1 // SPDX-License-Identifier: GPL-2.0 2 #include "builtin.h" 3 #include "perf.h" 4 5 #include "util/build-id.h" 6 #include "util/evsel.h" 7 #include "util/evlist.h" 8 #include "util/mmap.h" 9 #include "util/term.h" 10 #include "util/symbol.h" 11 #include "util/thread.h" 12 #include "util/header.h" 13 #include "util/session.h" 14 #include "util/intlist.h" 15 #include <subcmd/pager.h> 16 #include <subcmd/parse-options.h> 17 #include "util/trace-event.h" 18 #include "util/debug.h" 19 #include "util/tool.h" 20 #include "util/stat.h" 21 #include "util/synthetic-events.h" 22 #include "util/top.h" 23 #include "util/data.h" 24 #include "util/ordered-events.h" 25 #include "util/kvm-stat.h" 26 #include "ui/browsers/hists.h" 27 #include "ui/progress.h" 28 #include "ui/ui.h" 29 #include "util/string2.h" 30 31 #include <sys/prctl.h> 32 #ifdef HAVE_TIMERFD_SUPPORT 33 #include <sys/timerfd.h> 34 #endif 35 #include <sys/time.h> 36 #include <sys/types.h> 37 #include <sys/stat.h> 38 #include <fcntl.h> 39 40 #include <linux/err.h> 41 #include <linux/kernel.h> 42 #include <linux/string.h> 43 #include <linux/time64.h> 44 #include <linux/zalloc.h> 45 #include <errno.h> 46 #include <inttypes.h> 47 #include <poll.h> 48 #include <termios.h> 49 #include <semaphore.h> 50 #include <signal.h> 51 #include <math.h> 52 #include <perf/mmap.h> 53 54 #if defined(HAVE_KVM_STAT_SUPPORT) && defined(HAVE_LIBTRACEEVENT) 55 #define GET_EVENT_KEY(func, field) \ 56 static u64 get_event_ ##func(struct kvm_event *event, int vcpu) \ 57 { \ 58 if (vcpu == -1) \ 59 return event->total.field; \ 60 \ 61 if (vcpu >= event->max_vcpu) \ 62 return 0; \ 63 \ 64 return event->vcpu[vcpu].field; \ 65 } 66 67 #define COMPARE_EVENT_KEY(func, field) \ 68 GET_EVENT_KEY(func, field) \ 69 static int64_t cmp_event_ ## func(struct kvm_event *one, \ 70 struct kvm_event *two, int vcpu) \ 71 { \ 72 return get_event_ ##func(one, vcpu) - \ 73 get_event_ ##func(two, vcpu); \ 74 } 75 76 COMPARE_EVENT_KEY(time, time); 77 COMPARE_EVENT_KEY(max, stats.max); 78 COMPARE_EVENT_KEY(min, stats.min); 79 COMPARE_EVENT_KEY(count, stats.n); 80 COMPARE_EVENT_KEY(mean, stats.mean); 81 82 struct kvm_hists { 83 struct hists hists; 84 struct perf_hpp_list list; 85 }; 86 87 struct kvm_dimension { 88 const char *name; 89 const char *header; 90 int width; 91 int64_t (*cmp)(struct perf_hpp_fmt *fmt, struct hist_entry *left, 92 struct hist_entry *right); 93 int (*entry)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, 94 struct hist_entry *he); 95 }; 96 97 struct kvm_fmt { 98 struct perf_hpp_fmt fmt; 99 struct kvm_dimension *dim; 100 }; 101 102 static struct kvm_hists kvm_hists; 103 104 static int64_t ev_name_cmp(struct perf_hpp_fmt *fmt __maybe_unused, 105 struct hist_entry *left, 106 struct hist_entry *right) 107 { 108 /* Return opposite number for sorting in alphabetical order */ 109 return -strcmp(left->kvm_info->name, right->kvm_info->name); 110 } 111 112 static int fmt_width(struct perf_hpp_fmt *fmt, 113 struct perf_hpp *hpp __maybe_unused, 114 struct hists *hists __maybe_unused); 115 116 static int ev_name_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, 117 struct hist_entry *he) 118 { 119 int width = fmt_width(fmt, hpp, he->hists); 120 121 return scnprintf(hpp->buf, hpp->size, "%*s", width, he->kvm_info->name); 122 } 123 124 static struct kvm_dimension dim_event = { 125 .header = "Event name", 126 .name = "ev_name", 127 .cmp = ev_name_cmp, 128 .entry = ev_name_entry, 129 .width = 40, 130 }; 131 132 #define EV_METRIC_CMP(metric) \ 133 static int64_t ev_cmp_##metric(struct perf_hpp_fmt *fmt __maybe_unused, \ 134 struct hist_entry *left, \ 135 struct hist_entry *right) \ 136 { \ 137 struct kvm_event *event_left; \ 138 struct kvm_event *event_right; \ 139 struct perf_kvm_stat *perf_kvm; \ 140 \ 141 event_left = container_of(left, struct kvm_event, he); \ 142 event_right = container_of(right, struct kvm_event, he); \ 143 \ 144 perf_kvm = event_left->perf_kvm; \ 145 return cmp_event_##metric(event_left, event_right, \ 146 perf_kvm->trace_vcpu); \ 147 } 148 149 EV_METRIC_CMP(time) 150 EV_METRIC_CMP(count) 151 EV_METRIC_CMP(max) 152 EV_METRIC_CMP(min) 153 EV_METRIC_CMP(mean) 154 155 #define EV_METRIC_ENTRY(metric) \ 156 static int ev_entry_##metric(struct perf_hpp_fmt *fmt, \ 157 struct perf_hpp *hpp, \ 158 struct hist_entry *he) \ 159 { \ 160 struct kvm_event *event; \ 161 int width = fmt_width(fmt, hpp, he->hists); \ 162 struct perf_kvm_stat *perf_kvm; \ 163 \ 164 event = container_of(he, struct kvm_event, he); \ 165 perf_kvm = event->perf_kvm; \ 166 return scnprintf(hpp->buf, hpp->size, "%*lu", width, \ 167 get_event_##metric(event, perf_kvm->trace_vcpu)); \ 168 } 169 170 EV_METRIC_ENTRY(time) 171 EV_METRIC_ENTRY(count) 172 EV_METRIC_ENTRY(max) 173 EV_METRIC_ENTRY(min) 174 175 static struct kvm_dimension dim_time = { 176 .header = "Time (ns)", 177 .name = "time", 178 .cmp = ev_cmp_time, 179 .entry = ev_entry_time, 180 .width = 12, 181 }; 182 183 static struct kvm_dimension dim_count = { 184 .header = "Samples", 185 .name = "sample", 186 .cmp = ev_cmp_count, 187 .entry = ev_entry_count, 188 .width = 12, 189 }; 190 191 static struct kvm_dimension dim_max_time = { 192 .header = "Max Time (ns)", 193 .name = "max_t", 194 .cmp = ev_cmp_max, 195 .entry = ev_entry_max, 196 .width = 14, 197 }; 198 199 static struct kvm_dimension dim_min_time = { 200 .header = "Min Time (ns)", 201 .name = "min_t", 202 .cmp = ev_cmp_min, 203 .entry = ev_entry_min, 204 .width = 14, 205 }; 206 207 static int ev_entry_mean(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, 208 struct hist_entry *he) 209 { 210 struct kvm_event *event; 211 int width = fmt_width(fmt, hpp, he->hists); 212 struct perf_kvm_stat *perf_kvm; 213 214 event = container_of(he, struct kvm_event, he); 215 perf_kvm = event->perf_kvm; 216 return scnprintf(hpp->buf, hpp->size, "%*lu", width, 217 get_event_mean(event, perf_kvm->trace_vcpu)); 218 } 219 220 static struct kvm_dimension dim_mean_time = { 221 .header = "Mean Time (ns)", 222 .name = "mean_t", 223 .cmp = ev_cmp_mean, 224 .entry = ev_entry_mean, 225 .width = 14, 226 }; 227 228 #define PERC_STR(__s, __v) \ 229 ({ \ 230 scnprintf(__s, sizeof(__s), "%.2F%%", __v); \ 231 __s; \ 232 }) 233 234 static double percent(u64 st, u64 tot) 235 { 236 return tot ? 100. * (double) st / (double) tot : 0; 237 } 238 239 #define EV_METRIC_PERCENT(metric) \ 240 static int ev_percent_##metric(struct hist_entry *he) \ 241 { \ 242 struct kvm_event *event; \ 243 struct perf_kvm_stat *perf_kvm; \ 244 \ 245 event = container_of(he, struct kvm_event, he); \ 246 perf_kvm = event->perf_kvm; \ 247 \ 248 return percent(get_event_##metric(event, perf_kvm->trace_vcpu), \ 249 perf_kvm->total_##metric); \ 250 } 251 252 EV_METRIC_PERCENT(time) 253 EV_METRIC_PERCENT(count) 254 255 static int ev_entry_time_precent(struct perf_hpp_fmt *fmt, 256 struct perf_hpp *hpp, 257 struct hist_entry *he) 258 { 259 int width = fmt_width(fmt, hpp, he->hists); 260 double per; 261 char buf[10]; 262 263 per = ev_percent_time(he); 264 return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per)); 265 } 266 267 static int64_t 268 ev_cmp_time_precent(struct perf_hpp_fmt *fmt __maybe_unused, 269 struct hist_entry *left, struct hist_entry *right) 270 { 271 double per_left; 272 double per_right; 273 274 per_left = ev_percent_time(left); 275 per_right = ev_percent_time(right); 276 277 return per_left - per_right; 278 } 279 280 static struct kvm_dimension dim_time_percent = { 281 .header = "Time%", 282 .name = "percent_time", 283 .cmp = ev_cmp_time_precent, 284 .entry = ev_entry_time_precent, 285 .width = 12, 286 }; 287 288 static int ev_entry_count_precent(struct perf_hpp_fmt *fmt, 289 struct perf_hpp *hpp, 290 struct hist_entry *he) 291 { 292 int width = fmt_width(fmt, hpp, he->hists); 293 double per; 294 char buf[10]; 295 296 per = ev_percent_count(he); 297 return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per)); 298 } 299 300 static int64_t 301 ev_cmp_count_precent(struct perf_hpp_fmt *fmt __maybe_unused, 302 struct hist_entry *left, struct hist_entry *right) 303 { 304 double per_left; 305 double per_right; 306 307 per_left = ev_percent_count(left); 308 per_right = ev_percent_count(right); 309 310 return per_left - per_right; 311 } 312 313 static struct kvm_dimension dim_count_percent = { 314 .header = "Sample%", 315 .name = "percent_sample", 316 .cmp = ev_cmp_count_precent, 317 .entry = ev_entry_count_precent, 318 .width = 12, 319 }; 320 321 static struct kvm_dimension *dimensions[] = { 322 &dim_event, 323 &dim_time, 324 &dim_time_percent, 325 &dim_count, 326 &dim_count_percent, 327 &dim_max_time, 328 &dim_min_time, 329 &dim_mean_time, 330 NULL, 331 }; 332 333 static int fmt_width(struct perf_hpp_fmt *fmt, 334 struct perf_hpp *hpp __maybe_unused, 335 struct hists *hists __maybe_unused) 336 { 337 struct kvm_fmt *kvm_fmt; 338 339 kvm_fmt = container_of(fmt, struct kvm_fmt, fmt); 340 return kvm_fmt->dim->width; 341 } 342 343 static int fmt_header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, 344 struct hists *hists, int line __maybe_unused, 345 int *span __maybe_unused) 346 { 347 struct kvm_fmt *kvm_fmt; 348 struct kvm_dimension *dim; 349 int width = fmt_width(fmt, hpp, hists); 350 351 kvm_fmt = container_of(fmt, struct kvm_fmt, fmt); 352 dim = kvm_fmt->dim; 353 354 return scnprintf(hpp->buf, hpp->size, "%*s", width, dim->header); 355 } 356 357 static bool fmt_equal(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b) 358 { 359 struct kvm_fmt *kvm_fmt_a = container_of(a, struct kvm_fmt, fmt); 360 struct kvm_fmt *kvm_fmt_b = container_of(b, struct kvm_fmt, fmt); 361 362 return kvm_fmt_a->dim == kvm_fmt_b->dim; 363 } 364 365 static void fmt_free(struct perf_hpp_fmt *fmt) 366 { 367 struct kvm_fmt *kvm_fmt; 368 369 kvm_fmt = container_of(fmt, struct kvm_fmt, fmt); 370 free(kvm_fmt); 371 } 372 373 static struct kvm_dimension *get_dimension(const char *name) 374 { 375 unsigned int i; 376 377 for (i = 0; dimensions[i] != NULL; i++) { 378 if (!strcmp(dimensions[i]->name, name)) 379 return dimensions[i]; 380 } 381 382 return NULL; 383 } 384 385 static struct kvm_fmt *get_format(const char *name) 386 { 387 struct kvm_dimension *dim = get_dimension(name); 388 struct kvm_fmt *kvm_fmt; 389 struct perf_hpp_fmt *fmt; 390 391 if (!dim) 392 return NULL; 393 394 kvm_fmt = zalloc(sizeof(*kvm_fmt)); 395 if (!kvm_fmt) 396 return NULL; 397 398 kvm_fmt->dim = dim; 399 400 fmt = &kvm_fmt->fmt; 401 INIT_LIST_HEAD(&fmt->list); 402 INIT_LIST_HEAD(&fmt->sort_list); 403 fmt->cmp = dim->cmp; 404 fmt->sort = dim->cmp; 405 fmt->color = NULL; 406 fmt->entry = dim->entry; 407 fmt->header = fmt_header; 408 fmt->width = fmt_width; 409 fmt->collapse = dim->cmp; 410 fmt->equal = fmt_equal; 411 fmt->free = fmt_free; 412 413 return kvm_fmt; 414 } 415 416 static int kvm_hists__init_output(struct perf_hpp_list *hpp_list, char *name) 417 { 418 struct kvm_fmt *kvm_fmt = get_format(name); 419 420 if (!kvm_fmt) { 421 pr_warning("Fail to find format for output field %s.\n", name); 422 return -EINVAL; 423 } 424 425 perf_hpp_list__column_register(hpp_list, &kvm_fmt->fmt); 426 return 0; 427 } 428 429 static int kvm_hists__init_sort(struct perf_hpp_list *hpp_list, char *name) 430 { 431 struct kvm_fmt *kvm_fmt = get_format(name); 432 433 if (!kvm_fmt) { 434 pr_warning("Fail to find format for sorting %s.\n", name); 435 return -EINVAL; 436 } 437 438 perf_hpp_list__register_sort_field(hpp_list, &kvm_fmt->fmt); 439 return 0; 440 } 441 442 static int kvm_hpp_list__init(char *list, 443 struct perf_hpp_list *hpp_list, 444 int (*fn)(struct perf_hpp_list *hpp_list, 445 char *name)) 446 { 447 char *tmp, *tok; 448 int ret; 449 450 if (!list || !fn) 451 return 0; 452 453 for (tok = strtok_r(list, ", ", &tmp); tok; 454 tok = strtok_r(NULL, ", ", &tmp)) { 455 ret = fn(hpp_list, tok); 456 if (!ret) 457 continue; 458 459 /* Handle errors */ 460 if (ret == -EINVAL) 461 pr_err("Invalid field key: '%s'", tok); 462 else if (ret == -ESRCH) 463 pr_err("Unknown field key: '%s'", tok); 464 else 465 pr_err("Fail to initialize for field key: '%s'", tok); 466 467 break; 468 } 469 470 return ret; 471 } 472 473 static int kvm_hpp_list__parse(struct perf_hpp_list *hpp_list, 474 const char *output_, const char *sort_) 475 { 476 char *output = output_ ? strdup(output_) : NULL; 477 char *sort = sort_ ? strdup(sort_) : NULL; 478 int ret; 479 480 ret = kvm_hpp_list__init(output, hpp_list, kvm_hists__init_output); 481 if (ret) 482 goto out; 483 484 ret = kvm_hpp_list__init(sort, hpp_list, kvm_hists__init_sort); 485 if (ret) 486 goto out; 487 488 /* Copy sort keys to output fields */ 489 perf_hpp__setup_output_field(hpp_list); 490 491 /* and then copy output fields to sort keys */ 492 perf_hpp__append_sort_keys(hpp_list); 493 out: 494 free(output); 495 free(sort); 496 return ret; 497 } 498 499 static int kvm_hists__init(void) 500 { 501 kvm_hists.list.nr_header_lines = 1; 502 __hists__init(&kvm_hists.hists, &kvm_hists.list); 503 perf_hpp_list__init(&kvm_hists.list); 504 return kvm_hpp_list__parse(&kvm_hists.list, NULL, "ev_name"); 505 } 506 507 static int kvm_hists__reinit(const char *output, const char *sort) 508 { 509 perf_hpp__reset_output_field(&kvm_hists.list); 510 return kvm_hpp_list__parse(&kvm_hists.list, output, sort); 511 } 512 static void print_result(struct perf_kvm_stat *kvm); 513 514 #ifdef HAVE_SLANG_SUPPORT 515 static void kvm_browser__update_nr_entries(struct hist_browser *hb) 516 { 517 struct rb_node *nd = rb_first_cached(&hb->hists->entries); 518 u64 nr_entries = 0; 519 520 for (; nd; nd = rb_next(nd)) { 521 struct hist_entry *he = rb_entry(nd, struct hist_entry, 522 rb_node); 523 524 if (!he->filtered) 525 nr_entries++; 526 } 527 528 hb->nr_non_filtered_entries = nr_entries; 529 } 530 531 static int kvm_browser__title(struct hist_browser *browser, 532 char *buf, size_t size) 533 { 534 scnprintf(buf, size, "KVM event statistics (%lu entries)", 535 browser->nr_non_filtered_entries); 536 return 0; 537 } 538 539 static struct hist_browser* 540 perf_kvm_browser__new(struct hists *hists) 541 { 542 struct hist_browser *browser = hist_browser__new(hists); 543 544 if (browser) 545 browser->title = kvm_browser__title; 546 547 return browser; 548 } 549 550 static int kvm__hists_browse(struct hists *hists) 551 { 552 struct hist_browser *browser; 553 int key = -1; 554 555 browser = perf_kvm_browser__new(hists); 556 if (browser == NULL) 557 return -1; 558 559 /* reset abort key so that it can get Ctrl-C as a key */ 560 SLang_reset_tty(); 561 SLang_init_tty(0, 0, 0); 562 563 kvm_browser__update_nr_entries(browser); 564 565 while (1) { 566 key = hist_browser__run(browser, "? - help", true, 0); 567 568 switch (key) { 569 case 'q': 570 goto out; 571 default: 572 break; 573 } 574 } 575 576 out: 577 hist_browser__delete(browser); 578 return 0; 579 } 580 581 static void kvm_display(struct perf_kvm_stat *kvm) 582 { 583 if (!use_browser) 584 print_result(kvm); 585 else 586 kvm__hists_browse(&kvm_hists.hists); 587 } 588 589 #else 590 591 static void kvm_display(struct perf_kvm_stat *kvm) 592 { 593 use_browser = 0; 594 print_result(kvm); 595 } 596 597 #endif /* HAVE_SLANG_SUPPORT */ 598 599 #endif // defined(HAVE_KVM_STAT_SUPPORT) && defined(HAVE_LIBTRACEEVENT) 600 601 static const char *get_filename_for_perf_kvm(void) 602 { 603 const char *filename; 604 605 if (perf_host && !perf_guest) 606 filename = strdup("perf.data.host"); 607 else if (!perf_host && perf_guest) 608 filename = strdup("perf.data.guest"); 609 else 610 filename = strdup("perf.data.kvm"); 611 612 return filename; 613 } 614 615 #if defined(HAVE_KVM_STAT_SUPPORT) && defined(HAVE_LIBTRACEEVENT) 616 617 void exit_event_get_key(struct evsel *evsel, 618 struct perf_sample *sample, 619 struct event_key *key) 620 { 621 key->info = 0; 622 key->key = evsel__intval(evsel, sample, kvm_exit_reason); 623 } 624 625 bool kvm_exit_event(struct evsel *evsel) 626 { 627 return !strcmp(evsel->name, kvm_exit_trace); 628 } 629 630 bool exit_event_begin(struct evsel *evsel, 631 struct perf_sample *sample, struct event_key *key) 632 { 633 if (kvm_exit_event(evsel)) { 634 exit_event_get_key(evsel, sample, key); 635 return true; 636 } 637 638 return false; 639 } 640 641 bool kvm_entry_event(struct evsel *evsel) 642 { 643 return !strcmp(evsel->name, kvm_entry_trace); 644 } 645 646 bool exit_event_end(struct evsel *evsel, 647 struct perf_sample *sample __maybe_unused, 648 struct event_key *key __maybe_unused) 649 { 650 return kvm_entry_event(evsel); 651 } 652 653 static const char *get_exit_reason(struct perf_kvm_stat *kvm, 654 struct exit_reasons_table *tbl, 655 u64 exit_code) 656 { 657 while (tbl->reason != NULL) { 658 if (tbl->exit_code == exit_code) 659 return tbl->reason; 660 tbl++; 661 } 662 663 pr_err("unknown kvm exit code:%lld on %s\n", 664 (unsigned long long)exit_code, kvm->exit_reasons_isa); 665 return "UNKNOWN"; 666 } 667 668 void exit_event_decode_key(struct perf_kvm_stat *kvm, 669 struct event_key *key, 670 char *decode) 671 { 672 const char *exit_reason = get_exit_reason(kvm, key->exit_reasons, 673 key->key); 674 675 scnprintf(decode, KVM_EVENT_NAME_LEN, "%s", exit_reason); 676 } 677 678 static bool register_kvm_events_ops(struct perf_kvm_stat *kvm) 679 { 680 struct kvm_reg_events_ops *events_ops = kvm_reg_events_ops; 681 682 for (events_ops = kvm_reg_events_ops; events_ops->name; events_ops++) { 683 if (!strcmp(events_ops->name, kvm->report_event)) { 684 kvm->events_ops = events_ops->ops; 685 return true; 686 } 687 } 688 689 return false; 690 } 691 692 struct vcpu_event_record { 693 int vcpu_id; 694 u64 start_time; 695 struct kvm_event *last_event; 696 }; 697 698 #ifdef HAVE_TIMERFD_SUPPORT 699 static void clear_events_cache_stats(void) 700 { 701 struct rb_root_cached *root; 702 struct rb_node *nd; 703 struct kvm_event *event; 704 int i; 705 706 if (hists__has(&kvm_hists.hists, need_collapse)) 707 root = &kvm_hists.hists.entries_collapsed; 708 else 709 root = kvm_hists.hists.entries_in; 710 711 for (nd = rb_first_cached(root); nd; nd = rb_next(nd)) { 712 struct hist_entry *he; 713 714 he = rb_entry(nd, struct hist_entry, rb_node_in); 715 event = container_of(he, struct kvm_event, he); 716 717 /* reset stats for event */ 718 event->total.time = 0; 719 init_stats(&event->total.stats); 720 721 for (i = 0; i < event->max_vcpu; ++i) { 722 event->vcpu[i].time = 0; 723 init_stats(&event->vcpu[i].stats); 724 } 725 } 726 } 727 #endif 728 729 static bool kvm_event_expand(struct kvm_event *event, int vcpu_id) 730 { 731 int old_max_vcpu = event->max_vcpu; 732 void *prev; 733 734 if (vcpu_id < event->max_vcpu) 735 return true; 736 737 while (event->max_vcpu <= vcpu_id) 738 event->max_vcpu += DEFAULT_VCPU_NUM; 739 740 prev = event->vcpu; 741 event->vcpu = realloc(event->vcpu, 742 event->max_vcpu * sizeof(*event->vcpu)); 743 if (!event->vcpu) { 744 free(prev); 745 pr_err("Not enough memory\n"); 746 return false; 747 } 748 749 memset(event->vcpu + old_max_vcpu, 0, 750 (event->max_vcpu - old_max_vcpu) * sizeof(*event->vcpu)); 751 return true; 752 } 753 754 static void *kvm_he_zalloc(size_t size) 755 { 756 struct kvm_event *kvm_ev; 757 758 kvm_ev = zalloc(size + sizeof(*kvm_ev)); 759 if (!kvm_ev) 760 return NULL; 761 762 init_stats(&kvm_ev->total.stats); 763 hists__inc_nr_samples(&kvm_hists.hists, 0); 764 return &kvm_ev->he; 765 } 766 767 static void kvm_he_free(void *he) 768 { 769 struct kvm_event *kvm_ev; 770 771 kvm_ev = container_of(he, struct kvm_event, he); 772 free(kvm_ev); 773 } 774 775 static struct hist_entry_ops kvm_ev_entry_ops = { 776 .new = kvm_he_zalloc, 777 .free = kvm_he_free, 778 }; 779 780 static struct kvm_event *find_create_kvm_event(struct perf_kvm_stat *kvm, 781 struct event_key *key, 782 struct perf_sample *sample) 783 { 784 struct kvm_event *event; 785 struct hist_entry *he; 786 struct kvm_info *ki; 787 788 BUG_ON(key->key == INVALID_KEY); 789 790 ki = kvm_info__new(); 791 if (!ki) { 792 pr_err("Failed to allocate kvm info\n"); 793 return NULL; 794 } 795 796 kvm->events_ops->decode_key(kvm, key, ki->name); 797 he = hists__add_entry_ops(&kvm_hists.hists, &kvm_ev_entry_ops, 798 &kvm->al, NULL, NULL, NULL, ki, sample, true); 799 if (he == NULL) { 800 pr_err("Failed to allocate hist entry\n"); 801 free(ki); 802 return NULL; 803 } 804 805 event = container_of(he, struct kvm_event, he); 806 if (!event->perf_kvm) { 807 event->perf_kvm = kvm; 808 event->key = *key; 809 } 810 811 return event; 812 } 813 814 static bool handle_begin_event(struct perf_kvm_stat *kvm, 815 struct vcpu_event_record *vcpu_record, 816 struct event_key *key, 817 struct perf_sample *sample) 818 { 819 struct kvm_event *event = NULL; 820 821 if (key->key != INVALID_KEY) 822 event = find_create_kvm_event(kvm, key, sample); 823 824 vcpu_record->last_event = event; 825 vcpu_record->start_time = sample->time; 826 return true; 827 } 828 829 static void 830 kvm_update_event_stats(struct kvm_event_stats *kvm_stats, u64 time_diff) 831 { 832 kvm_stats->time += time_diff; 833 update_stats(&kvm_stats->stats, time_diff); 834 } 835 836 static double kvm_event_rel_stddev(int vcpu_id, struct kvm_event *event) 837 { 838 struct kvm_event_stats *kvm_stats = &event->total; 839 840 if (vcpu_id != -1) 841 kvm_stats = &event->vcpu[vcpu_id]; 842 843 return rel_stddev_stats(stddev_stats(&kvm_stats->stats), 844 avg_stats(&kvm_stats->stats)); 845 } 846 847 static bool update_kvm_event(struct perf_kvm_stat *kvm, 848 struct kvm_event *event, int vcpu_id, 849 u64 time_diff) 850 { 851 /* Update overall statistics */ 852 kvm->total_count++; 853 kvm->total_time += time_diff; 854 855 if (vcpu_id == -1) { 856 kvm_update_event_stats(&event->total, time_diff); 857 return true; 858 } 859 860 if (!kvm_event_expand(event, vcpu_id)) 861 return false; 862 863 kvm_update_event_stats(&event->vcpu[vcpu_id], time_diff); 864 return true; 865 } 866 867 static bool is_child_event(struct perf_kvm_stat *kvm, 868 struct evsel *evsel, 869 struct perf_sample *sample, 870 struct event_key *key) 871 { 872 struct child_event_ops *child_ops; 873 874 child_ops = kvm->events_ops->child_ops; 875 876 if (!child_ops) 877 return false; 878 879 for (; child_ops->name; child_ops++) { 880 if (!strcmp(evsel->name, child_ops->name)) { 881 child_ops->get_key(evsel, sample, key); 882 return true; 883 } 884 } 885 886 return false; 887 } 888 889 static bool handle_child_event(struct perf_kvm_stat *kvm, 890 struct vcpu_event_record *vcpu_record, 891 struct event_key *key, 892 struct perf_sample *sample) 893 { 894 struct kvm_event *event = NULL; 895 896 if (key->key != INVALID_KEY) 897 event = find_create_kvm_event(kvm, key, sample); 898 899 vcpu_record->last_event = event; 900 901 return true; 902 } 903 904 static bool skip_event(const char *event) 905 { 906 const char * const *skip_events; 907 908 for (skip_events = kvm_skip_events; *skip_events; skip_events++) 909 if (!strcmp(event, *skip_events)) 910 return true; 911 912 return false; 913 } 914 915 static bool handle_end_event(struct perf_kvm_stat *kvm, 916 struct vcpu_event_record *vcpu_record, 917 struct event_key *key, 918 struct perf_sample *sample) 919 { 920 struct kvm_event *event; 921 u64 time_begin, time_diff; 922 int vcpu; 923 924 if (kvm->trace_vcpu == -1) 925 vcpu = -1; 926 else 927 vcpu = vcpu_record->vcpu_id; 928 929 event = vcpu_record->last_event; 930 time_begin = vcpu_record->start_time; 931 932 /* The begin event is not caught. */ 933 if (!time_begin) 934 return true; 935 936 /* 937 * In some case, the 'begin event' only records the start timestamp, 938 * the actual event is recognized in the 'end event' (e.g. mmio-event). 939 */ 940 941 /* Both begin and end events did not get the key. */ 942 if (!event && key->key == INVALID_KEY) 943 return true; 944 945 if (!event) 946 event = find_create_kvm_event(kvm, key, sample); 947 948 if (!event) 949 return false; 950 951 vcpu_record->last_event = NULL; 952 vcpu_record->start_time = 0; 953 954 /* seems to happen once in a while during live mode */ 955 if (sample->time < time_begin) { 956 pr_debug("End time before begin time; skipping event.\n"); 957 return true; 958 } 959 960 time_diff = sample->time - time_begin; 961 962 if (kvm->duration && time_diff > kvm->duration) { 963 char decode[KVM_EVENT_NAME_LEN]; 964 965 kvm->events_ops->decode_key(kvm, &event->key, decode); 966 if (!skip_event(decode)) { 967 pr_info("%" PRIu64 " VM %d, vcpu %d: %s event took %" PRIu64 "usec\n", 968 sample->time, sample->pid, vcpu_record->vcpu_id, 969 decode, time_diff / NSEC_PER_USEC); 970 } 971 } 972 973 return update_kvm_event(kvm, event, vcpu, time_diff); 974 } 975 976 static 977 struct vcpu_event_record *per_vcpu_record(struct thread *thread, 978 struct evsel *evsel, 979 struct perf_sample *sample) 980 { 981 /* Only kvm_entry records vcpu id. */ 982 if (!thread__priv(thread) && kvm_entry_event(evsel)) { 983 struct vcpu_event_record *vcpu_record; 984 985 vcpu_record = zalloc(sizeof(*vcpu_record)); 986 if (!vcpu_record) { 987 pr_err("%s: Not enough memory\n", __func__); 988 return NULL; 989 } 990 991 vcpu_record->vcpu_id = evsel__intval(evsel, sample, vcpu_id_str); 992 thread__set_priv(thread, vcpu_record); 993 } 994 995 return thread__priv(thread); 996 } 997 998 static bool handle_kvm_event(struct perf_kvm_stat *kvm, 999 struct thread *thread, 1000 struct evsel *evsel, 1001 struct perf_sample *sample) 1002 { 1003 struct vcpu_event_record *vcpu_record; 1004 struct event_key key = { .key = INVALID_KEY, 1005 .exit_reasons = kvm->exit_reasons }; 1006 1007 vcpu_record = per_vcpu_record(thread, evsel, sample); 1008 if (!vcpu_record) 1009 return true; 1010 1011 /* only process events for vcpus user cares about */ 1012 if ((kvm->trace_vcpu != -1) && 1013 (kvm->trace_vcpu != vcpu_record->vcpu_id)) 1014 return true; 1015 1016 if (kvm->events_ops->is_begin_event(evsel, sample, &key)) 1017 return handle_begin_event(kvm, vcpu_record, &key, sample); 1018 1019 if (is_child_event(kvm, evsel, sample, &key)) 1020 return handle_child_event(kvm, vcpu_record, &key, sample); 1021 1022 if (kvm->events_ops->is_end_event(evsel, sample, &key)) 1023 return handle_end_event(kvm, vcpu_record, &key, sample); 1024 1025 return true; 1026 } 1027 1028 static bool is_valid_key(struct perf_kvm_stat *kvm) 1029 { 1030 static const char *key_array[] = { 1031 "ev_name", "sample", "time", "max_t", "min_t", "mean_t", 1032 }; 1033 unsigned int i; 1034 1035 for (i = 0; i < ARRAY_SIZE(key_array); i++) 1036 if (!strcmp(key_array[i], kvm->sort_key)) 1037 return true; 1038 1039 pr_err("Unsupported sort key: %s\n", kvm->sort_key); 1040 return false; 1041 } 1042 1043 static bool event_is_valid(struct kvm_event *event, int vcpu) 1044 { 1045 return !!get_event_count(event, vcpu); 1046 } 1047 1048 static int filter_cb(struct hist_entry *he, void *arg __maybe_unused) 1049 { 1050 struct kvm_event *event; 1051 struct perf_kvm_stat *perf_kvm; 1052 1053 event = container_of(he, struct kvm_event, he); 1054 perf_kvm = event->perf_kvm; 1055 if (!event_is_valid(event, perf_kvm->trace_vcpu)) 1056 he->filtered = 1; 1057 else 1058 he->filtered = 0; 1059 return 0; 1060 } 1061 1062 static void sort_result(struct perf_kvm_stat *kvm) 1063 { 1064 struct ui_progress prog; 1065 const char *output_columns = "ev_name,sample,percent_sample," 1066 "time,percent_time,max_t,min_t,mean_t"; 1067 1068 kvm_hists__reinit(output_columns, kvm->sort_key); 1069 ui_progress__init(&prog, kvm_hists.hists.nr_entries, "Sorting..."); 1070 hists__collapse_resort(&kvm_hists.hists, NULL); 1071 hists__output_resort_cb(&kvm_hists.hists, NULL, filter_cb); 1072 ui_progress__finish(); 1073 } 1074 1075 static void print_vcpu_info(struct perf_kvm_stat *kvm) 1076 { 1077 int vcpu = kvm->trace_vcpu; 1078 1079 pr_info("Analyze events for "); 1080 1081 if (kvm->opts.target.system_wide) 1082 pr_info("all VMs, "); 1083 else if (kvm->opts.target.pid) 1084 pr_info("pid(s) %s, ", kvm->opts.target.pid); 1085 else 1086 pr_info("dazed and confused on what is monitored, "); 1087 1088 if (vcpu == -1) 1089 pr_info("all VCPUs:\n\n"); 1090 else 1091 pr_info("VCPU %d:\n\n", vcpu); 1092 } 1093 1094 static void show_timeofday(void) 1095 { 1096 char date[64]; 1097 struct timeval tv; 1098 struct tm ltime; 1099 1100 gettimeofday(&tv, NULL); 1101 if (localtime_r(&tv.tv_sec, <ime)) { 1102 strftime(date, sizeof(date), "%H:%M:%S", <ime); 1103 pr_info("%s.%06ld", date, tv.tv_usec); 1104 } else 1105 pr_info("00:00:00.000000"); 1106 1107 return; 1108 } 1109 1110 static void print_result(struct perf_kvm_stat *kvm) 1111 { 1112 char decode[KVM_EVENT_NAME_LEN]; 1113 struct kvm_event *event; 1114 int vcpu = kvm->trace_vcpu; 1115 struct rb_node *nd; 1116 1117 if (kvm->live) { 1118 puts(CONSOLE_CLEAR); 1119 show_timeofday(); 1120 } 1121 1122 pr_info("\n\n"); 1123 print_vcpu_info(kvm); 1124 pr_info("%*s ", KVM_EVENT_NAME_LEN, kvm->events_ops->name); 1125 pr_info("%10s ", "Samples"); 1126 pr_info("%9s ", "Samples%"); 1127 1128 pr_info("%9s ", "Time%"); 1129 pr_info("%11s ", "Min Time"); 1130 pr_info("%11s ", "Max Time"); 1131 pr_info("%16s ", "Avg time"); 1132 pr_info("\n\n"); 1133 1134 for (nd = rb_first_cached(&kvm_hists.hists.entries); nd; nd = rb_next(nd)) { 1135 struct hist_entry *he; 1136 u64 ecount, etime, max, min; 1137 1138 he = rb_entry(nd, struct hist_entry, rb_node); 1139 if (he->filtered) 1140 continue; 1141 1142 event = container_of(he, struct kvm_event, he); 1143 ecount = get_event_count(event, vcpu); 1144 etime = get_event_time(event, vcpu); 1145 max = get_event_max(event, vcpu); 1146 min = get_event_min(event, vcpu); 1147 1148 kvm->events_ops->decode_key(kvm, &event->key, decode); 1149 pr_info("%*s ", KVM_EVENT_NAME_LEN, decode); 1150 pr_info("%10llu ", (unsigned long long)ecount); 1151 pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100); 1152 pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100); 1153 pr_info("%9.2fus ", (double)min / NSEC_PER_USEC); 1154 pr_info("%9.2fus ", (double)max / NSEC_PER_USEC); 1155 pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount / NSEC_PER_USEC, 1156 kvm_event_rel_stddev(vcpu, event)); 1157 pr_info("\n"); 1158 } 1159 1160 pr_info("\nTotal Samples:%" PRIu64 ", Total events handled time:%.2fus.\n\n", 1161 kvm->total_count, kvm->total_time / (double)NSEC_PER_USEC); 1162 1163 if (kvm->lost_events) 1164 pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events); 1165 } 1166 1167 #if defined(HAVE_TIMERFD_SUPPORT) && defined(HAVE_LIBTRACEEVENT) 1168 static int process_lost_event(struct perf_tool *tool, 1169 union perf_event *event __maybe_unused, 1170 struct perf_sample *sample __maybe_unused, 1171 struct machine *machine __maybe_unused) 1172 { 1173 struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, tool); 1174 1175 kvm->lost_events++; 1176 return 0; 1177 } 1178 #endif 1179 1180 static bool skip_sample(struct perf_kvm_stat *kvm, 1181 struct perf_sample *sample) 1182 { 1183 if (kvm->pid_list && intlist__find(kvm->pid_list, sample->pid) == NULL) 1184 return true; 1185 1186 return false; 1187 } 1188 1189 static int process_sample_event(struct perf_tool *tool, 1190 union perf_event *event, 1191 struct perf_sample *sample, 1192 struct evsel *evsel, 1193 struct machine *machine) 1194 { 1195 int err = 0; 1196 struct thread *thread; 1197 struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, 1198 tool); 1199 1200 if (skip_sample(kvm, sample)) 1201 return 0; 1202 1203 if (machine__resolve(machine, &kvm->al, sample) < 0) { 1204 pr_warning("Fail to resolve address location, skip sample.\n"); 1205 return 0; 1206 } 1207 1208 thread = machine__findnew_thread(machine, sample->pid, sample->tid); 1209 if (thread == NULL) { 1210 pr_debug("problem processing %d event, skipping it.\n", 1211 event->header.type); 1212 return -1; 1213 } 1214 1215 if (!handle_kvm_event(kvm, thread, evsel, sample)) 1216 err = -1; 1217 1218 thread__put(thread); 1219 return err; 1220 } 1221 1222 static int cpu_isa_config(struct perf_kvm_stat *kvm) 1223 { 1224 char buf[128], *cpuid; 1225 int err; 1226 1227 if (kvm->live) { 1228 err = get_cpuid(buf, sizeof(buf)); 1229 if (err != 0) { 1230 pr_err("Failed to look up CPU type: %s\n", 1231 str_error_r(err, buf, sizeof(buf))); 1232 return -err; 1233 } 1234 cpuid = buf; 1235 } else 1236 cpuid = kvm->session->header.env.cpuid; 1237 1238 if (!cpuid) { 1239 pr_err("Failed to look up CPU type\n"); 1240 return -EINVAL; 1241 } 1242 1243 err = cpu_isa_init(kvm, cpuid); 1244 if (err == -ENOTSUP) 1245 pr_err("CPU %s is not supported.\n", cpuid); 1246 1247 return err; 1248 } 1249 1250 static bool verify_vcpu(int vcpu) 1251 { 1252 if (vcpu != -1 && vcpu < 0) { 1253 pr_err("Invalid vcpu:%d.\n", vcpu); 1254 return false; 1255 } 1256 1257 return true; 1258 } 1259 1260 #if defined(HAVE_TIMERFD_SUPPORT) && defined(HAVE_LIBTRACEEVENT) 1261 /* keeping the max events to a modest level to keep 1262 * the processing of samples per mmap smooth. 1263 */ 1264 #define PERF_KVM__MAX_EVENTS_PER_MMAP 25 1265 1266 static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx, 1267 u64 *mmap_time) 1268 { 1269 struct evlist *evlist = kvm->evlist; 1270 union perf_event *event; 1271 struct mmap *md; 1272 u64 timestamp; 1273 s64 n = 0; 1274 int err; 1275 1276 *mmap_time = ULLONG_MAX; 1277 md = &evlist->mmap[idx]; 1278 err = perf_mmap__read_init(&md->core); 1279 if (err < 0) 1280 return (err == -EAGAIN) ? 0 : -1; 1281 1282 while ((event = perf_mmap__read_event(&md->core)) != NULL) { 1283 err = evlist__parse_sample_timestamp(evlist, event, ×tamp); 1284 if (err) { 1285 perf_mmap__consume(&md->core); 1286 pr_err("Failed to parse sample\n"); 1287 return -1; 1288 } 1289 1290 err = perf_session__queue_event(kvm->session, event, timestamp, 0, NULL); 1291 /* 1292 * FIXME: Here we can't consume the event, as perf_session__queue_event will 1293 * point to it, and it'll get possibly overwritten by the kernel. 1294 */ 1295 perf_mmap__consume(&md->core); 1296 1297 if (err) { 1298 pr_err("Failed to enqueue sample: %d\n", err); 1299 return -1; 1300 } 1301 1302 /* save time stamp of our first sample for this mmap */ 1303 if (n == 0) 1304 *mmap_time = timestamp; 1305 1306 /* limit events per mmap handled all at once */ 1307 n++; 1308 if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) 1309 break; 1310 } 1311 1312 perf_mmap__read_done(&md->core); 1313 return n; 1314 } 1315 1316 static int perf_kvm__mmap_read(struct perf_kvm_stat *kvm) 1317 { 1318 int i, err, throttled = 0; 1319 s64 n, ntotal = 0; 1320 u64 flush_time = ULLONG_MAX, mmap_time; 1321 1322 for (i = 0; i < kvm->evlist->core.nr_mmaps; i++) { 1323 n = perf_kvm__mmap_read_idx(kvm, i, &mmap_time); 1324 if (n < 0) 1325 return -1; 1326 1327 /* flush time is going to be the minimum of all the individual 1328 * mmap times. Essentially, we flush all the samples queued up 1329 * from the last pass under our minimal start time -- that leaves 1330 * a very small race for samples to come in with a lower timestamp. 1331 * The ioctl to return the perf_clock timestamp should close the 1332 * race entirely. 1333 */ 1334 if (mmap_time < flush_time) 1335 flush_time = mmap_time; 1336 1337 ntotal += n; 1338 if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) 1339 throttled = 1; 1340 } 1341 1342 /* flush queue after each round in which we processed events */ 1343 if (ntotal) { 1344 struct ordered_events *oe = &kvm->session->ordered_events; 1345 1346 oe->next_flush = flush_time; 1347 err = ordered_events__flush(oe, OE_FLUSH__ROUND); 1348 if (err) { 1349 if (kvm->lost_events) 1350 pr_info("\nLost events: %" PRIu64 "\n\n", 1351 kvm->lost_events); 1352 return err; 1353 } 1354 } 1355 1356 return throttled; 1357 } 1358 1359 static volatile int done; 1360 1361 static void sig_handler(int sig __maybe_unused) 1362 { 1363 done = 1; 1364 } 1365 1366 static int perf_kvm__timerfd_create(struct perf_kvm_stat *kvm) 1367 { 1368 struct itimerspec new_value; 1369 int rc = -1; 1370 1371 kvm->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK); 1372 if (kvm->timerfd < 0) { 1373 pr_err("timerfd_create failed\n"); 1374 goto out; 1375 } 1376 1377 new_value.it_value.tv_sec = kvm->display_time; 1378 new_value.it_value.tv_nsec = 0; 1379 new_value.it_interval.tv_sec = kvm->display_time; 1380 new_value.it_interval.tv_nsec = 0; 1381 1382 if (timerfd_settime(kvm->timerfd, 0, &new_value, NULL) != 0) { 1383 pr_err("timerfd_settime failed: %d\n", errno); 1384 close(kvm->timerfd); 1385 goto out; 1386 } 1387 1388 rc = 0; 1389 out: 1390 return rc; 1391 } 1392 1393 static int perf_kvm__handle_timerfd(struct perf_kvm_stat *kvm) 1394 { 1395 uint64_t c; 1396 int rc; 1397 1398 rc = read(kvm->timerfd, &c, sizeof(uint64_t)); 1399 if (rc < 0) { 1400 if (errno == EAGAIN) 1401 return 0; 1402 1403 pr_err("Failed to read timer fd: %d\n", errno); 1404 return -1; 1405 } 1406 1407 if (rc != sizeof(uint64_t)) { 1408 pr_err("Error reading timer fd - invalid size returned\n"); 1409 return -1; 1410 } 1411 1412 if (c != 1) 1413 pr_debug("Missed timer beats: %" PRIu64 "\n", c-1); 1414 1415 /* update display */ 1416 sort_result(kvm); 1417 print_result(kvm); 1418 1419 /* Reset sort list to "ev_name" */ 1420 kvm_hists__reinit(NULL, "ev_name"); 1421 1422 /* reset counts */ 1423 clear_events_cache_stats(); 1424 kvm->total_count = 0; 1425 kvm->total_time = 0; 1426 kvm->lost_events = 0; 1427 1428 return 0; 1429 } 1430 1431 static int fd_set_nonblock(int fd) 1432 { 1433 long arg = 0; 1434 1435 arg = fcntl(fd, F_GETFL); 1436 if (arg < 0) { 1437 pr_err("Failed to get current flags for fd %d\n", fd); 1438 return -1; 1439 } 1440 1441 if (fcntl(fd, F_SETFL, arg | O_NONBLOCK) < 0) { 1442 pr_err("Failed to set non-block option on fd %d\n", fd); 1443 return -1; 1444 } 1445 1446 return 0; 1447 } 1448 1449 static int perf_kvm__handle_stdin(void) 1450 { 1451 int c; 1452 1453 c = getc(stdin); 1454 if (c == 'q') 1455 return 1; 1456 1457 return 0; 1458 } 1459 1460 static int kvm_events_live_report(struct perf_kvm_stat *kvm) 1461 { 1462 int nr_stdin, ret, err = -EINVAL; 1463 struct termios save; 1464 1465 /* live flag must be set first */ 1466 kvm->live = true; 1467 1468 ret = cpu_isa_config(kvm); 1469 if (ret < 0) 1470 return ret; 1471 1472 if (!verify_vcpu(kvm->trace_vcpu) || 1473 !is_valid_key(kvm) || 1474 !register_kvm_events_ops(kvm)) { 1475 goto out; 1476 } 1477 1478 set_term_quiet_input(&save); 1479 1480 kvm_hists__init(); 1481 1482 signal(SIGINT, sig_handler); 1483 signal(SIGTERM, sig_handler); 1484 1485 /* add timer fd */ 1486 if (perf_kvm__timerfd_create(kvm) < 0) { 1487 err = -1; 1488 goto out; 1489 } 1490 1491 if (evlist__add_pollfd(kvm->evlist, kvm->timerfd) < 0) 1492 goto out; 1493 1494 nr_stdin = evlist__add_pollfd(kvm->evlist, fileno(stdin)); 1495 if (nr_stdin < 0) 1496 goto out; 1497 1498 if (fd_set_nonblock(fileno(stdin)) != 0) 1499 goto out; 1500 1501 /* everything is good - enable the events and process */ 1502 evlist__enable(kvm->evlist); 1503 1504 while (!done) { 1505 struct fdarray *fda = &kvm->evlist->core.pollfd; 1506 int rc; 1507 1508 rc = perf_kvm__mmap_read(kvm); 1509 if (rc < 0) 1510 break; 1511 1512 err = perf_kvm__handle_timerfd(kvm); 1513 if (err) 1514 goto out; 1515 1516 if (fda->entries[nr_stdin].revents & POLLIN) 1517 done = perf_kvm__handle_stdin(); 1518 1519 if (!rc && !done) 1520 err = evlist__poll(kvm->evlist, 100); 1521 } 1522 1523 evlist__disable(kvm->evlist); 1524 1525 if (err == 0) { 1526 sort_result(kvm); 1527 print_result(kvm); 1528 } 1529 1530 out: 1531 hists__delete_entries(&kvm_hists.hists); 1532 1533 if (kvm->timerfd >= 0) 1534 close(kvm->timerfd); 1535 1536 tcsetattr(0, TCSAFLUSH, &save); 1537 return err; 1538 } 1539 1540 static int kvm_live_open_events(struct perf_kvm_stat *kvm) 1541 { 1542 int err, rc = -1; 1543 struct evsel *pos; 1544 struct evlist *evlist = kvm->evlist; 1545 char sbuf[STRERR_BUFSIZE]; 1546 1547 evlist__config(evlist, &kvm->opts, NULL); 1548 1549 /* 1550 * Note: exclude_{guest,host} do not apply here. 1551 * This command processes KVM tracepoints from host only 1552 */ 1553 evlist__for_each_entry(evlist, pos) { 1554 struct perf_event_attr *attr = &pos->core.attr; 1555 1556 /* make sure these *are* set */ 1557 evsel__set_sample_bit(pos, TID); 1558 evsel__set_sample_bit(pos, TIME); 1559 evsel__set_sample_bit(pos, CPU); 1560 evsel__set_sample_bit(pos, RAW); 1561 /* make sure these are *not*; want as small a sample as possible */ 1562 evsel__reset_sample_bit(pos, PERIOD); 1563 evsel__reset_sample_bit(pos, IP); 1564 evsel__reset_sample_bit(pos, CALLCHAIN); 1565 evsel__reset_sample_bit(pos, ADDR); 1566 evsel__reset_sample_bit(pos, READ); 1567 attr->mmap = 0; 1568 attr->comm = 0; 1569 attr->task = 0; 1570 1571 attr->sample_period = 1; 1572 1573 attr->watermark = 0; 1574 attr->wakeup_events = 1000; 1575 1576 /* will enable all once we are ready */ 1577 attr->disabled = 1; 1578 } 1579 1580 err = evlist__open(evlist); 1581 if (err < 0) { 1582 printf("Couldn't create the events: %s\n", 1583 str_error_r(errno, sbuf, sizeof(sbuf))); 1584 goto out; 1585 } 1586 1587 if (evlist__mmap(evlist, kvm->opts.mmap_pages) < 0) { 1588 ui__error("Failed to mmap the events: %s\n", 1589 str_error_r(errno, sbuf, sizeof(sbuf))); 1590 evlist__close(evlist); 1591 goto out; 1592 } 1593 1594 rc = 0; 1595 1596 out: 1597 return rc; 1598 } 1599 #endif 1600 1601 static int read_events(struct perf_kvm_stat *kvm) 1602 { 1603 int ret; 1604 1605 struct perf_tool eops = { 1606 .sample = process_sample_event, 1607 .comm = perf_event__process_comm, 1608 .namespaces = perf_event__process_namespaces, 1609 .ordered_events = true, 1610 }; 1611 struct perf_data file = { 1612 .path = kvm->file_name, 1613 .mode = PERF_DATA_MODE_READ, 1614 .force = kvm->force, 1615 }; 1616 1617 kvm->tool = eops; 1618 kvm->session = perf_session__new(&file, &kvm->tool); 1619 if (IS_ERR(kvm->session)) { 1620 pr_err("Initializing perf session failed\n"); 1621 return PTR_ERR(kvm->session); 1622 } 1623 1624 symbol__init(&kvm->session->header.env); 1625 1626 if (!perf_session__has_traces(kvm->session, "kvm record")) { 1627 ret = -EINVAL; 1628 goto out_delete; 1629 } 1630 1631 /* 1632 * Do not use 'isa' recorded in kvm_exit tracepoint since it is not 1633 * traced in the old kernel. 1634 */ 1635 ret = cpu_isa_config(kvm); 1636 if (ret < 0) 1637 goto out_delete; 1638 1639 ret = perf_session__process_events(kvm->session); 1640 1641 out_delete: 1642 perf_session__delete(kvm->session); 1643 return ret; 1644 } 1645 1646 static int parse_target_str(struct perf_kvm_stat *kvm) 1647 { 1648 if (kvm->opts.target.pid) { 1649 kvm->pid_list = intlist__new(kvm->opts.target.pid); 1650 if (kvm->pid_list == NULL) { 1651 pr_err("Error parsing process id string\n"); 1652 return -EINVAL; 1653 } 1654 } 1655 1656 return 0; 1657 } 1658 1659 static int kvm_events_report_vcpu(struct perf_kvm_stat *kvm) 1660 { 1661 int ret = -EINVAL; 1662 int vcpu = kvm->trace_vcpu; 1663 1664 if (parse_target_str(kvm) != 0) 1665 goto exit; 1666 1667 if (!verify_vcpu(vcpu)) 1668 goto exit; 1669 1670 if (!is_valid_key(kvm)) 1671 goto exit; 1672 1673 if (!register_kvm_events_ops(kvm)) 1674 goto exit; 1675 1676 if (kvm->use_stdio) { 1677 use_browser = 0; 1678 setup_pager(); 1679 } else { 1680 use_browser = 1; 1681 } 1682 1683 setup_browser(false); 1684 1685 kvm_hists__init(); 1686 1687 ret = read_events(kvm); 1688 if (ret) 1689 goto exit; 1690 1691 sort_result(kvm); 1692 kvm_display(kvm); 1693 1694 exit: 1695 hists__delete_entries(&kvm_hists.hists); 1696 return ret; 1697 } 1698 1699 #define STRDUP_FAIL_EXIT(s) \ 1700 ({ char *_p; \ 1701 _p = strdup(s); \ 1702 if (!_p) \ 1703 return -ENOMEM; \ 1704 _p; \ 1705 }) 1706 1707 int __weak setup_kvm_events_tp(struct perf_kvm_stat *kvm __maybe_unused) 1708 { 1709 return 0; 1710 } 1711 1712 static int 1713 kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv) 1714 { 1715 unsigned int rec_argc, i, j, events_tp_size; 1716 const char **rec_argv; 1717 const char * const record_args[] = { 1718 "record", 1719 "-R", 1720 "-m", "1024", 1721 "-c", "1", 1722 }; 1723 const char * const kvm_stat_record_usage[] = { 1724 "perf kvm stat record [<options>]", 1725 NULL 1726 }; 1727 const char * const *events_tp; 1728 int ret; 1729 1730 events_tp_size = 0; 1731 ret = setup_kvm_events_tp(kvm); 1732 if (ret < 0) { 1733 pr_err("Unable to setup the kvm tracepoints\n"); 1734 return ret; 1735 } 1736 1737 for (events_tp = kvm_events_tp; *events_tp; events_tp++) 1738 events_tp_size++; 1739 1740 rec_argc = ARRAY_SIZE(record_args) + argc + 2 + 1741 2 * events_tp_size; 1742 rec_argv = calloc(rec_argc + 1, sizeof(char *)); 1743 1744 if (rec_argv == NULL) 1745 return -ENOMEM; 1746 1747 for (i = 0; i < ARRAY_SIZE(record_args); i++) 1748 rec_argv[i] = STRDUP_FAIL_EXIT(record_args[i]); 1749 1750 for (j = 0; j < events_tp_size; j++) { 1751 rec_argv[i++] = "-e"; 1752 rec_argv[i++] = STRDUP_FAIL_EXIT(kvm_events_tp[j]); 1753 } 1754 1755 rec_argv[i++] = STRDUP_FAIL_EXIT("-o"); 1756 rec_argv[i++] = STRDUP_FAIL_EXIT(kvm->file_name); 1757 1758 for (j = 1; j < (unsigned int)argc; j++, i++) 1759 rec_argv[i] = argv[j]; 1760 1761 set_option_flag(record_options, 'e', "event", PARSE_OPT_HIDDEN); 1762 set_option_flag(record_options, 0, "filter", PARSE_OPT_HIDDEN); 1763 set_option_flag(record_options, 'R', "raw-samples", PARSE_OPT_HIDDEN); 1764 1765 set_option_flag(record_options, 'F', "freq", PARSE_OPT_DISABLED); 1766 set_option_flag(record_options, 0, "group", PARSE_OPT_DISABLED); 1767 set_option_flag(record_options, 'g', NULL, PARSE_OPT_DISABLED); 1768 set_option_flag(record_options, 0, "call-graph", PARSE_OPT_DISABLED); 1769 set_option_flag(record_options, 'd', "data", PARSE_OPT_DISABLED); 1770 set_option_flag(record_options, 'T', "timestamp", PARSE_OPT_DISABLED); 1771 set_option_flag(record_options, 'P', "period", PARSE_OPT_DISABLED); 1772 set_option_flag(record_options, 'n', "no-samples", PARSE_OPT_DISABLED); 1773 set_option_flag(record_options, 'N', "no-buildid-cache", PARSE_OPT_DISABLED); 1774 set_option_flag(record_options, 'B', "no-buildid", PARSE_OPT_DISABLED); 1775 set_option_flag(record_options, 'G', "cgroup", PARSE_OPT_DISABLED); 1776 set_option_flag(record_options, 'b', "branch-any", PARSE_OPT_DISABLED); 1777 set_option_flag(record_options, 'j', "branch-filter", PARSE_OPT_DISABLED); 1778 set_option_flag(record_options, 'W', "weight", PARSE_OPT_DISABLED); 1779 set_option_flag(record_options, 0, "transaction", PARSE_OPT_DISABLED); 1780 1781 record_usage = kvm_stat_record_usage; 1782 return cmd_record(i, rec_argv); 1783 } 1784 1785 static int 1786 kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv) 1787 { 1788 const struct option kvm_events_report_options[] = { 1789 OPT_STRING(0, "event", &kvm->report_event, "report event", 1790 "event for reporting: vmexit, " 1791 "mmio (x86 only), ioport (x86 only)"), 1792 OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, 1793 "vcpu id to report"), 1794 OPT_STRING('k', "key", &kvm->sort_key, "sort-key", 1795 "key for sorting: sample(sort by samples number)" 1796 " time (sort by avg time)"), 1797 OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", 1798 "analyze events only for given process id(s)"), 1799 OPT_BOOLEAN('f', "force", &kvm->force, "don't complain, do it"), 1800 OPT_BOOLEAN(0, "stdio", &kvm->use_stdio, "use the stdio interface"), 1801 OPT_END() 1802 }; 1803 1804 const char * const kvm_events_report_usage[] = { 1805 "perf kvm stat report [<options>]", 1806 NULL 1807 }; 1808 1809 if (argc) { 1810 argc = parse_options(argc, argv, 1811 kvm_events_report_options, 1812 kvm_events_report_usage, 0); 1813 if (argc) 1814 usage_with_options(kvm_events_report_usage, 1815 kvm_events_report_options); 1816 } 1817 1818 #ifndef HAVE_SLANG_SUPPORT 1819 kvm->use_stdio = true; 1820 #endif 1821 1822 if (!kvm->opts.target.pid) 1823 kvm->opts.target.system_wide = true; 1824 1825 return kvm_events_report_vcpu(kvm); 1826 } 1827 1828 #if defined(HAVE_TIMERFD_SUPPORT) && defined(HAVE_LIBTRACEEVENT) 1829 static struct evlist *kvm_live_event_list(void) 1830 { 1831 struct evlist *evlist; 1832 char *tp, *name, *sys; 1833 int err = -1; 1834 const char * const *events_tp; 1835 1836 evlist = evlist__new(); 1837 if (evlist == NULL) 1838 return NULL; 1839 1840 for (events_tp = kvm_events_tp; *events_tp; events_tp++) { 1841 1842 tp = strdup(*events_tp); 1843 if (tp == NULL) 1844 goto out; 1845 1846 /* split tracepoint into subsystem and name */ 1847 sys = tp; 1848 name = strchr(tp, ':'); 1849 if (name == NULL) { 1850 pr_err("Error parsing %s tracepoint: subsystem delimiter not found\n", 1851 *events_tp); 1852 free(tp); 1853 goto out; 1854 } 1855 *name = '\0'; 1856 name++; 1857 1858 if (evlist__add_newtp(evlist, sys, name, NULL)) { 1859 pr_err("Failed to add %s tracepoint to the list\n", *events_tp); 1860 free(tp); 1861 goto out; 1862 } 1863 1864 free(tp); 1865 } 1866 1867 err = 0; 1868 1869 out: 1870 if (err) { 1871 evlist__delete(evlist); 1872 evlist = NULL; 1873 } 1874 1875 return evlist; 1876 } 1877 1878 static int kvm_events_live(struct perf_kvm_stat *kvm, 1879 int argc, const char **argv) 1880 { 1881 char errbuf[BUFSIZ]; 1882 int err; 1883 1884 const struct option live_options[] = { 1885 OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", 1886 "record events on existing process id"), 1887 OPT_CALLBACK('m', "mmap-pages", &kvm->opts.mmap_pages, "pages", 1888 "number of mmap data pages", evlist__parse_mmap_pages), 1889 OPT_INCR('v', "verbose", &verbose, 1890 "be more verbose (show counter open errors, etc)"), 1891 OPT_BOOLEAN('a', "all-cpus", &kvm->opts.target.system_wide, 1892 "system-wide collection from all CPUs"), 1893 OPT_UINTEGER('d', "display", &kvm->display_time, 1894 "time in seconds between display updates"), 1895 OPT_STRING(0, "event", &kvm->report_event, "report event", 1896 "event for reporting: " 1897 "vmexit, mmio (x86 only), ioport (x86 only)"), 1898 OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, 1899 "vcpu id to report"), 1900 OPT_STRING('k', "key", &kvm->sort_key, "sort-key", 1901 "key for sorting: sample(sort by samples number)" 1902 " time (sort by avg time)"), 1903 OPT_U64(0, "duration", &kvm->duration, 1904 "show events other than" 1905 " HLT (x86 only) or Wait state (s390 only)" 1906 " that take longer than duration usecs"), 1907 OPT_UINTEGER(0, "proc-map-timeout", &proc_map_timeout, 1908 "per thread proc mmap processing timeout in ms"), 1909 OPT_END() 1910 }; 1911 const char * const live_usage[] = { 1912 "perf kvm stat live [<options>]", 1913 NULL 1914 }; 1915 struct perf_data data = { 1916 .mode = PERF_DATA_MODE_WRITE, 1917 }; 1918 1919 1920 /* event handling */ 1921 kvm->tool.sample = process_sample_event; 1922 kvm->tool.comm = perf_event__process_comm; 1923 kvm->tool.exit = perf_event__process_exit; 1924 kvm->tool.fork = perf_event__process_fork; 1925 kvm->tool.lost = process_lost_event; 1926 kvm->tool.namespaces = perf_event__process_namespaces; 1927 kvm->tool.ordered_events = true; 1928 perf_tool__fill_defaults(&kvm->tool); 1929 1930 /* set defaults */ 1931 kvm->display_time = 1; 1932 kvm->opts.user_interval = 1; 1933 kvm->opts.mmap_pages = 512; 1934 kvm->opts.target.uses_mmap = false; 1935 kvm->opts.target.uid_str = NULL; 1936 kvm->opts.target.uid = UINT_MAX; 1937 1938 symbol__init(NULL); 1939 disable_buildid_cache(); 1940 1941 use_browser = 0; 1942 1943 if (argc) { 1944 argc = parse_options(argc, argv, live_options, 1945 live_usage, 0); 1946 if (argc) 1947 usage_with_options(live_usage, live_options); 1948 } 1949 1950 kvm->duration *= NSEC_PER_USEC; /* convert usec to nsec */ 1951 1952 /* 1953 * target related setups 1954 */ 1955 err = target__validate(&kvm->opts.target); 1956 if (err) { 1957 target__strerror(&kvm->opts.target, err, errbuf, BUFSIZ); 1958 ui__warning("%s", errbuf); 1959 } 1960 1961 if (target__none(&kvm->opts.target)) 1962 kvm->opts.target.system_wide = true; 1963 1964 1965 /* 1966 * generate the event list 1967 */ 1968 err = setup_kvm_events_tp(kvm); 1969 if (err < 0) { 1970 pr_err("Unable to setup the kvm tracepoints\n"); 1971 return err; 1972 } 1973 1974 kvm->evlist = kvm_live_event_list(); 1975 if (kvm->evlist == NULL) { 1976 err = -1; 1977 goto out; 1978 } 1979 1980 if (evlist__create_maps(kvm->evlist, &kvm->opts.target) < 0) 1981 usage_with_options(live_usage, live_options); 1982 1983 /* 1984 * perf session 1985 */ 1986 kvm->session = perf_session__new(&data, &kvm->tool); 1987 if (IS_ERR(kvm->session)) { 1988 err = PTR_ERR(kvm->session); 1989 goto out; 1990 } 1991 kvm->session->evlist = kvm->evlist; 1992 perf_session__set_id_hdr_size(kvm->session); 1993 ordered_events__set_copy_on_queue(&kvm->session->ordered_events, true); 1994 machine__synthesize_threads(&kvm->session->machines.host, &kvm->opts.target, 1995 kvm->evlist->core.threads, true, false, 1); 1996 err = kvm_live_open_events(kvm); 1997 if (err) 1998 goto out; 1999 2000 err = kvm_events_live_report(kvm); 2001 2002 out: 2003 perf_session__delete(kvm->session); 2004 kvm->session = NULL; 2005 evlist__delete(kvm->evlist); 2006 2007 return err; 2008 } 2009 #endif 2010 2011 static void print_kvm_stat_usage(void) 2012 { 2013 printf("Usage: perf kvm stat <command>\n\n"); 2014 2015 printf("# Available commands:\n"); 2016 printf("\trecord: record kvm events\n"); 2017 printf("\treport: report statistical data of kvm events\n"); 2018 printf("\tlive: live reporting of statistical data of kvm events\n"); 2019 2020 printf("\nOtherwise, it is the alias of 'perf stat':\n"); 2021 } 2022 2023 static int kvm_cmd_stat(const char *file_name, int argc, const char **argv) 2024 { 2025 struct perf_kvm_stat kvm = { 2026 .file_name = file_name, 2027 2028 .trace_vcpu = -1, 2029 .report_event = "vmexit", 2030 .sort_key = "sample", 2031 2032 }; 2033 2034 if (argc == 1) { 2035 print_kvm_stat_usage(); 2036 goto perf_stat; 2037 } 2038 2039 if (strlen(argv[1]) > 2 && strstarts("record", argv[1])) 2040 return kvm_events_record(&kvm, argc - 1, argv + 1); 2041 2042 if (strlen(argv[1]) > 2 && strstarts("report", argv[1])) 2043 return kvm_events_report(&kvm, argc - 1 , argv + 1); 2044 2045 #if defined(HAVE_TIMERFD_SUPPORT) && defined(HAVE_LIBTRACEEVENT) 2046 if (!strncmp(argv[1], "live", 4)) 2047 return kvm_events_live(&kvm, argc - 1 , argv + 1); 2048 #endif 2049 2050 perf_stat: 2051 return cmd_stat(argc, argv); 2052 } 2053 #endif /* HAVE_KVM_STAT_SUPPORT */ 2054 2055 int __weak kvm_add_default_arch_event(int *argc __maybe_unused, 2056 const char **argv __maybe_unused) 2057 { 2058 return 0; 2059 } 2060 2061 static int __cmd_record(const char *file_name, int argc, const char **argv) 2062 { 2063 int rec_argc, i = 0, j, ret; 2064 const char **rec_argv; 2065 2066 ret = kvm_add_default_arch_event(&argc, argv); 2067 if (ret) 2068 return -EINVAL; 2069 2070 rec_argc = argc + 2; 2071 rec_argv = calloc(rec_argc + 1, sizeof(char *)); 2072 rec_argv[i++] = strdup("record"); 2073 rec_argv[i++] = strdup("-o"); 2074 rec_argv[i++] = strdup(file_name); 2075 for (j = 1; j < argc; j++, i++) 2076 rec_argv[i] = argv[j]; 2077 2078 BUG_ON(i != rec_argc); 2079 2080 return cmd_record(i, rec_argv); 2081 } 2082 2083 static int __cmd_report(const char *file_name, int argc, const char **argv) 2084 { 2085 int rec_argc, i = 0, j; 2086 const char **rec_argv; 2087 2088 rec_argc = argc + 2; 2089 rec_argv = calloc(rec_argc + 1, sizeof(char *)); 2090 rec_argv[i++] = strdup("report"); 2091 rec_argv[i++] = strdup("-i"); 2092 rec_argv[i++] = strdup(file_name); 2093 for (j = 1; j < argc; j++, i++) 2094 rec_argv[i] = argv[j]; 2095 2096 BUG_ON(i != rec_argc); 2097 2098 return cmd_report(i, rec_argv); 2099 } 2100 2101 static int 2102 __cmd_buildid_list(const char *file_name, int argc, const char **argv) 2103 { 2104 int rec_argc, i = 0, j; 2105 const char **rec_argv; 2106 2107 rec_argc = argc + 2; 2108 rec_argv = calloc(rec_argc + 1, sizeof(char *)); 2109 rec_argv[i++] = strdup("buildid-list"); 2110 rec_argv[i++] = strdup("-i"); 2111 rec_argv[i++] = strdup(file_name); 2112 for (j = 1; j < argc; j++, i++) 2113 rec_argv[i] = argv[j]; 2114 2115 BUG_ON(i != rec_argc); 2116 2117 return cmd_buildid_list(i, rec_argv); 2118 } 2119 2120 int cmd_kvm(int argc, const char **argv) 2121 { 2122 const char *file_name = NULL; 2123 const struct option kvm_options[] = { 2124 OPT_STRING('i', "input", &file_name, "file", 2125 "Input file name"), 2126 OPT_STRING('o', "output", &file_name, "file", 2127 "Output file name"), 2128 OPT_BOOLEAN(0, "guest", &perf_guest, 2129 "Collect guest os data"), 2130 OPT_BOOLEAN(0, "host", &perf_host, 2131 "Collect host os data"), 2132 OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory", 2133 "guest mount directory under which every guest os" 2134 " instance has a subdir"), 2135 OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name, 2136 "file", "file saving guest os vmlinux"), 2137 OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms, 2138 "file", "file saving guest os /proc/kallsyms"), 2139 OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules, 2140 "file", "file saving guest os /proc/modules"), 2141 OPT_BOOLEAN(0, "guest-code", &symbol_conf.guest_code, 2142 "Guest code can be found in hypervisor process"), 2143 OPT_INCR('v', "verbose", &verbose, 2144 "be more verbose (show counter open errors, etc)"), 2145 OPT_END() 2146 }; 2147 2148 const char *const kvm_subcommands[] = { "top", "record", "report", "diff", 2149 "buildid-list", "stat", NULL }; 2150 const char *kvm_usage[] = { NULL, NULL }; 2151 2152 perf_host = 0; 2153 perf_guest = 1; 2154 2155 argc = parse_options_subcommand(argc, argv, kvm_options, kvm_subcommands, kvm_usage, 2156 PARSE_OPT_STOP_AT_NON_OPTION); 2157 if (!argc) 2158 usage_with_options(kvm_usage, kvm_options); 2159 2160 if (!perf_host) 2161 perf_guest = 1; 2162 2163 if (!file_name) { 2164 file_name = get_filename_for_perf_kvm(); 2165 2166 if (!file_name) { 2167 pr_err("Failed to allocate memory for filename\n"); 2168 return -ENOMEM; 2169 } 2170 } 2171 2172 if (strlen(argv[0]) > 2 && strstarts("record", argv[0])) 2173 return __cmd_record(file_name, argc, argv); 2174 else if (strlen(argv[0]) > 2 && strstarts("report", argv[0])) 2175 return __cmd_report(file_name, argc, argv); 2176 else if (strlen(argv[0]) > 2 && strstarts("diff", argv[0])) 2177 return cmd_diff(argc, argv); 2178 else if (!strcmp(argv[0], "top")) 2179 return cmd_top(argc, argv); 2180 else if (strlen(argv[0]) > 2 && strstarts("buildid-list", argv[0])) 2181 return __cmd_buildid_list(file_name, argc, argv); 2182 #if defined(HAVE_KVM_STAT_SUPPORT) && defined(HAVE_LIBTRACEEVENT) 2183 else if (strlen(argv[0]) > 2 && strstarts("stat", argv[0])) 2184 return kvm_cmd_stat(file_name, argc, argv); 2185 #endif 2186 else 2187 usage_with_options(kvm_usage, kvm_options); 2188 2189 return 0; 2190 } 2191