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dma40: fix DMA API usage for LLIs
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / tools / perf / builtin-timechart.c
blob746cf03cb05d86a2796c88fca27930ca6e0a8894
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/callchain.h"
25 #include "util/strlist.h"
26
27 #include "perf.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"
34
35 #define SUPPORT_OLD_POWER_EVENTS 1
36 #define PWR_EVENT_EXIT -1
37
38
39 static char const *input_name = "perf.data";
40 static char const *output_name = "output.svg";
41
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;
46
47 static u64 first_time, last_time;
48
49 static bool power_only;
50
51
52 struct per_pid;
53 struct per_pidcomm;
54
55 struct cpu_sample;
56 struct power_event;
57 struct wake_event;
58
59 struct sample_wrapper;
60
61 /*
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
68 * final graph.
69 */
70
71 struct per_pid {
72 struct per_pid *next;
73
74 int pid;
75 int ppid;
76
77 u64 start_time;
78 u64 end_time;
79 u64 total_time;
80 int display;
81
82 struct per_pidcomm *all;
83 struct per_pidcomm *current;
84 };
85
86
87 struct per_pidcomm {
88 struct per_pidcomm *next;
89
90 u64 start_time;
91 u64 end_time;
92 u64 total_time;
93
94 int Y;
95 int display;
96
97 long state;
98 u64 state_since;
99
100 char *comm;
101
102 struct cpu_sample *samples;
103 };
104
105 struct sample_wrapper {
106 struct sample_wrapper *next;
107
108 u64 timestamp;
109 unsigned char data[0];
110 };
111
112 #define TYPE_NONE 0
113 #define TYPE_RUNNING 1
114 #define TYPE_WAITING 2
115 #define TYPE_BLOCKED 3
116
117 struct cpu_sample {
118 struct cpu_sample *next;
119
120 u64 start_time;
121 u64 end_time;
122 int type;
123 int cpu;
124 };
125
126 static struct per_pid *all_data;
127
128 #define CSTATE 1
129 #define PSTATE 2
130
131 struct power_event {
132 struct power_event *next;
133 int type;
134 int state;
135 u64 start_time;
136 u64 end_time;
137 int cpu;
138 };
139
140 struct wake_event {
141 struct wake_event *next;
142 int waker;
143 int wakee;
144 u64 time;
145 };
146
147 static struct power_event *power_events;
148 static struct wake_event *wake_events;
149
150 struct process_filter;
151 struct process_filter {
152 char *name;
153 int pid;
154 struct process_filter *next;
155 };
156
157 static struct process_filter *process_filter;
158
159
160 static struct per_pid *find_create_pid(int pid)
161 {
162 struct per_pid *cursor = all_data;
163
164 while (cursor) {
165 if (cursor->pid == pid)
166 return cursor;
167 cursor = cursor->next;
168 }
169 cursor = malloc(sizeof(struct per_pid));
170 assert(cursor != NULL);
171 memset(cursor, 0, sizeof(struct per_pid));
172 cursor->pid = pid;
173 cursor->next = all_data;
174 all_data = cursor;
175 return cursor;
176 }
177
178 static void pid_set_comm(int pid, char *comm)
179 {
180 struct per_pid *p;
181 struct per_pidcomm *c;
182 p = find_create_pid(pid);
183 c = p->all;
184 while (c) {
185 if (c->comm && strcmp(c->comm, comm) == 0) {
186 p->current = c;
187 return;
188 }
189 if (!c->comm) {
190 c->comm = strdup(comm);
191 p->current = c;
192 return;
193 }
194 c = c->next;
195 }
196 c = malloc(sizeof(struct per_pidcomm));
197 assert(c != NULL);
198 memset(c, 0, sizeof(struct per_pidcomm));
199 c->comm = strdup(comm);
200 p->current = c;
201 c->next = p->all;
202 p->all = c;
203 }
204
205 static void pid_fork(int pid, int ppid, u64 timestamp)
206 {
207 struct per_pid *p, *pp;
208 p = find_create_pid(pid);
209 pp = find_create_pid(ppid);
210 p->ppid = ppid;
211 if (pp->current && pp->current->comm && !p->current)
212 pid_set_comm(pid, pp->current->comm);
213
214 p->start_time = timestamp;
215 if (p->current) {
216 p->current->start_time = timestamp;
217 p->current->state_since = timestamp;
218 }
219 }
220
221 static void pid_exit(int pid, u64 timestamp)
222 {
223 struct per_pid *p;
224 p = find_create_pid(pid);
225 p->end_time = timestamp;
226 if (p->current)
227 p->current->end_time = timestamp;
228 }
229
230 static void
231 pid_put_sample(int pid, int type, unsigned int cpu, u64 start, u64 end)
232 {
233 struct per_pid *p;
234 struct per_pidcomm *c;
235 struct cpu_sample *sample;
236
237 p = find_create_pid(pid);
238 c = p->current;
239 if (!c) {
240 c = malloc(sizeof(struct per_pidcomm));
241 assert(c != NULL);
242 memset(c, 0, sizeof(struct per_pidcomm));
243 p->current = c;
244 c->next = p->all;
245 p->all = c;
246 }
247
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;
253 sample->type = type;
254 sample->next = c->samples;
255 sample->cpu = cpu;
256 c->samples = sample;
257
258 if (sample->type == TYPE_RUNNING && end > start && start > 0) {
259 c->total_time += (end-start);
260 p->total_time += (end-start);
261 }
262
263 if (c->start_time == 0 || c->start_time > start)
264 c->start_time = start;
265 if (p->start_time == 0 || p->start_time > start)
266 p->start_time = start;
267
268 if (cpu > numcpus)
269 numcpus = cpu;
270 }
271
272 #define MAX_CPUS 4096
273
274 static u64 cpus_cstate_start_times[MAX_CPUS];
275 static int cpus_cstate_state[MAX_CPUS];
276 static u64 cpus_pstate_start_times[MAX_CPUS];
277 static u64 cpus_pstate_state[MAX_CPUS];
278
279 static int process_comm_event(event_t *event, struct sample_data *sample __used,
280 struct perf_session *session __used)
281 {
282 pid_set_comm(event->comm.tid, event->comm.comm);
283 return 0;
284 }
285
286 static int process_fork_event(event_t *event, struct sample_data *sample __used,
287 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 sample_data *sample __used,
294 struct perf_session *session __used)
295 {
296 pid_exit(event->fork.pid, event->fork.time);
297 return 0;
298 }
299
300 struct trace_entry {
301 unsigned short type;
302 unsigned char flags;
303 unsigned char preempt_count;
304 int pid;
305 int lock_depth;
306 };
307
308 #ifdef SUPPORT_OLD_POWER_EVENTS
309 static int use_old_power_events;
310 struct power_entry_old {
311 struct trace_entry te;
312 u64 type;
313 u64 value;
314 u64 cpu_id;
315 };
316 #endif
317
318 struct power_processor_entry {
319 struct trace_entry te;
320 u32 state;
321 u32 cpu_id;
322 };
323
324 #define TASK_COMM_LEN 16
325 struct wakeup_entry {
326 struct trace_entry te;
327 char comm[TASK_COMM_LEN];
328 int pid;
329 int prio;
330 int success;
331 };
332
333 /*
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
341 */
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,
348 };
349
350
351
352 struct sched_switch {
353 struct trace_entry te;
354 char prev_comm[TASK_COMM_LEN];
355 int prev_pid;
356 int prev_prio;
357 long prev_state; /* Arjan weeps. */
358 char next_comm[TASK_COMM_LEN];
359 int next_pid;
360 int next_prio;
361 };
362
363 static void c_state_start(int cpu, u64 timestamp, int state)
364 {
365 cpus_cstate_start_times[cpu] = timestamp;
366 cpus_cstate_state[cpu] = state;
367 }
368
369 static void c_state_end(int cpu, u64 timestamp)
370 {
371 struct power_event *pwr;
372 pwr = malloc(sizeof(struct power_event));
373 if (!pwr)
374 return;
375 memset(pwr, 0, sizeof(struct power_event));
376
377 pwr->state = cpus_cstate_state[cpu];
378 pwr->start_time = cpus_cstate_start_times[cpu];
379 pwr->end_time = timestamp;
380 pwr->cpu = cpu;
381 pwr->type = CSTATE;
382 pwr->next = power_events;
383
384 power_events = pwr;
385 }
386
387 static void p_state_change(int cpu, u64 timestamp, u64 new_freq)
388 {
389 struct power_event *pwr;
390 pwr = malloc(sizeof(struct power_event));
391
392 if (new_freq > 8000000) /* detect invalid data */
393 return;
394
395 if (!pwr)
396 return;
397 memset(pwr, 0, sizeof(struct power_event));
398
399 pwr->state = cpus_pstate_state[cpu];
400 pwr->start_time = cpus_pstate_start_times[cpu];
401 pwr->end_time = timestamp;
402 pwr->cpu = cpu;
403 pwr->type = PSTATE;
404 pwr->next = power_events;
405
406 if (!pwr->start_time)
407 pwr->start_time = first_time;
408
409 power_events = pwr;
410
411 cpus_pstate_state[cpu] = new_freq;
412 cpus_pstate_start_times[cpu] = timestamp;
413
414 if ((u64)new_freq > max_freq)
415 max_freq = new_freq;
416
417 if (new_freq < min_freq || min_freq == 0)
418 min_freq = new_freq;
419
420 if (new_freq == max_freq - 1000)
421 turbo_frequency = max_freq;
422 }
423
424 static void
425 sched_wakeup(int cpu, u64 timestamp, int pid, struct trace_entry *te)
426 {
427 struct wake_event *we;
428 struct per_pid *p;
429 struct wakeup_entry *wake = (void *)te;
430
431 we = malloc(sizeof(struct wake_event));
432 if (!we)
433 return;
434
435 memset(we, 0, sizeof(struct wake_event));
436 we->time = timestamp;
437 we->waker = pid;
438
439 if ((te->flags & TRACE_FLAG_HARDIRQ) || (te->flags & TRACE_FLAG_SOFTIRQ))
440 we->waker = -1;
441
442 we->wakee = wake->pid;
443 we->next = wake_events;
444 wake_events = we;
445 p = find_create_pid(we->wakee);
446
447 if (p && p->current && p->current->state == TYPE_NONE) {
448 p->current->state_since = timestamp;
449 p->current->state = TYPE_WAITING;
450 }
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;
455 }
456 }
457
458 static void sched_switch(int cpu, u64 timestamp, struct trace_entry *te)
459 {
460 struct per_pid *p = NULL, *prev_p;
461 struct sched_switch *sw = (void *)te;
462
463
464 prev_p = find_create_pid(sw->prev_pid);
465
466 p = find_create_pid(sw->next_pid);
467
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);
473
474 p->current->state_since = timestamp;
475 p->current->state = TYPE_RUNNING;
476 }
477
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;
485 }
486 }
487
488
489 static int process_sample_event(event_t *event __used,
490 struct sample_data *sample,
491 struct perf_session *session)
492 {
493 struct trace_entry *te;
494
495 if (session->sample_type & PERF_SAMPLE_TIME) {
496 if (!first_time || first_time > sample->time)
497 first_time = sample->time;
498 if (last_time < sample->time)
499 last_time = sample->time;
500 }
501
502 te = (void *)sample->raw_data;
503 if (session->sample_type & PERF_SAMPLE_RAW && sample->raw_size > 0) {
504 char *event_str;
505 #ifdef SUPPORT_OLD_POWER_EVENTS
506 struct power_entry_old *peo;
507 peo = (void *)te;
508 #endif
509 event_str = perf_header__find_event(te->type);
510
511 if (!event_str)
512 return 0;
513
514 if (strcmp(event_str, "power:cpu_idle") == 0) {
515 struct power_processor_entry *ppe = (void *)te;
516 if (ppe->state == (u32)PWR_EVENT_EXIT)
517 c_state_end(ppe->cpu_id, sample->time);
518 else
519 c_state_start(ppe->cpu_id, sample->time,
520 ppe->state);
521 }
522 else if (strcmp(event_str, "power:cpu_frequency") == 0) {
523 struct power_processor_entry *ppe = (void *)te;
524 p_state_change(ppe->cpu_id, sample->time, ppe->state);
525 }
526
527 else if (strcmp(event_str, "sched:sched_wakeup") == 0)
528 sched_wakeup(sample->cpu, sample->time, sample->pid, te);
529
530 else if (strcmp(event_str, "sched:sched_switch") == 0)
531 sched_switch(sample->cpu, sample->time, te);
532
533 #ifdef SUPPORT_OLD_POWER_EVENTS
534 if (use_old_power_events) {
535 if (strcmp(event_str, "power:power_start") == 0)
536 c_state_start(peo->cpu_id, sample->time,
537 peo->value);
538
539 else if (strcmp(event_str, "power:power_end") == 0)
540 c_state_end(sample->cpu, sample->time);
541
542 else if (strcmp(event_str,
543 "power:power_frequency") == 0)
544 p_state_change(peo->cpu_id, sample->time,
545 peo->value);
546 }
547 #endif
548 }
549 return 0;
550 }
551
552 /*
553 * After the last sample we need to wrap up the current C/P state
554 * and close out each CPU for these.
555 */
556 static void end_sample_processing(void)
557 {
558 u64 cpu;
559 struct power_event *pwr;
560
561 for (cpu = 0; cpu <= numcpus; cpu++) {
562 pwr = malloc(sizeof(struct power_event));
563 if (!pwr)
564 return;
565 memset(pwr, 0, sizeof(struct power_event));
566
567 /* C state */
568 #if 0
569 pwr->state = cpus_cstate_state[cpu];
570 pwr->start_time = cpus_cstate_start_times[cpu];
571 pwr->end_time = last_time;
572 pwr->cpu = cpu;
573 pwr->type = CSTATE;
574 pwr->next = power_events;
575
576 power_events = pwr;
577 #endif
578 /* P state */
579
580 pwr = malloc(sizeof(struct power_event));
581 if (!pwr)
582 return;
583 memset(pwr, 0, sizeof(struct power_event));
584
585 pwr->state = cpus_pstate_state[cpu];
586 pwr->start_time = cpus_pstate_start_times[cpu];
587 pwr->end_time = last_time;
588 pwr->cpu = cpu;
589 pwr->type = PSTATE;
590 pwr->next = power_events;
591
592 if (!pwr->start_time)
593 pwr->start_time = first_time;
594 if (!pwr->state)
595 pwr->state = min_freq;
596 power_events = pwr;
597 }
598 }
599
600 /*
601 * Sort the pid datastructure
602 */
603 static void sort_pids(void)
604 {
605 struct per_pid *new_list, *p, *cursor, *prev;
606 /* sort by ppid first, then by pid, lowest to highest */
607
608 new_list = NULL;
609
610 while (all_data) {
611 p = all_data;
612 all_data = p->next;
613 p->next = NULL;
614
615 if (new_list == NULL) {
616 new_list = p;
617 p->next = NULL;
618 continue;
619 }
620 prev = NULL;
621 cursor = new_list;
622 while (cursor) {
623 if (cursor->ppid > p->ppid ||
624 (cursor->ppid == p->ppid && cursor->pid > p->pid)) {
625 /* must insert before */
626 if (prev) {
627 p->next = prev->next;
628 prev->next = p;
629 cursor = NULL;
630 continue;
631 } else {
632 p->next = new_list;
633 new_list = p;
634 cursor = NULL;
635 continue;
636 }
637 }
638
639 prev = cursor;
640 cursor = cursor->next;
641 if (!cursor)
642 prev->next = p;
643 }
644 }
645 all_data = new_list;
646 }
647
648
649 static void draw_c_p_states(void)
650 {
651 struct power_event *pwr;
652 pwr = power_events;
653
654 /*
655 * two pass drawing so that the P state bars are on top of the C state blocks
656 */
657 while (pwr) {
658 if (pwr->type == CSTATE)
659 svg_cstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);
660 pwr = pwr->next;
661 }
662
663 pwr = power_events;
664 while (pwr) {
665 if (pwr->type == PSTATE) {
666 if (!pwr->state)
667 pwr->state = min_freq;
668 svg_pstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);
669 }
670 pwr = pwr->next;
671 }
672 }
673
674 static void draw_wakeups(void)
675 {
676 struct wake_event *we;
677 struct per_pid *p;
678 struct per_pidcomm *c;
679
680 we = wake_events;
681 while (we) {
682 int from = 0, to = 0;
683 char *task_from = NULL, *task_to = NULL;
684
685 /* locate the column of the waker and wakee */
686 p = all_data;
687 while (p) {
688 if (p->pid == we->waker || p->pid == we->wakee) {
689 c = p->all;
690 while (c) {
691 if (c->Y && c->start_time <= we->time && c->end_time >= we->time) {
692 if (p->pid == we->waker && !from) {
693 from = c->Y;
694 task_from = strdup(c->comm);
695 }
696 if (p->pid == we->wakee && !to) {
697 to = c->Y;
698 task_to = strdup(c->comm);
699 }
700 }
701 c = c->next;
702 }
703 c = p->all;
704 while (c) {
705 if (p->pid == we->waker && !from) {
706 from = c->Y;
707 task_from = strdup(c->comm);
708 }
709 if (p->pid == we->wakee && !to) {
710 to = c->Y;
711 task_to = strdup(c->comm);
712 }
713 c = c->next;
714 }
715 }
716 p = p->next;
717 }
718
719 if (!task_from) {
720 task_from = malloc(40);
721 sprintf(task_from, "[%i]", we->waker);
722 }
723 if (!task_to) {
724 task_to = malloc(40);
725 sprintf(task_to, "[%i]", we->wakee);
726 }
727
728 if (we->waker == -1)
729 svg_interrupt(we->time, to);
730 else if (from && to && abs(from - to) == 1)
731 svg_wakeline(we->time, from, to);
732 else
733 svg_partial_wakeline(we->time, from, task_from, to, task_to);
734 we = we->next;
735
736 free(task_from);
737 free(task_to);
738 }
739 }
740
741 static void draw_cpu_usage(void)
742 {
743 struct per_pid *p;
744 struct per_pidcomm *c;
745 struct cpu_sample *sample;
746 p = all_data;
747 while (p) {
748 c = p->all;
749 while (c) {
750 sample = c->samples;
751 while (sample) {
752 if (sample->type == TYPE_RUNNING)
753 svg_process(sample->cpu, sample->start_time, sample->end_time, "sample", c->comm);
754
755 sample = sample->next;
756 }
757 c = c->next;
758 }
759 p = p->next;
760 }
761 }
762
763 static void draw_process_bars(void)
764 {
765 struct per_pid *p;
766 struct per_pidcomm *c;
767 struct cpu_sample *sample;
768 int Y = 0;
769
770 Y = 2 * numcpus + 2;
771
772 p = all_data;
773 while (p) {
774 c = p->all;
775 while (c) {
776 if (!c->display) {
777 c->Y = 0;
778 c = c->next;
779 continue;
780 }
781
782 svg_box(Y, c->start_time, c->end_time, "process");
783 sample = c->samples;
784 while (sample) {
785 if (sample->type == TYPE_RUNNING)
786 svg_sample(Y, sample->cpu, sample->start_time, sample->end_time);
787 if (sample->type == TYPE_BLOCKED)
788 svg_box(Y, sample->start_time, sample->end_time, "blocked");
789 if (sample->type == TYPE_WAITING)
790 svg_waiting(Y, sample->start_time, sample->end_time);
791 sample = sample->next;
792 }
793
794 if (c->comm) {
795 char comm[256];
796 if (c->total_time > 5000000000) /* 5 seconds */
797 sprintf(comm, "%s:%i (%2.2fs)", c->comm, p->pid, c->total_time / 1000000000.0);
798 else
799 sprintf(comm, "%s:%i (%3.1fms)", c->comm, p->pid, c->total_time / 1000000.0);
800
801 svg_text(Y, c->start_time, comm);
802 }
803 c->Y = Y;
804 Y++;
805 c = c->next;
806 }
807 p = p->next;
808 }
809 }
810
811 static void add_process_filter(const char *string)
812 {
813 struct process_filter *filt;
814 int pid;
815
816 pid = strtoull(string, NULL, 10);
817 filt = malloc(sizeof(struct process_filter));
818 if (!filt)
819 return;
820
821 filt->name = strdup(string);
822 filt->pid = pid;
823 filt->next = process_filter;
824
825 process_filter = filt;
826 }
827
828 static int passes_filter(struct per_pid *p, struct per_pidcomm *c)
829 {
830 struct process_filter *filt;
831 if (!process_filter)
832 return 1;
833
834 filt = process_filter;
835 while (filt) {
836 if (filt->pid && p->pid == filt->pid)
837 return 1;
838 if (strcmp(filt->name, c->comm) == 0)
839 return 1;
840 filt = filt->next;
841 }
842 return 0;
843 }
844
845 static int determine_display_tasks_filtered(void)
846 {
847 struct per_pid *p;
848 struct per_pidcomm *c;
849 int count = 0;
850
851 p = all_data;
852 while (p) {
853 p->display = 0;
854 if (p->start_time == 1)
855 p->start_time = first_time;
856
857 /* no exit marker, task kept running to the end */
858 if (p->end_time == 0)
859 p->end_time = last_time;
860
861 c = p->all;
862
863 while (c) {
864 c->display = 0;
865
866 if (c->start_time == 1)
867 c->start_time = first_time;
868
869 if (passes_filter(p, c)) {
870 c->display = 1;
871 p->display = 1;
872 count++;
873 }
874
875 if (c->end_time == 0)
876 c->end_time = last_time;
877
878 c = c->next;
879 }
880 p = p->next;
881 }
882 return count;
883 }
884
885 static int determine_display_tasks(u64 threshold)
886 {
887 struct per_pid *p;
888 struct per_pidcomm *c;
889 int count = 0;
890
891 if (process_filter)
892 return determine_display_tasks_filtered();
893
894 p = all_data;
895 while (p) {
896 p->display = 0;
897 if (p->start_time == 1)
898 p->start_time = first_time;
899
900 /* no exit marker, task kept running to the end */
901 if (p->end_time == 0)
902 p->end_time = last_time;
903 if (p->total_time >= threshold && !power_only)
904 p->display = 1;
905
906 c = p->all;
907
908 while (c) {
909 c->display = 0;
910
911 if (c->start_time == 1)
912 c->start_time = first_time;
913
914 if (c->total_time >= threshold && !power_only) {
915 c->display = 1;
916 count++;
917 }
918
919 if (c->end_time == 0)
920 c->end_time = last_time;
921
922 c = c->next;
923 }
924 p = p->next;
925 }
926 return count;
927 }
928
929
930
931 #define TIME_THRESH 10000000
932
933 static void write_svg_file(const char *filename)
934 {
935 u64 i;
936 int count;
937
938 numcpus++;
939
940
941 count = determine_display_tasks(TIME_THRESH);
942
943 /* We'd like to show at least 15 tasks; be less picky if we have fewer */
944 if (count < 15)
945 count = determine_display_tasks(TIME_THRESH / 10);
946
947 open_svg(filename, numcpus, count, first_time, last_time);
948
949 svg_time_grid();
950 svg_legenda();
951
952 for (i = 0; i < numcpus; i++)
953 svg_cpu_box(i, max_freq, turbo_frequency);
954
955 draw_cpu_usage();
956 draw_process_bars();
957 draw_c_p_states();
958 draw_wakeups();
959
960 svg_close();
961 }
962
963 static struct perf_event_ops event_ops = {
964 .comm = process_comm_event,
965 .fork = process_fork_event,
966 .exit = process_exit_event,
967 .sample = process_sample_event,
968 .ordered_samples = true,
969 };
970
971 static int __cmd_timechart(void)
972 {
973 struct perf_session *session = perf_session__new(input_name, O_RDONLY,
974 0, false, &event_ops);
975 int ret = -EINVAL;
976
977 if (session == NULL)
978 return -ENOMEM;
979
980 if (!perf_session__has_traces(session, "timechart record"))
981 goto out_delete;
982
983 ret = perf_session__process_events(session, &event_ops);
984 if (ret)
985 goto out_delete;
986
987 end_sample_processing();
988
989 sort_pids();
990
991 write_svg_file(output_name);
992
993 pr_info("Written %2.1f seconds of trace to %s.\n",
994 (last_time - first_time) / 1000000000.0, output_name);
995 out_delete:
996 perf_session__delete(session);
997 return ret;
998 }
999
1000 static const char * const timechart_usage[] = {
1001 "perf timechart [<options>] {record}",
1002 NULL
1003 };
1004
1005 #ifdef SUPPORT_OLD_POWER_EVENTS
1006 static const char * const record_old_args[] = {
1007 "record",
1008 "-a",
1009 "-R",
1010 "-f",
1011 "-c", "1",
1012 "-e", "power:power_start",
1013 "-e", "power:power_end",
1014 "-e", "power:power_frequency",
1015 "-e", "sched:sched_wakeup",
1016 "-e", "sched:sched_switch",
1017 };
1018 #endif
1019
1020 static const char * const record_new_args[] = {
1021 "record",
1022 "-a",
1023 "-R",
1024 "-f",
1025 "-c", "1",
1026 "-e", "power:cpu_frequency",
1027 "-e", "power:cpu_idle",
1028 "-e", "sched:sched_wakeup",
1029 "-e", "sched:sched_switch",
1030 };
1031
1032 static int __cmd_record(int argc, const char **argv)
1033 {
1034 unsigned int rec_argc, i, j;
1035 const char **rec_argv;
1036 const char * const *record_args = record_new_args;
1037 unsigned int record_elems = ARRAY_SIZE(record_new_args);
1038
1039 #ifdef SUPPORT_OLD_POWER_EVENTS
1040 if (!is_valid_tracepoint("power:cpu_idle") &&
1041 is_valid_tracepoint("power:power_start")) {
1042 use_old_power_events = 1;
1043 record_args = record_old_args;
1044 record_elems = ARRAY_SIZE(record_old_args);
1045 }
1046 #endif
1047
1048 rec_argc = record_elems + argc - 1;
1049 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1050
1051 if (rec_argv == NULL)
1052 return -ENOMEM;
1053
1054 for (i = 0; i < record_elems; i++)
1055 rec_argv[i] = strdup(record_args[i]);
1056
1057 for (j = 1; j < (unsigned int)argc; j++, i++)
1058 rec_argv[i] = argv[j];
1059
1060 return cmd_record(i, rec_argv, NULL);
1061 }
1062
1063 static int
1064 parse_process(const struct option *opt __used, const char *arg, int __used unset)
1065 {
1066 if (arg)
1067 add_process_filter(arg);
1068 return 0;
1069 }
1070
1071 static const struct option options[] = {
1072 OPT_STRING('i', "input", &input_name, "file",
1073 "input file name"),
1074 OPT_STRING('o', "output", &output_name, "file",
1075 "output file name"),
1076 OPT_INTEGER('w', "width", &svg_page_width,
1077 "page width"),
1078 OPT_BOOLEAN('P', "power-only", &power_only,
1079 "output power data only"),
1080 OPT_CALLBACK('p', "process", NULL, "process",
1081 "process selector. Pass a pid or process name.",
1082 parse_process),
1083 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
1084 "Look for files with symbols relative to this directory"),
1085 OPT_END()
1086 };
1087
1088
1089 int cmd_timechart(int argc, const char **argv, const char *prefix __used)
1090 {
1091 argc = parse_options(argc, argv, options, timechart_usage,
1092 PARSE_OPT_STOP_AT_NON_OPTION);
1093
1094 symbol__init();
1095
1096 if (argc && !strncmp(argv[0], "rec", 3))
1097 return __cmd_record(argc, argv);
1098 else if (argc)
1099 usage_with_options(timechart_usage, options);
1100
1101 setup_pager();
1102
1103 return __cmd_timechart();
1104 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree