tools/perf/builtin-timechart.c

   1 /*
   2  * builtin-timechart.c - make an svg timechart of system activity
   3  *
   4  * (C) Copyright 2009 Intel Corporation
   5  *
   6  * Authors:
   7  *     Arjan van de Ven <arjan@linux.intel.com>
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; version 2
  12  * of the License.
  13  */
  14
  15 #include <traceevent/event-parse.h>
  16
  17 #include "builtin.h"
  18
  19 #include "util/util.h"
  20
  21 #include "util/color.h"
  22 #include <linux/list.h>
  23 #include "util/cache.h"
  24 #include "util/evlist.h"
  25 #include "util/evsel.h"
  26 #include <linux/rbtree.h>
  27 #include "util/symbol.h"
  28 #include "util/callchain.h"
  29 #include "util/strlist.h"
  30
  31 #include "perf.h"
  32 #include "util/header.h"
  33 #include "util/parse-options.h"
  34 #include "util/parse-events.h"
  35 #include "util/event.h"
  36 #include "util/session.h"
  37 #include "util/svghelper.h"
  38 #include "util/tool.h"
  39 #include "util/data.h"
  40
  41 #define SUPPORT_OLD_POWER_EVENTS 1
  42 #define PWR_EVENT_EXIT -1
  43
  44 static int proc_num = 15;
  45
  46 static unsigned int     numcpus;
  47 static u64              min_freq;       /* Lowest CPU frequency seen */
  48 static u64              max_freq;       /* Highest CPU frequency seen */
  49 static u64              turbo_frequency;
  50
  51 static u64              first_time, last_time;
  52
  53 static bool             power_only;
  54 static bool             tasks_only;
  55
  56
  57 struct per_pid;
  58 struct per_pidcomm;
  59
  60 struct cpu_sample;
  61 struct power_event;
  62 struct wake_event;
  63
  64 struct sample_wrapper;
  65
  66 /*
  67  * Datastructure layout:
  68  * We keep an list of "pid"s, matching the kernels notion of a task struct.
  69  * Each "pid" entry, has a list of "comm"s.
  70  *      this is because we want to track different programs different, while
  71  *      exec will reuse the original pid (by design).
  72  * Each comm has a list of samples that will be used to draw
  73  * final graph.
  74  */
  75
  76 struct per_pid {
  77         struct per_pid *next;
  78
  79         int             pid;
  80         int             ppid;
  81
  82         u64             start_time;
  83         u64             end_time;
  84         u64             total_time;
  85         int             display;
  86
  87         struct per_pidcomm *all;
  88         struct per_pidcomm *current;
  89 };
  90
  91
  92 struct per_pidcomm {
  93         struct per_pidcomm *next;
  94
  95         u64             start_time;
  96         u64             end_time;
  97         u64             total_time;
  98
  99         int             Y;
 100         int             display;
 101
 102         long            state;
 103         u64             state_since;
 104
 105         char            *comm;
 106
 107         struct cpu_sample *samples;
 108 };
 109
 110 struct sample_wrapper {
 111         struct sample_wrapper *next;
 112
 113         u64             timestamp;
 114         unsigned char   data[0];
 115 };
 116
 117 #define TYPE_NONE       0
 118 #define TYPE_RUNNING    1
 119 #define TYPE_WAITING    2
 120 #define TYPE_BLOCKED    3
 121
 122 struct cpu_sample {
 123         struct cpu_sample *next;
 124
 125         u64 start_time;
 126         u64 end_time;
 127         int type;
 128         int cpu;
 129 };
 130
 131 static struct per_pid *all_data;
 132
 133 #define CSTATE 1
 134 #define PSTATE 2
 135
 136 struct power_event {
 137         struct power_event *next;
 138         int type;
 139         int state;
 140         u64 start_time;
 141         u64 end_time;
 142         int cpu;
 143 };
 144
 145 struct wake_event {
 146         struct wake_event *next;
 147         int waker;
 148         int wakee;
 149         u64 time;
 150 };
 151
 152 static struct power_event    *power_events;
 153 static struct wake_event     *wake_events;
 154
 155 struct process_filter;
 156 struct process_filter {
 157         char                    *name;
 158         int                     pid;
 159         struct process_filter   *next;
 160 };
 161
 162 static struct process_filter *process_filter;
 163
 164
 165 static struct per_pid *find_create_pid(int pid)
 166 {
 167         struct per_pid *cursor = all_data;
 168
 169         while (cursor) {
 170                 if (cursor->pid == pid)
 171                         return cursor;
 172                 cursor = cursor->next;
 173         }
 174         cursor = zalloc(sizeof(*cursor));
 175         assert(cursor != NULL);
 176         cursor->pid = pid;
 177         cursor->next = all_data;
 178         all_data = cursor;
 179         return cursor;
 180 }
 181
 182 static void pid_set_comm(int pid, char *comm)
 183 {
 184         struct per_pid *p;
 185         struct per_pidcomm *c;
 186         p = find_create_pid(pid);
 187         c = p->all;
 188         while (c) {
 189                 if (c->comm && strcmp(c->comm, comm) == 0) {
 190                         p->current = c;
 191                         return;
 192                 }
 193                 if (!c->comm) {
 194                         c->comm = strdup(comm);
 195                         p->current = c;
 196                         return;
 197                 }
 198                 c = c->next;
 199         }
 200         c = zalloc(sizeof(*c));
 201         assert(c != NULL);
 202         c->comm = strdup(comm);
 203         p->current = c;
 204         c->next = p->all;
 205         p->all = c;
 206 }
 207
 208 static void pid_fork(int pid, int ppid, u64 timestamp)
 209 {
 210         struct per_pid *p, *pp;
 211         p = find_create_pid(pid);
 212         pp = find_create_pid(ppid);
 213         p->ppid = ppid;
 214         if (pp->current && pp->current->comm && !p->current)
 215                 pid_set_comm(pid, pp->current->comm);
 216
 217         p->start_time = timestamp;
 218         if (p->current) {
 219                 p->current->start_time = timestamp;
 220                 p->current->state_since = timestamp;
 221         }
 222 }
 223
 224 static void pid_exit(int pid, u64 timestamp)
 225 {
 226         struct per_pid *p;
 227         p = find_create_pid(pid);
 228         p->end_time = timestamp;
 229         if (p->current)
 230                 p->current->end_time = timestamp;
 231 }
 232
 233 static void
 234 pid_put_sample(int pid, int type, unsigned int cpu, u64 start, u64 end)
 235 {
 236         struct per_pid *p;
 237         struct per_pidcomm *c;
 238         struct cpu_sample *sample;
 239
 240         p = find_create_pid(pid);
 241         c = p->current;
 242         if (!c) {
 243                 c = zalloc(sizeof(*c));
 244                 assert(c != NULL);
 245                 p->current = c;
 246                 c->next = p->all;
 247                 p->all = c;
 248         }
 249
 250         sample = zalloc(sizeof(*sample));
 251         assert(sample != NULL);
 252         sample->start_time = start;
 253         sample->end_time = end;
 254         sample->type = type;
 255         sample->next = c->samples;
 256         sample->cpu = cpu;
 257         c->samples = sample;
 258
 259         if (sample->type == TYPE_RUNNING && end > start && start > 0) {
 260                 c->total_time += (end-start);
 261                 p->total_time += (end-start);
 262         }
 263
 264         if (c->start_time == 0 || c->start_time > start)
 265                 c->start_time = start;
 266         if (p->start_time == 0 || p->start_time > start)
 267                 p->start_time = start;
 268 }
 269
 270 #define MAX_CPUS 4096
 271
 272 static u64 cpus_cstate_start_times[MAX_CPUS];
 273 static int cpus_cstate_state[MAX_CPUS];
 274 static u64 cpus_pstate_start_times[MAX_CPUS];
 275 static u64 cpus_pstate_state[MAX_CPUS];
 276
 277 static int process_comm_event(struct perf_tool *tool __maybe_unused,
 278                               union perf_event *event,
 279                               struct perf_sample *sample __maybe_unused,
 280                               struct machine *machine __maybe_unused)
 281 {
 282         pid_set_comm(event->comm.tid, event->comm.comm);
 283         return 0;
 284 }
 285
 286 static int process_fork_event(struct perf_tool *tool __maybe_unused,
 287                               union perf_event *event,
 288                               struct perf_sample *sample __maybe_unused,
 289                               struct machine *machine __maybe_unused)
 290 {
 291         pid_fork(event->fork.pid, event->fork.ppid, event->fork.time);
 292         return 0;
 293 }
 294
 295 static int process_exit_event(struct perf_tool *tool __maybe_unused,
 296                               union perf_event *event,
 297                               struct perf_sample *sample __maybe_unused,
 298                               struct machine *machine __maybe_unused)
 299 {
 300         pid_exit(event->fork.pid, event->fork.time);
 301         return 0;
 302 }
 303
 304 struct trace_entry {
 305         unsigned short          type;
 306         unsigned char           flags;
 307         unsigned char           preempt_count;
 308         int                     pid;
 309         int                     lock_depth;
 310 };
 311
 312 #ifdef SUPPORT_OLD_POWER_EVENTS
 313 static int use_old_power_events;
 314 struct power_entry_old {
 315         struct trace_entry te;
 316         u64     type;
 317         u64     value;
 318         u64     cpu_id;
 319 };
 320 #endif
 321
 322 struct power_processor_entry {
 323         struct trace_entry te;
 324         u32     state;
 325         u32     cpu_id;
 326 };
 327
 328 #define TASK_COMM_LEN 16
 329 struct wakeup_entry {
 330         struct trace_entry te;
 331         char comm[TASK_COMM_LEN];
 332         int   pid;
 333         int   prio;
 334         int   success;
 335 };
 336
 337 struct sched_switch {
 338         struct trace_entry te;
 339         char prev_comm[TASK_COMM_LEN];
 340         int  prev_pid;
 341         int  prev_prio;
 342         long prev_state; /* Arjan weeps. */
 343         char next_comm[TASK_COMM_LEN];
 344         int  next_pid;
 345         int  next_prio;
 346 };
 347
 348 static void c_state_start(int cpu, u64 timestamp, int state)
 349 {
 350         cpus_cstate_start_times[cpu] = timestamp;
 351         cpus_cstate_state[cpu] = state;
 352 }
 353
 354 static void c_state_end(int cpu, u64 timestamp)
 355 {
 356         struct power_event *pwr = zalloc(sizeof(*pwr));
 357
 358         if (!pwr)
 359                 return;
 360
 361         pwr->state = cpus_cstate_state[cpu];
 362         pwr->start_time = cpus_cstate_start_times[cpu];
 363         pwr->end_time = timestamp;
 364         pwr->cpu = cpu;
 365         pwr->type = CSTATE;
 366         pwr->next = power_events;
 367
 368         power_events = pwr;
 369 }
 370
 371 static void p_state_change(int cpu, u64 timestamp, u64 new_freq)
 372 {
 373         struct power_event *pwr;
 374
 375         if (new_freq > 8000000) /* detect invalid data */
 376                 return;
 377
 378         pwr = zalloc(sizeof(*pwr));
 379         if (!pwr)
 380                 return;
 381
 382         pwr->state = cpus_pstate_state[cpu];
 383         pwr->start_time = cpus_pstate_start_times[cpu];
 384         pwr->end_time = timestamp;
 385         pwr->cpu = cpu;
 386         pwr->type = PSTATE;
 387         pwr->next = power_events;
 388
 389         if (!pwr->start_time)
 390                 pwr->start_time = first_time;
 391
 392         power_events = pwr;
 393
 394         cpus_pstate_state[cpu] = new_freq;
 395         cpus_pstate_start_times[cpu] = timestamp;
 396
 397         if ((u64)new_freq > max_freq)
 398                 max_freq = new_freq;
 399
 400         if (new_freq < min_freq || min_freq == 0)
 401                 min_freq = new_freq;
 402
 403         if (new_freq == max_freq - 1000)
 404                         turbo_frequency = max_freq;
 405 }
 406
 407 static void
 408 sched_wakeup(int cpu, u64 timestamp, int pid, struct trace_entry *te)
 409 {
 410         struct per_pid *p;
 411         struct wakeup_entry *wake = (void *)te;
 412         struct wake_event *we = zalloc(sizeof(*we));
 413
 414         if (!we)
 415                 return;
 416
 417         we->time = timestamp;
 418         we->waker = pid;
 419
 420         if ((te->flags & TRACE_FLAG_HARDIRQ) || (te->flags & TRACE_FLAG_SOFTIRQ))
 421                 we->waker = -1;
 422
 423         we->wakee = wake->pid;
 424         we->next = wake_events;
 425         wake_events = we;
 426         p = find_create_pid(we->wakee);
 427
 428         if (p && p->current && p->current->state == TYPE_NONE) {
 429                 p->current->state_since = timestamp;
 430                 p->current->state = TYPE_WAITING;
 431         }
 432         if (p && p->current && p->current->state == TYPE_BLOCKED) {
 433                 pid_put_sample(p->pid, p->current->state, cpu, p->current->state_since, timestamp);
 434                 p->current->state_since = timestamp;
 435                 p->current->state = TYPE_WAITING;
 436         }
 437 }
 438
 439 static void sched_switch(int cpu, u64 timestamp, struct trace_entry *te)
 440 {
 441         struct per_pid *p = NULL, *prev_p;
 442         struct sched_switch *sw = (void *)te;
 443
 444
 445         prev_p = find_create_pid(sw->prev_pid);
 446
 447         p = find_create_pid(sw->next_pid);
 448
 449         if (prev_p->current && prev_p->current->state != TYPE_NONE)
 450                 pid_put_sample(sw->prev_pid, TYPE_RUNNING, cpu, prev_p->current->state_since, timestamp);
 451         if (p && p->current) {
 452                 if (p->current->state != TYPE_NONE)
 453                         pid_put_sample(sw->next_pid, p->current->state, cpu, p->current->state_since, timestamp);
 454
 455                 p->current->state_since = timestamp;
 456                 p->current->state = TYPE_RUNNING;
 457         }
 458
 459         if (prev_p->current) {
 460                 prev_p->current->state = TYPE_NONE;
 461                 prev_p->current->state_since = timestamp;
 462                 if (sw->prev_state & 2)
 463                         prev_p->current->state = TYPE_BLOCKED;
 464                 if (sw->prev_state == 0)
 465                         prev_p->current->state = TYPE_WAITING;
 466         }
 467 }
 468
 469 typedef int (*tracepoint_handler)(struct perf_evsel *evsel,
 470                                   struct perf_sample *sample);
 471
 472 static int process_sample_event(struct perf_tool *tool __maybe_unused,
 473                                 union perf_event *event __maybe_unused,
 474                                 struct perf_sample *sample,
 475                                 struct perf_evsel *evsel,
 476                                 struct machine *machine __maybe_unused)
 477 {
 478         if (evsel->attr.sample_type & PERF_SAMPLE_TIME) {
 479                 if (!first_time || first_time > sample->time)
 480                         first_time = sample->time;
 481                 if (last_time < sample->time)
 482                         last_time = sample->time;
 483         }
 484
 485         if (sample->cpu > numcpus)
 486                 numcpus = sample->cpu;
 487
 488         if (evsel->handler != NULL) {
 489                 tracepoint_handler f = evsel->handler;
 490                 return f(evsel, sample);
 491         }
 492
 493         return 0;
 494 }
 495
 496 static int
 497 process_sample_cpu_idle(struct perf_evsel *evsel __maybe_unused,
 498                         struct perf_sample *sample)
 499 {
 500         struct power_processor_entry *ppe = sample->raw_data;
 501
 502         if (ppe->state == (u32) PWR_EVENT_EXIT)
 503                 c_state_end(ppe->cpu_id, sample->time);
 504         else
 505                 c_state_start(ppe->cpu_id, sample->time, ppe->state);
 506         return 0;
 507 }
 508
 509 static int
 510 process_sample_cpu_frequency(struct perf_evsel *evsel __maybe_unused,
 511                              struct perf_sample *sample)
 512 {
 513         struct power_processor_entry *ppe = sample->raw_data;
 514
 515         p_state_change(ppe->cpu_id, sample->time, ppe->state);
 516         return 0;
 517 }
 518
 519 static int
 520 process_sample_sched_wakeup(struct perf_evsel *evsel __maybe_unused,
 521                             struct perf_sample *sample)
 522 {
 523         struct trace_entry *te = sample->raw_data;
 524
 525         sched_wakeup(sample->cpu, sample->time, sample->pid, te);
 526         return 0;
 527 }
 528
 529 static int
 530 process_sample_sched_switch(struct perf_evsel *evsel __maybe_unused,
 531                             struct perf_sample *sample)
 532 {
 533         struct trace_entry *te = sample->raw_data;
 534
 535         sched_switch(sample->cpu, sample->time, te);
 536         return 0;
 537 }
 538
 539 #ifdef SUPPORT_OLD_POWER_EVENTS
 540 static int
 541 process_sample_power_start(struct perf_evsel *evsel __maybe_unused,
 542                            struct perf_sample *sample)
 543 {
 544         struct power_entry_old *peo = sample->raw_data;
 545
 546         c_state_start(peo->cpu_id, sample->time, peo->value);
 547         return 0;
 548 }
 549
 550 static int
 551 process_sample_power_end(struct perf_evsel *evsel __maybe_unused,
 552                          struct perf_sample *sample)
 553 {
 554         c_state_end(sample->cpu, sample->time);
 555         return 0;
 556 }
 557
 558 static int
 559 process_sample_power_frequency(struct perf_evsel *evsel __maybe_unused,
 560                                struct perf_sample *sample)
 561 {
 562         struct power_entry_old *peo = sample->raw_data;
 563
 564         p_state_change(peo->cpu_id, sample->time, peo->value);
 565         return 0;
 566 }
 567 #endif /* SUPPORT_OLD_POWER_EVENTS */
 568
 569 /*
 570  * After the last sample we need to wrap up the current C/P state
 571  * and close out each CPU for these.
 572  */
 573 static void end_sample_processing(void)
 574 {
 575         u64 cpu;
 576         struct power_event *pwr;
 577
 578         for (cpu = 0; cpu <= numcpus; cpu++) {
 579                 /* C state */
 580 #if 0
 581                 pwr = zalloc(sizeof(*pwr));
 582                 if (!pwr)
 583                         return;
 584
 585                 pwr->state = cpus_cstate_state[cpu];
 586                 pwr->start_time = cpus_cstate_start_times[cpu];
 587                 pwr->end_time = last_time;
 588                 pwr->cpu = cpu;
 589                 pwr->type = CSTATE;
 590                 pwr->next = power_events;
 591
 592                 power_events = pwr;
 593 #endif
 594                 /* P state */
 595
 596                 pwr = zalloc(sizeof(*pwr));
 597                 if (!pwr)
 598                         return;
 599
 600                 pwr->state = cpus_pstate_state[cpu];
 601                 pwr->start_time = cpus_pstate_start_times[cpu];
 602                 pwr->end_time = last_time;
 603                 pwr->cpu = cpu;
 604                 pwr->type = PSTATE;
 605                 pwr->next = power_events;
 606
 607                 if (!pwr->start_time)
 608                         pwr->start_time = first_time;
 609                 if (!pwr->state)
 610                         pwr->state = min_freq;
 611                 power_events = pwr;
 612         }
 613 }
 614
 615 /*
 616  * Sort the pid datastructure
 617  */
 618 static void sort_pids(void)
 619 {
 620         struct per_pid *new_list, *p, *cursor, *prev;
 621         /* sort by ppid first, then by pid, lowest to highest */
 622
 623         new_list = NULL;
 624
 625         while (all_data) {
 626                 p = all_data;
 627                 all_data = p->next;
 628                 p->next = NULL;
 629
 630                 if (new_list == NULL) {
 631                         new_list = p;
 632                         p->next = NULL;
 633                         continue;
 634                 }
 635                 prev = NULL;
 636                 cursor = new_list;
 637                 while (cursor) {
 638                         if (cursor->ppid > p->ppid ||
 639                                 (cursor->ppid == p->ppid && cursor->pid > p->pid)) {
 640                                 /* must insert before */
 641                                 if (prev) {
 642                                         p->next = prev->next;
 643                                         prev->next = p;
 644                                         cursor = NULL;
 645                                         continue;
 646                                 } else {
 647                                         p->next = new_list;
 648                                         new_list = p;
 649                                         cursor = NULL;
 650                                         continue;
 651                                 }
 652                         }
 653
 654                         prev = cursor;
 655                         cursor = cursor->next;
 656                         if (!cursor)
 657                                 prev->next = p;
 658                 }
 659         }
 660         all_data = new_list;
 661 }
 662
 663
 664 static void draw_c_p_states(void)
 665 {
 666         struct power_event *pwr;
 667         pwr = power_events;
 668
 669         /*
 670          * two pass drawing so that the P state bars are on top of the C state blocks
 671          */
 672         while (pwr) {
 673                 if (pwr->type == CSTATE)
 674                         svg_cstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);
 675                 pwr = pwr->next;
 676         }
 677
 678         pwr = power_events;
 679         while (pwr) {
 680                 if (pwr->type == PSTATE) {
 681                         if (!pwr->state)
 682                                 pwr->state = min_freq;
 683                         svg_pstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);
 684                 }
 685                 pwr = pwr->next;
 686         }
 687 }
 688
 689 static void draw_wakeups(void)
 690 {
 691         struct wake_event *we;
 692         struct per_pid *p;
 693         struct per_pidcomm *c;
 694
 695         we = wake_events;
 696         while (we) {
 697                 int from = 0, to = 0;
 698                 char *task_from = NULL, *task_to = NULL;
 699
 700                 /* locate the column of the waker and wakee */
 701                 p = all_data;
 702                 while (p) {
 703                         if (p->pid == we->waker || p->pid == we->wakee) {
 704                                 c = p->all;
 705                                 while (c) {
 706                                         if (c->Y && c->start_time <= we->time && c->end_time >= we->time) {
 707                                                 if (p->pid == we->waker && !from) {
 708                                                         from = c->Y;
 709                                                         task_from = strdup(c->comm);
 710                                                 }
 711                                                 if (p->pid == we->wakee && !to) {
 712                                                         to = c->Y;
 713                                                         task_to = strdup(c->comm);
 714                                                 }
 715                                         }
 716                                         c = c->next;
 717                                 }
 718                                 c = p->all;
 719                                 while (c) {
 720                                         if (p->pid == we->waker && !from) {
 721                                                 from = c->Y;
 722                                                 task_from = strdup(c->comm);
 723                                         }
 724                                         if (p->pid == we->wakee && !to) {
 725                                                 to = c->Y;
 726                                                 task_to = strdup(c->comm);
 727                                         }
 728                                         c = c->next;
 729                                 }
 730                         }
 731                         p = p->next;
 732                 }
 733
 734                 if (!task_from) {
 735                         task_from = malloc(40);
 736                         sprintf(task_from, "[%i]", we->waker);
 737                 }
 738                 if (!task_to) {
 739                         task_to = malloc(40);
 740                         sprintf(task_to, "[%i]", we->wakee);
 741                 }
 742
 743                 if (we->waker == -1)
 744                         svg_interrupt(we->time, to);
 745                 else if (from && to && abs(from - to) == 1)
 746                         svg_wakeline(we->time, from, to);
 747                 else
 748                         svg_partial_wakeline(we->time, from, task_from, to, task_to);
 749                 we = we->next;
 750
 751                 free(task_from);
 752                 free(task_to);
 753         }
 754 }
 755
 756 static void draw_cpu_usage(void)
 757 {
 758         struct per_pid *p;
 759         struct per_pidcomm *c;
 760         struct cpu_sample *sample;
 761         p = all_data;
 762         while (p) {
 763                 c = p->all;
 764                 while (c) {
 765                         sample = c->samples;
 766                         while (sample) {
 767                                 if (sample->type == TYPE_RUNNING)
 768                                         svg_process(sample->cpu, sample->start_time, sample->end_time, "sample", c->comm);
 769
 770                                 sample = sample->next;
 771                         }
 772                         c = c->next;
 773                 }
 774                 p = p->next;
 775         }
 776 }
 777
 778 static void draw_process_bars(void)
 779 {
 780         struct per_pid *p;
 781         struct per_pidcomm *c;
 782         struct cpu_sample *sample;
 783         int Y = 0;
 784
 785         Y = 2 * numcpus + 2;
 786
 787         p = all_data;
 788         while (p) {
 789                 c = p->all;
 790                 while (c) {
 791                         if (!c->display) {
 792                                 c->Y = 0;
 793                                 c = c->next;
 794                                 continue;
 795                         }
 796
 797                         svg_box(Y, c->start_time, c->end_time, "process");
 798                         sample = c->samples;
 799                         while (sample) {
 800                                 if (sample->type == TYPE_RUNNING)
 801                                         svg_running(Y, sample->cpu, sample->start_time, sample->end_time);
 802                                 if (sample->type == TYPE_BLOCKED)
 803                                         svg_blocked(Y, sample->cpu, sample->start_time, sample->end_time);
 804                                 if (sample->type == TYPE_WAITING)
 805                                         svg_waiting(Y, sample->cpu, sample->start_time, sample->end_time);
 806                                 sample = sample->next;
 807                         }
 808
 809                         if (c->comm) {
 810                                 char comm[256];
 811                                 if (c->total_time > 5000000000) /* 5 seconds */
 812                                         sprintf(comm, "%s:%i (%2.2fs)", c->comm, p->pid, c->total_time / 1000000000.0);
 813                                 else
 814                                         sprintf(comm, "%s:%i (%3.1fms)", c->comm, p->pid, c->total_time / 1000000.0);
 815
 816                                 svg_text(Y, c->start_time, comm);
 817                         }
 818                         c->Y = Y;
 819                         Y++;
 820                         c = c->next;
 821                 }
 822                 p = p->next;
 823         }
 824 }
 825
 826 static void add_process_filter(const char *string)
 827 {
 828         int pid = strtoull(string, NULL, 10);
 829         struct process_filter *filt = malloc(sizeof(*filt));
 830
 831         if (!filt)
 832                 return;
 833
 834         filt->name = strdup(string);
 835         filt->pid  = pid;
 836         filt->next = process_filter;
 837
 838         process_filter = filt;
 839 }
 840
 841 static int passes_filter(struct per_pid *p, struct per_pidcomm *c)
 842 {
 843         struct process_filter *filt;
 844         if (!process_filter)
 845                 return 1;
 846
 847         filt = process_filter;
 848         while (filt) {
 849                 if (filt->pid && p->pid == filt->pid)
 850                         return 1;
 851                 if (strcmp(filt->name, c->comm) == 0)
 852                         return 1;
 853                 filt = filt->next;
 854         }
 855         return 0;
 856 }
 857
 858 static int determine_display_tasks_filtered(void)
 859 {
 860         struct per_pid *p;
 861         struct per_pidcomm *c;
 862         int count = 0;
 863
 864         p = all_data;
 865         while (p) {
 866                 p->display = 0;
 867                 if (p->start_time == 1)
 868                         p->start_time = first_time;
 869
 870                 /* no exit marker, task kept running to the end */
 871                 if (p->end_time == 0)
 872                         p->end_time = last_time;
 873
 874                 c = p->all;
 875
 876                 while (c) {
 877                         c->display = 0;
 878
 879                         if (c->start_time == 1)
 880                                 c->start_time = first_time;
 881
 882                         if (passes_filter(p, c)) {
 883                                 c->display = 1;
 884                                 p->display = 1;
 885                                 count++;
 886                         }
 887
 888                         if (c->end_time == 0)
 889                                 c->end_time = last_time;
 890
 891                         c = c->next;
 892                 }
 893                 p = p->next;
 894         }
 895         return count;
 896 }
 897
 898 static int determine_display_tasks(u64 threshold)
 899 {
 900         struct per_pid *p;
 901         struct per_pidcomm *c;
 902         int count = 0;
 903
 904         if (process_filter)
 905                 return determine_display_tasks_filtered();
 906
 907         p = all_data;
 908         while (p) {
 909                 p->display = 0;
 910                 if (p->start_time == 1)
 911                         p->start_time = first_time;
 912
 913                 /* no exit marker, task kept running to the end */
 914                 if (p->end_time == 0)
 915                         p->end_time = last_time;
 916                 if (p->total_time >= threshold)
 917                         p->display = 1;
 918
 919                 c = p->all;
 920
 921                 while (c) {
 922                         c->display = 0;
 923
 924                         if (c->start_time == 1)
 925                                 c->start_time = first_time;
 926
 927                         if (c->total_time >= threshold) {
 928                                 c->display = 1;
 929                                 count++;
 930                         }
 931
 932                         if (c->end_time == 0)
 933                                 c->end_time = last_time;
 934
 935                         c = c->next;
 936                 }
 937                 p = p->next;
 938         }
 939         return count;
 940 }
 941
 942
 943
 944 #define TIME_THRESH 10000000
 945
 946 static void write_svg_file(const char *filename)
 947 {
 948         u64 i;
 949         int count;
 950         int thresh = TIME_THRESH;
 951
 952         numcpus++;
 953
 954         if (power_only)
 955                 proc_num = 0;
 956
 957         /* We'd like to show at least proc_num tasks;
 958          * be less picky if we have fewer */
 959         do {
 960                 count = determine_display_tasks(thresh);
 961                 thresh /= 10;
 962         } while (!process_filter && thresh && count < proc_num);
 963
 964         open_svg(filename, numcpus, count, first_time, last_time);
 965
 966         svg_time_grid();
 967         svg_legenda();
 968
 969         for (i = 0; i < numcpus; i++)
 970                 svg_cpu_box(i, max_freq, turbo_frequency);
 971
 972         draw_cpu_usage();
 973         if (proc_num)
 974                 draw_process_bars();
 975         if (!tasks_only)
 976                 draw_c_p_states();
 977         if (proc_num)
 978                 draw_wakeups();
 979
 980         svg_close();
 981 }
 982
 983 static int __cmd_timechart(const char *output_name)
 984 {
 985         struct perf_tool perf_timechart = {
 986                 .comm            = process_comm_event,
 987                 .fork            = process_fork_event,
 988                 .exit            = process_exit_event,
 989                 .sample          = process_sample_event,
 990                 .ordered_samples = true,
 991         };
 992         const struct perf_evsel_str_handler power_tracepoints[] = {
 993                 { "power:cpu_idle",             process_sample_cpu_idle },
 994                 { "power:cpu_frequency",        process_sample_cpu_frequency },
 995                 { "sched:sched_wakeup",         process_sample_sched_wakeup },
 996                 { "sched:sched_switch",         process_sample_sched_switch },
 997 #ifdef SUPPORT_OLD_POWER_EVENTS
 998                 { "power:power_start",          process_sample_power_start },
 999                 { "power:power_end",            process_sample_power_end },
1000                 { "power:power_frequency",      process_sample_power_frequency },
1001 #endif
1002         };
1003         struct perf_data_file file = {
1004                 .path = input_name,
1005                 .mode = PERF_DATA_MODE_READ,
1006         };
1007
1008         struct perf_session *session = perf_session__new(&file, false,
1009                                                          &perf_timechart);
1010         int ret = -EINVAL;
1011
1012         if (session == NULL)
1013                 return -ENOMEM;
1014
1015         if (!perf_session__has_traces(session, "timechart record"))
1016                 goto out_delete;
1017
1018         if (perf_session__set_tracepoints_handlers(session,
1019                                                    power_tracepoints)) {
1020                 pr_err("Initializing session tracepoint handlers failed\n");
1021                 goto out_delete;
1022         }
1023
1024         ret = perf_session__process_events(session, &perf_timechart);
1025         if (ret)
1026                 goto out_delete;
1027
1028         end_sample_processing();
1029
1030         sort_pids();
1031
1032         write_svg_file(output_name);
1033
1034         pr_info("Written %2.1f seconds of trace to %s.\n",
1035                 (last_time - first_time) / 1000000000.0, output_name);
1036 out_delete:
1037         perf_session__delete(session);
1038         return ret;
1039 }
1040
1041 static int __cmd_record(int argc, const char **argv)
1042 {
1043 #ifdef SUPPORT_OLD_POWER_EVENTS
1044         const char * const record_old_args[] = {
1045                 "record", "-a", "-R", "-c", "1",
1046                 "-e", "power:power_start",
1047                 "-e", "power:power_end",
1048                 "-e", "power:power_frequency",
1049                 "-e", "sched:sched_wakeup",
1050                 "-e", "sched:sched_switch",
1051         };
1052 #endif
1053         const char * const record_new_args[] = {
1054                 "record", "-a", "-R", "-c", "1",
1055                 "-e", "power:cpu_frequency",
1056                 "-e", "power:cpu_idle",
1057                 "-e", "sched:sched_wakeup",
1058                 "-e", "sched:sched_switch",
1059         };
1060         unsigned int rec_argc, i, j;
1061         const char **rec_argv;
1062         const char * const *record_args = record_new_args;
1063         unsigned int record_elems = ARRAY_SIZE(record_new_args);
1064
1065 #ifdef SUPPORT_OLD_POWER_EVENTS
1066         if (!is_valid_tracepoint("power:cpu_idle") &&
1067             is_valid_tracepoint("power:power_start")) {
1068                 use_old_power_events = 1;
1069                 record_args = record_old_args;
1070                 record_elems = ARRAY_SIZE(record_old_args);
1071         }
1072 #endif
1073
1074         rec_argc = record_elems + argc - 1;
1075         rec_argv = calloc(rec_argc + 1, sizeof(char *));
1076
1077         if (rec_argv == NULL)
1078                 return -ENOMEM;
1079
1080         for (i = 0; i < record_elems; i++)
1081                 rec_argv[i] = strdup(record_args[i]);
1082
1083         for (j = 1; j < (unsigned int)argc; j++, i++)
1084                 rec_argv[i] = argv[j];
1085
1086         return cmd_record(i, rec_argv, NULL);
1087 }
1088
1089 static int
1090 parse_process(const struct option *opt __maybe_unused, const char *arg,
1091               int __maybe_unused unset)
1092 {
1093         if (arg)
1094                 add_process_filter(arg);
1095         return 0;
1096 }
1097
1098 int cmd_timechart(int argc, const char **argv,
1099                   const char *prefix __maybe_unused)
1100 {
1101         const char *output_name = "output.svg";
1102         const struct option options[] = {
1103         OPT_STRING('i', "input", &input_name, "file", "input file name"),
1104         OPT_STRING('o', "output", &output_name, "file", "output file name"),
1105         OPT_INTEGER('w', "width", &svg_page_width, "page width"),
1106         OPT_BOOLEAN('P', "power-only", &power_only, "output power data only"),
1107         OPT_BOOLEAN('T', "tasks-only", &tasks_only,
1108                     "output processes data only"),
1109         OPT_CALLBACK('p', "process", NULL, "process",
1110                       "process selector. Pass a pid or process name.",
1111                        parse_process),
1112         OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
1113                     "Look for files with symbols relative to this directory"),
1114         OPT_INTEGER('n', "proc-num", &proc_num,
1115                     "min. number of tasks to print"),
1116         OPT_END()
1117         };
1118         const char * const timechart_usage[] = {
1119                 "perf timechart [<options>] {record}",
1120                 NULL
1121         };
1122
1123         argc = parse_options(argc, argv, options, timechart_usage,
1124                         PARSE_OPT_STOP_AT_NON_OPTION);
1125
1126         if (power_only && tasks_only) {
1127                 pr_err("-P and -T options cannot be used at the same time.\n");
1128                 return -1;
1129         }
1130
1131         symbol__init();
1132
1133         if (argc && !strncmp(argv[0], "rec", 3))
1134                 return __cmd_record(argc, argv);
1135         else if (argc)
1136                 usage_with_options(timechart_usage, options);
1137
1138         setup_pager();
1139
1140         return __cmd_timechart(output_name);
1141 }