
521 }
522 strbuf_release(&extra_events);
523 ret = metricgroup__setup_events(&group_list, perf_evlist,
524 metric_events);
525out:
526 metricgroup__free_egroups(&group_list);
527 return ret;
528}
529
530bool metricgroup__has_metric(const char *metric)
531{
532 struct pmu_events_map *map = perf_pmu__find_map(NULL);
533 struct pmu_event *pe;
534 int i;
535
536 if (!map)
537 return false;
538
539 for (i = 0; ; i++) {
540 pe = &map->table[i];
541
542 if (!pe->name && !pe->metric_group && !pe->metric_name)
543 break;
544 if (!pe->metric_expr)
545 continue;
546 if (match_metric(pe->metric_name, metric))
547 return true;
548 }
549 return false;
550}
551
