| 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 2 | /* |
| 3 | * Copyright (c) 2017, Intel Corporation. |
| 4 | */ |
| 5 | |
| 6 | /* Manage metrics and groups of metrics from JSON files */ |
| 7 | |
| 8 | #include "metricgroup.h" |
| 9 | #include "debug.h" |
| 10 | #include "evlist.h" |
| 11 | #include "evsel.h" |
| 12 | #include "strbuf.h" |
| 13 | #include "pmu.h" |
| 14 | #include "pmus.h" |
| 15 | #include "print-events.h" |
| 16 | #include "smt.h" |
| 17 | #include "expr.h" |
| 18 | #include "rblist.h" |
| 19 | #include <string.h> |
| 20 | #include <errno.h> |
| 21 | #include "strlist.h" |
| 22 | #include <assert.h> |
| 23 | #include <linux/ctype.h> |
| 24 | #include <linux/list_sort.h> |
| 25 | #include <linux/string.h> |
| 26 | #include <linux/zalloc.h> |
| 27 | #include <perf/cpumap.h> |
| 28 | #include <subcmd/parse-options.h> |
| 29 | #include <api/fs/fs.h> |
| 30 | #include "util.h" |
| 31 | #include <asm/bug.h> |
| 32 | #include "cgroup.h" |
| 33 | #include "util/hashmap.h" |
| 34 | |
| 35 | struct metric_event *metricgroup__lookup(struct rblist *metric_events, |
| 36 | struct evsel *evsel, |
| 37 | bool create) |
| 38 | { |
| 39 | struct rb_node *nd; |
| 40 | struct metric_event me = { |
| 41 | .evsel = evsel |
| 42 | }; |
| 43 | |
| 44 | if (!metric_events) |
| 45 | return NULL; |
| 46 | |
| 47 | if (evsel && evsel->metric_leader) |
| 48 | me.evsel = evsel->metric_leader; |
| 49 | nd = rblist__find(metric_events, &me); |
| 50 | if (nd) |
| 51 | return container_of(nd, struct metric_event, nd); |
| 52 | if (create) { |
| 53 | rblist__add_node(metric_events, &me); |
| 54 | nd = rblist__find(metric_events, &me); |
| 55 | if (nd) |
| 56 | return container_of(nd, struct metric_event, nd); |
| 57 | } |
| 58 | return NULL; |
| 59 | } |
| 60 | |
| 61 | static int metric_event_cmp(struct rb_node *rb_node, const void *entry) |
| 62 | { |
| 63 | struct metric_event *a = container_of(rb_node, |
| 64 | struct metric_event, |
| 65 | nd); |
| 66 | const struct metric_event *b = entry; |
| 67 | |
| 68 | if (a->evsel == b->evsel) |
| 69 | return 0; |
| 70 | if ((char *)a->evsel < (char *)b->evsel) |
| 71 | return -1; |
| 72 | return +1; |
| 73 | } |
| 74 | |
| 75 | static struct rb_node *metric_event_new(struct rblist *rblist __maybe_unused, |
| 76 | const void *entry) |
| 77 | { |
| 78 | struct metric_event *me = malloc(sizeof(struct metric_event)); |
| 79 | |
| 80 | if (!me) |
| 81 | return NULL; |
| 82 | memcpy(me, entry, sizeof(struct metric_event)); |
| 83 | me->evsel = ((struct metric_event *)entry)->evsel; |
| 84 | me->is_default = false; |
| 85 | INIT_LIST_HEAD(&me->head); |
| 86 | return &me->nd; |
| 87 | } |
| 88 | |
| 89 | static void metric_event_delete(struct rblist *rblist __maybe_unused, |
| 90 | struct rb_node *rb_node) |
| 91 | { |
| 92 | struct metric_event *me = container_of(rb_node, struct metric_event, nd); |
| 93 | struct metric_expr *expr, *tmp; |
| 94 | |
| 95 | list_for_each_entry_safe(expr, tmp, &me->head, nd) { |
| 96 | zfree(&expr->metric_name); |
| 97 | zfree(&expr->metric_refs); |
| 98 | zfree(&expr->metric_events); |
| 99 | free(expr); |
| 100 | } |
| 101 | |
| 102 | free(me); |
| 103 | } |
| 104 | |
| 105 | static void metricgroup__rblist_init(struct rblist *metric_events) |
| 106 | { |
| 107 | rblist__init(metric_events); |
| 108 | metric_events->node_cmp = metric_event_cmp; |
| 109 | metric_events->node_new = metric_event_new; |
| 110 | metric_events->node_delete = metric_event_delete; |
| 111 | } |
| 112 | |
| 113 | void metricgroup__rblist_exit(struct rblist *metric_events) |
| 114 | { |
| 115 | rblist__exit(metric_events); |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * The metric under construction. The data held here will be placed in a |
| 120 | * metric_expr. |
| 121 | */ |
| 122 | struct metric { |
| 123 | struct list_head nd; |
| 124 | /** |
| 125 | * The expression parse context importantly holding the IDs contained |
| 126 | * within the expression. |
| 127 | */ |
| 128 | struct expr_parse_ctx *pctx; |
| 129 | const char *pmu; |
| 130 | /** The name of the metric such as "IPC". */ |
| 131 | const char *metric_name; |
| 132 | /** Modifier on the metric such as "u" or NULL for none. */ |
| 133 | const char *modifier; |
| 134 | /** The expression to parse, for example, "instructions/cycles". */ |
| 135 | const char *metric_expr; |
| 136 | /** Optional threshold expression where zero value is green, otherwise red. */ |
| 137 | const char *metric_threshold; |
| 138 | /** |
| 139 | * The "ScaleUnit" that scales and adds a unit to the metric during |
| 140 | * output. |
| 141 | */ |
| 142 | const char *metric_unit; |
| 143 | /** |
| 144 | * Optional name of the metric group reported |
| 145 | * if the Default metric group is being processed. |
| 146 | */ |
| 147 | const char *default_metricgroup_name; |
| 148 | /** Optional null terminated array of referenced metrics. */ |
| 149 | struct metric_ref *metric_refs; |
| 150 | /** |
| 151 | * Should events of the metric be grouped? |
| 152 | */ |
| 153 | bool group_events; |
| 154 | /** |
| 155 | * Parsed events for the metric. Optional as events may be taken from a |
| 156 | * different metric whose group contains all the IDs necessary for this |
| 157 | * one. |
| 158 | */ |
| 159 | struct evlist *evlist; |
| 160 | }; |
| 161 | |
| 162 | static void metric__watchdog_constraint_hint(const char *name, bool foot) |
| 163 | { |
| 164 | static bool violate_nmi_constraint; |
| 165 | |
| 166 | if (!foot) { |
| 167 | pr_warning("Not grouping metric %s's events.\n", name); |
| 168 | violate_nmi_constraint = true; |
| 169 | return; |
| 170 | } |
| 171 | |
| 172 | if (!violate_nmi_constraint) |
| 173 | return; |
| 174 | |
| 175 | pr_warning("Try disabling the NMI watchdog to comply NO_NMI_WATCHDOG metric constraint:\n" |
| 176 | " echo 0 > /proc/sys/kernel/nmi_watchdog\n" |
| 177 | " perf stat ...\n" |
| 178 | " echo 1 > /proc/sys/kernel/nmi_watchdog\n"); |
| 179 | } |
| 180 | |
| 181 | static bool metric__group_events(const struct pmu_metric *pm) |
| 182 | { |
| 183 | switch (pm->event_grouping) { |
| 184 | case MetricNoGroupEvents: |
| 185 | return false; |
| 186 | case MetricNoGroupEventsNmi: |
| 187 | if (!sysctl__nmi_watchdog_enabled()) |
| 188 | return true; |
| 189 | metric__watchdog_constraint_hint(pm->metric_name, /*foot=*/false); |
| 190 | return false; |
| 191 | case MetricNoGroupEventsSmt: |
| 192 | return !smt_on(); |
| 193 | case MetricGroupEvents: |
| 194 | default: |
| 195 | return true; |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | static void metric__free(struct metric *m) |
| 200 | { |
| 201 | if (!m) |
| 202 | return; |
| 203 | |
| 204 | zfree(&m->metric_refs); |
| 205 | expr__ctx_free(m->pctx); |
| 206 | zfree(&m->modifier); |
| 207 | evlist__delete(m->evlist); |
| 208 | free(m); |
| 209 | } |
| 210 | |
| 211 | static struct metric *metric__new(const struct pmu_metric *pm, |
| 212 | const char *modifier, |
| 213 | bool metric_no_group, |
| 214 | int runtime, |
| 215 | const char *user_requested_cpu_list, |
| 216 | bool system_wide) |
| 217 | { |
| 218 | struct metric *m; |
| 219 | |
| 220 | m = zalloc(sizeof(*m)); |
| 221 | if (!m) |
| 222 | return NULL; |
| 223 | |
| 224 | m->pctx = expr__ctx_new(); |
| 225 | if (!m->pctx) |
| 226 | goto out_err; |
| 227 | |
| 228 | m->pmu = pm->pmu ?: "cpu"; |
| 229 | m->metric_name = pm->metric_name; |
| 230 | m->default_metricgroup_name = pm->default_metricgroup_name ?: ""; |
| 231 | m->modifier = NULL; |
| 232 | if (modifier) { |
| 233 | m->modifier = strdup(modifier); |
| 234 | if (!m->modifier) |
| 235 | goto out_err; |
| 236 | } |
| 237 | m->metric_expr = pm->metric_expr; |
| 238 | m->metric_threshold = pm->metric_threshold; |
| 239 | m->metric_unit = pm->unit; |
| 240 | m->pctx->sctx.user_requested_cpu_list = NULL; |
| 241 | if (user_requested_cpu_list) { |
| 242 | m->pctx->sctx.user_requested_cpu_list = strdup(user_requested_cpu_list); |
| 243 | if (!m->pctx->sctx.user_requested_cpu_list) |
| 244 | goto out_err; |
| 245 | } |
| 246 | m->pctx->sctx.runtime = runtime; |
| 247 | m->pctx->sctx.system_wide = system_wide; |
| 248 | m->group_events = !metric_no_group && metric__group_events(pm); |
| 249 | m->metric_refs = NULL; |
| 250 | m->evlist = NULL; |
| 251 | |
| 252 | return m; |
| 253 | out_err: |
| 254 | metric__free(m); |
| 255 | return NULL; |
| 256 | } |
| 257 | |
| 258 | static bool contains_metric_id(struct evsel **metric_events, int num_events, |
| 259 | const char *metric_id) |
| 260 | { |
| 261 | int i; |
| 262 | |
| 263 | for (i = 0; i < num_events; i++) { |
| 264 | if (!strcmp(evsel__metric_id(metric_events[i]), metric_id)) |
| 265 | return true; |
| 266 | } |
| 267 | return false; |
| 268 | } |
| 269 | |
| 270 | /** |
| 271 | * setup_metric_events - Find a group of events in metric_evlist that correspond |
| 272 | * to the IDs from a parsed metric expression. |
| 273 | * @pmu: The PMU for the IDs. |
| 274 | * @ids: the metric IDs to match. |
| 275 | * @metric_evlist: the list of perf events. |
| 276 | * @out_metric_events: holds the created metric events array. |
| 277 | */ |
| 278 | static int setup_metric_events(const char *pmu, struct hashmap *ids, |
| 279 | struct evlist *metric_evlist, |
| 280 | struct evsel ***out_metric_events) |
| 281 | { |
| 282 | struct evsel **metric_events; |
| 283 | const char *metric_id; |
| 284 | struct evsel *ev; |
| 285 | size_t ids_size, matched_events, i; |
| 286 | bool all_pmus = !strcmp(pmu, "all") || perf_pmus__num_core_pmus() == 1 || !is_pmu_core(pmu); |
| 287 | |
| 288 | *out_metric_events = NULL; |
| 289 | ids_size = hashmap__size(ids); |
| 290 | |
| 291 | metric_events = calloc(ids_size + 1, sizeof(void *)); |
| 292 | if (!metric_events) |
| 293 | return -ENOMEM; |
| 294 | |
| 295 | matched_events = 0; |
| 296 | evlist__for_each_entry(metric_evlist, ev) { |
| 297 | struct expr_id_data *val_ptr; |
| 298 | |
| 299 | /* Don't match events for the wrong hybrid PMU. */ |
| 300 | if (!all_pmus && ev->pmu_name && evsel__is_hybrid(ev) && |
| 301 | strcmp(ev->pmu_name, pmu)) |
| 302 | continue; |
| 303 | /* |
| 304 | * Check for duplicate events with the same name. For |
| 305 | * example, uncore_imc/cas_count_read/ will turn into 6 |
| 306 | * events per socket on skylakex. Only the first such |
| 307 | * event is placed in metric_events. |
| 308 | */ |
| 309 | metric_id = evsel__metric_id(ev); |
| 310 | if (contains_metric_id(metric_events, matched_events, metric_id)) |
| 311 | continue; |
| 312 | /* |
| 313 | * Does this event belong to the parse context? For |
| 314 | * combined or shared groups, this metric may not care |
| 315 | * about this event. |
| 316 | */ |
| 317 | if (hashmap__find(ids, metric_id, &val_ptr)) { |
| 318 | pr_debug("Matched metric-id %s to %s\n", metric_id, evsel__name(ev)); |
| 319 | metric_events[matched_events++] = ev; |
| 320 | |
| 321 | if (matched_events >= ids_size) |
| 322 | break; |
| 323 | } |
| 324 | } |
| 325 | if (matched_events < ids_size) { |
| 326 | free(metric_events); |
| 327 | return -EINVAL; |
| 328 | } |
| 329 | for (i = 0; i < ids_size; i++) { |
| 330 | ev = metric_events[i]; |
| 331 | ev->collect_stat = true; |
| 332 | |
| 333 | /* |
| 334 | * The metric leader points to the identically named |
| 335 | * event in metric_events. |
| 336 | */ |
| 337 | ev->metric_leader = ev; |
| 338 | /* |
| 339 | * Mark two events with identical names in the same |
| 340 | * group (or globally) as being in use as uncore events |
| 341 | * may be duplicated for each pmu. Set the metric leader |
| 342 | * of such events to be the event that appears in |
| 343 | * metric_events. |
| 344 | */ |
| 345 | metric_id = evsel__metric_id(ev); |
| 346 | evlist__for_each_entry_continue(metric_evlist, ev) { |
| 347 | if (!strcmp(evsel__metric_id(ev), metric_id)) |
| 348 | ev->metric_leader = metric_events[i]; |
| 349 | } |
| 350 | } |
| 351 | *out_metric_events = metric_events; |
| 352 | return 0; |
| 353 | } |
| 354 | |
| 355 | static bool match_metric(const char *metric_or_groups, const char *sought) |
| 356 | { |
| 357 | int len; |
| 358 | char *m; |
| 359 | |
| 360 | if (!sought) |
| 361 | return false; |
| 362 | if (!strcmp(sought, "all")) |
| 363 | return true; |
| 364 | if (!metric_or_groups) |
| 365 | return !strcasecmp(sought, "No_group"); |
| 366 | len = strlen(sought); |
| 367 | if (!strncasecmp(metric_or_groups, sought, len) && |
| 368 | (metric_or_groups[len] == 0 || metric_or_groups[len] == ';')) |
| 369 | return true; |
| 370 | m = strchr(metric_or_groups, ';'); |
| 371 | return m && match_metric(m + 1, sought); |
| 372 | } |
| 373 | |
| 374 | static bool match_pm_metric(const struct pmu_metric *pm, const char *pmu, const char *metric) |
| 375 | { |
| 376 | const char *pm_pmu = pm->pmu ?: "cpu"; |
| 377 | |
| 378 | if (strcmp(pmu, "all") && strcmp(pm_pmu, pmu)) |
| 379 | return false; |
| 380 | |
| 381 | return match_metric(pm->metric_group, metric) || |
| 382 | match_metric(pm->metric_name, metric); |
| 383 | } |
| 384 | |
| 385 | /** struct mep - RB-tree node for building printing information. */ |
| 386 | struct mep { |
| 387 | /** nd - RB-tree element. */ |
| 388 | struct rb_node nd; |
| 389 | /** @metric_group: Owned metric group name, separated others with ';'. */ |
| 390 | char *metric_group; |
| 391 | const char *metric_name; |
| 392 | const char *metric_desc; |
| 393 | const char *metric_long_desc; |
| 394 | const char *metric_expr; |
| 395 | const char *metric_threshold; |
| 396 | const char *metric_unit; |
| 397 | }; |
| 398 | |
| 399 | static int mep_cmp(struct rb_node *rb_node, const void *entry) |
| 400 | { |
| 401 | struct mep *a = container_of(rb_node, struct mep, nd); |
| 402 | struct mep *b = (struct mep *)entry; |
| 403 | int ret; |
| 404 | |
| 405 | ret = strcmp(a->metric_group, b->metric_group); |
| 406 | if (ret) |
| 407 | return ret; |
| 408 | |
| 409 | return strcmp(a->metric_name, b->metric_name); |
| 410 | } |
| 411 | |
| 412 | static struct rb_node *mep_new(struct rblist *rl __maybe_unused, const void *entry) |
| 413 | { |
| 414 | struct mep *me = malloc(sizeof(struct mep)); |
| 415 | |
| 416 | if (!me) |
| 417 | return NULL; |
| 418 | |
| 419 | memcpy(me, entry, sizeof(struct mep)); |
| 420 | return &me->nd; |
| 421 | } |
| 422 | |
| 423 | static void mep_delete(struct rblist *rl __maybe_unused, |
| 424 | struct rb_node *nd) |
| 425 | { |
| 426 | struct mep *me = container_of(nd, struct mep, nd); |
| 427 | |
| 428 | zfree(&me->metric_group); |
| 429 | free(me); |
| 430 | } |
| 431 | |
| 432 | static struct mep *mep_lookup(struct rblist *groups, const char *metric_group, |
| 433 | const char *metric_name) |
| 434 | { |
| 435 | struct rb_node *nd; |
| 436 | struct mep me = { |
| 437 | .metric_group = strdup(metric_group), |
| 438 | .metric_name = metric_name, |
| 439 | }; |
| 440 | nd = rblist__find(groups, &me); |
| 441 | if (nd) { |
| 442 | free(me.metric_group); |
| 443 | return container_of(nd, struct mep, nd); |
| 444 | } |
| 445 | rblist__add_node(groups, &me); |
| 446 | nd = rblist__find(groups, &me); |
| 447 | if (nd) |
| 448 | return container_of(nd, struct mep, nd); |
| 449 | return NULL; |
| 450 | } |
| 451 | |
| 452 | static int metricgroup__add_to_mep_groups(const struct pmu_metric *pm, |
| 453 | struct rblist *groups) |
| 454 | { |
| 455 | const char *g; |
| 456 | char *omg, *mg; |
| 457 | |
| 458 | mg = strdup(pm->metric_group ?: pm->metric_name); |
| 459 | if (!mg) |
| 460 | return -ENOMEM; |
| 461 | omg = mg; |
| 462 | while ((g = strsep(&mg, ";")) != NULL) { |
| 463 | struct mep *me; |
| 464 | |
| 465 | g = skip_spaces(g); |
| 466 | if (strlen(g)) |
| 467 | me = mep_lookup(groups, g, pm->metric_name); |
| 468 | else |
| 469 | me = mep_lookup(groups, pm->metric_name, pm->metric_name); |
| 470 | |
| 471 | if (me) { |
| 472 | me->metric_desc = pm->desc; |
| 473 | me->metric_long_desc = pm->long_desc; |
| 474 | me->metric_expr = pm->metric_expr; |
| 475 | me->metric_threshold = pm->metric_threshold; |
| 476 | me->metric_unit = pm->unit; |
| 477 | } |
| 478 | } |
| 479 | free(omg); |
| 480 | |
| 481 | return 0; |
| 482 | } |
| 483 | |
| 484 | struct metricgroup_iter_data { |
| 485 | pmu_metric_iter_fn fn; |
| 486 | void *data; |
| 487 | }; |
| 488 | |
| 489 | static int metricgroup__sys_event_iter(const struct pmu_metric *pm, |
| 490 | const struct pmu_metrics_table *table, |
| 491 | void *data) |
| 492 | { |
| 493 | struct metricgroup_iter_data *d = data; |
| 494 | struct perf_pmu *pmu = NULL; |
| 495 | |
| 496 | if (!pm->metric_expr || !pm->compat) |
| 497 | return 0; |
| 498 | |
| 499 | while ((pmu = perf_pmus__scan(pmu))) { |
| 500 | |
| 501 | if (!pmu->id || !pmu_uncore_identifier_match(pm->compat, pmu->id)) |
| 502 | continue; |
| 503 | |
| 504 | return d->fn(pm, table, d->data); |
| 505 | } |
| 506 | return 0; |
| 507 | } |
| 508 | |
| 509 | static int metricgroup__add_to_mep_groups_callback(const struct pmu_metric *pm, |
| 510 | const struct pmu_metrics_table *table __maybe_unused, |
| 511 | void *vdata) |
| 512 | { |
| 513 | struct rblist *groups = vdata; |
| 514 | |
| 515 | return metricgroup__add_to_mep_groups(pm, groups); |
| 516 | } |
| 517 | |
| 518 | void metricgroup__print(const struct print_callbacks *print_cb, void *print_state) |
| 519 | { |
| 520 | struct rblist groups; |
| 521 | const struct pmu_metrics_table *table; |
| 522 | struct rb_node *node, *next; |
| 523 | |
| 524 | rblist__init(&groups); |
| 525 | groups.node_new = mep_new; |
| 526 | groups.node_cmp = mep_cmp; |
| 527 | groups.node_delete = mep_delete; |
| 528 | table = pmu_metrics_table__find(); |
| 529 | if (table) { |
| 530 | pmu_metrics_table__for_each_metric(table, |
| 531 | metricgroup__add_to_mep_groups_callback, |
| 532 | &groups); |
| 533 | } |
| 534 | { |
| 535 | struct metricgroup_iter_data data = { |
| 536 | .fn = metricgroup__add_to_mep_groups_callback, |
| 537 | .data = &groups, |
| 538 | }; |
| 539 | pmu_for_each_sys_metric(metricgroup__sys_event_iter, &data); |
| 540 | } |
| 541 | |
| 542 | for (node = rb_first_cached(&groups.entries); node; node = next) { |
| 543 | struct mep *me = container_of(node, struct mep, nd); |
| 544 | |
| 545 | print_cb->print_metric(print_state, |
| 546 | me->metric_group, |
| 547 | me->metric_name, |
| 548 | me->metric_desc, |
| 549 | me->metric_long_desc, |
| 550 | me->metric_expr, |
| 551 | me->metric_threshold, |
| 552 | me->metric_unit); |
| 553 | next = rb_next(node); |
| 554 | rblist__remove_node(&groups, node); |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | static const char *code_characters = ",-=@"; |
| 559 | |
| 560 | static int encode_metric_id(struct strbuf *sb, const char *x) |
| 561 | { |
| 562 | char *c; |
| 563 | int ret = 0; |
| 564 | |
| 565 | for (; *x; x++) { |
| 566 | c = strchr(code_characters, *x); |
| 567 | if (c) { |
| 568 | ret = strbuf_addch(sb, '!'); |
| 569 | if (ret) |
| 570 | break; |
| 571 | |
| 572 | ret = strbuf_addch(sb, '0' + (c - code_characters)); |
| 573 | if (ret) |
| 574 | break; |
| 575 | } else { |
| 576 | ret = strbuf_addch(sb, *x); |
| 577 | if (ret) |
| 578 | break; |
| 579 | } |
| 580 | } |
| 581 | return ret; |
| 582 | } |
| 583 | |
| 584 | static int decode_metric_id(struct strbuf *sb, const char *x) |
| 585 | { |
| 586 | const char *orig = x; |
| 587 | size_t i; |
| 588 | char c; |
| 589 | int ret; |
| 590 | |
| 591 | for (; *x; x++) { |
| 592 | c = *x; |
| 593 | if (*x == '!') { |
| 594 | x++; |
| 595 | i = *x - '0'; |
| 596 | if (i > strlen(code_characters)) { |
| 597 | pr_err("Bad metric-id encoding in: '%s'", orig); |
| 598 | return -1; |
| 599 | } |
| 600 | c = code_characters[i]; |
| 601 | } |
| 602 | ret = strbuf_addch(sb, c); |
| 603 | if (ret) |
| 604 | return ret; |
| 605 | } |
| 606 | return 0; |
| 607 | } |
| 608 | |
| 609 | static int decode_all_metric_ids(struct evlist *perf_evlist, const char *modifier) |
| 610 | { |
| 611 | struct evsel *ev; |
| 612 | struct strbuf sb = STRBUF_INIT; |
| 613 | char *cur; |
| 614 | int ret = 0; |
| 615 | |
| 616 | evlist__for_each_entry(perf_evlist, ev) { |
| 617 | if (!ev->metric_id) |
| 618 | continue; |
| 619 | |
| 620 | ret = strbuf_setlen(&sb, 0); |
| 621 | if (ret) |
| 622 | break; |
| 623 | |
| 624 | ret = decode_metric_id(&sb, ev->metric_id); |
| 625 | if (ret) |
| 626 | break; |
| 627 | |
| 628 | free((char *)ev->metric_id); |
| 629 | ev->metric_id = strdup(sb.buf); |
| 630 | if (!ev->metric_id) { |
| 631 | ret = -ENOMEM; |
| 632 | break; |
| 633 | } |
| 634 | /* |
| 635 | * If the name is just the parsed event, use the metric-id to |
| 636 | * give a more friendly display version. |
| 637 | */ |
| 638 | if (strstr(ev->name, "metric-id=")) { |
| 639 | bool has_slash = false; |
| 640 | |
| 641 | zfree(&ev->name); |
| 642 | for (cur = strchr(sb.buf, '@') ; cur; cur = strchr(++cur, '@')) { |
| 643 | *cur = '/'; |
| 644 | has_slash = true; |
| 645 | } |
| 646 | |
| 647 | if (modifier) { |
| 648 | if (!has_slash && !strchr(sb.buf, ':')) { |
| 649 | ret = strbuf_addch(&sb, ':'); |
| 650 | if (ret) |
| 651 | break; |
| 652 | } |
| 653 | ret = strbuf_addstr(&sb, modifier); |
| 654 | if (ret) |
| 655 | break; |
| 656 | } |
| 657 | ev->name = strdup(sb.buf); |
| 658 | if (!ev->name) { |
| 659 | ret = -ENOMEM; |
| 660 | break; |
| 661 | } |
| 662 | } |
| 663 | } |
| 664 | strbuf_release(&sb); |
| 665 | return ret; |
| 666 | } |
| 667 | |
| 668 | static int metricgroup__build_event_string(struct strbuf *events, |
| 669 | const struct expr_parse_ctx *ctx, |
| 670 | const char *modifier, |
| 671 | bool group_events) |
| 672 | { |
| 673 | struct hashmap_entry *cur; |
| 674 | size_t bkt; |
| 675 | bool no_group = true, has_tool_events = false; |
| 676 | bool tool_events[PERF_TOOL_MAX] = {false}; |
| 677 | int ret = 0; |
| 678 | |
| 679 | #define RETURN_IF_NON_ZERO(x) do { if (x) return x; } while (0) |
| 680 | |
| 681 | hashmap__for_each_entry(ctx->ids, cur, bkt) { |
| 682 | const char *sep, *rsep, *id = cur->pkey; |
| 683 | enum perf_tool_event ev; |
| 684 | |
| 685 | pr_debug("found event %s\n", id); |
| 686 | |
| 687 | /* Always move tool events outside of the group. */ |
| 688 | ev = perf_tool_event__from_str(id); |
| 689 | if (ev != PERF_TOOL_NONE) { |
| 690 | has_tool_events = true; |
| 691 | tool_events[ev] = true; |
| 692 | continue; |
| 693 | } |
| 694 | /* Separate events with commas and open the group if necessary. */ |
| 695 | if (no_group) { |
| 696 | if (group_events) { |
| 697 | ret = strbuf_addch(events, '{'); |
| 698 | RETURN_IF_NON_ZERO(ret); |
| 699 | } |
| 700 | |
| 701 | no_group = false; |
| 702 | } else { |
| 703 | ret = strbuf_addch(events, ','); |
| 704 | RETURN_IF_NON_ZERO(ret); |
| 705 | } |
| 706 | /* |
| 707 | * Encode the ID as an event string. Add a qualifier for |
| 708 | * metric_id that is the original name except with characters |
| 709 | * that parse-events can't parse replaced. For example, |
| 710 | * 'msr@tsc@' gets added as msr/tsc,metric-id=msr!3tsc!3/ |
| 711 | */ |
| 712 | sep = strchr(id, '@'); |
| 713 | if (sep != NULL) { |
| 714 | ret = strbuf_add(events, id, sep - id); |
| 715 | RETURN_IF_NON_ZERO(ret); |
| 716 | ret = strbuf_addch(events, '/'); |
| 717 | RETURN_IF_NON_ZERO(ret); |
| 718 | rsep = strrchr(sep, '@'); |
| 719 | ret = strbuf_add(events, sep + 1, rsep - sep - 1); |
| 720 | RETURN_IF_NON_ZERO(ret); |
| 721 | ret = strbuf_addstr(events, ",metric-id="); |
| 722 | RETURN_IF_NON_ZERO(ret); |
| 723 | sep = rsep; |
| 724 | } else { |
| 725 | sep = strchr(id, ':'); |
| 726 | if (sep != NULL) { |
| 727 | ret = strbuf_add(events, id, sep - id); |
| 728 | RETURN_IF_NON_ZERO(ret); |
| 729 | } else { |
| 730 | ret = strbuf_addstr(events, id); |
| 731 | RETURN_IF_NON_ZERO(ret); |
| 732 | } |
| 733 | ret = strbuf_addstr(events, "/metric-id="); |
| 734 | RETURN_IF_NON_ZERO(ret); |
| 735 | } |
| 736 | ret = encode_metric_id(events, id); |
| 737 | RETURN_IF_NON_ZERO(ret); |
| 738 | ret = strbuf_addstr(events, "/"); |
| 739 | RETURN_IF_NON_ZERO(ret); |
| 740 | |
| 741 | if (sep != NULL) { |
| 742 | ret = strbuf_addstr(events, sep + 1); |
| 743 | RETURN_IF_NON_ZERO(ret); |
| 744 | } |
| 745 | if (modifier) { |
| 746 | ret = strbuf_addstr(events, modifier); |
| 747 | RETURN_IF_NON_ZERO(ret); |
| 748 | } |
| 749 | } |
| 750 | if (!no_group && group_events) { |
| 751 | ret = strbuf_addf(events, "}:W"); |
| 752 | RETURN_IF_NON_ZERO(ret); |
| 753 | } |
| 754 | if (has_tool_events) { |
| 755 | int i; |
| 756 | |
| 757 | perf_tool_event__for_each_event(i) { |
| 758 | if (tool_events[i]) { |
| 759 | if (!no_group) { |
| 760 | ret = strbuf_addch(events, ','); |
| 761 | RETURN_IF_NON_ZERO(ret); |
| 762 | } |
| 763 | no_group = false; |
| 764 | ret = strbuf_addstr(events, perf_tool_event__to_str(i)); |
| 765 | RETURN_IF_NON_ZERO(ret); |
| 766 | } |
| 767 | } |
| 768 | } |
| 769 | |
| 770 | return ret; |
| 771 | #undef RETURN_IF_NON_ZERO |
| 772 | } |
| 773 | |
| 774 | int __weak arch_get_runtimeparam(const struct pmu_metric *pm __maybe_unused) |
| 775 | { |
| 776 | return 1; |
| 777 | } |
| 778 | |
| 779 | /* |
| 780 | * A singly linked list on the stack of the names of metrics being |
| 781 | * processed. Used to identify recursion. |
| 782 | */ |
| 783 | struct visited_metric { |
| 784 | const char *name; |
| 785 | const struct visited_metric *parent; |
| 786 | }; |
| 787 | |
| 788 | struct metricgroup_add_iter_data { |
| 789 | struct list_head *metric_list; |
| 790 | const char *pmu; |
| 791 | const char *metric_name; |
| 792 | const char *modifier; |
| 793 | int *ret; |
| 794 | bool *has_match; |
| 795 | bool metric_no_group; |
| 796 | bool metric_no_threshold; |
| 797 | const char *user_requested_cpu_list; |
| 798 | bool system_wide; |
| 799 | struct metric *root_metric; |
| 800 | const struct visited_metric *visited; |
| 801 | const struct pmu_metrics_table *table; |
| 802 | }; |
| 803 | |
| 804 | static bool metricgroup__find_metric(const char *pmu, |
| 805 | const char *metric, |
| 806 | const struct pmu_metrics_table *table, |
| 807 | struct pmu_metric *pm); |
| 808 | |
| 809 | static int add_metric(struct list_head *metric_list, |
| 810 | const struct pmu_metric *pm, |
| 811 | const char *modifier, |
| 812 | bool metric_no_group, |
| 813 | bool metric_no_threshold, |
| 814 | const char *user_requested_cpu_list, |
| 815 | bool system_wide, |
| 816 | struct metric *root_metric, |
| 817 | const struct visited_metric *visited, |
| 818 | const struct pmu_metrics_table *table); |
| 819 | |
| 820 | /** |
| 821 | * resolve_metric - Locate metrics within the root metric and recursively add |
| 822 | * references to them. |
| 823 | * @metric_list: The list the metric is added to. |
| 824 | * @pmu: The PMU name to resolve metrics on, or "all" for all PMUs. |
| 825 | * @modifier: if non-null event modifiers like "u". |
| 826 | * @metric_no_group: Should events written to events be grouped "{}" or |
| 827 | * global. Grouping is the default but due to multiplexing the |
| 828 | * user may override. |
| 829 | * @user_requested_cpu_list: Command line specified CPUs to record on. |
| 830 | * @system_wide: Are events for all processes recorded. |
| 831 | * @root_metric: Metrics may reference other metrics to form a tree. In this |
| 832 | * case the root_metric holds all the IDs and a list of referenced |
| 833 | * metrics. When adding a root this argument is NULL. |
| 834 | * @visited: A singly linked list of metric names being added that is used to |
| 835 | * detect recursion. |
| 836 | * @table: The table that is searched for metrics, most commonly the table for the |
| 837 | * architecture perf is running upon. |
| 838 | */ |
| 839 | static int resolve_metric(struct list_head *metric_list, |
| 840 | const char *pmu, |
| 841 | const char *modifier, |
| 842 | bool metric_no_group, |
| 843 | bool metric_no_threshold, |
| 844 | const char *user_requested_cpu_list, |
| 845 | bool system_wide, |
| 846 | struct metric *root_metric, |
| 847 | const struct visited_metric *visited, |
| 848 | const struct pmu_metrics_table *table) |
| 849 | { |
| 850 | struct hashmap_entry *cur; |
| 851 | size_t bkt; |
| 852 | struct to_resolve { |
| 853 | /* The metric to resolve. */ |
| 854 | struct pmu_metric pm; |
| 855 | /* |
| 856 | * The key in the IDs map, this may differ from in case, |
| 857 | * etc. from pm->metric_name. |
| 858 | */ |
| 859 | const char *key; |
| 860 | } *pending = NULL; |
| 861 | int i, ret = 0, pending_cnt = 0; |
| 862 | |
| 863 | /* |
| 864 | * Iterate all the parsed IDs and if there's a matching metric and it to |
| 865 | * the pending array. |
| 866 | */ |
| 867 | hashmap__for_each_entry(root_metric->pctx->ids, cur, bkt) { |
| 868 | struct pmu_metric pm; |
| 869 | |
| 870 | if (metricgroup__find_metric(pmu, cur->pkey, table, &pm)) { |
| 871 | pending = realloc(pending, |
| 872 | (pending_cnt + 1) * sizeof(struct to_resolve)); |
| 873 | if (!pending) |
| 874 | return -ENOMEM; |
| 875 | |
| 876 | memcpy(&pending[pending_cnt].pm, &pm, sizeof(pm)); |
| 877 | pending[pending_cnt].key = cur->pkey; |
| 878 | pending_cnt++; |
| 879 | } |
| 880 | } |
| 881 | |
| 882 | /* Remove the metric IDs from the context. */ |
| 883 | for (i = 0; i < pending_cnt; i++) |
| 884 | expr__del_id(root_metric->pctx, pending[i].key); |
| 885 | |
| 886 | /* |
| 887 | * Recursively add all the metrics, IDs are added to the root metric's |
| 888 | * context. |
| 889 | */ |
| 890 | for (i = 0; i < pending_cnt; i++) { |
| 891 | ret = add_metric(metric_list, &pending[i].pm, modifier, metric_no_group, |
| 892 | metric_no_threshold, user_requested_cpu_list, system_wide, |
| 893 | root_metric, visited, table); |
| 894 | if (ret) |
| 895 | break; |
| 896 | } |
| 897 | |
| 898 | free(pending); |
| 899 | return ret; |
| 900 | } |
| 901 | |
| 902 | /** |
| 903 | * __add_metric - Add a metric to metric_list. |
| 904 | * @metric_list: The list the metric is added to. |
| 905 | * @pm: The pmu_metric containing the metric to be added. |
| 906 | * @modifier: if non-null event modifiers like "u". |
| 907 | * @metric_no_group: Should events written to events be grouped "{}" or |
| 908 | * global. Grouping is the default but due to multiplexing the |
| 909 | * user may override. |
| 910 | * @metric_no_threshold: Should threshold expressions be ignored? |
| 911 | * @runtime: A special argument for the parser only known at runtime. |
| 912 | * @user_requested_cpu_list: Command line specified CPUs to record on. |
| 913 | * @system_wide: Are events for all processes recorded. |
| 914 | * @root_metric: Metrics may reference other metrics to form a tree. In this |
| 915 | * case the root_metric holds all the IDs and a list of referenced |
| 916 | * metrics. When adding a root this argument is NULL. |
| 917 | * @visited: A singly linked list of metric names being added that is used to |
| 918 | * detect recursion. |
| 919 | * @table: The table that is searched for metrics, most commonly the table for the |
| 920 | * architecture perf is running upon. |
| 921 | */ |
| 922 | static int __add_metric(struct list_head *metric_list, |
| 923 | const struct pmu_metric *pm, |
| 924 | const char *modifier, |
| 925 | bool metric_no_group, |
| 926 | bool metric_no_threshold, |
| 927 | int runtime, |
| 928 | const char *user_requested_cpu_list, |
| 929 | bool system_wide, |
| 930 | struct metric *root_metric, |
| 931 | const struct visited_metric *visited, |
| 932 | const struct pmu_metrics_table *table) |
| 933 | { |
| 934 | const struct visited_metric *vm; |
| 935 | int ret; |
| 936 | bool is_root = !root_metric; |
| 937 | const char *expr; |
| 938 | struct visited_metric visited_node = { |
| 939 | .name = pm->metric_name, |
| 940 | .parent = visited, |
| 941 | }; |
| 942 | |
| 943 | for (vm = visited; vm; vm = vm->parent) { |
| 944 | if (!strcmp(pm->metric_name, vm->name)) { |
| 945 | pr_err("failed: recursion detected for %s\n", pm->metric_name); |
| 946 | return -1; |
| 947 | } |
| 948 | } |
| 949 | |
| 950 | if (is_root) { |
| 951 | /* |
| 952 | * This metric is the root of a tree and may reference other |
| 953 | * metrics that are added recursively. |
| 954 | */ |
| 955 | root_metric = metric__new(pm, modifier, metric_no_group, runtime, |
| 956 | user_requested_cpu_list, system_wide); |
| 957 | if (!root_metric) |
| 958 | return -ENOMEM; |
| 959 | |
| 960 | } else { |
| 961 | int cnt = 0; |
| 962 | |
| 963 | /* |
| 964 | * This metric was referenced in a metric higher in the |
| 965 | * tree. Check if the same metric is already resolved in the |
| 966 | * metric_refs list. |
| 967 | */ |
| 968 | if (root_metric->metric_refs) { |
| 969 | for (; root_metric->metric_refs[cnt].metric_name; cnt++) { |
| 970 | if (!strcmp(pm->metric_name, |
| 971 | root_metric->metric_refs[cnt].metric_name)) |
| 972 | return 0; |
| 973 | } |
| 974 | } |
| 975 | |
| 976 | /* Create reference. Need space for the entry and the terminator. */ |
| 977 | root_metric->metric_refs = realloc(root_metric->metric_refs, |
| 978 | (cnt + 2) * sizeof(struct metric_ref)); |
| 979 | if (!root_metric->metric_refs) |
| 980 | return -ENOMEM; |
| 981 | |
| 982 | /* |
| 983 | * Intentionally passing just const char pointers, |
| 984 | * from 'pe' object, so they never go away. We don't |
| 985 | * need to change them, so there's no need to create |
| 986 | * our own copy. |
| 987 | */ |
| 988 | root_metric->metric_refs[cnt].metric_name = pm->metric_name; |
| 989 | root_metric->metric_refs[cnt].metric_expr = pm->metric_expr; |
| 990 | |
| 991 | /* Null terminate array. */ |
| 992 | root_metric->metric_refs[cnt+1].metric_name = NULL; |
| 993 | root_metric->metric_refs[cnt+1].metric_expr = NULL; |
| 994 | } |
| 995 | |
| 996 | /* |
| 997 | * For both the parent and referenced metrics, we parse |
| 998 | * all the metric's IDs and add it to the root context. |
| 999 | */ |
| 1000 | ret = 0; |
| 1001 | expr = pm->metric_expr; |
| 1002 | if (is_root && pm->metric_threshold) { |
| 1003 | /* |
| 1004 | * Threshold expressions are built off the actual metric. Switch |
| 1005 | * to use that in case of additional necessary events. Change |
| 1006 | * the visited node name to avoid this being flagged as |
| 1007 | * recursion. If the threshold events are disabled, just use the |
| 1008 | * metric's name as a reference. This allows metric threshold |
| 1009 | * computation if there are sufficient events. |
| 1010 | */ |
| 1011 | assert(strstr(pm->metric_threshold, pm->metric_name)); |
| 1012 | expr = metric_no_threshold ? pm->metric_name : pm->metric_threshold; |
| 1013 | visited_node.name = "__threshold__"; |
| 1014 | } |
| 1015 | if (expr__find_ids(expr, NULL, root_metric->pctx) < 0) { |
| 1016 | /* Broken metric. */ |
| 1017 | ret = -EINVAL; |
| 1018 | } |
| 1019 | if (!ret) { |
| 1020 | /* Resolve referenced metrics. */ |
| 1021 | const char *pmu = pm->pmu ?: "cpu"; |
| 1022 | |
| 1023 | ret = resolve_metric(metric_list, pmu, modifier, metric_no_group, |
| 1024 | metric_no_threshold, user_requested_cpu_list, |
| 1025 | system_wide, root_metric, &visited_node, |
| 1026 | table); |
| 1027 | } |
| 1028 | if (ret) { |
| 1029 | if (is_root) |
| 1030 | metric__free(root_metric); |
| 1031 | |
| 1032 | } else if (is_root) |
| 1033 | list_add(&root_metric->nd, metric_list); |
| 1034 | |
| 1035 | return ret; |
| 1036 | } |
| 1037 | |
| 1038 | struct metricgroup__find_metric_data { |
| 1039 | const char *pmu; |
| 1040 | const char *metric; |
| 1041 | struct pmu_metric *pm; |
| 1042 | }; |
| 1043 | |
| 1044 | static int metricgroup__find_metric_callback(const struct pmu_metric *pm, |
| 1045 | const struct pmu_metrics_table *table __maybe_unused, |
| 1046 | void *vdata) |
| 1047 | { |
| 1048 | struct metricgroup__find_metric_data *data = vdata; |
| 1049 | const char *pm_pmu = pm->pmu ?: "cpu"; |
| 1050 | |
| 1051 | if (strcmp(data->pmu, "all") && strcmp(pm_pmu, data->pmu)) |
| 1052 | return 0; |
| 1053 | |
| 1054 | if (!match_metric(pm->metric_name, data->metric)) |
| 1055 | return 0; |
| 1056 | |
| 1057 | memcpy(data->pm, pm, sizeof(*pm)); |
| 1058 | return 1; |
| 1059 | } |
| 1060 | |
| 1061 | static bool metricgroup__find_metric(const char *pmu, |
| 1062 | const char *metric, |
| 1063 | const struct pmu_metrics_table *table, |
| 1064 | struct pmu_metric *pm) |
| 1065 | { |
| 1066 | struct metricgroup__find_metric_data data = { |
| 1067 | .pmu = pmu, |
| 1068 | .metric = metric, |
| 1069 | .pm = pm, |
| 1070 | }; |
| 1071 | |
| 1072 | return pmu_metrics_table__for_each_metric(table, metricgroup__find_metric_callback, &data) |
| 1073 | ? true : false; |
| 1074 | } |
| 1075 | |
| 1076 | static int add_metric(struct list_head *metric_list, |
| 1077 | const struct pmu_metric *pm, |
| 1078 | const char *modifier, |
| 1079 | bool metric_no_group, |
| 1080 | bool metric_no_threshold, |
| 1081 | const char *user_requested_cpu_list, |
| 1082 | bool system_wide, |
| 1083 | struct metric *root_metric, |
| 1084 | const struct visited_metric *visited, |
| 1085 | const struct pmu_metrics_table *table) |
| 1086 | { |
| 1087 | int ret = 0; |
| 1088 | |
| 1089 | pr_debug("metric expr %s for %s\n", pm->metric_expr, pm->metric_name); |
| 1090 | |
| 1091 | if (!strstr(pm->metric_expr, "?")) { |
| 1092 | ret = __add_metric(metric_list, pm, modifier, metric_no_group, |
| 1093 | metric_no_threshold, 0, user_requested_cpu_list, |
| 1094 | system_wide, root_metric, visited, table); |
| 1095 | } else { |
| 1096 | int j, count; |
| 1097 | |
| 1098 | count = arch_get_runtimeparam(pm); |
| 1099 | |
| 1100 | /* This loop is added to create multiple |
| 1101 | * events depend on count value and add |
| 1102 | * those events to metric_list. |
| 1103 | */ |
| 1104 | |
| 1105 | for (j = 0; j < count && !ret; j++) |
| 1106 | ret = __add_metric(metric_list, pm, modifier, metric_no_group, |
| 1107 | metric_no_threshold, j, user_requested_cpu_list, |
| 1108 | system_wide, root_metric, visited, table); |
| 1109 | } |
| 1110 | |
| 1111 | return ret; |
| 1112 | } |
| 1113 | |
| 1114 | static int metricgroup__add_metric_sys_event_iter(const struct pmu_metric *pm, |
| 1115 | const struct pmu_metrics_table *table __maybe_unused, |
| 1116 | void *data) |
| 1117 | { |
| 1118 | struct metricgroup_add_iter_data *d = data; |
| 1119 | int ret; |
| 1120 | |
| 1121 | if (!match_pm_metric(pm, d->pmu, d->metric_name)) |
| 1122 | return 0; |
| 1123 | |
| 1124 | ret = add_metric(d->metric_list, pm, d->modifier, d->metric_no_group, |
| 1125 | d->metric_no_threshold, d->user_requested_cpu_list, |
| 1126 | d->system_wide, d->root_metric, d->visited, d->table); |
| 1127 | if (ret) |
| 1128 | goto out; |
| 1129 | |
| 1130 | *(d->has_match) = true; |
| 1131 | |
| 1132 | out: |
| 1133 | *(d->ret) = ret; |
| 1134 | return ret; |
| 1135 | } |
| 1136 | |
| 1137 | /** |
| 1138 | * metric_list_cmp - list_sort comparator that sorts metrics with more events to |
| 1139 | * the front. tool events are excluded from the count. |
| 1140 | */ |
| 1141 | static int metric_list_cmp(void *priv __maybe_unused, const struct list_head *l, |
| 1142 | const struct list_head *r) |
| 1143 | { |
| 1144 | const struct metric *left = container_of(l, struct metric, nd); |
| 1145 | const struct metric *right = container_of(r, struct metric, nd); |
| 1146 | struct expr_id_data *data; |
| 1147 | int i, left_count, right_count; |
| 1148 | |
| 1149 | left_count = hashmap__size(left->pctx->ids); |
| 1150 | perf_tool_event__for_each_event(i) { |
| 1151 | if (!expr__get_id(left->pctx, perf_tool_event__to_str(i), &data)) |
| 1152 | left_count--; |
| 1153 | } |
| 1154 | |
| 1155 | right_count = hashmap__size(right->pctx->ids); |
| 1156 | perf_tool_event__for_each_event(i) { |
| 1157 | if (!expr__get_id(right->pctx, perf_tool_event__to_str(i), &data)) |
| 1158 | right_count--; |
| 1159 | } |
| 1160 | |
| 1161 | return right_count - left_count; |
| 1162 | } |
| 1163 | |
| 1164 | /** |
| 1165 | * default_metricgroup_cmp - Implements complex key for the Default metricgroup |
| 1166 | * that first sorts by default_metricgroup_name, then |
| 1167 | * metric_name. |
| 1168 | */ |
| 1169 | static int default_metricgroup_cmp(void *priv __maybe_unused, |
| 1170 | const struct list_head *l, |
| 1171 | const struct list_head *r) |
| 1172 | { |
| 1173 | const struct metric *left = container_of(l, struct metric, nd); |
| 1174 | const struct metric *right = container_of(r, struct metric, nd); |
| 1175 | int diff = strcmp(right->default_metricgroup_name, left->default_metricgroup_name); |
| 1176 | |
| 1177 | if (diff) |
| 1178 | return diff; |
| 1179 | |
| 1180 | return strcmp(right->metric_name, left->metric_name); |
| 1181 | } |
| 1182 | |
| 1183 | struct metricgroup__add_metric_data { |
| 1184 | struct list_head *list; |
| 1185 | const char *pmu; |
| 1186 | const char *metric_name; |
| 1187 | const char *modifier; |
| 1188 | const char *user_requested_cpu_list; |
| 1189 | bool metric_no_group; |
| 1190 | bool metric_no_threshold; |
| 1191 | bool system_wide; |
| 1192 | bool has_match; |
| 1193 | }; |
| 1194 | |
| 1195 | static int metricgroup__add_metric_callback(const struct pmu_metric *pm, |
| 1196 | const struct pmu_metrics_table *table, |
| 1197 | void *vdata) |
| 1198 | { |
| 1199 | struct metricgroup__add_metric_data *data = vdata; |
| 1200 | int ret = 0; |
| 1201 | |
| 1202 | if (pm->metric_expr && match_pm_metric(pm, data->pmu, data->metric_name)) { |
| 1203 | bool metric_no_group = data->metric_no_group || |
| 1204 | match_metric(pm->metricgroup_no_group, data->metric_name); |
| 1205 | |
| 1206 | data->has_match = true; |
| 1207 | ret = add_metric(data->list, pm, data->modifier, metric_no_group, |
| 1208 | data->metric_no_threshold, data->user_requested_cpu_list, |
| 1209 | data->system_wide, /*root_metric=*/NULL, |
| 1210 | /*visited_metrics=*/NULL, table); |
| 1211 | } |
| 1212 | return ret; |
| 1213 | } |
| 1214 | |
| 1215 | /** |
| 1216 | * metricgroup__add_metric - Find and add a metric, or a metric group. |
| 1217 | * @pmu: The PMU name to search for metrics on, or "all" for all PMUs. |
| 1218 | * @metric_name: The name of the metric or metric group. For example, "IPC" |
| 1219 | * could be the name of a metric and "TopDownL1" the name of a |
| 1220 | * metric group. |
| 1221 | * @modifier: if non-null event modifiers like "u". |
| 1222 | * @metric_no_group: Should events written to events be grouped "{}" or |
| 1223 | * global. Grouping is the default but due to multiplexing the |
| 1224 | * user may override. |
| 1225 | * @user_requested_cpu_list: Command line specified CPUs to record on. |
| 1226 | * @system_wide: Are events for all processes recorded. |
| 1227 | * @metric_list: The list that the metric or metric group are added to. |
| 1228 | * @table: The table that is searched for metrics, most commonly the table for the |
| 1229 | * architecture perf is running upon. |
| 1230 | */ |
| 1231 | static int metricgroup__add_metric(const char *pmu, const char *metric_name, const char *modifier, |
| 1232 | bool metric_no_group, bool metric_no_threshold, |
| 1233 | const char *user_requested_cpu_list, |
| 1234 | bool system_wide, |
| 1235 | struct list_head *metric_list, |
| 1236 | const struct pmu_metrics_table *table) |
| 1237 | { |
| 1238 | LIST_HEAD(list); |
| 1239 | int ret; |
| 1240 | bool has_match = false; |
| 1241 | |
| 1242 | { |
| 1243 | struct metricgroup__add_metric_data data = { |
| 1244 | .list = &list, |
| 1245 | .pmu = pmu, |
| 1246 | .metric_name = metric_name, |
| 1247 | .modifier = modifier, |
| 1248 | .metric_no_group = metric_no_group, |
| 1249 | .metric_no_threshold = metric_no_threshold, |
| 1250 | .user_requested_cpu_list = user_requested_cpu_list, |
| 1251 | .system_wide = system_wide, |
| 1252 | .has_match = false, |
| 1253 | }; |
| 1254 | /* |
| 1255 | * Iterate over all metrics seeing if metric matches either the |
| 1256 | * name or group. When it does add the metric to the list. |
| 1257 | */ |
| 1258 | ret = pmu_metrics_table__for_each_metric(table, metricgroup__add_metric_callback, |
| 1259 | &data); |
| 1260 | if (ret) |
| 1261 | goto out; |
| 1262 | |
| 1263 | has_match = data.has_match; |
| 1264 | } |
| 1265 | { |
| 1266 | struct metricgroup_iter_data data = { |
| 1267 | .fn = metricgroup__add_metric_sys_event_iter, |
| 1268 | .data = (void *) &(struct metricgroup_add_iter_data) { |
| 1269 | .metric_list = &list, |
| 1270 | .pmu = pmu, |
| 1271 | .metric_name = metric_name, |
| 1272 | .modifier = modifier, |
| 1273 | .metric_no_group = metric_no_group, |
| 1274 | .user_requested_cpu_list = user_requested_cpu_list, |
| 1275 | .system_wide = system_wide, |
| 1276 | .has_match = &has_match, |
| 1277 | .ret = &ret, |
| 1278 | .table = table, |
| 1279 | }, |
| 1280 | }; |
| 1281 | |
| 1282 | pmu_for_each_sys_metric(metricgroup__sys_event_iter, &data); |
| 1283 | } |
| 1284 | /* End of pmu events. */ |
| 1285 | if (!has_match) |
| 1286 | ret = -EINVAL; |
| 1287 | |
| 1288 | out: |
| 1289 | /* |
| 1290 | * add to metric_list so that they can be released |
| 1291 | * even if it's failed |
| 1292 | */ |
| 1293 | list_splice(&list, metric_list); |
| 1294 | return ret; |
| 1295 | } |
| 1296 | |
| 1297 | /** |
| 1298 | * metricgroup__add_metric_list - Find and add metrics, or metric groups, |
| 1299 | * specified in a list. |
| 1300 | * @pmu: A pmu to restrict the metrics to, or "all" for all PMUS. |
| 1301 | * @list: the list of metrics or metric groups. For example, "IPC,CPI,TopDownL1" |
| 1302 | * would match the IPC and CPI metrics, and TopDownL1 would match all |
| 1303 | * the metrics in the TopDownL1 group. |
| 1304 | * @metric_no_group: Should events written to events be grouped "{}" or |
| 1305 | * global. Grouping is the default but due to multiplexing the |
| 1306 | * user may override. |
| 1307 | * @user_requested_cpu_list: Command line specified CPUs to record on. |
| 1308 | * @system_wide: Are events for all processes recorded. |
| 1309 | * @metric_list: The list that metrics are added to. |
| 1310 | * @table: The table that is searched for metrics, most commonly the table for the |
| 1311 | * architecture perf is running upon. |
| 1312 | */ |
| 1313 | static int metricgroup__add_metric_list(const char *pmu, const char *list, |
| 1314 | bool metric_no_group, |
| 1315 | bool metric_no_threshold, |
| 1316 | const char *user_requested_cpu_list, |
| 1317 | bool system_wide, struct list_head *metric_list, |
| 1318 | const struct pmu_metrics_table *table) |
| 1319 | { |
| 1320 | char *list_itr, *list_copy, *metric_name, *modifier; |
| 1321 | int ret, count = 0; |
| 1322 | |
| 1323 | list_copy = strdup(list); |
| 1324 | if (!list_copy) |
| 1325 | return -ENOMEM; |
| 1326 | list_itr = list_copy; |
| 1327 | |
| 1328 | while ((metric_name = strsep(&list_itr, ",")) != NULL) { |
| 1329 | modifier = strchr(metric_name, ':'); |
| 1330 | if (modifier) |
| 1331 | *modifier++ = '\0'; |
| 1332 | |
| 1333 | ret = metricgroup__add_metric(pmu, metric_name, modifier, |
| 1334 | metric_no_group, metric_no_threshold, |
| 1335 | user_requested_cpu_list, |
| 1336 | system_wide, metric_list, table); |
| 1337 | if (ret == -EINVAL) |
| 1338 | pr_err("Cannot find metric or group `%s'\n", metric_name); |
| 1339 | |
| 1340 | if (ret) |
| 1341 | break; |
| 1342 | |
| 1343 | count++; |
| 1344 | } |
| 1345 | free(list_copy); |
| 1346 | |
| 1347 | if (!ret) { |
| 1348 | /* |
| 1349 | * Warn about nmi_watchdog if any parsed metrics had the |
| 1350 | * NO_NMI_WATCHDOG constraint. |
| 1351 | */ |
| 1352 | metric__watchdog_constraint_hint(NULL, /*foot=*/true); |
| 1353 | /* No metrics. */ |
| 1354 | if (count == 0) |
| 1355 | return -EINVAL; |
| 1356 | } |
| 1357 | return ret; |
| 1358 | } |
| 1359 | |
| 1360 | static void metricgroup__free_metrics(struct list_head *metric_list) |
| 1361 | { |
| 1362 | struct metric *m, *tmp; |
| 1363 | |
| 1364 | list_for_each_entry_safe (m, tmp, metric_list, nd) { |
| 1365 | list_del_init(&m->nd); |
| 1366 | metric__free(m); |
| 1367 | } |
| 1368 | } |
| 1369 | |
| 1370 | /** |
| 1371 | * find_tool_events - Search for the pressence of tool events in metric_list. |
| 1372 | * @metric_list: List to take metrics from. |
| 1373 | * @tool_events: Array of false values, indices corresponding to tool events set |
| 1374 | * to true if tool event is found. |
| 1375 | */ |
| 1376 | static void find_tool_events(const struct list_head *metric_list, |
| 1377 | bool tool_events[PERF_TOOL_MAX]) |
| 1378 | { |
| 1379 | struct metric *m; |
| 1380 | |
| 1381 | list_for_each_entry(m, metric_list, nd) { |
| 1382 | int i; |
| 1383 | |
| 1384 | perf_tool_event__for_each_event(i) { |
| 1385 | struct expr_id_data *data; |
| 1386 | |
| 1387 | if (!tool_events[i] && |
| 1388 | !expr__get_id(m->pctx, perf_tool_event__to_str(i), &data)) |
| 1389 | tool_events[i] = true; |
| 1390 | } |
| 1391 | } |
| 1392 | } |
| 1393 | |
| 1394 | /** |
| 1395 | * build_combined_expr_ctx - Make an expr_parse_ctx with all !group_events |
| 1396 | * metric IDs, as the IDs are held in a set, |
| 1397 | * duplicates will be removed. |
| 1398 | * @metric_list: List to take metrics from. |
| 1399 | * @combined: Out argument for result. |
| 1400 | */ |
| 1401 | static int build_combined_expr_ctx(const struct list_head *metric_list, |
| 1402 | struct expr_parse_ctx **combined) |
| 1403 | { |
| 1404 | struct hashmap_entry *cur; |
| 1405 | size_t bkt; |
| 1406 | struct metric *m; |
| 1407 | char *dup; |
| 1408 | int ret; |
| 1409 | |
| 1410 | *combined = expr__ctx_new(); |
| 1411 | if (!*combined) |
| 1412 | return -ENOMEM; |
| 1413 | |
| 1414 | list_for_each_entry(m, metric_list, nd) { |
| 1415 | if (!m->group_events && !m->modifier) { |
| 1416 | hashmap__for_each_entry(m->pctx->ids, cur, bkt) { |
| 1417 | dup = strdup(cur->pkey); |
| 1418 | if (!dup) { |
| 1419 | ret = -ENOMEM; |
| 1420 | goto err_out; |
| 1421 | } |
| 1422 | ret = expr__add_id(*combined, dup); |
| 1423 | if (ret) |
| 1424 | goto err_out; |
| 1425 | } |
| 1426 | } |
| 1427 | } |
| 1428 | return 0; |
| 1429 | err_out: |
| 1430 | expr__ctx_free(*combined); |
| 1431 | *combined = NULL; |
| 1432 | return ret; |
| 1433 | } |
| 1434 | |
| 1435 | /** |
| 1436 | * parse_ids - Build the event string for the ids and parse them creating an |
| 1437 | * evlist. The encoded metric_ids are decoded. |
| 1438 | * @metric_no_merge: is metric sharing explicitly disabled. |
| 1439 | * @fake_pmu: use a fake PMU when testing metrics not supported by the current CPU. |
| 1440 | * @ids: the event identifiers parsed from a metric. |
| 1441 | * @modifier: any modifiers added to the events. |
| 1442 | * @group_events: should events be placed in a weak group. |
| 1443 | * @tool_events: entries set true if the tool event of index could be present in |
| 1444 | * the overall list of metrics. |
| 1445 | * @out_evlist: the created list of events. |
| 1446 | */ |
| 1447 | static int parse_ids(bool metric_no_merge, bool fake_pmu, |
| 1448 | struct expr_parse_ctx *ids, const char *modifier, |
| 1449 | bool group_events, const bool tool_events[PERF_TOOL_MAX], |
| 1450 | struct evlist **out_evlist) |
| 1451 | { |
| 1452 | struct parse_events_error parse_error; |
| 1453 | struct evlist *parsed_evlist; |
| 1454 | struct strbuf events = STRBUF_INIT; |
| 1455 | int ret; |
| 1456 | |
| 1457 | *out_evlist = NULL; |
| 1458 | if (!metric_no_merge || hashmap__size(ids->ids) == 0) { |
| 1459 | bool added_event = false; |
| 1460 | int i; |
| 1461 | /* |
| 1462 | * We may fail to share events between metrics because a tool |
| 1463 | * event isn't present in one metric. For example, a ratio of |
| 1464 | * cache misses doesn't need duration_time but the same events |
| 1465 | * may be used for a misses per second. Events without sharing |
| 1466 | * implies multiplexing, that is best avoided, so place |
| 1467 | * all tool events in every group. |
| 1468 | * |
| 1469 | * Also, there may be no ids/events in the expression parsing |
| 1470 | * context because of constant evaluation, e.g.: |
| 1471 | * event1 if #smt_on else 0 |
| 1472 | * Add a tool event to avoid a parse error on an empty string. |
| 1473 | */ |
| 1474 | perf_tool_event__for_each_event(i) { |
| 1475 | if (tool_events[i]) { |
| 1476 | char *tmp = strdup(perf_tool_event__to_str(i)); |
| 1477 | |
| 1478 | if (!tmp) |
| 1479 | return -ENOMEM; |
| 1480 | ids__insert(ids->ids, tmp); |
| 1481 | added_event = true; |
| 1482 | } |
| 1483 | } |
| 1484 | if (!added_event && hashmap__size(ids->ids) == 0) { |
| 1485 | char *tmp = strdup("duration_time"); |
| 1486 | |
| 1487 | if (!tmp) |
| 1488 | return -ENOMEM; |
| 1489 | ids__insert(ids->ids, tmp); |
| 1490 | } |
| 1491 | } |
| 1492 | ret = metricgroup__build_event_string(&events, ids, modifier, |
| 1493 | group_events); |
| 1494 | if (ret) |
| 1495 | return ret; |
| 1496 | |
| 1497 | parsed_evlist = evlist__new(); |
| 1498 | if (!parsed_evlist) { |
| 1499 | ret = -ENOMEM; |
| 1500 | goto err_out; |
| 1501 | } |
| 1502 | pr_debug("Parsing metric events '%s'\n", events.buf); |
| 1503 | parse_events_error__init(&parse_error); |
| 1504 | ret = __parse_events(parsed_evlist, events.buf, /*pmu_filter=*/NULL, |
| 1505 | &parse_error, fake_pmu, /*warn_if_reordered=*/false, |
| 1506 | /*fake_tp=*/false); |
| 1507 | if (ret) { |
| 1508 | parse_events_error__print(&parse_error, events.buf); |
| 1509 | goto err_out; |
| 1510 | } |
| 1511 | ret = decode_all_metric_ids(parsed_evlist, modifier); |
| 1512 | if (ret) |
| 1513 | goto err_out; |
| 1514 | |
| 1515 | *out_evlist = parsed_evlist; |
| 1516 | parsed_evlist = NULL; |
| 1517 | err_out: |
| 1518 | parse_events_error__exit(&parse_error); |
| 1519 | evlist__delete(parsed_evlist); |
| 1520 | strbuf_release(&events); |
| 1521 | return ret; |
| 1522 | } |
| 1523 | |
| 1524 | static int parse_groups(struct evlist *perf_evlist, |
| 1525 | const char *pmu, const char *str, |
| 1526 | bool metric_no_group, |
| 1527 | bool metric_no_merge, |
| 1528 | bool metric_no_threshold, |
| 1529 | const char *user_requested_cpu_list, |
| 1530 | bool system_wide, |
| 1531 | bool fake_pmu, |
| 1532 | struct rblist *metric_events_list, |
| 1533 | const struct pmu_metrics_table *table) |
| 1534 | { |
| 1535 | struct evlist *combined_evlist = NULL; |
| 1536 | LIST_HEAD(metric_list); |
| 1537 | struct metric *m; |
| 1538 | bool tool_events[PERF_TOOL_MAX] = {false}; |
| 1539 | bool is_default = !strcmp(str, "Default"); |
| 1540 | int ret; |
| 1541 | |
| 1542 | if (metric_events_list->nr_entries == 0) |
| 1543 | metricgroup__rblist_init(metric_events_list); |
| 1544 | ret = metricgroup__add_metric_list(pmu, str, metric_no_group, metric_no_threshold, |
| 1545 | user_requested_cpu_list, |
| 1546 | system_wide, &metric_list, table); |
| 1547 | if (ret) |
| 1548 | goto out; |
| 1549 | |
| 1550 | /* Sort metrics from largest to smallest. */ |
| 1551 | list_sort(NULL, &metric_list, metric_list_cmp); |
| 1552 | |
| 1553 | if (!metric_no_merge) { |
| 1554 | struct expr_parse_ctx *combined = NULL; |
| 1555 | |
| 1556 | find_tool_events(&metric_list, tool_events); |
| 1557 | |
| 1558 | ret = build_combined_expr_ctx(&metric_list, &combined); |
| 1559 | |
| 1560 | if (!ret && combined && hashmap__size(combined->ids)) { |
| 1561 | ret = parse_ids(metric_no_merge, fake_pmu, combined, |
| 1562 | /*modifier=*/NULL, |
| 1563 | /*group_events=*/false, |
| 1564 | tool_events, |
| 1565 | &combined_evlist); |
| 1566 | } |
| 1567 | if (combined) |
| 1568 | expr__ctx_free(combined); |
| 1569 | |
| 1570 | if (ret) |
| 1571 | goto out; |
| 1572 | } |
| 1573 | |
| 1574 | if (is_default) |
| 1575 | list_sort(NULL, &metric_list, default_metricgroup_cmp); |
| 1576 | |
| 1577 | list_for_each_entry(m, &metric_list, nd) { |
| 1578 | struct metric_event *me; |
| 1579 | struct evsel **metric_events; |
| 1580 | struct evlist *metric_evlist = NULL; |
| 1581 | struct metric *n; |
| 1582 | struct metric_expr *expr; |
| 1583 | |
| 1584 | if (combined_evlist && !m->group_events) { |
| 1585 | metric_evlist = combined_evlist; |
| 1586 | } else if (!metric_no_merge) { |
| 1587 | /* |
| 1588 | * See if the IDs for this metric are a subset of an |
| 1589 | * earlier metric. |
| 1590 | */ |
| 1591 | list_for_each_entry(n, &metric_list, nd) { |
| 1592 | if (m == n) |
| 1593 | break; |
| 1594 | |
| 1595 | if (n->evlist == NULL) |
| 1596 | continue; |
| 1597 | |
| 1598 | if ((!m->modifier && n->modifier) || |
| 1599 | (m->modifier && !n->modifier) || |
| 1600 | (m->modifier && n->modifier && |
| 1601 | strcmp(m->modifier, n->modifier))) |
| 1602 | continue; |
| 1603 | |
| 1604 | if ((!m->pmu && n->pmu) || |
| 1605 | (m->pmu && !n->pmu) || |
| 1606 | (m->pmu && n->pmu && strcmp(m->pmu, n->pmu))) |
| 1607 | continue; |
| 1608 | |
| 1609 | if (expr__subset_of_ids(n->pctx, m->pctx)) { |
| 1610 | pr_debug("Events in '%s' fully contained within '%s'\n", |
| 1611 | m->metric_name, n->metric_name); |
| 1612 | metric_evlist = n->evlist; |
| 1613 | break; |
| 1614 | } |
| 1615 | |
| 1616 | } |
| 1617 | } |
| 1618 | if (!metric_evlist) { |
| 1619 | ret = parse_ids(metric_no_merge, fake_pmu, m->pctx, m->modifier, |
| 1620 | m->group_events, tool_events, &m->evlist); |
| 1621 | if (ret) |
| 1622 | goto out; |
| 1623 | |
| 1624 | metric_evlist = m->evlist; |
| 1625 | } |
| 1626 | ret = setup_metric_events(fake_pmu ? "all" : m->pmu, m->pctx->ids, |
| 1627 | metric_evlist, &metric_events); |
| 1628 | if (ret) { |
| 1629 | pr_err("Cannot resolve IDs for %s: %s\n", |
| 1630 | m->metric_name, m->metric_expr); |
| 1631 | goto out; |
| 1632 | } |
| 1633 | |
| 1634 | me = metricgroup__lookup(metric_events_list, metric_events[0], true); |
| 1635 | |
| 1636 | expr = malloc(sizeof(struct metric_expr)); |
| 1637 | if (!expr) { |
| 1638 | ret = -ENOMEM; |
| 1639 | free(metric_events); |
| 1640 | goto out; |
| 1641 | } |
| 1642 | |
| 1643 | expr->metric_refs = m->metric_refs; |
| 1644 | m->metric_refs = NULL; |
| 1645 | expr->metric_expr = m->metric_expr; |
| 1646 | if (m->modifier) { |
| 1647 | char *tmp; |
| 1648 | |
| 1649 | if (asprintf(&tmp, "%s:%s", m->metric_name, m->modifier) < 0) |
| 1650 | expr->metric_name = NULL; |
| 1651 | else |
| 1652 | expr->metric_name = tmp; |
| 1653 | } else |
| 1654 | expr->metric_name = strdup(m->metric_name); |
| 1655 | |
| 1656 | if (!expr->metric_name) { |
| 1657 | ret = -ENOMEM; |
| 1658 | free(metric_events); |
| 1659 | goto out; |
| 1660 | } |
| 1661 | expr->metric_threshold = m->metric_threshold; |
| 1662 | expr->metric_unit = m->metric_unit; |
| 1663 | expr->metric_events = metric_events; |
| 1664 | expr->runtime = m->pctx->sctx.runtime; |
| 1665 | expr->default_metricgroup_name = m->default_metricgroup_name; |
| 1666 | me->is_default = is_default; |
| 1667 | list_add(&expr->nd, &me->head); |
| 1668 | } |
| 1669 | |
| 1670 | |
| 1671 | if (combined_evlist) { |
| 1672 | evlist__splice_list_tail(perf_evlist, &combined_evlist->core.entries); |
| 1673 | evlist__delete(combined_evlist); |
| 1674 | } |
| 1675 | |
| 1676 | list_for_each_entry(m, &metric_list, nd) { |
| 1677 | if (m->evlist) |
| 1678 | evlist__splice_list_tail(perf_evlist, &m->evlist->core.entries); |
| 1679 | } |
| 1680 | |
| 1681 | out: |
| 1682 | metricgroup__free_metrics(&metric_list); |
| 1683 | return ret; |
| 1684 | } |
| 1685 | |
| 1686 | int metricgroup__parse_groups(struct evlist *perf_evlist, |
| 1687 | const char *pmu, |
| 1688 | const char *str, |
| 1689 | bool metric_no_group, |
| 1690 | bool metric_no_merge, |
| 1691 | bool metric_no_threshold, |
| 1692 | const char *user_requested_cpu_list, |
| 1693 | bool system_wide, |
| 1694 | bool hardware_aware_grouping, |
| 1695 | struct rblist *metric_events) |
| 1696 | { |
| 1697 | const struct pmu_metrics_table *table = pmu_metrics_table__find(); |
| 1698 | |
| 1699 | if (!table) |
| 1700 | return -EINVAL; |
| 1701 | if (hardware_aware_grouping) |
| 1702 | pr_debug("Use hardware aware grouping instead of traditional metric grouping method\n"); |
| 1703 | |
| 1704 | return parse_groups(perf_evlist, pmu, str, metric_no_group, metric_no_merge, |
| 1705 | metric_no_threshold, user_requested_cpu_list, system_wide, |
| 1706 | /*fake_pmu=*/false, metric_events, table); |
| 1707 | } |
| 1708 | |
| 1709 | int metricgroup__parse_groups_test(struct evlist *evlist, |
| 1710 | const struct pmu_metrics_table *table, |
| 1711 | const char *str, |
| 1712 | struct rblist *metric_events) |
| 1713 | { |
| 1714 | return parse_groups(evlist, "all", str, |
| 1715 | /*metric_no_group=*/false, |
| 1716 | /*metric_no_merge=*/false, |
| 1717 | /*metric_no_threshold=*/false, |
| 1718 | /*user_requested_cpu_list=*/NULL, |
| 1719 | /*system_wide=*/false, |
| 1720 | /*fake_pmu=*/true, metric_events, table); |
| 1721 | } |
| 1722 | |
| 1723 | struct metricgroup__has_metric_data { |
| 1724 | const char *pmu; |
| 1725 | const char *metric; |
| 1726 | }; |
| 1727 | static int metricgroup__has_metric_callback(const struct pmu_metric *pm, |
| 1728 | const struct pmu_metrics_table *table __maybe_unused, |
| 1729 | void *vdata) |
| 1730 | { |
| 1731 | struct metricgroup__has_metric_data *data = vdata; |
| 1732 | |
| 1733 | return match_pm_metric(pm, data->pmu, data->metric) ? 1 : 0; |
| 1734 | } |
| 1735 | |
| 1736 | bool metricgroup__has_metric(const char *pmu, const char *metric) |
| 1737 | { |
| 1738 | const struct pmu_metrics_table *table = pmu_metrics_table__find(); |
| 1739 | struct metricgroup__has_metric_data data = { |
| 1740 | .pmu = pmu, |
| 1741 | .metric = metric, |
| 1742 | }; |
| 1743 | |
| 1744 | if (!table) |
| 1745 | return false; |
| 1746 | |
| 1747 | return pmu_metrics_table__for_each_metric(table, metricgroup__has_metric_callback, &data) |
| 1748 | ? true : false; |
| 1749 | } |
| 1750 | |
| 1751 | static int metricgroup__topdown_max_level_callback(const struct pmu_metric *pm, |
| 1752 | const struct pmu_metrics_table *table __maybe_unused, |
| 1753 | void *data) |
| 1754 | { |
| 1755 | unsigned int *max_level = data; |
| 1756 | unsigned int level; |
| 1757 | const char *p = strstr(pm->metric_group ?: "", "TopdownL"); |
| 1758 | |
| 1759 | if (!p || p[8] == '\0') |
| 1760 | return 0; |
| 1761 | |
| 1762 | level = p[8] - '0'; |
| 1763 | if (level > *max_level) |
| 1764 | *max_level = level; |
| 1765 | |
| 1766 | return 0; |
| 1767 | } |
| 1768 | |
| 1769 | unsigned int metricgroups__topdown_max_level(void) |
| 1770 | { |
| 1771 | unsigned int max_level = 0; |
| 1772 | const struct pmu_metrics_table *table = pmu_metrics_table__find(); |
| 1773 | |
| 1774 | if (!table) |
| 1775 | return false; |
| 1776 | |
| 1777 | pmu_metrics_table__for_each_metric(table, metricgroup__topdown_max_level_callback, |
| 1778 | &max_level); |
| 1779 | return max_level; |
| 1780 | } |
| 1781 | |
| 1782 | int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp, |
| 1783 | struct rblist *new_metric_events, |
| 1784 | struct rblist *old_metric_events) |
| 1785 | { |
| 1786 | unsigned int i; |
| 1787 | |
| 1788 | for (i = 0; i < rblist__nr_entries(old_metric_events); i++) { |
| 1789 | struct rb_node *nd; |
| 1790 | struct metric_event *old_me, *new_me; |
| 1791 | struct metric_expr *old_expr, *new_expr; |
| 1792 | struct evsel *evsel; |
| 1793 | size_t alloc_size; |
| 1794 | int idx, nr; |
| 1795 | |
| 1796 | nd = rblist__entry(old_metric_events, i); |
| 1797 | old_me = container_of(nd, struct metric_event, nd); |
| 1798 | |
| 1799 | evsel = evlist__find_evsel(evlist, old_me->evsel->core.idx); |
| 1800 | if (!evsel) |
| 1801 | return -EINVAL; |
| 1802 | new_me = metricgroup__lookup(new_metric_events, evsel, true); |
| 1803 | if (!new_me) |
| 1804 | return -ENOMEM; |
| 1805 | |
| 1806 | pr_debug("copying metric event for cgroup '%s': %s (idx=%d)\n", |
| 1807 | cgrp ? cgrp->name : "root", evsel->name, evsel->core.idx); |
| 1808 | |
| 1809 | list_for_each_entry(old_expr, &old_me->head, nd) { |
| 1810 | new_expr = malloc(sizeof(*new_expr)); |
| 1811 | if (!new_expr) |
| 1812 | return -ENOMEM; |
| 1813 | |
| 1814 | new_expr->metric_expr = old_expr->metric_expr; |
| 1815 | new_expr->metric_threshold = old_expr->metric_threshold; |
| 1816 | new_expr->metric_name = strdup(old_expr->metric_name); |
| 1817 | if (!new_expr->metric_name) |
| 1818 | return -ENOMEM; |
| 1819 | |
| 1820 | new_expr->metric_unit = old_expr->metric_unit; |
| 1821 | new_expr->runtime = old_expr->runtime; |
| 1822 | |
| 1823 | if (old_expr->metric_refs) { |
| 1824 | /* calculate number of metric_events */ |
| 1825 | for (nr = 0; old_expr->metric_refs[nr].metric_name; nr++) |
| 1826 | continue; |
| 1827 | alloc_size = sizeof(*new_expr->metric_refs); |
| 1828 | new_expr->metric_refs = calloc(nr + 1, alloc_size); |
| 1829 | if (!new_expr->metric_refs) { |
| 1830 | free(new_expr); |
| 1831 | return -ENOMEM; |
| 1832 | } |
| 1833 | |
| 1834 | memcpy(new_expr->metric_refs, old_expr->metric_refs, |
| 1835 | nr * alloc_size); |
| 1836 | } else { |
| 1837 | new_expr->metric_refs = NULL; |
| 1838 | } |
| 1839 | |
| 1840 | /* calculate number of metric_events */ |
| 1841 | for (nr = 0; old_expr->metric_events[nr]; nr++) |
| 1842 | continue; |
| 1843 | alloc_size = sizeof(*new_expr->metric_events); |
| 1844 | new_expr->metric_events = calloc(nr + 1, alloc_size); |
| 1845 | if (!new_expr->metric_events) { |
| 1846 | zfree(&new_expr->metric_refs); |
| 1847 | free(new_expr); |
| 1848 | return -ENOMEM; |
| 1849 | } |
| 1850 | |
| 1851 | /* copy evsel in the same position */ |
| 1852 | for (idx = 0; idx < nr; idx++) { |
| 1853 | evsel = old_expr->metric_events[idx]; |
| 1854 | evsel = evlist__find_evsel(evlist, evsel->core.idx); |
| 1855 | if (evsel == NULL) { |
| 1856 | zfree(&new_expr->metric_events); |
| 1857 | zfree(&new_expr->metric_refs); |
| 1858 | free(new_expr); |
| 1859 | return -EINVAL; |
| 1860 | } |
| 1861 | new_expr->metric_events[idx] = evsel; |
| 1862 | } |
| 1863 | |
| 1864 | list_add(&new_expr->nd, &new_me->head); |
| 1865 | } |
| 1866 | } |
| 1867 | return 0; |
| 1868 | } |