2 * builtin-timechart.c - make an svg timechart of system activity
4 * (C) Copyright 2009 Intel Corporation
7 * Arjan van de Ven <arjan@linux.intel.com>
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
17 #include "util/util.h"
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/callchain.h"
25 #include "util/strlist.h"
28 #include "util/header.h"
29 #include "util/parse-options.h"
30 #include "util/parse-events.h"
31 #include "util/event.h"
32 #include "util/session.h"
33 #include "util/svghelper.h"
35 #define SUPPORT_OLD_POWER_EVENTS 1
36 #define PWR_EVENT_EXIT -1
39 static char const *input_name = "perf.data";
40 static char const *output_name = "output.svg";
42 static unsigned int numcpus;
43 static u64 min_freq; /* Lowest CPU frequency seen */
44 static u64 max_freq; /* Highest CPU frequency seen */
45 static u64 turbo_frequency;
47 static u64 first_time, last_time;
49 static bool power_only;
59 struct sample_wrapper;
62 * Datastructure layout:
63 * We keep an list of "pid"s, matching the kernels notion of a task struct.
64 * Each "pid" entry, has a list of "comm"s.
65 * this is because we want to track different programs different, while
66 * exec will reuse the original pid (by design).
67 * Each comm has a list of samples that will be used to draw
82 struct per_pidcomm *all;
83 struct per_pidcomm *current;
88 struct per_pidcomm *next;
102 struct cpu_sample *samples;
105 struct sample_wrapper {
106 struct sample_wrapper *next;
109 unsigned char data[0];
113 #define TYPE_RUNNING 1
114 #define TYPE_WAITING 2
115 #define TYPE_BLOCKED 3
118 struct cpu_sample *next;
126 static struct per_pid *all_data;
132 struct power_event *next;
141 struct wake_event *next;
147 static struct power_event *power_events;
148 static struct wake_event *wake_events;
150 struct process_filter;
151 struct process_filter {
154 struct process_filter *next;
157 static struct process_filter *process_filter;
160 static struct per_pid *find_create_pid(int pid)
162 struct per_pid *cursor = all_data;
165 if (cursor->pid == pid)
167 cursor = cursor->next;
169 cursor = malloc(sizeof(struct per_pid));
170 assert(cursor != NULL);
171 memset(cursor, 0, sizeof(struct per_pid));
173 cursor->next = all_data;
178 static void pid_set_comm(int pid, char *comm)
181 struct per_pidcomm *c;
182 p = find_create_pid(pid);
185 if (c->comm && strcmp(c->comm, comm) == 0) {
190 c->comm = strdup(comm);
196 c = malloc(sizeof(struct per_pidcomm));
198 memset(c, 0, sizeof(struct per_pidcomm));
199 c->comm = strdup(comm);
205 static void pid_fork(int pid, int ppid, u64 timestamp)
207 struct per_pid *p, *pp;
208 p = find_create_pid(pid);
209 pp = find_create_pid(ppid);
211 if (pp->current && pp->current->comm && !p->current)
212 pid_set_comm(pid, pp->current->comm);
214 p->start_time = timestamp;
216 p->current->start_time = timestamp;
217 p->current->state_since = timestamp;
221 static void pid_exit(int pid, u64 timestamp)
224 p = find_create_pid(pid);
225 p->end_time = timestamp;
227 p->current->end_time = timestamp;
231 pid_put_sample(int pid, int type, unsigned int cpu, u64 start, u64 end)
234 struct per_pidcomm *c;
235 struct cpu_sample *sample;
237 p = find_create_pid(pid);
240 c = malloc(sizeof(struct per_pidcomm));
242 memset(c, 0, sizeof(struct per_pidcomm));
248 sample = malloc(sizeof(struct cpu_sample));
249 assert(sample != NULL);
250 memset(sample, 0, sizeof(struct cpu_sample));
251 sample->start_time = start;
252 sample->end_time = end;
254 sample->next = c->samples;
258 if (sample->type == TYPE_RUNNING && end > start && start > 0) {
259 c->total_time += (end-start);
260 p->total_time += (end-start);
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;
269 #define MAX_CPUS 4096
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];
276 static int process_comm_event(union perf_event *event,
277 struct perf_sample *sample __used,
278 struct perf_session *session __used)
280 pid_set_comm(event->comm.tid, event->comm.comm);
284 static int process_fork_event(union perf_event *event,
285 struct perf_sample *sample __used,
286 struct perf_session *session __used)
288 pid_fork(event->fork.pid, event->fork.ppid, event->fork.time);
292 static int process_exit_event(union perf_event *event,
293 struct perf_sample *sample __used,
294 struct perf_session *session __used)
296 pid_exit(event->fork.pid, event->fork.time);
303 unsigned char preempt_count;
308 #ifdef SUPPORT_OLD_POWER_EVENTS
309 static int use_old_power_events;
310 struct power_entry_old {
311 struct trace_entry te;
318 struct power_processor_entry {
319 struct trace_entry te;
324 #define TASK_COMM_LEN 16
325 struct wakeup_entry {
326 struct trace_entry te;
327 char comm[TASK_COMM_LEN];
334 * trace_flag_type is an enumeration that holds different
335 * states when a trace occurs. These are:
336 * IRQS_OFF - interrupts were disabled
337 * IRQS_NOSUPPORT - arch does not support irqs_disabled_flags
338 * NEED_RESCED - reschedule is requested
339 * HARDIRQ - inside an interrupt handler
340 * SOFTIRQ - inside a softirq handler
342 enum trace_flag_type {
343 TRACE_FLAG_IRQS_OFF = 0x01,
344 TRACE_FLAG_IRQS_NOSUPPORT = 0x02,
345 TRACE_FLAG_NEED_RESCHED = 0x04,
346 TRACE_FLAG_HARDIRQ = 0x08,
347 TRACE_FLAG_SOFTIRQ = 0x10,
352 struct sched_switch {
353 struct trace_entry te;
354 char prev_comm[TASK_COMM_LEN];
357 long prev_state; /* Arjan weeps. */
358 char next_comm[TASK_COMM_LEN];
363 static void c_state_start(int cpu, u64 timestamp, int state)
365 cpus_cstate_start_times[cpu] = timestamp;
366 cpus_cstate_state[cpu] = state;
369 static void c_state_end(int cpu, u64 timestamp)
371 struct power_event *pwr;
372 pwr = malloc(sizeof(struct power_event));
375 memset(pwr, 0, sizeof(struct power_event));
377 pwr->state = cpus_cstate_state[cpu];
378 pwr->start_time = cpus_cstate_start_times[cpu];
379 pwr->end_time = timestamp;
382 pwr->next = power_events;
387 static void p_state_change(int cpu, u64 timestamp, u64 new_freq)
389 struct power_event *pwr;
390 pwr = malloc(sizeof(struct power_event));
392 if (new_freq > 8000000) /* detect invalid data */
397 memset(pwr, 0, sizeof(struct power_event));
399 pwr->state = cpus_pstate_state[cpu];
400 pwr->start_time = cpus_pstate_start_times[cpu];
401 pwr->end_time = timestamp;
404 pwr->next = power_events;
406 if (!pwr->start_time)
407 pwr->start_time = first_time;
411 cpus_pstate_state[cpu] = new_freq;
412 cpus_pstate_start_times[cpu] = timestamp;
414 if ((u64)new_freq > max_freq)
417 if (new_freq < min_freq || min_freq == 0)
420 if (new_freq == max_freq - 1000)
421 turbo_frequency = max_freq;
425 sched_wakeup(int cpu, u64 timestamp, int pid, struct trace_entry *te)
427 struct wake_event *we;
429 struct wakeup_entry *wake = (void *)te;
431 we = malloc(sizeof(struct wake_event));
435 memset(we, 0, sizeof(struct wake_event));
436 we->time = timestamp;
439 if ((te->flags & TRACE_FLAG_HARDIRQ) || (te->flags & TRACE_FLAG_SOFTIRQ))
442 we->wakee = wake->pid;
443 we->next = wake_events;
445 p = find_create_pid(we->wakee);
447 if (p && p->current && p->current->state == TYPE_NONE) {
448 p->current->state_since = timestamp;
449 p->current->state = TYPE_WAITING;
451 if (p && p->current && p->current->state == TYPE_BLOCKED) {
452 pid_put_sample(p->pid, p->current->state, cpu, p->current->state_since, timestamp);
453 p->current->state_since = timestamp;
454 p->current->state = TYPE_WAITING;
458 static void sched_switch(int cpu, u64 timestamp, struct trace_entry *te)
460 struct per_pid *p = NULL, *prev_p;
461 struct sched_switch *sw = (void *)te;
464 prev_p = find_create_pid(sw->prev_pid);
466 p = find_create_pid(sw->next_pid);
468 if (prev_p->current && prev_p->current->state != TYPE_NONE)
469 pid_put_sample(sw->prev_pid, TYPE_RUNNING, cpu, prev_p->current->state_since, timestamp);
470 if (p && p->current) {
471 if (p->current->state != TYPE_NONE)
472 pid_put_sample(sw->next_pid, p->current->state, cpu, p->current->state_since, timestamp);
474 p->current->state_since = timestamp;
475 p->current->state = TYPE_RUNNING;
478 if (prev_p->current) {
479 prev_p->current->state = TYPE_NONE;
480 prev_p->current->state_since = timestamp;
481 if (sw->prev_state & 2)
482 prev_p->current->state = TYPE_BLOCKED;
483 if (sw->prev_state == 0)
484 prev_p->current->state = TYPE_WAITING;
489 static int process_sample_event(union perf_event *event __used,
490 struct perf_sample *sample,
491 struct perf_evsel *evsel __used,
492 struct perf_session *session)
494 struct trace_entry *te;
496 if (session->sample_type & PERF_SAMPLE_TIME) {
497 if (!first_time || first_time > sample->time)
498 first_time = sample->time;
499 if (last_time < sample->time)
500 last_time = sample->time;
503 te = (void *)sample->raw_data;
504 if (session->sample_type & PERF_SAMPLE_RAW && sample->raw_size > 0) {
506 #ifdef SUPPORT_OLD_POWER_EVENTS
507 struct power_entry_old *peo;
511 * FIXME: use evsel, its already mapped from id to perf_evsel,
512 * remove perf_header__find_event infrastructure bits.
513 * Mapping all these "power:cpu_idle" strings to the tracepoint
514 * ID and then just comparing against evsel->attr.config.
518 * if (evsel->attr.config == power_cpu_idle_id)
520 event_str = perf_header__find_event(te->type);
525 if (sample->cpu > numcpus)
526 numcpus = sample->cpu;
528 if (strcmp(event_str, "power:cpu_idle") == 0) {
529 struct power_processor_entry *ppe = (void *)te;
530 if (ppe->state == (u32)PWR_EVENT_EXIT)
531 c_state_end(ppe->cpu_id, sample->time);
533 c_state_start(ppe->cpu_id, sample->time,
536 else if (strcmp(event_str, "power:cpu_frequency") == 0) {
537 struct power_processor_entry *ppe = (void *)te;
538 p_state_change(ppe->cpu_id, sample->time, ppe->state);
541 else if (strcmp(event_str, "sched:sched_wakeup") == 0)
542 sched_wakeup(sample->cpu, sample->time, sample->pid, te);
544 else if (strcmp(event_str, "sched:sched_switch") == 0)
545 sched_switch(sample->cpu, sample->time, te);
547 #ifdef SUPPORT_OLD_POWER_EVENTS
548 if (use_old_power_events) {
549 if (strcmp(event_str, "power:power_start") == 0)
550 c_state_start(peo->cpu_id, sample->time,
553 else if (strcmp(event_str, "power:power_end") == 0)
554 c_state_end(sample->cpu, sample->time);
556 else if (strcmp(event_str,
557 "power:power_frequency") == 0)
558 p_state_change(peo->cpu_id, sample->time,
567 * After the last sample we need to wrap up the current C/P state
568 * and close out each CPU for these.
570 static void end_sample_processing(void)
573 struct power_event *pwr;
575 for (cpu = 0; cpu <= numcpus; cpu++) {
576 pwr = malloc(sizeof(struct power_event));
579 memset(pwr, 0, sizeof(struct power_event));
583 pwr->state = cpus_cstate_state[cpu];
584 pwr->start_time = cpus_cstate_start_times[cpu];
585 pwr->end_time = last_time;
588 pwr->next = power_events;
594 pwr = malloc(sizeof(struct power_event));
597 memset(pwr, 0, sizeof(struct power_event));
599 pwr->state = cpus_pstate_state[cpu];
600 pwr->start_time = cpus_pstate_start_times[cpu];
601 pwr->end_time = last_time;
604 pwr->next = power_events;
606 if (!pwr->start_time)
607 pwr->start_time = first_time;
609 pwr->state = min_freq;
615 * Sort the pid datastructure
617 static void sort_pids(void)
619 struct per_pid *new_list, *p, *cursor, *prev;
620 /* sort by ppid first, then by pid, lowest to highest */
629 if (new_list == NULL) {
637 if (cursor->ppid > p->ppid ||
638 (cursor->ppid == p->ppid && cursor->pid > p->pid)) {
639 /* must insert before */
641 p->next = prev->next;
654 cursor = cursor->next;
663 static void draw_c_p_states(void)
665 struct power_event *pwr;
669 * two pass drawing so that the P state bars are on top of the C state blocks
672 if (pwr->type == CSTATE)
673 svg_cstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);
679 if (pwr->type == PSTATE) {
681 pwr->state = min_freq;
682 svg_pstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);
688 static void draw_wakeups(void)
690 struct wake_event *we;
692 struct per_pidcomm *c;
696 int from = 0, to = 0;
697 char *task_from = NULL, *task_to = NULL;
699 /* locate the column of the waker and wakee */
702 if (p->pid == we->waker || p->pid == we->wakee) {
705 if (c->Y && c->start_time <= we->time && c->end_time >= we->time) {
706 if (p->pid == we->waker && !from) {
708 task_from = strdup(c->comm);
710 if (p->pid == we->wakee && !to) {
712 task_to = strdup(c->comm);
719 if (p->pid == we->waker && !from) {
721 task_from = strdup(c->comm);
723 if (p->pid == we->wakee && !to) {
725 task_to = strdup(c->comm);
734 task_from = malloc(40);
735 sprintf(task_from, "[%i]", we->waker);
738 task_to = malloc(40);
739 sprintf(task_to, "[%i]", we->wakee);
743 svg_interrupt(we->time, to);
744 else if (from && to && abs(from - to) == 1)
745 svg_wakeline(we->time, from, to);
747 svg_partial_wakeline(we->time, from, task_from, to, task_to);
755 static void draw_cpu_usage(void)
758 struct per_pidcomm *c;
759 struct cpu_sample *sample;
766 if (sample->type == TYPE_RUNNING)
767 svg_process(sample->cpu, sample->start_time, sample->end_time, "sample", c->comm);
769 sample = sample->next;
777 static void draw_process_bars(void)
780 struct per_pidcomm *c;
781 struct cpu_sample *sample;
796 svg_box(Y, c->start_time, c->end_time, "process");
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;
810 if (c->total_time > 5000000000) /* 5 seconds */
811 sprintf(comm, "%s:%i (%2.2fs)", c->comm, p->pid, c->total_time / 1000000000.0);
813 sprintf(comm, "%s:%i (%3.1fms)", c->comm, p->pid, c->total_time / 1000000.0);
815 svg_text(Y, c->start_time, comm);
825 static void add_process_filter(const char *string)
827 struct process_filter *filt;
830 pid = strtoull(string, NULL, 10);
831 filt = malloc(sizeof(struct process_filter));
835 filt->name = strdup(string);
837 filt->next = process_filter;
839 process_filter = filt;
842 static int passes_filter(struct per_pid *p, struct per_pidcomm *c)
844 struct process_filter *filt;
848 filt = process_filter;
850 if (filt->pid && p->pid == filt->pid)
852 if (strcmp(filt->name, c->comm) == 0)
859 static int determine_display_tasks_filtered(void)
862 struct per_pidcomm *c;
868 if (p->start_time == 1)
869 p->start_time = first_time;
871 /* no exit marker, task kept running to the end */
872 if (p->end_time == 0)
873 p->end_time = last_time;
880 if (c->start_time == 1)
881 c->start_time = first_time;
883 if (passes_filter(p, c)) {
889 if (c->end_time == 0)
890 c->end_time = last_time;
899 static int determine_display_tasks(u64 threshold)
902 struct per_pidcomm *c;
906 return determine_display_tasks_filtered();
911 if (p->start_time == 1)
912 p->start_time = first_time;
914 /* no exit marker, task kept running to the end */
915 if (p->end_time == 0)
916 p->end_time = last_time;
917 if (p->total_time >= threshold && !power_only)
925 if (c->start_time == 1)
926 c->start_time = first_time;
928 if (c->total_time >= threshold && !power_only) {
933 if (c->end_time == 0)
934 c->end_time = last_time;
945 #define TIME_THRESH 10000000
947 static void write_svg_file(const char *filename)
955 count = determine_display_tasks(TIME_THRESH);
957 /* We'd like to show at least 15 tasks; be less picky if we have fewer */
959 count = determine_display_tasks(TIME_THRESH / 10);
961 open_svg(filename, numcpus, count, first_time, last_time);
966 for (i = 0; i < numcpus; i++)
967 svg_cpu_box(i, max_freq, turbo_frequency);
977 static struct perf_event_ops event_ops = {
978 .comm = process_comm_event,
979 .fork = process_fork_event,
980 .exit = process_exit_event,
981 .sample = process_sample_event,
982 .ordered_samples = true,
985 static int __cmd_timechart(void)
987 struct perf_session *session = perf_session__new(input_name, O_RDONLY,
988 0, false, &event_ops);
994 if (!perf_session__has_traces(session, "timechart record"))
997 ret = perf_session__process_events(session, &event_ops);
1001 end_sample_processing();
1005 write_svg_file(output_name);
1007 pr_info("Written %2.1f seconds of trace to %s.\n",
1008 (last_time - first_time) / 1000000000.0, output_name);
1010 perf_session__delete(session);
1014 static const char * const timechart_usage[] = {
1015 "perf timechart [<options>] {record}",
1019 #ifdef SUPPORT_OLD_POWER_EVENTS
1020 static const char * const record_old_args[] = {
1026 "-e", "power:power_start",
1027 "-e", "power:power_end",
1028 "-e", "power:power_frequency",
1029 "-e", "sched:sched_wakeup",
1030 "-e", "sched:sched_switch",
1034 static const char * const record_new_args[] = {
1040 "-e", "power:cpu_frequency",
1041 "-e", "power:cpu_idle",
1042 "-e", "sched:sched_wakeup",
1043 "-e", "sched:sched_switch",
1046 static int __cmd_record(int argc, const char **argv)
1048 unsigned int rec_argc, i, j;
1049 const char **rec_argv;
1050 const char * const *record_args = record_new_args;
1051 unsigned int record_elems = ARRAY_SIZE(record_new_args);
1053 #ifdef SUPPORT_OLD_POWER_EVENTS
1054 if (!is_valid_tracepoint("power:cpu_idle") &&
1055 is_valid_tracepoint("power:power_start")) {
1056 use_old_power_events = 1;
1057 record_args = record_old_args;
1058 record_elems = ARRAY_SIZE(record_old_args);
1062 rec_argc = record_elems + argc - 1;
1063 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1065 if (rec_argv == NULL)
1068 for (i = 0; i < record_elems; i++)
1069 rec_argv[i] = strdup(record_args[i]);
1071 for (j = 1; j < (unsigned int)argc; j++, i++)
1072 rec_argv[i] = argv[j];
1074 return cmd_record(i, rec_argv, NULL);
1078 parse_process(const struct option *opt __used, const char *arg, int __used unset)
1081 add_process_filter(arg);
1085 static const struct option options[] = {
1086 OPT_STRING('i', "input", &input_name, "file",
1088 OPT_STRING('o', "output", &output_name, "file",
1089 "output file name"),
1090 OPT_INTEGER('w', "width", &svg_page_width,
1092 OPT_BOOLEAN('P', "power-only", &power_only,
1093 "output power data only"),
1094 OPT_CALLBACK('p', "process", NULL, "process",
1095 "process selector. Pass a pid or process name.",
1097 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
1098 "Look for files with symbols relative to this directory"),
1103 int cmd_timechart(int argc, const char **argv, const char *prefix __used)
1105 argc = parse_options(argc, argv, options, timechart_usage,
1106 PARSE_OPT_STOP_AT_NON_OPTION);
1110 if (argc && !strncmp(argv[0], "rec", 3))
1111 return __cmd_record(argc, argv);
1113 usage_with_options(timechart_usage, options);
1117 return __cmd_timechart();