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 "builtin.h"
  16
  17 #include "util/util.h"
  18
  19 #include "util/color.h"
  20 #include <linux/list.h>
  21 #include "util/cache.h"
  22 #include <linux/rbtree.h>
  23 #include "util/symbol.h"
  24 #include "util/string.h"
  25 #include "util/callchain.h"
  26 #include "util/strlist.h"
  27
  28 #include "perf.h"
  29 #include "util/header.h"
  30 #include "util/parse-options.h"
  31 #include "util/parse-events.h"
  32 #include "util/event.h"
  33 #include "util/session.h"
  34 #include "util/svghelper.h"
  35
  36 static char             const *input_name = "perf.data";
  37 static char             const *output_name = "output.svg";
  38
  39 static unsigned int     numcpus;
  40 static u64              min_freq;       /* Lowest CPU frequency seen */
  41 static u64              max_freq;       /* Highest CPU frequency seen */
  42 static u64              turbo_frequency;
  43
  44 static u64              first_time, last_time;
  45
  46 static int              power_only;
  47
  48
  49 struct per_pid;
  50 struct per_pidcomm;
  51
  52 struct cpu_sample;
  53 struct power_event;
  54 struct wake_event;
  55
  56 struct sample_wrapper;
  57
  58 /*
  59  * Datastructure layout:
  60  * We keep an list of "pid"s, matching the kernels notion of a task struct.
  61  * Each "pid" entry, has a list of "comm"s.
  62  *      this is because we want to track different programs different, while
  63  *      exec will reuse the original pid (by design).
  64  * Each comm has a list of samples that will be used to draw
  65  * final graph.
  66  */
  67
  68 struct per_pid {
  69         struct per_pid *next;
  70
  71         int             pid;
  72         int             ppid;
  73
  74         u64             start_time;
  75         u64             end_time;
  76         u64             total_time;
  77         int             display;
  78
  79         struct per_pidcomm *all;
  80         struct per_pidcomm *current;
  81
  82         int painted;
  83 };
  84
  85
  86 struct per_pidcomm {
  87         struct per_pidcomm *next;
  88
  89         u64             start_time;
  90         u64             end_time;
  91         u64             total_time;
  92
  93         int             Y;
  94         int             display;
  95
  96         long            state;
  97         u64             state_since;
  98
  99         char            *comm;
 100
 101         struct cpu_sample *samples;
 102 };
 103
 104 struct sample_wrapper {
 105         struct sample_wrapper *next;
 106
 107         u64             timestamp;
 108         unsigned char   data[0];
 109 };
 110
 111 #define TYPE_NONE       0
 112 #define TYPE_RUNNING    1
 113 #define TYPE_WAITING    2
 114 #define TYPE_BLOCKED    3
 115
 116 struct cpu_sample {
 117         struct cpu_sample *next;
 118
 119         u64 start_time;
 120         u64 end_time;
 121         int type;
 122         int cpu;
 123 };
 124
 125 static struct per_pid *all_data;
 126
 127 #define CSTATE 1
 128 #define PSTATE 2
 129
 130 struct power_event {
 131         struct power_event *next;
 132         int type;
 133         int state;
 134         u64 start_time;
 135         u64 end_time;
 136         int cpu;
 137 };
 138
 139 struct wake_event {
 140         struct wake_event *next;
 141         int waker;
 142         int wakee;
 143         u64 time;
 144 };
 145
 146 static struct power_event    *power_events;
 147 static struct wake_event     *wake_events;
 148
 149 struct sample_wrapper *all_samples;
 150
 151
 152 struct process_filter;
 153 struct process_filter {
 154         char                    *name;
 155         int                     pid;
 156         struct process_filter   *next;
 157 };
 158
 159 static struct process_filter *process_filter;
 160
 161
 162 static struct per_pid *find_create_pid(int pid)
 163 {
 164         struct per_pid *cursor = all_data;
 165
 166         while (cursor) {
 167                 if (cursor->pid == pid)
 168                         return cursor;
 169                 cursor = cursor->next;
 170         }
 171         cursor = malloc(sizeof(struct per_pid));
 172         assert(cursor != NULL);
 173         memset(cursor, 0, sizeof(struct per_pid));
 174         cursor->pid = pid;
 175         cursor->next = all_data;
 176         all_data = cursor;
 177         return cursor;
 178 }
 179
 180 static void pid_set_comm(int pid, char *comm)
 181 {
 182         struct per_pid *p;
 183         struct per_pidcomm *c;
 184         p = find_create_pid(pid);
 185         c = p->all;
 186         while (c) {
 187                 if (c->comm && strcmp(c->comm, comm) == 0) {
 188                         p->current = c;
 189                         return;
 190                 }
 191                 if (!c->comm) {
 192                         c->comm = strdup(comm);
 193                         p->current = c;
 194                         return;
 195                 }
 196                 c = c->next;
 197         }
 198         c = malloc(sizeof(struct per_pidcomm));
 199         assert(c != NULL);
 200         memset(c, 0, sizeof(struct per_pidcomm));
 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 = malloc(sizeof(struct per_pidcomm));
 243                 assert(c != NULL);
 244                 memset(c, 0, sizeof(struct per_pidcomm));
 245                 p->current = c;
 246                 c->next = p->all;
 247                 p->all = c;
 248         }
 249
 250         sample = malloc(sizeof(struct cpu_sample));
 251         assert(sample != NULL);
 252         memset(sample, 0, sizeof(struct cpu_sample));
 253         sample->start_time = start;
 254         sample->end_time = end;
 255         sample->type = type;
 256         sample->next = c->samples;
 257         sample->cpu = cpu;
 258         c->samples = sample;
 259
 260         if (sample->type == TYPE_RUNNING && end > start && start > 0) {
 261                 c->total_time += (end-start);
 262                 p->total_time += (end-start);
 263         }
 264
 265         if (c->start_time == 0 || c->start_time > start)
 266                 c->start_time = start;
 267         if (p->start_time == 0 || p->start_time > start)
 268                 p->start_time = start;
 269
 270         if (cpu > numcpus)
 271                 numcpus = cpu;
 272 }
 273
 274 #define MAX_CPUS 4096
 275
 276 static u64 cpus_cstate_start_times[MAX_CPUS];
 277 static int cpus_cstate_state[MAX_CPUS];
 278 static u64 cpus_pstate_start_times[MAX_CPUS];
 279 static u64 cpus_pstate_state[MAX_CPUS];
 280
 281 static int process_comm_event(event_t *event, struct perf_session *session __used)
 282 {
 283         pid_set_comm(event->comm.tid, event->comm.comm);
 284         return 0;
 285 }
 286
 287 static int process_fork_event(event_t *event, struct perf_session *session __used)
 288 {
 289         pid_fork(event->fork.pid, event->fork.ppid, event->fork.time);
 290         return 0;
 291 }
 292
 293 static int process_exit_event(event_t *event, struct perf_session *session __used)
 294 {
 295         pid_exit(event->fork.pid, event->fork.time);
 296         return 0;
 297 }
 298
 299 struct trace_entry {
 300         unsigned short          type;
 301         unsigned char           flags;
 302         unsigned char           preempt_count;
 303         int                     pid;
 304         int                     lock_depth;
 305 };
 306
 307 struct power_entry {
 308         struct trace_entry te;
 309         s64     type;
 310         s64     value;
 311 };
 312
 313 #define TASK_COMM_LEN 16
 314 struct wakeup_entry {
 315         struct trace_entry te;
 316         char comm[TASK_COMM_LEN];
 317         int   pid;
 318         int   prio;
 319         int   success;
 320 };
 321
 322 /*
 323  * trace_flag_type is an enumeration that holds different
 324  * states when a trace occurs. These are:
 325  *  IRQS_OFF            - interrupts were disabled
 326  *  IRQS_NOSUPPORT      - arch does not support irqs_disabled_flags
 327  *  NEED_RESCED         - reschedule is requested
 328  *  HARDIRQ             - inside an interrupt handler
 329  *  SOFTIRQ             - inside a softirq handler
 330  */
 331 enum trace_flag_type {
 332         TRACE_FLAG_IRQS_OFF             = 0x01,
 333         TRACE_FLAG_IRQS_NOSUPPORT       = 0x02,
 334         TRACE_FLAG_NEED_RESCHED         = 0x04,
 335         TRACE_FLAG_HARDIRQ              = 0x08,
 336         TRACE_FLAG_SOFTIRQ              = 0x10,
 337 };
 338
 339
 340
 341 struct sched_switch {
 342         struct trace_entry te;
 343         char prev_comm[TASK_COMM_LEN];
 344         int  prev_pid;
 345         int  prev_prio;
 346         long prev_state; /* Arjan weeps. */
 347         char next_comm[TASK_COMM_LEN];
 348         int  next_pid;
 349         int  next_prio;
 350 };
 351
 352 static void c_state_start(int cpu, u64 timestamp, int state)
 353 {
 354         cpus_cstate_start_times[cpu] = timestamp;
 355         cpus_cstate_state[cpu] = state;
 356 }
 357
 358 static void c_state_end(int cpu, u64 timestamp)
 359 {
 360         struct power_event *pwr;
 361         pwr = malloc(sizeof(struct power_event));
 362         if (!pwr)
 363                 return;
 364         memset(pwr, 0, sizeof(struct power_event));
 365
 366         pwr->state = cpus_cstate_state[cpu];
 367         pwr->start_time = cpus_cstate_start_times[cpu];
 368         pwr->end_time = timestamp;
 369         pwr->cpu = cpu;
 370         pwr->type = CSTATE;
 371         pwr->next = power_events;
 372
 373         power_events = pwr;
 374 }
 375
 376 static void p_state_change(int cpu, u64 timestamp, u64 new_freq)
 377 {
 378         struct power_event *pwr;
 379         pwr = malloc(sizeof(struct power_event));
 380
 381         if (new_freq > 8000000) /* detect invalid data */
 382                 return;
 383
 384         if (!pwr)
 385                 return;
 386         memset(pwr, 0, sizeof(struct power_event));
 387
 388         pwr->state = cpus_pstate_state[cpu];
 389         pwr->start_time = cpus_pstate_start_times[cpu];
 390         pwr->end_time = timestamp;
 391         pwr->cpu = cpu;
 392         pwr->type = PSTATE;
 393         pwr->next = power_events;
 394
 395         if (!pwr->start_time)
 396                 pwr->start_time = first_time;
 397
 398         power_events = pwr;
 399
 400         cpus_pstate_state[cpu] = new_freq;
 401         cpus_pstate_start_times[cpu] = timestamp;
 402
 403         if ((u64)new_freq > max_freq)
 404                 max_freq = new_freq;
 405
 406         if (new_freq < min_freq || min_freq == 0)
 407                 min_freq = new_freq;
 408
 409         if (new_freq == max_freq - 1000)
 410                         turbo_frequency = max_freq;
 411 }
 412
 413 static void
 414 sched_wakeup(int cpu, u64 timestamp, int pid, struct trace_entry *te)
 415 {
 416         struct wake_event *we;
 417         struct per_pid *p;
 418         struct wakeup_entry *wake = (void *)te;
 419
 420         we = malloc(sizeof(struct wake_event));
 421         if (!we)
 422                 return;
 423
 424         memset(we, 0, sizeof(struct wake_event));
 425         we->time = timestamp;
 426         we->waker = pid;
 427
 428         if ((te->flags & TRACE_FLAG_HARDIRQ) || (te->flags & TRACE_FLAG_SOFTIRQ))
 429                 we->waker = -1;
 430
 431         we->wakee = wake->pid;
 432         we->next = wake_events;
 433         wake_events = we;
 434         p = find_create_pid(we->wakee);
 435
 436         if (p && p->current && p->current->state == TYPE_NONE) {
 437                 p->current->state_since = timestamp;
 438                 p->current->state = TYPE_WAITING;
 439         }
 440         if (p && p->current && p->current->state == TYPE_BLOCKED) {
 441                 pid_put_sample(p->pid, p->current->state, cpu, p->current->state_since, timestamp);
 442                 p->current->state_since = timestamp;
 443                 p->current->state = TYPE_WAITING;
 444         }
 445 }
 446
 447 static void sched_switch(int cpu, u64 timestamp, struct trace_entry *te)
 448 {
 449         struct per_pid *p = NULL, *prev_p;
 450         struct sched_switch *sw = (void *)te;
 451
 452
 453         prev_p = find_create_pid(sw->prev_pid);
 454
 455         p = find_create_pid(sw->next_pid);
 456
 457         if (prev_p->current && prev_p->current->state != TYPE_NONE)
 458                 pid_put_sample(sw->prev_pid, TYPE_RUNNING, cpu, prev_p->current->state_since, timestamp);
 459         if (p && p->current) {
 460                 if (p->current->state != TYPE_NONE)
 461                         pid_put_sample(sw->next_pid, p->current->state, cpu, p->current->state_since, timestamp);
 462
 463                         p->current->state_since = timestamp;
 464                         p->current->state = TYPE_RUNNING;
 465         }
 466
 467         if (prev_p->current) {
 468                 prev_p->current->state = TYPE_NONE;
 469                 prev_p->current->state_since = timestamp;
 470                 if (sw->prev_state & 2)
 471                         prev_p->current->state = TYPE_BLOCKED;
 472                 if (sw->prev_state == 0)
 473                         prev_p->current->state = TYPE_WAITING;
 474         }
 475 }
 476
 477
 478 static int process_sample_event(event_t *event, struct perf_session *session)
 479 {
 480         struct sample_data data;
 481         struct trace_entry *te;
 482
 483         memset(&data, 0, sizeof(data));
 484
 485         event__parse_sample(event, session->sample_type, &data);
 486
 487         if (session->sample_type & PERF_SAMPLE_TIME) {
 488                 if (!first_time || first_time > data.time)
 489                         first_time = data.time;
 490                 if (last_time < data.time)
 491                         last_time = data.time;
 492         }
 493
 494         te = (void *)data.raw_data;
 495         if (session->sample_type & PERF_SAMPLE_RAW && data.raw_size > 0) {
 496                 char *event_str;
 497                 struct power_entry *pe;
 498
 499                 pe = (void *)te;
 500
 501                 event_str = perf_header__find_event(te->type);
 502
 503                 if (!event_str)
 504                         return 0;
 505
 506                 if (strcmp(event_str, "power:power_start") == 0)
 507                         c_state_start(data.cpu, data.time, pe->value);
 508
 509                 if (strcmp(event_str, "power:power_end") == 0)
 510                         c_state_end(data.cpu, data.time);
 511
 512                 if (strcmp(event_str, "power:power_frequency") == 0)
 513                         p_state_change(data.cpu, data.time, pe->value);
 514
 515                 if (strcmp(event_str, "sched:sched_wakeup") == 0)
 516                         sched_wakeup(data.cpu, data.time, data.pid, te);
 517
 518                 if (strcmp(event_str, "sched:sched_switch") == 0)
 519                         sched_switch(data.cpu, data.time, te);
 520         }
 521         return 0;
 522 }
 523
 524 /*
 525  * After the last sample we need to wrap up the current C/P state
 526  * and close out each CPU for these.
 527  */
 528 static void end_sample_processing(void)
 529 {
 530         u64 cpu;
 531         struct power_event *pwr;
 532
 533         for (cpu = 0; cpu <= numcpus; cpu++) {
 534                 pwr = malloc(sizeof(struct power_event));
 535                 if (!pwr)
 536                         return;
 537                 memset(pwr, 0, sizeof(struct power_event));
 538
 539                 /* C state */
 540 #if 0
 541                 pwr->state = cpus_cstate_state[cpu];
 542                 pwr->start_time = cpus_cstate_start_times[cpu];
 543                 pwr->end_time = last_time;
 544                 pwr->cpu = cpu;
 545                 pwr->type = CSTATE;
 546                 pwr->next = power_events;
 547
 548                 power_events = pwr;
 549 #endif
 550                 /* P state */
 551
 552                 pwr = malloc(sizeof(struct power_event));
 553                 if (!pwr)
 554                         return;
 555                 memset(pwr, 0, sizeof(struct power_event));
 556
 557                 pwr->state = cpus_pstate_state[cpu];
 558                 pwr->start_time = cpus_pstate_start_times[cpu];
 559                 pwr->end_time = last_time;
 560                 pwr->cpu = cpu;
 561                 pwr->type = PSTATE;
 562                 pwr->next = power_events;
 563
 564                 if (!pwr->start_time)
 565                         pwr->start_time = first_time;
 566                 if (!pwr->state)
 567                         pwr->state = min_freq;
 568                 power_events = pwr;
 569         }
 570 }
 571
 572 static u64 sample_time(event_t *event, const struct perf_session *session)
 573 {
 574         int cursor;
 575
 576         cursor = 0;
 577         if (session->sample_type & PERF_SAMPLE_IP)
 578                 cursor++;
 579         if (session->sample_type & PERF_SAMPLE_TID)
 580                 cursor++;
 581         if (session->sample_type & PERF_SAMPLE_TIME)
 582                 return event->sample.array[cursor];
 583         return 0;
 584 }
 585
 586
 587 /*
 588  * We first queue all events, sorted backwards by insertion.
 589  * The order will get flipped later.
 590  */
 591 static int queue_sample_event(event_t *event, struct perf_session *session)
 592 {
 593         struct sample_wrapper *copy, *prev;
 594         int size;
 595
 596         size = event->sample.header.size + sizeof(struct sample_wrapper) + 8;
 597
 598         copy = malloc(size);
 599         if (!copy)
 600                 return 1;
 601
 602         memset(copy, 0, size);
 603
 604         copy->next = NULL;
 605         copy->timestamp = sample_time(event, session);
 606
 607         memcpy(&copy->data, event, event->sample.header.size);
 608
 609         /* insert in the right place in the list */
 610
 611         if (!all_samples) {
 612                 /* first sample ever */
 613                 all_samples = copy;
 614                 return 0;
 615         }
 616
 617         if (all_samples->timestamp < copy->timestamp) {
 618                 /* insert at the head of the list */
 619                 copy->next = all_samples;
 620                 all_samples = copy;
 621                 return 0;
 622         }
 623
 624         prev = all_samples;
 625         while (prev->next) {
 626                 if (prev->next->timestamp < copy->timestamp) {
 627                         copy->next = prev->next;
 628                         prev->next = copy;
 629                         return 0;
 630                 }
 631                 prev = prev->next;
 632         }
 633         /* insert at the end of the list */
 634         prev->next = copy;
 635
 636         return 0;
 637 }
 638
 639 static void sort_queued_samples(void)
 640 {
 641         struct sample_wrapper *cursor, *next;
 642
 643         cursor = all_samples;
 644         all_samples = NULL;
 645
 646         while (cursor) {
 647                 next = cursor->next;
 648                 cursor->next = all_samples;
 649                 all_samples = cursor;
 650                 cursor = next;
 651         }
 652 }
 653
 654 /*
 655  * Sort the pid datastructure
 656  */
 657 static void sort_pids(void)
 658 {
 659         struct per_pid *new_list, *p, *cursor, *prev;
 660         /* sort by ppid first, then by pid, lowest to highest */
 661
 662         new_list = NULL;
 663
 664         while (all_data) {
 665                 p = all_data;
 666                 all_data = p->next;
 667                 p->next = NULL;
 668
 669                 if (new_list == NULL) {
 670                         new_list = p;
 671                         p->next = NULL;
 672                         continue;
 673                 }
 674                 prev = NULL;
 675                 cursor = new_list;
 676                 while (cursor) {
 677                         if (cursor->ppid > p->ppid ||
 678                                 (cursor->ppid == p->ppid && cursor->pid > p->pid)) {
 679                                 /* must insert before */
 680                                 if (prev) {
 681                                         p->next = prev->next;
 682                                         prev->next = p;
 683                                         cursor = NULL;
 684                                         continue;
 685                                 } else {
 686                                         p->next = new_list;
 687                                         new_list = p;
 688                                         cursor = NULL;
 689                                         continue;
 690                                 }
 691                         }
 692
 693                         prev = cursor;
 694                         cursor = cursor->next;
 695                         if (!cursor)
 696                                 prev->next = p;
 697                 }
 698         }
 699         all_data = new_list;
 700 }
 701
 702
 703 static void draw_c_p_states(void)
 704 {
 705         struct power_event *pwr;
 706         pwr = power_events;
 707
 708         /*
 709          * two pass drawing so that the P state bars are on top of the C state blocks
 710          */
 711         while (pwr) {
 712                 if (pwr->type == CSTATE)
 713                         svg_cstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);
 714                 pwr = pwr->next;
 715         }
 716
 717         pwr = power_events;
 718         while (pwr) {
 719                 if (pwr->type == PSTATE) {
 720                         if (!pwr->state)
 721                                 pwr->state = min_freq;
 722                         svg_pstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);
 723                 }
 724                 pwr = pwr->next;
 725         }
 726 }
 727
 728 static void draw_wakeups(void)
 729 {
 730         struct wake_event *we;
 731         struct per_pid *p;
 732         struct per_pidcomm *c;
 733
 734         we = wake_events;
 735         while (we) {
 736                 int from = 0, to = 0;
 737                 char *task_from = NULL, *task_to = NULL;
 738
 739                 /* locate the column of the waker and wakee */
 740                 p = all_data;
 741                 while (p) {
 742                         if (p->pid == we->waker || p->pid == we->wakee) {
 743                                 c = p->all;
 744                                 while (c) {
 745                                         if (c->Y && c->start_time <= we->time && c->end_time >= we->time) {
 746                                                 if (p->pid == we->waker && !from) {
 747                                                         from = c->Y;
 748                                                         task_from = strdup(c->comm);
 749                                                 }
 750                                                 if (p->pid == we->wakee && !to) {
 751                                                         to = c->Y;
 752                                                         task_to = strdup(c->comm);
 753                                                 }
 754                                         }
 755                                         c = c->next;
 756                                 }
 757                                 c = p->all;
 758                                 while (c) {
 759                                         if (p->pid == we->waker && !from) {
 760                                                 from = c->Y;
 761                                                 task_from = strdup(c->comm);
 762                                         }
 763                                         if (p->pid == we->wakee && !to) {
 764                                                 to = c->Y;
 765                                                 task_to = strdup(c->comm);
 766                                         }
 767                                         c = c->next;
 768                                 }
 769                         }
 770                         p = p->next;
 771                 }
 772
 773                 if (!task_from) {
 774                         task_from = malloc(40);
 775                         sprintf(task_from, "[%i]", we->waker);
 776                 }
 777                 if (!task_to) {
 778                         task_to = malloc(40);
 779                         sprintf(task_to, "[%i]", we->wakee);
 780                 }
 781
 782                 if (we->waker == -1)
 783                         svg_interrupt(we->time, to);
 784                 else if (from && to && abs(from - to) == 1)
 785                         svg_wakeline(we->time, from, to);
 786                 else
 787                         svg_partial_wakeline(we->time, from, task_from, to, task_to);
 788                 we = we->next;
 789
 790                 free(task_from);
 791                 free(task_to);
 792         }
 793 }
 794
 795 static void draw_cpu_usage(void)
 796 {
 797         struct per_pid *p;
 798         struct per_pidcomm *c;
 799         struct cpu_sample *sample;
 800         p = all_data;
 801         while (p) {
 802                 c = p->all;
 803                 while (c) {
 804                         sample = c->samples;
 805                         while (sample) {
 806                                 if (sample->type == TYPE_RUNNING)
 807                                         svg_process(sample->cpu, sample->start_time, sample->end_time, "sample", c->comm);
 808
 809                                 sample = sample->next;
 810                         }
 811                         c = c->next;
 812                 }
 813                 p = p->next;
 814         }
 815 }
 816
 817 static void draw_process_bars(void)
 818 {
 819         struct per_pid *p;
 820         struct per_pidcomm *c;
 821         struct cpu_sample *sample;
 822         int Y = 0;
 823
 824         Y = 2 * numcpus + 2;
 825
 826         p = all_data;
 827         while (p) {
 828                 c = p->all;
 829                 while (c) {
 830                         if (!c->display) {
 831                                 c->Y = 0;
 832                                 c = c->next;
 833                                 continue;
 834                         }
 835
 836                         svg_box(Y, c->start_time, c->end_time, "process");
 837                         sample = c->samples;
 838                         while (sample) {
 839                                 if (sample->type == TYPE_RUNNING)
 840                                         svg_sample(Y, sample->cpu, sample->start_time, sample->end_time);
 841                                 if (sample->type == TYPE_BLOCKED)
 842                                         svg_box(Y, sample->start_time, sample->end_time, "blocked");
 843                                 if (sample->type == TYPE_WAITING)
 844                                         svg_waiting(Y, sample->start_time, sample->end_time);
 845                                 sample = sample->next;
 846                         }
 847
 848                         if (c->comm) {
 849                                 char comm[256];
 850                                 if (c->total_time > 5000000000) /* 5 seconds */
 851                                         sprintf(comm, "%s:%i (%2.2fs)", c->comm, p->pid, c->total_time / 1000000000.0);
 852                                 else
 853                                         sprintf(comm, "%s:%i (%3.1fms)", c->comm, p->pid, c->total_time / 1000000.0);
 854
 855                                 svg_text(Y, c->start_time, comm);
 856                         }
 857                         c->Y = Y;
 858                         Y++;
 859                         c = c->next;
 860                 }
 861                 p = p->next;
 862         }
 863 }
 864
 865 static void add_process_filter(const char *string)
 866 {
 867         struct process_filter *filt;
 868         int pid;
 869
 870         pid = strtoull(string, NULL, 10);
 871         filt = malloc(sizeof(struct process_filter));
 872         if (!filt)
 873                 return;
 874
 875         filt->name = strdup(string);
 876         filt->pid  = pid;
 877         filt->next = process_filter;
 878
 879         process_filter = filt;
 880 }
 881
 882 static int passes_filter(struct per_pid *p, struct per_pidcomm *c)
 883 {
 884         struct process_filter *filt;
 885         if (!process_filter)
 886                 return 1;
 887
 888         filt = process_filter;
 889         while (filt) {
 890                 if (filt->pid && p->pid == filt->pid)
 891                         return 1;
 892                 if (strcmp(filt->name, c->comm) == 0)
 893                         return 1;
 894                 filt = filt->next;
 895         }
 896         return 0;
 897 }
 898
 899 static int determine_display_tasks_filtered(void)
 900 {
 901         struct per_pid *p;
 902         struct per_pidcomm *c;
 903         int count = 0;
 904
 905         p = all_data;
 906         while (p) {
 907                 p->display = 0;
 908                 if (p->start_time == 1)
 909                         p->start_time = first_time;
 910
 911                 /* no exit marker, task kept running to the end */
 912                 if (p->end_time == 0)
 913                         p->end_time = last_time;
 914
 915                 c = p->all;
 916
 917                 while (c) {
 918                         c->display = 0;
 919
 920                         if (c->start_time == 1)
 921                                 c->start_time = first_time;
 922
 923                         if (passes_filter(p, c)) {
 924                                 c->display = 1;
 925                                 p->display = 1;
 926                                 count++;
 927                         }
 928
 929                         if (c->end_time == 0)
 930                                 c->end_time = last_time;
 931
 932                         c = c->next;
 933                 }
 934                 p = p->next;
 935         }
 936         return count;
 937 }
 938
 939 static int determine_display_tasks(u64 threshold)
 940 {
 941         struct per_pid *p;
 942         struct per_pidcomm *c;
 943         int count = 0;
 944
 945         if (process_filter)
 946                 return determine_display_tasks_filtered();
 947
 948         p = all_data;
 949         while (p) {
 950                 p->display = 0;
 951                 if (p->start_time == 1)
 952                         p->start_time = first_time;
 953
 954                 /* no exit marker, task kept running to the end */
 955                 if (p->end_time == 0)
 956                         p->end_time = last_time;
 957                 if (p->total_time >= threshold && !power_only)
 958                         p->display = 1;
 959
 960                 c = p->all;
 961
 962                 while (c) {
 963                         c->display = 0;
 964
 965                         if (c->start_time == 1)
 966                                 c->start_time = first_time;
 967
 968                         if (c->total_time >= threshold && !power_only) {
 969                                 c->display = 1;
 970                                 count++;
 971                         }
 972
 973                         if (c->end_time == 0)
 974                                 c->end_time = last_time;
 975
 976                         c = c->next;
 977                 }
 978                 p = p->next;
 979         }
 980         return count;
 981 }
 982
 983
 984
 985 #define TIME_THRESH 10000000
 986
 987 static void write_svg_file(const char *filename)
 988 {
 989         u64 i;
 990         int count;
 991
 992         numcpus++;
 993
 994
 995         count = determine_display_tasks(TIME_THRESH);
 996
 997         /* We'd like to show at least 15 tasks; be less picky if we have fewer */
 998         if (count < 15)
 999                 count = determine_display_tasks(TIME_THRESH / 10);
1000
1001         open_svg(filename, numcpus, count, first_time, last_time);
1002
1003         svg_time_grid();
1004         svg_legenda();
1005
1006         for (i = 0; i < numcpus; i++)
1007                 svg_cpu_box(i, max_freq, turbo_frequency);
1008
1009         draw_cpu_usage();
1010         draw_process_bars();
1011         draw_c_p_states();
1012         draw_wakeups();
1013
1014         svg_close();
1015 }
1016
1017 static void process_samples(struct perf_session *session)
1018 {
1019         struct sample_wrapper *cursor;
1020         event_t *event;
1021
1022         sort_queued_samples();
1023
1024         cursor = all_samples;
1025         while (cursor) {
1026                 event = (void *)&cursor->data;
1027                 cursor = cursor->next;
1028                 process_sample_event(event, session);
1029         }
1030 }
1031
1032 static int sample_type_check(struct perf_session *session)
1033 {
1034         if (!(session->sample_type & PERF_SAMPLE_RAW)) {
1035                 fprintf(stderr, "No trace samples found in the file.\n"
1036                                 "Have you used 'perf timechart record' to record it?\n");
1037                 return -1;
1038         }
1039
1040         return 0;
1041 }
1042
1043 static struct perf_event_ops event_ops = {
1044         .process_comm_event     = process_comm_event,
1045         .process_fork_event     = process_fork_event,
1046         .process_exit_event     = process_exit_event,
1047         .process_sample_event   = queue_sample_event,
1048         .sample_type_check      = sample_type_check,
1049 };
1050
1051 static int __cmd_timechart(void)
1052 {
1053         struct perf_session *session = perf_session__new(input_name, O_RDONLY, 0);
1054         int ret;
1055
1056         if (session == NULL)
1057                 return -ENOMEM;
1058
1059         ret = perf_session__process_events(session, &event_ops);
1060         if (ret)
1061                 goto out_delete;
1062
1063         process_samples(session);
1064
1065         end_sample_processing();
1066
1067         sort_pids();
1068
1069         write_svg_file(output_name);
1070
1071         pr_info("Written %2.1f seconds of trace to %s.\n",
1072                 (last_time - first_time) / 1000000000.0, output_name);
1073 out_delete:
1074         perf_session__delete(session);
1075         return ret;
1076 }
1077
1078 static const char * const timechart_usage[] = {
1079         "perf timechart [<options>] {record}",
1080         NULL
1081 };
1082
1083 static const char *record_args[] = {
1084         "record",
1085         "-a",
1086         "-R",
1087         "-M",
1088         "-f",
1089         "-c", "1",
1090         "-e", "power:power_start",
1091         "-e", "power:power_end",
1092         "-e", "power:power_frequency",
1093         "-e", "sched:sched_wakeup",
1094         "-e", "sched:sched_switch",
1095 };
1096
1097 static int __cmd_record(int argc, const char **argv)
1098 {
1099         unsigned int rec_argc, i, j;
1100         const char **rec_argv;
1101
1102         rec_argc = ARRAY_SIZE(record_args) + argc - 1;
1103         rec_argv = calloc(rec_argc + 1, sizeof(char *));
1104
1105         for (i = 0; i < ARRAY_SIZE(record_args); i++)
1106                 rec_argv[i] = strdup(record_args[i]);
1107
1108         for (j = 1; j < (unsigned int)argc; j++, i++)
1109                 rec_argv[i] = argv[j];
1110
1111         return cmd_record(i, rec_argv, NULL);
1112 }
1113
1114 static int
1115 parse_process(const struct option *opt __used, const char *arg, int __used unset)
1116 {
1117         if (arg)
1118                 add_process_filter(arg);
1119         return 0;
1120 }
1121
1122 static const struct option options[] = {
1123         OPT_STRING('i', "input", &input_name, "file",
1124                     "input file name"),
1125         OPT_STRING('o', "output", &output_name, "file",
1126                     "output file name"),
1127         OPT_INTEGER('w', "width", &svg_page_width,
1128                     "page width"),
1129         OPT_BOOLEAN('P', "power-only", &power_only,
1130                     "output power data only"),
1131         OPT_CALLBACK('p', "process", NULL, "process",
1132                       "process selector. Pass a pid or process name.",
1133                        parse_process),
1134         OPT_END()
1135 };
1136
1137
1138 int cmd_timechart(int argc, const char **argv, const char *prefix __used)
1139 {
1140         argc = parse_options(argc, argv, options, timechart_usage,
1141                         PARSE_OPT_STOP_AT_NON_OPTION);
1142
1143         symbol__init();
1144
1145         if (argc && !strncmp(argv[0], "rec", 3))
1146                 return __cmd_record(argc, argv);
1147         else if (argc)
1148                 usage_with_options(timechart_usage, options);
1149
1150         setup_pager();
1151
1152         return __cmd_timechart();
1153 }