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7
8#include "builtin.h"
9
10#include "util/util.h"
11
12#include "util/annotate.h"
13#include "util/color.h"
14#include <linux/list.h>
15#include "util/cache.h"
16#include <linux/rbtree.h>
17#include "util/symbol.h"
18#include "util/callchain.h"
19#include "util/strlist.h"
20#include "util/values.h"
21
22#include "perf.h"
23#include "util/debug.h"
24#include "util/evlist.h"
25#include "util/evsel.h"
26#include "util/header.h"
27#include "util/session.h"
28#include "util/tool.h"
29
30#include "util/parse-options.h"
31#include "util/parse-events.h"
32
33#include "util/thread.h"
34#include "util/sort.h"
35#include "util/hist.h"
36
37#include <linux/bitmap.h>
38
39struct perf_report {
40 struct perf_tool tool;
41 struct perf_session *session;
42 char const *input_name;
43 bool force, use_tui, use_stdio;
44 bool hide_unresolved;
45 bool dont_use_callchains;
46 bool show_full_info;
47 bool show_threads;
48 bool inverted_callchain;
49 struct perf_read_values show_threads_values;
50 const char *pretty_printing_style;
51 symbol_filter_t annotate_init;
52 const char *cpu_list;
53 DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
54};
55
56static int perf_evsel__add_hist_entry(struct perf_evsel *evsel,
57 struct addr_location *al,
58 struct perf_sample *sample,
59 struct machine *machine)
60{
61 struct symbol *parent = NULL;
62 int err = 0;
63 struct hist_entry *he;
64
65 if ((sort__has_parent || symbol_conf.use_callchain) && sample->callchain) {
66 err = machine__resolve_callchain(machine, evsel, al->thread,
67 sample->callchain, &parent);
68 if (err)
69 return err;
70 }
71
72 he = __hists__add_entry(&evsel->hists, al, parent, sample->period);
73 if (he == NULL)
74 return -ENOMEM;
75
76 if (symbol_conf.use_callchain) {
77 err = callchain_append(he->callchain,
78 &evsel->hists.callchain_cursor,
79 sample->period);
80 if (err)
81 return err;
82 }
83
84
85
86
87
88 if (al->sym != NULL && use_browser > 0) {
89 struct annotation *notes = symbol__annotation(he->ms.sym);
90
91 assert(evsel != NULL);
92
93 err = -ENOMEM;
94 if (notes->src == NULL && symbol__alloc_hist(he->ms.sym) < 0)
95 goto out;
96
97 err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
98 }
99
100 evsel->hists.stats.total_period += sample->period;
101 hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
102out:
103 return err;
104}
105
106
107static int process_sample_event(struct perf_tool *tool,
108 union perf_event *event,
109 struct perf_sample *sample,
110 struct perf_evsel *evsel,
111 struct machine *machine)
112{
113 struct perf_report *rep = container_of(tool, struct perf_report, tool);
114 struct addr_location al;
115
116 if (perf_event__preprocess_sample(event, machine, &al, sample,
117 rep->annotate_init) < 0) {
118 fprintf(stderr, "problem processing %d event, skipping it.\n",
119 event->header.type);
120 return -1;
121 }
122
123 if (al.filtered || (rep->hide_unresolved && al.sym == NULL))
124 return 0;
125
126 if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
127 return 0;
128
129 if (al.map != NULL)
130 al.map->dso->hit = 1;
131
132 if (perf_evsel__add_hist_entry(evsel, &al, sample, machine)) {
133 pr_debug("problem incrementing symbol period, skipping event\n");
134 return -1;
135 }
136
137 return 0;
138}
139
140static int process_read_event(struct perf_tool *tool,
141 union perf_event *event,
142 struct perf_sample *sample __used,
143 struct perf_evsel *evsel,
144 struct machine *machine __used)
145{
146 struct perf_report *rep = container_of(tool, struct perf_report, tool);
147
148 if (rep->show_threads) {
149 const char *name = evsel ? event_name(evsel) : "unknown";
150 perf_read_values_add_value(&rep->show_threads_values,
151 event->read.pid, event->read.tid,
152 event->read.id,
153 name,
154 event->read.value);
155 }
156
157 dump_printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
158 evsel ? event_name(evsel) : "FAIL",
159 event->read.value);
160
161 return 0;
162}
163
164static int perf_report__setup_sample_type(struct perf_report *rep)
165{
166 struct perf_session *self = rep->session;
167
168 if (!(self->sample_type & PERF_SAMPLE_CALLCHAIN)) {
169 if (sort__has_parent) {
170 ui__warning("Selected --sort parent, but no "
171 "callchain data. Did you call "
172 "'perf record' without -g?\n");
173 return -EINVAL;
174 }
175 if (symbol_conf.use_callchain) {
176 ui__warning("Selected -g but no callchain data. Did "
177 "you call 'perf record' without -g?\n");
178 return -1;
179 }
180 } else if (!rep->dont_use_callchains &&
181 callchain_param.mode != CHAIN_NONE &&
182 !symbol_conf.use_callchain) {
183 symbol_conf.use_callchain = true;
184 if (callchain_register_param(&callchain_param) < 0) {
185 ui__warning("Can't register callchain "
186 "params.\n");
187 return -EINVAL;
188 }
189 }
190
191 return 0;
192}
193
194extern volatile int session_done;
195
196static void sig_handler(int sig __used)
197{
198 session_done = 1;
199}
200
201static size_t hists__fprintf_nr_sample_events(struct hists *self,
202 const char *evname, FILE *fp)
203{
204 size_t ret;
205 char unit;
206 unsigned long nr_events = self->stats.nr_events[PERF_RECORD_SAMPLE];
207
208 nr_events = convert_unit(nr_events, &unit);
209 ret = fprintf(fp, "# Events: %lu%c", nr_events, unit);
210 if (evname != NULL)
211 ret += fprintf(fp, " %s", evname);
212 return ret + fprintf(fp, "\n#\n");
213}
214
215static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
216 struct perf_report *rep,
217 const char *help)
218{
219 struct perf_evsel *pos;
220
221 list_for_each_entry(pos, &evlist->entries, node) {
222 struct hists *hists = &pos->hists;
223 const char *evname = event_name(pos);
224
225 hists__fprintf_nr_sample_events(hists, evname, stdout);
226 hists__fprintf(hists, NULL, false, true, 0, 0, stdout);
227 fprintf(stdout, "\n\n");
228 }
229
230 if (sort_order == default_sort_order &&
231 parent_pattern == default_parent_pattern) {
232 fprintf(stdout, "#\n# (%s)\n#\n", help);
233
234 if (rep->show_threads) {
235 bool style = !strcmp(rep->pretty_printing_style, "raw");
236 perf_read_values_display(stdout, &rep->show_threads_values,
237 style);
238 perf_read_values_destroy(&rep->show_threads_values);
239 }
240 }
241
242 return 0;
243}
244
245static int __cmd_report(struct perf_report *rep)
246{
247 int ret = -EINVAL;
248 u64 nr_samples;
249 struct perf_session *session;
250 struct perf_evsel *pos;
251 struct map *kernel_map;
252 struct kmap *kernel_kmap;
253 const char *help = "For a higher level overview, try: perf report --sort comm,dso";
254
255 signal(SIGINT, sig_handler);
256
257 session = perf_session__new(rep->input_name, O_RDONLY,
258 rep->force, false, &rep->tool);
259 if (session == NULL)
260 return -ENOMEM;
261
262 rep->session = session;
263
264 if (rep->cpu_list) {
265 ret = perf_session__cpu_bitmap(session, rep->cpu_list,
266 rep->cpu_bitmap);
267 if (ret)
268 goto out_delete;
269 }
270
271 if (use_browser <= 0)
272 perf_session__fprintf_info(session, stdout, rep->show_full_info);
273
274 if (rep->show_threads)
275 perf_read_values_init(&rep->show_threads_values);
276
277 ret = perf_report__setup_sample_type(rep);
278 if (ret)
279 goto out_delete;
280
281 ret = perf_session__process_events(session, &rep->tool);
282 if (ret)
283 goto out_delete;
284
285 kernel_map = session->host_machine.vmlinux_maps[MAP__FUNCTION];
286 kernel_kmap = map__kmap(kernel_map);
287 if (kernel_map == NULL ||
288 (kernel_map->dso->hit &&
289 (kernel_kmap->ref_reloc_sym == NULL ||
290 kernel_kmap->ref_reloc_sym->addr == 0))) {
291 const struct dso *kdso = kernel_map->dso;
292
293 ui__warning(
294"Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
295"Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
296"Samples in kernel modules can't be resolved as well.\n\n",
297 RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION]) ?
298"As no suitable kallsyms nor vmlinux was found, kernel samples\n"
299"can't be resolved." :
300"If some relocation was applied (e.g. kexec) symbols may be misresolved.");
301 }
302
303 if (dump_trace) {
304 perf_session__fprintf_nr_events(session, stdout);
305 goto out_delete;
306 }
307
308 if (verbose > 3)
309 perf_session__fprintf(session, stdout);
310
311 if (verbose > 2)
312 perf_session__fprintf_dsos(session, stdout);
313
314 nr_samples = 0;
315 list_for_each_entry(pos, &session->evlist->entries, node) {
316 struct hists *hists = &pos->hists;
317
318 hists__collapse_resort(hists);
319 hists__output_resort(hists);
320 nr_samples += hists->stats.nr_events[PERF_RECORD_SAMPLE];
321 }
322
323 if (nr_samples == 0) {
324 ui__warning("The %s file has no samples!\n", session->filename);
325 goto out_delete;
326 }
327
328 if (use_browser > 0) {
329 perf_evlist__tui_browse_hists(session->evlist, help,
330 NULL, NULL, 0);
331 } else
332 perf_evlist__tty_browse_hists(session->evlist, rep, help);
333
334out_delete:
335
336
337
338
339
340
341
342
343
344
345
346
347 return ret;
348}
349
350static int
351parse_callchain_opt(const struct option *opt, const char *arg, int unset)
352{
353 struct perf_report *rep = (struct perf_report *)opt->value;
354 char *tok, *tok2;
355 char *endptr;
356
357
358
359
360 if (unset) {
361 rep->dont_use_callchains = true;
362 return 0;
363 }
364
365 symbol_conf.use_callchain = true;
366
367 if (!arg)
368 return 0;
369
370 tok = strtok((char *)arg, ",");
371 if (!tok)
372 return -1;
373
374
375 if (!strncmp(tok, "graph", strlen(arg)))
376 callchain_param.mode = CHAIN_GRAPH_ABS;
377
378 else if (!strncmp(tok, "flat", strlen(arg)))
379 callchain_param.mode = CHAIN_FLAT;
380
381 else if (!strncmp(tok, "fractal", strlen(arg)))
382 callchain_param.mode = CHAIN_GRAPH_REL;
383
384 else if (!strncmp(tok, "none", strlen(arg))) {
385 callchain_param.mode = CHAIN_NONE;
386 symbol_conf.use_callchain = false;
387
388 return 0;
389 }
390
391 else
392 return -1;
393
394
395 tok = strtok(NULL, ",");
396 if (!tok)
397 goto setup;
398
399 callchain_param.min_percent = strtod(tok, &endptr);
400 if (tok == endptr)
401 return -1;
402
403
404 tok2 = strtok(NULL, ",");
405 if (!tok2)
406 goto setup;
407
408 if (tok2[0] != 'c') {
409 callchain_param.print_limit = strtoul(tok2, &endptr, 0);
410 tok2 = strtok(NULL, ",");
411 if (!tok2)
412 goto setup;
413 }
414
415
416 if (!strcmp(tok2, "caller"))
417 callchain_param.order = ORDER_CALLER;
418 else if (!strcmp(tok2, "callee"))
419 callchain_param.order = ORDER_CALLEE;
420 else
421 return -1;
422setup:
423 if (callchain_register_param(&callchain_param) < 0) {
424 fprintf(stderr, "Can't register callchain params\n");
425 return -1;
426 }
427 return 0;
428}
429
430int cmd_report(int argc, const char **argv, const char *prefix __used)
431{
432 struct stat st;
433 char callchain_default_opt[] = "fractal,0.5,callee";
434 const char * const report_usage[] = {
435 "perf report [<options>]",
436 NULL
437 };
438 struct perf_report report = {
439 .tool = {
440 .sample = process_sample_event,
441 .mmap = perf_event__process_mmap,
442 .comm = perf_event__process_comm,
443 .exit = perf_event__process_task,
444 .fork = perf_event__process_task,
445 .lost = perf_event__process_lost,
446 .read = process_read_event,
447 .attr = perf_event__process_attr,
448 .event_type = perf_event__process_event_type,
449 .tracing_data = perf_event__process_tracing_data,
450 .build_id = perf_event__process_build_id,
451 .ordered_samples = true,
452 .ordering_requires_timestamps = true,
453 },
454 .pretty_printing_style = "normal",
455 };
456 const struct option options[] = {
457 OPT_STRING('i', "input", &report.input_name, "file",
458 "input file name"),
459 OPT_INCR('v', "verbose", &verbose,
460 "be more verbose (show symbol address, etc)"),
461 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
462 "dump raw trace in ASCII"),
463 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
464 "file", "vmlinux pathname"),
465 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
466 "file", "kallsyms pathname"),
467 OPT_BOOLEAN('f', "force", &report.force, "don't complain, do it"),
468 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
469 "load module symbols - WARNING: use only with -k and LIVE kernel"),
470 OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
471 "Show a column with the number of samples"),
472 OPT_BOOLEAN('T', "threads", &report.show_threads,
473 "Show per-thread event counters"),
474 OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
475 "pretty printing style key: normal raw"),
476 OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
477 OPT_BOOLEAN(0, "stdio", &report.use_stdio,
478 "Use the stdio interface"),
479 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
480 "sort by key(s): pid, comm, dso, symbol, parent"),
481 OPT_BOOLEAN(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
482 "Show sample percentage for different cpu modes"),
483 OPT_STRING('p', "parent", &parent_pattern, "regex",
484 "regex filter to identify parent, see: '--sort parent'"),
485 OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
486 "Only display entries with parent-match"),
487 OPT_CALLBACK_DEFAULT('g', "call-graph", &report, "output_type,min_percent[,print_limit],call_order",
488 "Display callchains using output_type (graph, flat, fractal, or none) , min percent threshold, optional print limit and callchain order. "
489 "Default: fractal,0.5,callee", &parse_callchain_opt, callchain_default_opt),
490 OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
491 "alias for inverted call graph"),
492 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
493 "only consider symbols in these dsos"),
494 OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
495 "only consider symbols in these comms"),
496 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
497 "only consider these symbols"),
498 OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
499 "width[,width...]",
500 "don't try to adjust column width, use these fixed values"),
501 OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
502 "separator for columns, no spaces will be added between "
503 "columns '.' is reserved."),
504 OPT_BOOLEAN('U', "hide-unresolved", &report.hide_unresolved,
505 "Only display entries resolved to a symbol"),
506 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
507 "Look for files with symbols relative to this directory"),
508 OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
509 "list of cpus to profile"),
510 OPT_BOOLEAN('I', "show-info", &report.show_full_info,
511 "Display extended information about perf.data file"),
512 OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
513 "Interleave source code with assembly code (default)"),
514 OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
515 "Display raw encoding of assembly instructions (default)"),
516 OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
517 "Specify disassembler style (e.g. -M intel for intel syntax)"),
518 OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
519 "Show a column with the sum of periods"),
520 OPT_END()
521 };
522
523 argc = parse_options(argc, argv, options, report_usage, 0);
524
525 if (report.use_stdio)
526 use_browser = 0;
527 else if (report.use_tui)
528 use_browser = 1;
529
530 if (report.inverted_callchain)
531 callchain_param.order = ORDER_CALLER;
532
533 if (!report.input_name || !strlen(report.input_name)) {
534 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
535 report.input_name = "-";
536 else
537 report.input_name = "perf.data";
538 }
539
540 if (strcmp(report.input_name, "-") != 0)
541 setup_browser(true);
542 else
543 use_browser = 0;
544
545
546
547
548
549
550 if (use_browser > 0) {
551 symbol_conf.priv_size = sizeof(struct annotation);
552 report.annotate_init = symbol__annotate_init;
553
554
555
556
557
558 if (verbose) {
559
560
561
562
563
564
565 symbol_conf.priv_size += sizeof(u32);
566 symbol_conf.sort_by_name = true;
567 }
568 }
569
570 if (symbol__init() < 0)
571 return -1;
572
573 setup_sorting(report_usage, options);
574
575 if (parent_pattern != default_parent_pattern) {
576 if (sort_dimension__add("parent") < 0)
577 return -1;
578
579
580
581
582
583
584 if (!strstr(sort_order, "parent"))
585 sort_parent.elide = 1;
586 } else
587 symbol_conf.exclude_other = false;
588
589
590
591
592 if (argc)
593 usage_with_options(report_usage, options);
594
595 sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout);
596 sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout);
597 sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout);
598
599 return __cmd_report(&report);
600}
601
