1
2
3
4
5
6
7
8#include "builtin.h"
9
10#include "util/util.h"
11
12#include "util/color.h"
13#include <linux/list.h>
14#include "util/cache.h"
15#include <linux/rbtree.h>
16#include "util/symbol.h"
17#include "util/callchain.h"
18#include "util/strlist.h"
19#include "util/values.h"
20
21#include "perf.h"
22#include "util/debug.h"
23#include "util/header.h"
24#include "util/session.h"
25
26#include "util/parse-options.h"
27#include "util/parse-events.h"
28
29#include "util/thread.h"
30#include "util/sort.h"
31#include "util/hist.h"
32
33static char const *input_name = "perf.data";
34
35static bool force, use_tui, use_stdio;
36static bool hide_unresolved;
37static bool dont_use_callchains;
38
39static bool show_threads;
40static struct perf_read_values show_threads_values;
41
42static const char default_pretty_printing_style[] = "normal";
43static const char *pretty_printing_style = default_pretty_printing_style;
44
45static char callchain_default_opt[] = "fractal,0.5";
46
47static struct hists *perf_session__hists_findnew(struct perf_session *self,
48 u64 event_stream, u32 type,
49 u64 config)
50{
51 struct rb_node **p = &self->hists_tree.rb_node;
52 struct rb_node *parent = NULL;
53 struct hists *iter, *new;
54
55 while (*p != NULL) {
56 parent = *p;
57 iter = rb_entry(parent, struct hists, rb_node);
58 if (iter->config == config)
59 return iter;
60
61
62 if (config > iter->config)
63 p = &(*p)->rb_right;
64 else
65 p = &(*p)->rb_left;
66 }
67
68 new = malloc(sizeof(struct hists));
69 if (new == NULL)
70 return NULL;
71 memset(new, 0, sizeof(struct hists));
72 new->event_stream = event_stream;
73 new->config = config;
74 new->type = type;
75 rb_link_node(&new->rb_node, parent, p);
76 rb_insert_color(&new->rb_node, &self->hists_tree);
77 return new;
78}
79
80static int perf_session__add_hist_entry(struct perf_session *self,
81 struct addr_location *al,
82 struct sample_data *data)
83{
84 struct map_symbol *syms = NULL;
85 struct symbol *parent = NULL;
86 int err = -ENOMEM;
87 struct hist_entry *he;
88 struct hists *hists;
89 struct perf_event_attr *attr;
90
91 if ((sort__has_parent || symbol_conf.use_callchain) && data->callchain) {
92 syms = perf_session__resolve_callchain(self, al->thread,
93 data->callchain, &parent);
94 if (syms == NULL)
95 return -ENOMEM;
96 }
97
98 attr = perf_header__find_attr(data->id, &self->header);
99 if (attr)
100 hists = perf_session__hists_findnew(self, data->id, attr->type, attr->config);
101 else
102 hists = perf_session__hists_findnew(self, data->id, 0, 0);
103 if (hists == NULL)
104 goto out_free_syms;
105 he = __hists__add_entry(hists, al, parent, data->period);
106 if (he == NULL)
107 goto out_free_syms;
108 err = 0;
109 if (symbol_conf.use_callchain) {
110 err = callchain_append(he->callchain, data->callchain, syms,
111 data->period);
112 if (err)
113 goto out_free_syms;
114 }
115
116
117
118
119
120 if (use_browser > 0)
121 err = hist_entry__inc_addr_samples(he, al->addr);
122out_free_syms:
123 free(syms);
124 return err;
125}
126
127static int add_event_total(struct perf_session *session,
128 struct sample_data *data,
129 struct perf_event_attr *attr)
130{
131 struct hists *hists;
132
133 if (attr)
134 hists = perf_session__hists_findnew(session, data->id,
135 attr->type, attr->config);
136 else
137 hists = perf_session__hists_findnew(session, data->id, 0, 0);
138
139 if (!hists)
140 return -ENOMEM;
141
142 hists->stats.total_period += data->period;
143
144
145
146
147
148 hists__inc_nr_events(hists, PERF_RECORD_SAMPLE);
149 session->hists.stats.total_period += data->period;
150 return 0;
151}
152
153static int process_sample_event(event_t *event, struct sample_data *sample,
154 struct perf_session *session)
155{
156 struct addr_location al;
157 struct perf_event_attr *attr;
158
159 if (event__preprocess_sample(event, session, &al, sample, NULL) < 0) {
160 fprintf(stderr, "problem processing %d event, skipping it.\n",
161 event->header.type);
162 return -1;
163 }
164
165 if (al.filtered || (hide_unresolved && al.sym == NULL))
166 return 0;
167
168 if (perf_session__add_hist_entry(session, &al, sample)) {
169 pr_debug("problem incrementing symbol period, skipping event\n");
170 return -1;
171 }
172
173 attr = perf_header__find_attr(sample->id, &session->header);
174
175 if (add_event_total(session, sample, attr)) {
176 pr_debug("problem adding event period\n");
177 return -1;
178 }
179
180 return 0;
181}
182
183static int process_read_event(event_t *event, struct sample_data *sample __used,
184 struct perf_session *session __used)
185{
186 struct perf_event_attr *attr;
187
188 attr = perf_header__find_attr(event->read.id, &session->header);
189
190 if (show_threads) {
191 const char *name = attr ? __event_name(attr->type, attr->config)
192 : "unknown";
193 perf_read_values_add_value(&show_threads_values,
194 event->read.pid, event->read.tid,
195 event->read.id,
196 name,
197 event->read.value);
198 }
199
200 dump_printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
201 attr ? __event_name(attr->type, attr->config) : "FAIL",
202 event->read.value);
203
204 return 0;
205}
206
207static int perf_session__setup_sample_type(struct perf_session *self)
208{
209 if (!(self->sample_type & PERF_SAMPLE_CALLCHAIN)) {
210 if (sort__has_parent) {
211 fprintf(stderr, "selected --sort parent, but no"
212 " callchain data. Did you call"
213 " perf record without -g?\n");
214 return -EINVAL;
215 }
216 if (symbol_conf.use_callchain) {
217 fprintf(stderr, "selected -g but no callchain data."
218 " Did you call perf record without"
219 " -g?\n");
220 return -1;
221 }
222 } else if (!dont_use_callchains && callchain_param.mode != CHAIN_NONE &&
223 !symbol_conf.use_callchain) {
224 symbol_conf.use_callchain = true;
225 if (register_callchain_param(&callchain_param) < 0) {
226 fprintf(stderr, "Can't register callchain"
227 " params\n");
228 return -EINVAL;
229 }
230 }
231
232 return 0;
233}
234
235static struct perf_event_ops event_ops = {
236 .sample = process_sample_event,
237 .mmap = event__process_mmap,
238 .comm = event__process_comm,
239 .exit = event__process_task,
240 .fork = event__process_task,
241 .lost = event__process_lost,
242 .read = process_read_event,
243 .attr = event__process_attr,
244 .event_type = event__process_event_type,
245 .tracing_data = event__process_tracing_data,
246 .build_id = event__process_build_id,
247 .ordered_samples = true,
248 .ordering_requires_timestamps = true,
249};
250
251extern volatile int session_done;
252
253static void sig_handler(int sig __used)
254{
255 session_done = 1;
256}
257
258static size_t hists__fprintf_nr_sample_events(struct hists *self,
259 const char *evname, FILE *fp)
260{
261 size_t ret;
262 char unit;
263 unsigned long nr_events = self->stats.nr_events[PERF_RECORD_SAMPLE];
264
265 nr_events = convert_unit(nr_events, &unit);
266 ret = fprintf(fp, "# Events: %lu%c", nr_events, unit);
267 if (evname != NULL)
268 ret += fprintf(fp, " %s", evname);
269 return ret + fprintf(fp, "\n#\n");
270}
271
272static int hists__tty_browse_tree(struct rb_root *tree, const char *help)
273{
274 struct rb_node *next = rb_first(tree);
275
276 while (next) {
277 struct hists *hists = rb_entry(next, struct hists, rb_node);
278 const char *evname = NULL;
279
280 if (rb_first(&hists->entries) != rb_last(&hists->entries))
281 evname = __event_name(hists->type, hists->config);
282
283 hists__fprintf_nr_sample_events(hists, evname, stdout);
284 hists__fprintf(hists, NULL, false, stdout);
285 fprintf(stdout, "\n\n");
286 next = rb_next(&hists->rb_node);
287 }
288
289 if (sort_order == default_sort_order &&
290 parent_pattern == default_parent_pattern) {
291 fprintf(stdout, "#\n# (%s)\n#\n", help);
292
293 if (show_threads) {
294 bool style = !strcmp(pretty_printing_style, "raw");
295 perf_read_values_display(stdout, &show_threads_values,
296 style);
297 perf_read_values_destroy(&show_threads_values);
298 }
299 }
300
301 return 0;
302}
303
304static int __cmd_report(void)
305{
306 int ret = -EINVAL;
307 struct perf_session *session;
308 struct rb_node *next;
309 const char *help = "For a higher level overview, try: perf report --sort comm,dso";
310
311 signal(SIGINT, sig_handler);
312
313 session = perf_session__new(input_name, O_RDONLY, force, false, &event_ops);
314 if (session == NULL)
315 return -ENOMEM;
316
317 if (show_threads)
318 perf_read_values_init(&show_threads_values);
319
320 ret = perf_session__setup_sample_type(session);
321 if (ret)
322 goto out_delete;
323
324 ret = perf_session__process_events(session, &event_ops);
325 if (ret)
326 goto out_delete;
327
328 if (dump_trace) {
329 perf_session__fprintf_nr_events(session, stdout);
330 goto out_delete;
331 }
332
333 if (verbose > 3)
334 perf_session__fprintf(session, stdout);
335
336 if (verbose > 2)
337 perf_session__fprintf_dsos(session, stdout);
338
339 next = rb_first(&session->hists_tree);
340 while (next) {
341 struct hists *hists;
342
343 hists = rb_entry(next, struct hists, rb_node);
344 hists__collapse_resort(hists);
345 hists__output_resort(hists);
346 next = rb_next(&hists->rb_node);
347 }
348
349 if (use_browser > 0)
350 hists__tui_browse_tree(&session->hists_tree, help);
351 else
352 hists__tty_browse_tree(&session->hists_tree, help);
353
354out_delete:
355
356
357
358
359
360
361
362
363
364
365
366
367 return ret;
368}
369
370static int
371parse_callchain_opt(const struct option *opt __used, const char *arg,
372 int unset)
373{
374 char *tok, *tok2;
375 char *endptr;
376
377
378
379
380 if (unset) {
381 dont_use_callchains = true;
382 return 0;
383 }
384
385 symbol_conf.use_callchain = true;
386
387 if (!arg)
388 return 0;
389
390 tok = strtok((char *)arg, ",");
391 if (!tok)
392 return -1;
393
394
395 if (!strncmp(tok, "graph", strlen(arg)))
396 callchain_param.mode = CHAIN_GRAPH_ABS;
397
398 else if (!strncmp(tok, "flat", strlen(arg)))
399 callchain_param.mode = CHAIN_FLAT;
400
401 else if (!strncmp(tok, "fractal", strlen(arg)))
402 callchain_param.mode = CHAIN_GRAPH_REL;
403
404 else if (!strncmp(tok, "none", strlen(arg))) {
405 callchain_param.mode = CHAIN_NONE;
406 symbol_conf.use_callchain = false;
407
408 return 0;
409 }
410
411 else
412 return -1;
413
414
415 tok = strtok(NULL, ",");
416 if (!tok)
417 goto setup;
418
419 tok2 = strtok(NULL, ",");
420 callchain_param.min_percent = strtod(tok, &endptr);
421 if (tok == endptr)
422 return -1;
423
424 if (tok2)
425 callchain_param.print_limit = strtod(tok2, &endptr);
426setup:
427 if (register_callchain_param(&callchain_param) < 0) {
428 fprintf(stderr, "Can't register callchain params\n");
429 return -1;
430 }
431 return 0;
432}
433
434static const char * const report_usage[] = {
435 "perf report [<options>] <command>",
436 NULL
437};
438
439static const struct option options[] = {
440 OPT_STRING('i', "input", &input_name, "file",
441 "input file name"),
442 OPT_INCR('v', "verbose", &verbose,
443 "be more verbose (show symbol address, etc)"),
444 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
445 "dump raw trace in ASCII"),
446 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
447 "file", "vmlinux pathname"),
448 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
449 "file", "kallsyms pathname"),
450 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
451 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
452 "load module symbols - WARNING: use only with -k and LIVE kernel"),
453 OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
454 "Show a column with the number of samples"),
455 OPT_BOOLEAN('T', "threads", &show_threads,
456 "Show per-thread event counters"),
457 OPT_STRING(0, "pretty", &pretty_printing_style, "key",
458 "pretty printing style key: normal raw"),
459 OPT_BOOLEAN(0, "tui", &use_tui, "Use the TUI interface"),
460 OPT_BOOLEAN(0, "stdio", &use_stdio, "Use the stdio interface"),
461 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
462 "sort by key(s): pid, comm, dso, symbol, parent"),
463 OPT_BOOLEAN(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
464 "Show sample percentage for different cpu modes"),
465 OPT_STRING('p', "parent", &parent_pattern, "regex",
466 "regex filter to identify parent, see: '--sort parent'"),
467 OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
468 "Only display entries with parent-match"),
469 OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
470 "Display callchains using output_type (graph, flat, fractal, or none) and min percent threshold. "
471 "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
472 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
473 "only consider symbols in these dsos"),
474 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
475 "only consider symbols in these comms"),
476 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
477 "only consider these symbols"),
478 OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
479 "width[,width...]",
480 "don't try to adjust column width, use these fixed values"),
481 OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
482 "separator for columns, no spaces will be added between "
483 "columns '.' is reserved."),
484 OPT_BOOLEAN('U', "hide-unresolved", &hide_unresolved,
485 "Only display entries resolved to a symbol"),
486 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
487 "Look for files with symbols relative to this directory"),
488 OPT_END()
489};
490
491int cmd_report(int argc, const char **argv, const char *prefix __used)
492{
493 argc = parse_options(argc, argv, options, report_usage, 0);
494
495 if (use_stdio)
496 use_browser = 0;
497 else if (use_tui)
498 use_browser = 1;
499
500 if (strcmp(input_name, "-") != 0)
501 setup_browser();
502 else
503 use_browser = 0;
504
505
506
507
508
509 if (use_browser > 0) {
510 symbol_conf.priv_size = sizeof(struct sym_priv);
511
512
513
514
515
516 if (verbose) {
517
518
519
520
521
522
523 symbol_conf.priv_size += sizeof(u32);
524 symbol_conf.sort_by_name = true;
525 }
526 }
527
528 if (symbol__init() < 0)
529 return -1;
530
531 setup_sorting(report_usage, options);
532
533 if (parent_pattern != default_parent_pattern) {
534 if (sort_dimension__add("parent") < 0)
535 return -1;
536 sort_parent.elide = 1;
537 } else
538 symbol_conf.exclude_other = false;
539
540
541
542
543 if (argc)
544 usage_with_options(report_usage, options);
545
546 sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout);
547 sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout);
548 sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout);
549
550 return __cmd_report();
551}
552
