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