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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * builtin-timechart.c - make an svg timechart of system activity4 *5 * (C) Copyright 2009 Intel Corporation6 *7 * Authors:8 * Arjan van de Ven <arjan@linux.intel.com>9 */10 11#include <errno.h>12#include <inttypes.h>13 14#include "builtin.h"15#include "util/color.h"16#include <linux/list.h>17#include "util/evlist.h" // for struct evsel_str_handler18#include "util/evsel.h"19#include <linux/kernel.h>20#include <linux/rbtree.h>21#include <linux/time64.h>22#include <linux/zalloc.h>23#include "util/symbol.h"24#include "util/thread.h"25#include "util/callchain.h"26 27#include "util/header.h"28#include <subcmd/pager.h>29#include <subcmd/parse-options.h>30#include "util/parse-events.h"31#include "util/event.h"32#include "util/session.h"33#include "util/svghelper.h"34#include "util/tool.h"35#include "util/data.h"36#include "util/debug.h"37#include "util/string2.h"38#include "util/tracepoint.h"39#include "util/util.h"40#include <linux/err.h>41#include <traceevent/event-parse.h>42 43#ifdef LACKS_OPEN_MEMSTREAM_PROTOTYPE44FILE *open_memstream(char **ptr, size_t *sizeloc);45#endif46 47#define SUPPORT_OLD_POWER_EVENTS 148#define PWR_EVENT_EXIT -149 50struct per_pid;51struct power_event;52struct wake_event;53 54struct timechart {55 struct perf_tool tool;56 struct per_pid *all_data;57 struct power_event *power_events;58 struct wake_event *wake_events;59 int proc_num;60 unsigned int numcpus;61 u64 min_freq, /* Lowest CPU frequency seen */62 max_freq, /* Highest CPU frequency seen */63 turbo_frequency,64 first_time, last_time;65 bool power_only,66 tasks_only,67 with_backtrace,68 topology;69 bool force;70 /* IO related settings */71 bool io_only,72 skip_eagain;73 u64 io_events;74 u64 min_time,75 merge_dist;76};77 78struct per_pidcomm;79struct cpu_sample;80struct io_sample;81 82/*83 * Datastructure layout:84 * We keep an list of "pid"s, matching the kernels notion of a task struct.85 * Each "pid" entry, has a list of "comm"s.86 * this is because we want to track different programs different, while87 * exec will reuse the original pid (by design).88 * Each comm has a list of samples that will be used to draw89 * final graph.90 */91 92struct per_pid {93 struct per_pid *next;94 95 int pid;96 int ppid;97 98 u64 start_time;99 u64 end_time;100 u64 total_time;101 u64 total_bytes;102 int display;103 104 struct per_pidcomm *all;105 struct per_pidcomm *current;106};107 108 109struct per_pidcomm {110 struct per_pidcomm *next;111 112 u64 start_time;113 u64 end_time;114 u64 total_time;115 u64 max_bytes;116 u64 total_bytes;117 118 int Y;119 int display;120 121 long state;122 u64 state_since;123 124 char *comm;125 126 struct cpu_sample *samples;127 struct io_sample *io_samples;128};129 130struct sample_wrapper {131 struct sample_wrapper *next;132 133 u64 timestamp;134 unsigned char data[];135};136 137#define TYPE_NONE 0138#define TYPE_RUNNING 1139#define TYPE_WAITING 2140#define TYPE_BLOCKED 3141 142struct cpu_sample {143 struct cpu_sample *next;144 145 u64 start_time;146 u64 end_time;147 int type;148 int cpu;149 const char *backtrace;150};151 152enum {153 IOTYPE_READ,154 IOTYPE_WRITE,155 IOTYPE_SYNC,156 IOTYPE_TX,157 IOTYPE_RX,158 IOTYPE_POLL,159};160 161struct io_sample {162 struct io_sample *next;163 164 u64 start_time;165 u64 end_time;166 u64 bytes;167 int type;168 int fd;169 int err;170 int merges;171};172 173#define CSTATE 1174#define PSTATE 2175 176struct power_event {177 struct power_event *next;178 int type;179 int state;180 u64 start_time;181 u64 end_time;182 int cpu;183};184 185struct wake_event {186 struct wake_event *next;187 int waker;188 int wakee;189 u64 time;190 const char *backtrace;191};192 193struct process_filter {194 char *name;195 int pid;196 struct process_filter *next;197};198 199static struct process_filter *process_filter;200 201 202static struct per_pid *find_create_pid(struct timechart *tchart, int pid)203{204 struct per_pid *cursor = tchart->all_data;205 206 while (cursor) {207 if (cursor->pid == pid)208 return cursor;209 cursor = cursor->next;210 }211 cursor = zalloc(sizeof(*cursor));212 assert(cursor != NULL);213 cursor->pid = pid;214 cursor->next = tchart->all_data;215 tchart->all_data = cursor;216 return cursor;217}218 219static struct per_pidcomm *create_pidcomm(struct per_pid *p)220{221 struct per_pidcomm *c;222 223 c = zalloc(sizeof(*c));224 if (!c)225 return NULL;226 p->current = c;227 c->next = p->all;228 p->all = c;229 return c;230}231 232static void pid_set_comm(struct timechart *tchart, int pid, char *comm)233{234 struct per_pid *p;235 struct per_pidcomm *c;236 p = find_create_pid(tchart, pid);237 c = p->all;238 while (c) {239 if (c->comm && strcmp(c->comm, comm) == 0) {240 p->current = c;241 return;242 }243 if (!c->comm) {244 c->comm = strdup(comm);245 p->current = c;246 return;247 }248 c = c->next;249 }250 c = create_pidcomm(p);251 assert(c != NULL);252 c->comm = strdup(comm);253}254 255static void pid_fork(struct timechart *tchart, int pid, int ppid, u64 timestamp)256{257 struct per_pid *p, *pp;258 p = find_create_pid(tchart, pid);259 pp = find_create_pid(tchart, ppid);260 p->ppid = ppid;261 if (pp->current && pp->current->comm && !p->current)262 pid_set_comm(tchart, pid, pp->current->comm);263 264 p->start_time = timestamp;265 if (p->current && !p->current->start_time) {266 p->current->start_time = timestamp;267 p->current->state_since = timestamp;268 }269}270 271static void pid_exit(struct timechart *tchart, int pid, u64 timestamp)272{273 struct per_pid *p;274 p = find_create_pid(tchart, pid);275 p->end_time = timestamp;276 if (p->current)277 p->current->end_time = timestamp;278}279 280static void pid_put_sample(struct timechart *tchart, int pid, int type,281 unsigned int cpu, u64 start, u64 end,282 const char *backtrace)283{284 struct per_pid *p;285 struct per_pidcomm *c;286 struct cpu_sample *sample;287 288 p = find_create_pid(tchart, pid);289 c = p->current;290 if (!c) {291 c = create_pidcomm(p);292 assert(c != NULL);293 }294 295 sample = zalloc(sizeof(*sample));296 assert(sample != NULL);297 sample->start_time = start;298 sample->end_time = end;299 sample->type = type;300 sample->next = c->samples;301 sample->cpu = cpu;302 sample->backtrace = backtrace;303 c->samples = sample;304 305 if (sample->type == TYPE_RUNNING && end > start && start > 0) {306 c->total_time += (end-start);307 p->total_time += (end-start);308 }309 310 if (c->start_time == 0 || c->start_time > start)311 c->start_time = start;312 if (p->start_time == 0 || p->start_time > start)313 p->start_time = start;314}315 316#define MAX_CPUS 4096317 318static u64 *cpus_cstate_start_times;319static int *cpus_cstate_state;320static u64 *cpus_pstate_start_times;321static u64 *cpus_pstate_state;322 323static int process_comm_event(const struct perf_tool *tool,324 union perf_event *event,325 struct perf_sample *sample __maybe_unused,326 struct machine *machine __maybe_unused)327{328 struct timechart *tchart = container_of(tool, struct timechart, tool);329 pid_set_comm(tchart, event->comm.tid, event->comm.comm);330 return 0;331}332 333static int process_fork_event(const struct perf_tool *tool,334 union perf_event *event,335 struct perf_sample *sample __maybe_unused,336 struct machine *machine __maybe_unused)337{338 struct timechart *tchart = container_of(tool, struct timechart, tool);339 pid_fork(tchart, event->fork.pid, event->fork.ppid, event->fork.time);340 return 0;341}342 343static int process_exit_event(const struct perf_tool *tool,344 union perf_event *event,345 struct perf_sample *sample __maybe_unused,346 struct machine *machine __maybe_unused)347{348 struct timechart *tchart = container_of(tool, struct timechart, tool);349 pid_exit(tchart, event->fork.pid, event->fork.time);350 return 0;351}352 353#ifdef SUPPORT_OLD_POWER_EVENTS354static int use_old_power_events;355#endif356 357static void c_state_start(int cpu, u64 timestamp, int state)358{359 cpus_cstate_start_times[cpu] = timestamp;360 cpus_cstate_state[cpu] = state;361}362 363static void c_state_end(struct timechart *tchart, int cpu, u64 timestamp)364{365 struct power_event *pwr = zalloc(sizeof(*pwr));366 367 if (!pwr)368 return;369 370 pwr->state = cpus_cstate_state[cpu];371 pwr->start_time = cpus_cstate_start_times[cpu];372 pwr->end_time = timestamp;373 pwr->cpu = cpu;374 pwr->type = CSTATE;375 pwr->next = tchart->power_events;376 377 tchart->power_events = pwr;378}379 380static struct power_event *p_state_end(struct timechart *tchart, int cpu,381 u64 timestamp)382{383 struct power_event *pwr = zalloc(sizeof(*pwr));384 385 if (!pwr)386 return NULL;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 = tchart->power_events;394 if (!pwr->start_time)395 pwr->start_time = tchart->first_time;396 397 tchart->power_events = pwr;398 return pwr;399}400 401static void p_state_change(struct timechart *tchart, int cpu, u64 timestamp, u64 new_freq)402{403 struct power_event *pwr;404 405 if (new_freq > 8000000) /* detect invalid data */406 return;407 408 pwr = p_state_end(tchart, cpu, timestamp);409 if (!pwr)410 return;411 412 cpus_pstate_state[cpu] = new_freq;413 cpus_pstate_start_times[cpu] = timestamp;414 415 if ((u64)new_freq > tchart->max_freq)416 tchart->max_freq = new_freq;417 418 if (new_freq < tchart->min_freq || tchart->min_freq == 0)419 tchart->min_freq = new_freq;420 421 if (new_freq == tchart->max_freq - 1000)422 tchart->turbo_frequency = tchart->max_freq;423}424 425static void sched_wakeup(struct timechart *tchart, int cpu, u64 timestamp,426 int waker, int wakee, u8 flags, const char *backtrace)427{428 struct per_pid *p;429 struct wake_event *we = zalloc(sizeof(*we));430 431 if (!we)432 return;433 434 we->time = timestamp;435 we->waker = waker;436 we->backtrace = backtrace;437 438 if ((flags & TRACE_FLAG_HARDIRQ) || (flags & TRACE_FLAG_SOFTIRQ))439 we->waker = -1;440 441 we->wakee = wakee;442 we->next = tchart->wake_events;443 tchart->wake_events = we;444 p = find_create_pid(tchart, we->wakee);445 446 if (p && p->current && p->current->state == TYPE_NONE) {447 p->current->state_since = timestamp;448 p->current->state = TYPE_WAITING;449 }450 if (p && p->current && p->current->state == TYPE_BLOCKED) {451 pid_put_sample(tchart, p->pid, p->current->state, cpu,452 p->current->state_since, timestamp, NULL);453 p->current->state_since = timestamp;454 p->current->state = TYPE_WAITING;455 }456}457 458static void sched_switch(struct timechart *tchart, int cpu, u64 timestamp,459 int prev_pid, int next_pid, u64 prev_state,460 const char *backtrace)461{462 struct per_pid *p = NULL, *prev_p;463 464 prev_p = find_create_pid(tchart, prev_pid);465 466 p = find_create_pid(tchart, next_pid);467 468 if (prev_p->current && prev_p->current->state != TYPE_NONE)469 pid_put_sample(tchart, prev_pid, TYPE_RUNNING, cpu,470 prev_p->current->state_since, timestamp,471 backtrace);472 if (p && p->current) {473 if (p->current->state != TYPE_NONE)474 pid_put_sample(tchart, next_pid, p->current->state, cpu,475 p->current->state_since, timestamp,476 backtrace);477 478 p->current->state_since = timestamp;479 p->current->state = TYPE_RUNNING;480 }481 482 if (prev_p->current) {483 prev_p->current->state = TYPE_NONE;484 prev_p->current->state_since = timestamp;485 if (prev_state & 2)486 prev_p->current->state = TYPE_BLOCKED;487 if (prev_state == 0)488 prev_p->current->state = TYPE_WAITING;489 }490}491 492static const char *cat_backtrace(union perf_event *event,493 struct perf_sample *sample,494 struct machine *machine)495{496 struct addr_location al;497 unsigned int i;498 char *p = NULL;499 size_t p_len;500 u8 cpumode = PERF_RECORD_MISC_USER;501 struct ip_callchain *chain = sample->callchain;502 FILE *f = open_memstream(&p, &p_len);503 504 if (!f) {505 perror("open_memstream error");506 return NULL;507 }508 509 addr_location__init(&al);510 if (!chain)511 goto exit;512 513 if (machine__resolve(machine, &al, sample) < 0) {514 fprintf(stderr, "problem processing %d event, skipping it.\n",515 event->header.type);516 goto exit;517 }518 519 for (i = 0; i < chain->nr; i++) {520 u64 ip;521 struct addr_location tal;522 523 if (callchain_param.order == ORDER_CALLEE)524 ip = chain->ips[i];525 else526 ip = chain->ips[chain->nr - i - 1];527 528 if (ip >= PERF_CONTEXT_MAX) {529 switch (ip) {530 case PERF_CONTEXT_HV:531 cpumode = PERF_RECORD_MISC_HYPERVISOR;532 break;533 case PERF_CONTEXT_KERNEL:534 cpumode = PERF_RECORD_MISC_KERNEL;535 break;536 case PERF_CONTEXT_USER:537 cpumode = PERF_RECORD_MISC_USER;538 break;539 default:540 pr_debug("invalid callchain context: "541 "%"PRId64"\n", (s64) ip);542 543 /*544 * It seems the callchain is corrupted.545 * Discard all.546 */547 zfree(&p);548 goto exit;549 }550 continue;551 }552 553 addr_location__init(&tal);554 tal.filtered = 0;555 if (thread__find_symbol(al.thread, cpumode, ip, &tal))556 fprintf(f, "..... %016" PRIx64 " %s\n", ip, tal.sym->name);557 else558 fprintf(f, "..... %016" PRIx64 "\n", ip);559 560 addr_location__exit(&tal);561 }562exit:563 addr_location__exit(&al);564 fclose(f);565 566 return p;567}568 569typedef int (*tracepoint_handler)(struct timechart *tchart,570 struct evsel *evsel,571 struct perf_sample *sample,572 const char *backtrace);573 574static int process_sample_event(const struct perf_tool *tool,575 union perf_event *event,576 struct perf_sample *sample,577 struct evsel *evsel,578 struct machine *machine)579{580 struct timechart *tchart = container_of(tool, struct timechart, tool);581 582 if (evsel->core.attr.sample_type & PERF_SAMPLE_TIME) {583 if (!tchart->first_time || tchart->first_time > sample->time)584 tchart->first_time = sample->time;585 if (tchart->last_time < sample->time)586 tchart->last_time = sample->time;587 }588 589 if (evsel->handler != NULL) {590 tracepoint_handler f = evsel->handler;591 return f(tchart, evsel, sample,592 cat_backtrace(event, sample, machine));593 }594 595 return 0;596}597 598static int599process_sample_cpu_idle(struct timechart *tchart __maybe_unused,600 struct evsel *evsel,601 struct perf_sample *sample,602 const char *backtrace __maybe_unused)603{604 u32 state = evsel__intval(evsel, sample, "state");605 u32 cpu_id = evsel__intval(evsel, sample, "cpu_id");606 607 if (state == (u32)PWR_EVENT_EXIT)608 c_state_end(tchart, cpu_id, sample->time);609 else610 c_state_start(cpu_id, sample->time, state);611 return 0;612}613 614static int615process_sample_cpu_frequency(struct timechart *tchart,616 struct evsel *evsel,617 struct perf_sample *sample,618 const char *backtrace __maybe_unused)619{620 u32 state = evsel__intval(evsel, sample, "state");621 u32 cpu_id = evsel__intval(evsel, sample, "cpu_id");622 623 p_state_change(tchart, cpu_id, sample->time, state);624 return 0;625}626 627static int628process_sample_sched_wakeup(struct timechart *tchart,629 struct evsel *evsel,630 struct perf_sample *sample,631 const char *backtrace)632{633 u8 flags = evsel__intval(evsel, sample, "common_flags");634 int waker = evsel__intval(evsel, sample, "common_pid");635 int wakee = evsel__intval(evsel, sample, "pid");636 637 sched_wakeup(tchart, sample->cpu, sample->time, waker, wakee, flags, backtrace);638 return 0;639}640 641static int642process_sample_sched_switch(struct timechart *tchart,643 struct evsel *evsel,644 struct perf_sample *sample,645 const char *backtrace)646{647 int prev_pid = evsel__intval(evsel, sample, "prev_pid");648 int next_pid = evsel__intval(evsel, sample, "next_pid");649 u64 prev_state = evsel__intval(evsel, sample, "prev_state");650 651 sched_switch(tchart, sample->cpu, sample->time, prev_pid, next_pid,652 prev_state, backtrace);653 return 0;654}655 656#ifdef SUPPORT_OLD_POWER_EVENTS657static int658process_sample_power_start(struct timechart *tchart __maybe_unused,659 struct evsel *evsel,660 struct perf_sample *sample,661 const char *backtrace __maybe_unused)662{663 u64 cpu_id = evsel__intval(evsel, sample, "cpu_id");664 u64 value = evsel__intval(evsel, sample, "value");665 666 c_state_start(cpu_id, sample->time, value);667 return 0;668}669 670static int671process_sample_power_end(struct timechart *tchart,672 struct evsel *evsel __maybe_unused,673 struct perf_sample *sample,674 const char *backtrace __maybe_unused)675{676 c_state_end(tchart, sample->cpu, sample->time);677 return 0;678}679 680static int681process_sample_power_frequency(struct timechart *tchart,682 struct evsel *evsel,683 struct perf_sample *sample,684 const char *backtrace __maybe_unused)685{686 u64 cpu_id = evsel__intval(evsel, sample, "cpu_id");687 u64 value = evsel__intval(evsel, sample, "value");688 689 p_state_change(tchart, cpu_id, sample->time, value);690 return 0;691}692#endif /* SUPPORT_OLD_POWER_EVENTS */693 694/*695 * After the last sample we need to wrap up the current C/P state696 * and close out each CPU for these.697 */698static void end_sample_processing(struct timechart *tchart)699{700 u64 cpu;701 struct power_event *pwr;702 703 for (cpu = 0; cpu <= tchart->numcpus; cpu++) {704 /* C state */705#if 0706 pwr = zalloc(sizeof(*pwr));707 if (!pwr)708 return;709 710 pwr->state = cpus_cstate_state[cpu];711 pwr->start_time = cpus_cstate_start_times[cpu];712 pwr->end_time = tchart->last_time;713 pwr->cpu = cpu;714 pwr->type = CSTATE;715 pwr->next = tchart->power_events;716 717 tchart->power_events = pwr;718#endif719 /* P state */720 721 pwr = p_state_end(tchart, cpu, tchart->last_time);722 if (!pwr)723 return;724 725 if (!pwr->state)726 pwr->state = tchart->min_freq;727 }728}729 730static int pid_begin_io_sample(struct timechart *tchart, int pid, int type,731 u64 start, int fd)732{733 struct per_pid *p = find_create_pid(tchart, pid);734 struct per_pidcomm *c = p->current;735 struct io_sample *sample;736 struct io_sample *prev;737 738 if (!c) {739 c = create_pidcomm(p);740 if (!c)741 return -ENOMEM;742 }743 744 prev = c->io_samples;745 746 if (prev && prev->start_time && !prev->end_time) {747 pr_warning("Skip invalid start event: "748 "previous event already started!\n");749 750 /* remove previous event that has been started,751 * we are not sure we will ever get an end for it */752 c->io_samples = prev->next;753 free(prev);754 return 0;755 }756 757 sample = zalloc(sizeof(*sample));758 if (!sample)759 return -ENOMEM;760 sample->start_time = start;761 sample->type = type;762 sample->fd = fd;763 sample->next = c->io_samples;764 c->io_samples = sample;765 766 if (c->start_time == 0 || c->start_time > start)767 c->start_time = start;768 769 return 0;770}771 772static int pid_end_io_sample(struct timechart *tchart, int pid, int type,773 u64 end, long ret)774{775 struct per_pid *p = find_create_pid(tchart, pid);776 struct per_pidcomm *c = p->current;777 struct io_sample *sample, *prev;778 779 if (!c) {780 pr_warning("Invalid pidcomm!\n");781 return -1;782 }783 784 sample = c->io_samples;785 786 if (!sample) /* skip partially captured events */787 return 0;788 789 if (sample->end_time) {790 pr_warning("Skip invalid end event: "791 "previous event already ended!\n");792 return 0;793 }794 795 if (sample->type != type) {796 pr_warning("Skip invalid end event: invalid event type!\n");797 return 0;798 }799 800 sample->end_time = end;801 prev = sample->next;802 803 /* we want to be able to see small and fast transfers, so make them804 * at least min_time long, but don't overlap them */805 if (sample->end_time - sample->start_time < tchart->min_time)806 sample->end_time = sample->start_time + tchart->min_time;807 if (prev && sample->start_time < prev->end_time) {808 if (prev->err) /* try to make errors more visible */809 sample->start_time = prev->end_time;810 else811 prev->end_time = sample->start_time;812 }813 814 if (ret < 0) {815 sample->err = ret;816 } else if (type == IOTYPE_READ || type == IOTYPE_WRITE ||817 type == IOTYPE_TX || type == IOTYPE_RX) {818 819 if ((u64)ret > c->max_bytes)820 c->max_bytes = ret;821 822 c->total_bytes += ret;823 p->total_bytes += ret;824 sample->bytes = ret;825 }826 827 /* merge two requests to make svg smaller and render-friendly */828 if (prev &&829 prev->type == sample->type &&830 prev->err == sample->err &&831 prev->fd == sample->fd &&832 prev->end_time + tchart->merge_dist >= sample->start_time) {833 834 sample->bytes += prev->bytes;835 sample->merges += prev->merges + 1;836 837 sample->start_time = prev->start_time;838 sample->next = prev->next;839 free(prev);840 841 if (!sample->err && sample->bytes > c->max_bytes)842 c->max_bytes = sample->bytes;843 }844 845 tchart->io_events++;846 847 return 0;848}849 850static int851process_enter_read(struct timechart *tchart,852 struct evsel *evsel,853 struct perf_sample *sample)854{855 long fd = evsel__intval(evsel, sample, "fd");856 return pid_begin_io_sample(tchart, sample->tid, IOTYPE_READ,857 sample->time, fd);858}859 860static int861process_exit_read(struct timechart *tchart,862 struct evsel *evsel,863 struct perf_sample *sample)864{865 long ret = evsel__intval(evsel, sample, "ret");866 return pid_end_io_sample(tchart, sample->tid, IOTYPE_READ,867 sample->time, ret);868}869 870static int871process_enter_write(struct timechart *tchart,872 struct evsel *evsel,873 struct perf_sample *sample)874{875 long fd = evsel__intval(evsel, sample, "fd");876 return pid_begin_io_sample(tchart, sample->tid, IOTYPE_WRITE,877 sample->time, fd);878}879 880static int881process_exit_write(struct timechart *tchart,882 struct evsel *evsel,883 struct perf_sample *sample)884{885 long ret = evsel__intval(evsel, sample, "ret");886 return pid_end_io_sample(tchart, sample->tid, IOTYPE_WRITE,887 sample->time, ret);888}889 890static int891process_enter_sync(struct timechart *tchart,892 struct evsel *evsel,893 struct perf_sample *sample)894{895 long fd = evsel__intval(evsel, sample, "fd");896 return pid_begin_io_sample(tchart, sample->tid, IOTYPE_SYNC,897 sample->time, fd);898}899 900static int901process_exit_sync(struct timechart *tchart,902 struct evsel *evsel,903 struct perf_sample *sample)904{905 long ret = evsel__intval(evsel, sample, "ret");906 return pid_end_io_sample(tchart, sample->tid, IOTYPE_SYNC,907 sample->time, ret);908}909 910static int911process_enter_tx(struct timechart *tchart,912 struct evsel *evsel,913 struct perf_sample *sample)914{915 long fd = evsel__intval(evsel, sample, "fd");916 return pid_begin_io_sample(tchart, sample->tid, IOTYPE_TX,917 sample->time, fd);918}919 920static int921process_exit_tx(struct timechart *tchart,922 struct evsel *evsel,923 struct perf_sample *sample)924{925 long ret = evsel__intval(evsel, sample, "ret");926 return pid_end_io_sample(tchart, sample->tid, IOTYPE_TX,927 sample->time, ret);928}929 930static int931process_enter_rx(struct timechart *tchart,932 struct evsel *evsel,933 struct perf_sample *sample)934{935 long fd = evsel__intval(evsel, sample, "fd");936 return pid_begin_io_sample(tchart, sample->tid, IOTYPE_RX,937 sample->time, fd);938}939 940static int941process_exit_rx(struct timechart *tchart,942 struct evsel *evsel,943 struct perf_sample *sample)944{945 long ret = evsel__intval(evsel, sample, "ret");946 return pid_end_io_sample(tchart, sample->tid, IOTYPE_RX,947 sample->time, ret);948}949 950static int951process_enter_poll(struct timechart *tchart,952 struct evsel *evsel,953 struct perf_sample *sample)954{955 long fd = evsel__intval(evsel, sample, "fd");956 return pid_begin_io_sample(tchart, sample->tid, IOTYPE_POLL,957 sample->time, fd);958}959 960static int961process_exit_poll(struct timechart *tchart,962 struct evsel *evsel,963 struct perf_sample *sample)964{965 long ret = evsel__intval(evsel, sample, "ret");966 return pid_end_io_sample(tchart, sample->tid, IOTYPE_POLL,967 sample->time, ret);968}969 970/*971 * Sort the pid datastructure972 */973static void sort_pids(struct timechart *tchart)974{975 struct per_pid *new_list, *p, *cursor, *prev;976 /* sort by ppid first, then by pid, lowest to highest */977 978 new_list = NULL;979 980 while (tchart->all_data) {981 p = tchart->all_data;982 tchart->all_data = p->next;983 p->next = NULL;984 985 if (new_list == NULL) {986 new_list = p;987 p->next = NULL;988 continue;989 }990 prev = NULL;991 cursor = new_list;992 while (cursor) {993 if (cursor->ppid > p->ppid ||994 (cursor->ppid == p->ppid && cursor->pid > p->pid)) {995 /* must insert before */996 if (prev) {997 p->next = prev->next;998 prev->next = p;999 cursor = NULL;1000 continue;1001 } else {1002 p->next = new_list;1003 new_list = p;1004 cursor = NULL;1005 continue;1006 }1007 }1008 1009 prev = cursor;1010 cursor = cursor->next;1011 if (!cursor)1012 prev->next = p;1013 }1014 }1015 tchart->all_data = new_list;1016}1017 1018 1019static void draw_c_p_states(struct timechart *tchart)1020{1021 struct power_event *pwr;1022 pwr = tchart->power_events;1023 1024 /*1025 * two pass drawing so that the P state bars are on top of the C state blocks1026 */1027 while (pwr) {1028 if (pwr->type == CSTATE)1029 svg_cstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);1030 pwr = pwr->next;1031 }1032 1033 pwr = tchart->power_events;1034 while (pwr) {1035 if (pwr->type == PSTATE) {1036 if (!pwr->state)1037 pwr->state = tchart->min_freq;1038 svg_pstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);1039 }1040 pwr = pwr->next;1041 }1042}1043 1044static void draw_wakeups(struct timechart *tchart)1045{1046 struct wake_event *we;1047 struct per_pid *p;1048 struct per_pidcomm *c;1049 1050 we = tchart->wake_events;1051 while (we) {1052 int from = 0, to = 0;1053 char *task_from = NULL, *task_to = NULL;1054 1055 /* locate the column of the waker and wakee */1056 p = tchart->all_data;1057 while (p) {1058 if (p->pid == we->waker || p->pid == we->wakee) {1059 c = p->all;1060 while (c) {1061 if (c->Y && c->start_time <= we->time && c->end_time >= we->time) {1062 if (p->pid == we->waker && !from) {1063 from = c->Y;1064 task_from = strdup(c->comm);1065 }1066 if (p->pid == we->wakee && !to) {1067 to = c->Y;1068 task_to = strdup(c->comm);1069 }1070 }1071 c = c->next;1072 }1073 c = p->all;1074 while (c) {1075 if (p->pid == we->waker && !from) {1076 from = c->Y;1077 task_from = strdup(c->comm);1078 }1079 if (p->pid == we->wakee && !to) {1080 to = c->Y;1081 task_to = strdup(c->comm);1082 }1083 c = c->next;1084 }1085 }1086 p = p->next;1087 }1088 1089 if (!task_from) {1090 task_from = malloc(40);1091 sprintf(task_from, "[%i]", we->waker);1092 }1093 if (!task_to) {1094 task_to = malloc(40);1095 sprintf(task_to, "[%i]", we->wakee);1096 }1097 1098 if (we->waker == -1)1099 svg_interrupt(we->time, to, we->backtrace);1100 else if (from && to && abs(from - to) == 1)1101 svg_wakeline(we->time, from, to, we->backtrace);1102 else1103 svg_partial_wakeline(we->time, from, task_from, to,1104 task_to, we->backtrace);1105 we = we->next;1106 1107 free(task_from);1108 free(task_to);1109 }1110}1111 1112static void draw_cpu_usage(struct timechart *tchart)1113{1114 struct per_pid *p;1115 struct per_pidcomm *c;1116 struct cpu_sample *sample;1117 p = tchart->all_data;1118 while (p) {1119 c = p->all;1120 while (c) {1121 sample = c->samples;1122 while (sample) {1123 if (sample->type == TYPE_RUNNING) {1124 svg_process(sample->cpu,1125 sample->start_time,1126 sample->end_time,1127 p->pid,1128 c->comm,1129 sample->backtrace);1130 }1131 1132 sample = sample->next;1133 }1134 c = c->next;1135 }1136 p = p->next;1137 }1138}1139 1140static void draw_io_bars(struct timechart *tchart)1141{1142 const char *suf;1143 double bytes;1144 char comm[256];1145 struct per_pid *p;1146 struct per_pidcomm *c;1147 struct io_sample *sample;1148 int Y = 1;1149 1150 p = tchart->all_data;1151 while (p) {1152 c = p->all;1153 while (c) {1154 if (!c->display) {1155 c->Y = 0;1156 c = c->next;1157 continue;1158 }1159 1160 svg_box(Y, c->start_time, c->end_time, "process3");1161 sample = c->io_samples;1162 for (sample = c->io_samples; sample; sample = sample->next) {1163 double h = (double)sample->bytes / c->max_bytes;1164 1165 if (tchart->skip_eagain &&1166 sample->err == -EAGAIN)1167 continue;1168 1169 if (sample->err)1170 h = 1;1171 1172 if (sample->type == IOTYPE_SYNC)1173 svg_fbox(Y,1174 sample->start_time,1175 sample->end_time,1176 1,1177 sample->err ? "error" : "sync",1178 sample->fd,1179 sample->err,1180 sample->merges);1181 else if (sample->type == IOTYPE_POLL)1182 svg_fbox(Y,1183 sample->start_time,1184 sample->end_time,1185 1,1186 sample->err ? "error" : "poll",1187 sample->fd,1188 sample->err,1189 sample->merges);1190 else if (sample->type == IOTYPE_READ)1191 svg_ubox(Y,1192 sample->start_time,1193 sample->end_time,1194 h,1195 sample->err ? "error" : "disk",1196 sample->fd,1197 sample->err,1198 sample->merges);1199 else if (sample->type == IOTYPE_WRITE)1200 svg_lbox(Y,1201 sample->start_time,1202 sample->end_time,1203 h,1204 sample->err ? "error" : "disk",1205 sample->fd,1206 sample->err,1207 sample->merges);1208 else if (sample->type == IOTYPE_RX)1209 svg_ubox(Y,1210 sample->start_time,1211 sample->end_time,1212 h,1213 sample->err ? "error" : "net",1214 sample->fd,1215 sample->err,1216 sample->merges);1217 else if (sample->type == IOTYPE_TX)1218 svg_lbox(Y,1219 sample->start_time,1220 sample->end_time,1221 h,1222 sample->err ? "error" : "net",1223 sample->fd,1224 sample->err,1225 sample->merges);1226 }1227 1228 suf = "";1229 bytes = c->total_bytes;1230 if (bytes > 1024) {1231 bytes = bytes / 1024;1232 suf = "K";1233 }1234 if (bytes > 1024) {1235 bytes = bytes / 1024;1236 suf = "M";1237 }1238 if (bytes > 1024) {1239 bytes = bytes / 1024;1240 suf = "G";1241 }1242 1243 1244 sprintf(comm, "%s:%i (%3.1f %sbytes)", c->comm ?: "", p->pid, bytes, suf);1245 svg_text(Y, c->start_time, comm);1246 1247 c->Y = Y;1248 Y++;1249 c = c->next;1250 }1251 p = p->next;1252 }1253}1254 1255static void draw_process_bars(struct timechart *tchart)1256{1257 struct per_pid *p;1258 struct per_pidcomm *c;1259 struct cpu_sample *sample;1260 int Y = 0;1261 1262 Y = 2 * tchart->numcpus + 2;1263 1264 p = tchart->all_data;1265 while (p) {1266 c = p->all;1267 while (c) {1268 if (!c->display) {1269 c->Y = 0;1270 c = c->next;1271 continue;1272 }1273 1274 svg_box(Y, c->start_time, c->end_time, "process");1275 sample = c->samples;1276 while (sample) {1277 if (sample->type == TYPE_RUNNING)1278 svg_running(Y, sample->cpu,1279 sample->start_time,1280 sample->end_time,1281 sample->backtrace);1282 if (sample->type == TYPE_BLOCKED)1283 svg_blocked(Y, sample->cpu,1284 sample->start_time,1285 sample->end_time,1286 sample->backtrace);1287 if (sample->type == TYPE_WAITING)1288 svg_waiting(Y, sample->cpu,1289 sample->start_time,1290 sample->end_time,1291 sample->backtrace);1292 sample = sample->next;1293 }1294 1295 if (c->comm) {1296 char comm[256];1297 if (c->total_time > 5000000000) /* 5 seconds */1298 sprintf(comm, "%s:%i (%2.2fs)", c->comm, p->pid, c->total_time / (double)NSEC_PER_SEC);1299 else1300 sprintf(comm, "%s:%i (%3.1fms)", c->comm, p->pid, c->total_time / (double)NSEC_PER_MSEC);1301 1302 svg_text(Y, c->start_time, comm);1303 }1304 c->Y = Y;1305 Y++;1306 c = c->next;1307 }1308 p = p->next;1309 }1310}1311 1312static void add_process_filter(const char *string)1313{1314 int pid = strtoull(string, NULL, 10);1315 struct process_filter *filt = malloc(sizeof(*filt));1316 1317 if (!filt)1318 return;1319 1320 filt->name = strdup(string);1321 filt->pid = pid;1322 filt->next = process_filter;1323 1324 process_filter = filt;1325}1326 1327static int passes_filter(struct per_pid *p, struct per_pidcomm *c)1328{1329 struct process_filter *filt;1330 if (!process_filter)1331 return 1;1332 1333 filt = process_filter;1334 while (filt) {1335 if (filt->pid && p->pid == filt->pid)1336 return 1;1337 if (strcmp(filt->name, c->comm) == 0)1338 return 1;1339 filt = filt->next;1340 }1341 return 0;1342}1343 1344static int determine_display_tasks_filtered(struct timechart *tchart)1345{1346 struct per_pid *p;1347 struct per_pidcomm *c;1348 int count = 0;1349 1350 p = tchart->all_data;1351 while (p) {1352 p->display = 0;1353 if (p->start_time == 1)1354 p->start_time = tchart->first_time;1355 1356 /* no exit marker, task kept running to the end */1357 if (p->end_time == 0)1358 p->end_time = tchart->last_time;1359 1360 c = p->all;1361 1362 while (c) {1363 c->display = 0;1364 1365 if (c->start_time == 1)1366 c->start_time = tchart->first_time;1367 1368 if (passes_filter(p, c)) {1369 c->display = 1;1370 p->display = 1;1371 count++;1372 }1373 1374 if (c->end_time == 0)1375 c->end_time = tchart->last_time;1376 1377 c = c->next;1378 }1379 p = p->next;1380 }1381 return count;1382}1383 1384static int determine_display_tasks(struct timechart *tchart, u64 threshold)1385{1386 struct per_pid *p;1387 struct per_pidcomm *c;1388 int count = 0;1389 1390 p = tchart->all_data;1391 while (p) {1392 p->display = 0;1393 if (p->start_time == 1)1394 p->start_time = tchart->first_time;1395 1396 /* no exit marker, task kept running to the end */1397 if (p->end_time == 0)1398 p->end_time = tchart->last_time;1399 if (p->total_time >= threshold)1400 p->display = 1;1401 1402 c = p->all;1403 1404 while (c) {1405 c->display = 0;1406 1407 if (c->start_time == 1)1408 c->start_time = tchart->first_time;1409 1410 if (c->total_time >= threshold) {1411 c->display = 1;1412 count++;1413 }1414 1415 if (c->end_time == 0)1416 c->end_time = tchart->last_time;1417 1418 c = c->next;1419 }1420 p = p->next;1421 }1422 return count;1423}1424 1425static int determine_display_io_tasks(struct timechart *timechart, u64 threshold)1426{1427 struct per_pid *p;1428 struct per_pidcomm *c;1429 int count = 0;1430 1431 p = timechart->all_data;1432 while (p) {1433 /* no exit marker, task kept running to the end */1434 if (p->end_time == 0)1435 p->end_time = timechart->last_time;1436 1437 c = p->all;1438 1439 while (c) {1440 c->display = 0;1441 1442 if (c->total_bytes >= threshold) {1443 c->display = 1;1444 count++;1445 }1446 1447 if (c->end_time == 0)1448 c->end_time = timechart->last_time;1449 1450 c = c->next;1451 }1452 p = p->next;1453 }1454 return count;1455}1456 1457#define BYTES_THRESH (1 * 1024 * 1024)1458#define TIME_THRESH 100000001459 1460static void write_svg_file(struct timechart *tchart, const char *filename)1461{1462 u64 i;1463 int count;1464 int thresh = tchart->io_events ? BYTES_THRESH : TIME_THRESH;1465 1466 if (tchart->power_only)1467 tchart->proc_num = 0;1468 1469 /* We'd like to show at least proc_num tasks;1470 * be less picky if we have fewer */1471 do {1472 if (process_filter)1473 count = determine_display_tasks_filtered(tchart);1474 else if (tchart->io_events)1475 count = determine_display_io_tasks(tchart, thresh);1476 else1477 count = determine_display_tasks(tchart, thresh);1478 thresh /= 10;1479 } while (!process_filter && thresh && count < tchart->proc_num);1480 1481 if (!tchart->proc_num)1482 count = 0;1483 1484 if (tchart->io_events) {1485 open_svg(filename, 0, count, tchart->first_time, tchart->last_time);1486 1487 svg_time_grid(0.5);1488 svg_io_legenda();1489 1490 draw_io_bars(tchart);1491 } else {1492 open_svg(filename, tchart->numcpus, count, tchart->first_time, tchart->last_time);1493 1494 svg_time_grid(0);1495 1496 svg_legenda();1497 1498 for (i = 0; i < tchart->numcpus; i++)1499 svg_cpu_box(i, tchart->max_freq, tchart->turbo_frequency);1500 1501 draw_cpu_usage(tchart);1502 if (tchart->proc_num)1503 draw_process_bars(tchart);1504 if (!tchart->tasks_only)1505 draw_c_p_states(tchart);1506 if (tchart->proc_num)1507 draw_wakeups(tchart);1508 }1509 1510 svg_close();1511}1512 1513static int process_header(struct perf_file_section *section __maybe_unused,1514 struct perf_header *ph,1515 int feat,1516 int fd __maybe_unused,1517 void *data)1518{1519 struct timechart *tchart = data;1520 1521 switch (feat) {1522 case HEADER_NRCPUS:1523 tchart->numcpus = ph->env.nr_cpus_avail;1524 break;1525 1526 case HEADER_CPU_TOPOLOGY:1527 if (!tchart->topology)1528 break;1529 1530 if (svg_build_topology_map(&ph->env))1531 fprintf(stderr, "problem building topology\n");1532 break;1533 1534 default:1535 break;1536 }1537 1538 return 0;1539}1540 1541static int __cmd_timechart(struct timechart *tchart, const char *output_name)1542{1543 const struct evsel_str_handler power_tracepoints[] = {1544 { "power:cpu_idle", process_sample_cpu_idle },1545 { "power:cpu_frequency", process_sample_cpu_frequency },1546 { "sched:sched_wakeup", process_sample_sched_wakeup },1547 { "sched:sched_switch", process_sample_sched_switch },1548#ifdef SUPPORT_OLD_POWER_EVENTS1549 { "power:power_start", process_sample_power_start },1550 { "power:power_end", process_sample_power_end },1551 { "power:power_frequency", process_sample_power_frequency },1552#endif1553 1554 { "syscalls:sys_enter_read", process_enter_read },1555 { "syscalls:sys_enter_pread64", process_enter_read },1556 { "syscalls:sys_enter_readv", process_enter_read },1557 { "syscalls:sys_enter_preadv", process_enter_read },1558 { "syscalls:sys_enter_write", process_enter_write },1559 { "syscalls:sys_enter_pwrite64", process_enter_write },1560 { "syscalls:sys_enter_writev", process_enter_write },1561 { "syscalls:sys_enter_pwritev", process_enter_write },1562 { "syscalls:sys_enter_sync", process_enter_sync },1563 { "syscalls:sys_enter_sync_file_range", process_enter_sync },1564 { "syscalls:sys_enter_fsync", process_enter_sync },1565 { "syscalls:sys_enter_msync", process_enter_sync },1566 { "syscalls:sys_enter_recvfrom", process_enter_rx },1567 { "syscalls:sys_enter_recvmmsg", process_enter_rx },1568 { "syscalls:sys_enter_recvmsg", process_enter_rx },1569 { "syscalls:sys_enter_sendto", process_enter_tx },1570 { "syscalls:sys_enter_sendmsg", process_enter_tx },1571 { "syscalls:sys_enter_sendmmsg", process_enter_tx },1572 { "syscalls:sys_enter_epoll_pwait", process_enter_poll },1573 { "syscalls:sys_enter_epoll_wait", process_enter_poll },1574 { "syscalls:sys_enter_poll", process_enter_poll },1575 { "syscalls:sys_enter_ppoll", process_enter_poll },1576 { "syscalls:sys_enter_pselect6", process_enter_poll },1577 { "syscalls:sys_enter_select", process_enter_poll },1578 1579 { "syscalls:sys_exit_read", process_exit_read },1580 { "syscalls:sys_exit_pread64", process_exit_read },1581 { "syscalls:sys_exit_readv", process_exit_read },1582 { "syscalls:sys_exit_preadv", process_exit_read },1583 { "syscalls:sys_exit_write", process_exit_write },1584 { "syscalls:sys_exit_pwrite64", process_exit_write },1585 { "syscalls:sys_exit_writev", process_exit_write },1586 { "syscalls:sys_exit_pwritev", process_exit_write },1587 { "syscalls:sys_exit_sync", process_exit_sync },1588 { "syscalls:sys_exit_sync_file_range", process_exit_sync },1589 { "syscalls:sys_exit_fsync", process_exit_sync },1590 { "syscalls:sys_exit_msync", process_exit_sync },1591 { "syscalls:sys_exit_recvfrom", process_exit_rx },1592 { "syscalls:sys_exit_recvmmsg", process_exit_rx },1593 { "syscalls:sys_exit_recvmsg", process_exit_rx },1594 { "syscalls:sys_exit_sendto", process_exit_tx },1595 { "syscalls:sys_exit_sendmsg", process_exit_tx },1596 { "syscalls:sys_exit_sendmmsg", process_exit_tx },1597 { "syscalls:sys_exit_epoll_pwait", process_exit_poll },1598 { "syscalls:sys_exit_epoll_wait", process_exit_poll },1599 { "syscalls:sys_exit_poll", process_exit_poll },1600 { "syscalls:sys_exit_ppoll", process_exit_poll },1601 { "syscalls:sys_exit_pselect6", process_exit_poll },1602 { "syscalls:sys_exit_select", process_exit_poll },1603 };1604 struct perf_data data = {1605 .path = input_name,1606 .mode = PERF_DATA_MODE_READ,1607 .force = tchart->force,1608 };1609 struct perf_session *session;1610 int ret = -EINVAL;1611 1612 perf_tool__init(&tchart->tool, /*ordered_events=*/true);1613 tchart->tool.comm = process_comm_event;1614 tchart->tool.fork = process_fork_event;1615 tchart->tool.exit = process_exit_event;1616 tchart->tool.sample = process_sample_event;1617 1618 session = perf_session__new(&data, &tchart->tool);1619 if (IS_ERR(session))1620 return PTR_ERR(session);1621 1622 symbol__init(&session->header.env);1623 1624 (void)perf_header__process_sections(&session->header,1625 perf_data__fd(session->data),1626 tchart,1627 process_header);1628 1629 if (!perf_session__has_traces(session, "timechart record"))1630 goto out_delete;1631 1632 if (perf_session__set_tracepoints_handlers(session,1633 power_tracepoints)) {1634 pr_err("Initializing session tracepoint handlers failed\n");1635 goto out_delete;1636 }1637 1638 ret = perf_session__process_events(session);1639 if (ret)1640 goto out_delete;1641 1642 end_sample_processing(tchart);1643 1644 sort_pids(tchart);1645 1646 write_svg_file(tchart, output_name);1647 1648 pr_info("Written %2.1f seconds of trace to %s.\n",1649 (tchart->last_time - tchart->first_time) / (double)NSEC_PER_SEC, output_name);1650out_delete:1651 perf_session__delete(session);1652 return ret;1653}1654 1655static int timechart__io_record(int argc, const char **argv)1656{1657 unsigned int rec_argc, i;1658 const char **rec_argv;1659 const char **p;1660 char *filter = NULL;1661 1662 const char * const common_args[] = {1663 "record", "-a", "-R", "-c", "1",1664 };1665 unsigned int common_args_nr = ARRAY_SIZE(common_args);1666 1667 const char * const disk_events[] = {1668 "syscalls:sys_enter_read",1669 "syscalls:sys_enter_pread64",1670 "syscalls:sys_enter_readv",1671 "syscalls:sys_enter_preadv",1672 "syscalls:sys_enter_write",1673 "syscalls:sys_enter_pwrite64",1674 "syscalls:sys_enter_writev",1675 "syscalls:sys_enter_pwritev",1676 "syscalls:sys_enter_sync",1677 "syscalls:sys_enter_sync_file_range",1678 "syscalls:sys_enter_fsync",1679 "syscalls:sys_enter_msync",1680 1681 "syscalls:sys_exit_read",1682 "syscalls:sys_exit_pread64",1683 "syscalls:sys_exit_readv",1684 "syscalls:sys_exit_preadv",1685 "syscalls:sys_exit_write",1686 "syscalls:sys_exit_pwrite64",1687 "syscalls:sys_exit_writev",1688 "syscalls:sys_exit_pwritev",1689 "syscalls:sys_exit_sync",1690 "syscalls:sys_exit_sync_file_range",1691 "syscalls:sys_exit_fsync",1692 "syscalls:sys_exit_msync",1693 };1694 unsigned int disk_events_nr = ARRAY_SIZE(disk_events);1695 1696 const char * const net_events[] = {1697 "syscalls:sys_enter_recvfrom",1698 "syscalls:sys_enter_recvmmsg",1699 "syscalls:sys_enter_recvmsg",1700 "syscalls:sys_enter_sendto",1701 "syscalls:sys_enter_sendmsg",1702 "syscalls:sys_enter_sendmmsg",1703 1704 "syscalls:sys_exit_recvfrom",1705 "syscalls:sys_exit_recvmmsg",1706 "syscalls:sys_exit_recvmsg",1707 "syscalls:sys_exit_sendto",1708 "syscalls:sys_exit_sendmsg",1709 "syscalls:sys_exit_sendmmsg",1710 };1711 unsigned int net_events_nr = ARRAY_SIZE(net_events);1712 1713 const char * const poll_events[] = {1714 "syscalls:sys_enter_epoll_pwait",1715 "syscalls:sys_enter_epoll_wait",1716 "syscalls:sys_enter_poll",1717 "syscalls:sys_enter_ppoll",1718 "syscalls:sys_enter_pselect6",1719 "syscalls:sys_enter_select",1720 1721 "syscalls:sys_exit_epoll_pwait",1722 "syscalls:sys_exit_epoll_wait",1723 "syscalls:sys_exit_poll",1724 "syscalls:sys_exit_ppoll",1725 "syscalls:sys_exit_pselect6",1726 "syscalls:sys_exit_select",1727 };1728 unsigned int poll_events_nr = ARRAY_SIZE(poll_events);1729 1730 rec_argc = common_args_nr +1731 disk_events_nr * 4 +1732 net_events_nr * 4 +1733 poll_events_nr * 4 +1734 argc;1735 rec_argv = calloc(rec_argc + 1, sizeof(char *));1736 1737 if (rec_argv == NULL)1738 return -ENOMEM;1739 1740 if (asprintf(&filter, "common_pid != %d", getpid()) < 0) {1741 free(rec_argv);1742 return -ENOMEM;1743 }1744 1745 p = rec_argv;1746 for (i = 0; i < common_args_nr; i++)1747 *p++ = strdup(common_args[i]);1748 1749 for (i = 0; i < disk_events_nr; i++) {1750 if (!is_valid_tracepoint(disk_events[i])) {1751 rec_argc -= 4;1752 continue;1753 }1754 1755 *p++ = "-e";1756 *p++ = strdup(disk_events[i]);1757 *p++ = "--filter";1758 *p++ = filter;1759 }1760 for (i = 0; i < net_events_nr; i++) {1761 if (!is_valid_tracepoint(net_events[i])) {1762 rec_argc -= 4;1763 continue;1764 }1765 1766 *p++ = "-e";1767 *p++ = strdup(net_events[i]);1768 *p++ = "--filter";1769 *p++ = filter;1770 }1771 for (i = 0; i < poll_events_nr; i++) {1772 if (!is_valid_tracepoint(poll_events[i])) {1773 rec_argc -= 4;1774 continue;1775 }1776 1777 *p++ = "-e";1778 *p++ = strdup(poll_events[i]);1779 *p++ = "--filter";1780 *p++ = filter;1781 }1782 1783 for (i = 0; i < (unsigned int)argc; i++)1784 *p++ = argv[i];1785 1786 return cmd_record(rec_argc, rec_argv);1787}1788 1789 1790static int timechart__record(struct timechart *tchart, int argc, const char **argv)1791{1792 unsigned int rec_argc, i, j;1793 const char **rec_argv;1794 const char **p;1795 unsigned int record_elems;1796 1797 const char * const common_args[] = {1798 "record", "-a", "-R", "-c", "1",1799 };1800 unsigned int common_args_nr = ARRAY_SIZE(common_args);1801 1802 const char * const backtrace_args[] = {1803 "-g",1804 };1805 unsigned int backtrace_args_no = ARRAY_SIZE(backtrace_args);1806 1807 const char * const power_args[] = {1808 "-e", "power:cpu_frequency",1809 "-e", "power:cpu_idle",1810 };1811 unsigned int power_args_nr = ARRAY_SIZE(power_args);1812 1813 const char * const old_power_args[] = {1814#ifdef SUPPORT_OLD_POWER_EVENTS1815 "-e", "power:power_start",1816 "-e", "power:power_end",1817 "-e", "power:power_frequency",1818#endif1819 };1820 unsigned int old_power_args_nr = ARRAY_SIZE(old_power_args);1821 1822 const char * const tasks_args[] = {1823 "-e", "sched:sched_wakeup",1824 "-e", "sched:sched_switch",1825 };1826 unsigned int tasks_args_nr = ARRAY_SIZE(tasks_args);1827 1828#ifdef SUPPORT_OLD_POWER_EVENTS1829 if (!is_valid_tracepoint("power:cpu_idle") &&1830 is_valid_tracepoint("power:power_start")) {1831 use_old_power_events = 1;1832 power_args_nr = 0;1833 } else {1834 old_power_args_nr = 0;1835 }1836#endif1837 1838 if (tchart->power_only)1839 tasks_args_nr = 0;1840 1841 if (tchart->tasks_only) {1842 power_args_nr = 0;1843 old_power_args_nr = 0;1844 }1845 1846 if (!tchart->with_backtrace)1847 backtrace_args_no = 0;1848 1849 record_elems = common_args_nr + tasks_args_nr +1850 power_args_nr + old_power_args_nr + backtrace_args_no;1851 1852 rec_argc = record_elems + argc;1853 rec_argv = calloc(rec_argc + 1, sizeof(char *));1854 1855 if (rec_argv == NULL)1856 return -ENOMEM;1857 1858 p = rec_argv;1859 for (i = 0; i < common_args_nr; i++)1860 *p++ = strdup(common_args[i]);1861 1862 for (i = 0; i < backtrace_args_no; i++)1863 *p++ = strdup(backtrace_args[i]);1864 1865 for (i = 0; i < tasks_args_nr; i++)1866 *p++ = strdup(tasks_args[i]);1867 1868 for (i = 0; i < power_args_nr; i++)1869 *p++ = strdup(power_args[i]);1870 1871 for (i = 0; i < old_power_args_nr; i++)1872 *p++ = strdup(old_power_args[i]);1873 1874 for (j = 0; j < (unsigned int)argc; j++)1875 *p++ = argv[j];1876 1877 return cmd_record(rec_argc, rec_argv);1878}1879 1880static int1881parse_process(const struct option *opt __maybe_unused, const char *arg,1882 int __maybe_unused unset)1883{1884 if (arg)1885 add_process_filter(arg);1886 return 0;1887}1888 1889static int1890parse_highlight(const struct option *opt __maybe_unused, const char *arg,1891 int __maybe_unused unset)1892{1893 unsigned long duration = strtoul(arg, NULL, 0);1894 1895 if (svg_highlight || svg_highlight_name)1896 return -1;1897 1898 if (duration)1899 svg_highlight = duration;1900 else1901 svg_highlight_name = strdup(arg);1902 1903 return 0;1904}1905 1906static int1907parse_time(const struct option *opt, const char *arg, int __maybe_unused unset)1908{1909 char unit = 'n';1910 u64 *value = opt->value;1911 1912 if (sscanf(arg, "%" PRIu64 "%cs", value, &unit) > 0) {1913 switch (unit) {1914 case 'm':1915 *value *= NSEC_PER_MSEC;1916 break;1917 case 'u':1918 *value *= NSEC_PER_USEC;1919 break;1920 case 'n':1921 break;1922 default:1923 return -1;1924 }1925 }1926 1927 return 0;1928}1929 1930int cmd_timechart(int argc, const char **argv)1931{1932 struct timechart tchart = {1933 .proc_num = 15,1934 .min_time = NSEC_PER_MSEC,1935 .merge_dist = 1000,1936 };1937 const char *output_name = "output.svg";1938 const struct option timechart_common_options[] = {1939 OPT_BOOLEAN('P', "power-only", &tchart.power_only, "output power data only"),1940 OPT_BOOLEAN('T', "tasks-only", &tchart.tasks_only, "output processes data only"),1941 OPT_END()1942 };1943 const struct option timechart_options[] = {1944 OPT_STRING('i', "input", &input_name, "file", "input file name"),1945 OPT_STRING('o', "output", &output_name, "file", "output file name"),1946 OPT_INTEGER('w', "width", &svg_page_width, "page width"),1947 OPT_CALLBACK(0, "highlight", NULL, "duration or task name",1948 "highlight tasks. Pass duration in ns or process name.",1949 parse_highlight),1950 OPT_CALLBACK('p', "process", NULL, "process",1951 "process selector. Pass a pid or process name.",1952 parse_process),1953 OPT_CALLBACK(0, "symfs", NULL, "directory",1954 "Look for files with symbols relative to this directory",1955 symbol__config_symfs),1956 OPT_INTEGER('n', "proc-num", &tchart.proc_num,1957 "min. number of tasks to print"),1958 OPT_BOOLEAN('t', "topology", &tchart.topology,1959 "sort CPUs according to topology"),1960 OPT_BOOLEAN(0, "io-skip-eagain", &tchart.skip_eagain,1961 "skip EAGAIN errors"),1962 OPT_CALLBACK(0, "io-min-time", &tchart.min_time, "time",1963 "all IO faster than min-time will visually appear longer",1964 parse_time),1965 OPT_CALLBACK(0, "io-merge-dist", &tchart.merge_dist, "time",1966 "merge events that are merge-dist us apart",1967 parse_time),1968 OPT_BOOLEAN('f', "force", &tchart.force, "don't complain, do it"),1969 OPT_PARENT(timechart_common_options),1970 };1971 const char * const timechart_subcommands[] = { "record", NULL };1972 const char *timechart_usage[] = {1973 "perf timechart [<options>] {record}",1974 NULL1975 };1976 const struct option timechart_record_options[] = {1977 OPT_BOOLEAN('I', "io-only", &tchart.io_only,1978 "record only IO data"),1979 OPT_BOOLEAN('g', "callchain", &tchart.with_backtrace, "record callchain"),1980 OPT_PARENT(timechart_common_options),1981 };1982 const char * const timechart_record_usage[] = {1983 "perf timechart record [<options>]",1984 NULL1985 };1986 int ret;1987 1988 cpus_cstate_start_times = calloc(MAX_CPUS, sizeof(*cpus_cstate_start_times));1989 if (!cpus_cstate_start_times)1990 return -ENOMEM;1991 cpus_cstate_state = calloc(MAX_CPUS, sizeof(*cpus_cstate_state));1992 if (!cpus_cstate_state) {1993 ret = -ENOMEM;1994 goto out;1995 }1996 cpus_pstate_start_times = calloc(MAX_CPUS, sizeof(*cpus_pstate_start_times));1997 if (!cpus_pstate_start_times) {1998 ret = -ENOMEM;1999 goto out;2000 }2001 cpus_pstate_state = calloc(MAX_CPUS, sizeof(*cpus_pstate_state));2002 if (!cpus_pstate_state) {2003 ret = -ENOMEM;2004 goto out;2005 }2006 2007 argc = parse_options_subcommand(argc, argv, timechart_options, timechart_subcommands,2008 timechart_usage, PARSE_OPT_STOP_AT_NON_OPTION);2009 2010 if (tchart.power_only && tchart.tasks_only) {2011 pr_err("-P and -T options cannot be used at the same time.\n");2012 ret = -1;2013 goto out;2014 }2015 2016 if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) {2017 argc = parse_options(argc, argv, timechart_record_options,2018 timechart_record_usage,2019 PARSE_OPT_STOP_AT_NON_OPTION);2020 2021 if (tchart.power_only && tchart.tasks_only) {2022 pr_err("-P and -T options cannot be used at the same time.\n");2023 ret = -1;2024 goto out;2025 }2026 2027 if (tchart.io_only)2028 ret = timechart__io_record(argc, argv);2029 else2030 ret = timechart__record(&tchart, argc, argv);2031 goto out;2032 } else if (argc)2033 usage_with_options(timechart_usage, timechart_options);2034 2035 setup_pager();2036 2037 ret = __cmd_timechart(&tchart, output_name);2038out:2039 zfree(&cpus_cstate_start_times);2040 zfree(&cpus_cstate_state);2041 zfree(&cpus_pstate_start_times);2042 zfree(&cpus_pstate_state);2043 return ret;2044}2045