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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
29#include "util/parse-options.h"
30#include "util/parse-events.h"
31
32#include "util/thread.h"
33#include "util/sort.h"
34#include "util/hist.h"
35
36static char const *input_name = "perf.data";
37
38static bool force, use_tui, use_stdio;
39static bool hide_unresolved;
40static bool dont_use_callchains;
41
42static bool show_threads;
43static struct perf_read_values show_threads_values;
44
45static const char default_pretty_printing_style[] = "normal";
46static const char *pretty_printing_style = default_pretty_printing_style;
47
48static char callchain_default_opt[] = "fractal,0.5";
49static symbol_filter_t annotate_init;
50
51static int perf_session__add_hist_entry(struct perf_session *session,
52 struct addr_location *al,
53 struct perf_sample *sample,
54 struct perf_evsel *evsel)
55{
56 struct symbol *parent = NULL;
57 int err = 0;
58 struct hist_entry *he;
59
60 if ((sort__has_parent || symbol_conf.use_callchain) && sample->callchain) {
61 err = perf_session__resolve_callchain(session, al->thread,
62 sample->callchain, &parent);
63 if (err)
64 return err;
65 }
66
67 he = __hists__add_entry(&evsel->hists, al, parent, sample->period);
68 if (he == NULL)
69 return -ENOMEM;
70
71 if (symbol_conf.use_callchain) {
72 err = callchain_append(he->callchain, &session->callchain_cursor,
73 sample->period);
74 if (err)
75 return err;
76 }
77
78
79
80
81
82 if (al->sym != NULL && use_browser > 0) {
83 struct annotation *notes = symbol__annotation(he->ms.sym);
84
85 assert(evsel != NULL);
86
87 err = -ENOMEM;
88 if (notes->src == NULL &&
89 symbol__alloc_hist(he->ms.sym, session->evlist->nr_entries) < 0)
90 goto out;
91
92 err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
93 }
94
95 evsel->hists.stats.total_period += sample->period;
96 hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
97out:
98 return err;
99}
100
101
102static int process_sample_event(union perf_event *event,
103 struct perf_sample *sample,
104 struct perf_evsel *evsel,
105 struct perf_session *session)
106{
107 struct addr_location al;
108
109 if (perf_event__preprocess_sample(event, session, &al, sample,
110 annotate_init) < 0) {
111 fprintf(stderr, "problem processing %d event, skipping it.\n",
112 event->header.type);
113 return -1;
114 }
115
116 if (al.filtered || (hide_unresolved && al.sym == NULL))
117 return 0;
118
119 if (al.map != NULL)
120 al.map->dso->hit = 1;
121
122 if (perf_session__add_hist_entry(session, &al, sample, evsel)) {
123 pr_debug("problem incrementing symbol period, skipping event\n");
124 return -1;
125 }
126
127 return 0;
128}
129
130static int process_read_event(union perf_event *event,
131 struct perf_sample *sample __used,
132 struct perf_session *session)
133{
134 struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist,
135 event->read.id);
136 if (show_threads) {
137 const char *name = evsel ? event_name(evsel) : "unknown";
138 perf_read_values_add_value(&show_threads_values,
139 event->read.pid, event->read.tid,
140 event->read.id,
141 name,
142 event->read.value);
143 }
144
145 dump_printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
146 evsel ? event_name(evsel) : "FAIL",
147 event->read.value);
148
149 return 0;
150}
151
152static int perf_session__setup_sample_type(struct perf_session *self)
153{
154 if (!(self->sample_type & PERF_SAMPLE_CALLCHAIN)) {
155 if (sort__has_parent) {
156 fprintf(stderr, "selected --sort parent, but no"
157 " callchain data. Did you call"
158 " perf record without -g?\n");
159 return -EINVAL;
160 }
161 if (symbol_conf.use_callchain) {
162 fprintf(stderr, "selected -g but no callchain data."
163 " Did you call perf record without"
164 " -g?\n");
165 return -1;
166 }
167 } else if (!dont_use_callchains && callchain_param.mode != CHAIN_NONE &&
168 !symbol_conf.use_callchain) {
169 symbol_conf.use_callchain = true;
170 if (callchain_register_param(&callchain_param) < 0) {
171 fprintf(stderr, "Can't register callchain"
172 " params\n");
173 return -EINVAL;
174 }
175 }
176
177 return 0;
178}
179
180static struct perf_event_ops event_ops = {
181 .sample = process_sample_event,
182 .mmap = perf_event__process_mmap,
183 .comm = perf_event__process_comm,
184 .exit = perf_event__process_task,
185 .fork = perf_event__process_task,
186 .lost = perf_event__process_lost,
187 .read = process_read_event,
188 .attr = perf_event__process_attr,
189 .event_type = perf_event__process_event_type,
190 .tracing_data = perf_event__process_tracing_data,
191 .build_id = perf_event__process_build_id,
192 .ordered_samples = true,
193 .ordering_requires_timestamps = true,
194};
195
196extern volatile int session_done;
197
198static void sig_handler(int sig __used)
199{
200 session_done = 1;
201}
202
203static size_t hists__fprintf_nr_sample_events(struct hists *self,
204 const char *evname, FILE *fp)
205{
206 size_t ret;
207 char unit;
208 unsigned long nr_events = self->stats.nr_events[PERF_RECORD_SAMPLE];
209
210 nr_events = convert_unit(nr_events, &unit);
211 ret = fprintf(fp, "# Events: %lu%c", nr_events, unit);
212 if (evname != NULL)
213 ret += fprintf(fp, " %s", evname);
214 return ret + fprintf(fp, "\n#\n");
215}
216
217static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
218 const char *help)
219{
220 struct perf_evsel *pos;
221
222 list_for_each_entry(pos, &evlist->entries, node) {
223 struct hists *hists = &pos->hists;
224 const char *evname = NULL;
225
226 if (rb_first(&hists->entries) != rb_last(&hists->entries))
227 evname = event_name(pos);
228
229 hists__fprintf_nr_sample_events(hists, evname, stdout);
230 hists__fprintf(hists, NULL, false, stdout);
231 fprintf(stdout, "\n\n");
232 }
233
234 if (sort_order == default_sort_order &&
235 parent_pattern == default_parent_pattern) {
236 fprintf(stdout, "#\n# (%s)\n#\n", help);
237
238 if (show_threads) {
239 bool style = !strcmp(pretty_printing_style, "raw");
240 perf_read_values_display(stdout, &show_threads_values,
241 style);
242 perf_read_values_destroy(&show_threads_values);
243 }
244 }
245
246 return 0;
247}
248
249static int __cmd_report(void)
250{
251 int ret = -EINVAL;
252 u64 nr_samples;
253 struct perf_session *session;
254 struct perf_evsel *pos;
255 struct map *kernel_map;
256 struct kmap *kernel_kmap;
257 const char *help = "For a higher level overview, try: perf report --sort comm,dso";
258
259 signal(SIGINT, sig_handler);
260
261 session = perf_session__new(input_name, O_RDONLY, force, false, &event_ops);
262 if (session == NULL)
263 return -ENOMEM;
264
265 if (show_threads)
266 perf_read_values_init(&show_threads_values);
267
268 ret = perf_session__setup_sample_type(session);
269 if (ret)
270 goto out_delete;
271
272 ret = perf_session__process_events(session, &event_ops);
273 if (ret)
274 goto out_delete;
275
276 kernel_map = session->host_machine.vmlinux_maps[MAP__FUNCTION];
277 kernel_kmap = map__kmap(kernel_map);
278 if (kernel_map == NULL ||
279 (kernel_map->dso->hit &&
280 (kernel_kmap->ref_reloc_sym == NULL ||
281 kernel_kmap->ref_reloc_sym->addr == 0))) {
282 const struct dso *kdso = kernel_map->dso;
283
284 ui__warning(
285"Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
286"Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
287"Samples in kernel modules can't be resolved as well.\n\n",
288 RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION]) ?
289"As no suitable kallsyms nor vmlinux was found, kernel samples\n"
290"can't be resolved." :
291"If some relocation was applied (e.g. kexec) symbols may be misresolved.");
292 }
293
294 if (dump_trace) {
295 perf_session__fprintf_nr_events(session, stdout);
296 goto out_delete;
297 }
298
299 if (verbose > 3)
300 perf_session__fprintf(session, stdout);
301
302 if (verbose > 2)
303 perf_session__fprintf_dsos(session, stdout);
304
305 nr_samples = 0;
306 list_for_each_entry(pos, &session->evlist->entries, node) {
307 struct hists *hists = &pos->hists;
308
309 hists__collapse_resort(hists);
310 hists__output_resort(hists);
311 nr_samples += hists->stats.nr_events[PERF_RECORD_SAMPLE];
312 }
313
314 if (nr_samples == 0) {
315 ui__warning("The %s file has no samples!\n", input_name);
316 goto out_delete;
317 }
318
319 if (use_browser > 0)
320 perf_evlist__tui_browse_hists(session->evlist, help);
321 else
322 perf_evlist__tty_browse_hists(session->evlist, help);
323
324out_delete:
325
326
327
328
329
330
331
332
333
334
335
336
337 return ret;
338}
339
340static int
341parse_callchain_opt(const struct option *opt __used, const char *arg,
342 int unset)
343{
344 char *tok, *tok2;
345 char *endptr;
346
347
348
349
350 if (unset) {
351 dont_use_callchains = true;
352 return 0;
353 }
354
355 symbol_conf.use_callchain = true;
356
357 if (!arg)
358 return 0;
359
360 tok = strtok((char *)arg, ",");
361 if (!tok)
362 return -1;
363
364
365 if (!strncmp(tok, "graph", strlen(arg)))
366 callchain_param.mode = CHAIN_GRAPH_ABS;
367
368 else if (!strncmp(tok, "flat", strlen(arg)))
369 callchain_param.mode = CHAIN_FLAT;
370
371 else if (!strncmp(tok, "fractal", strlen(arg)))
372 callchain_param.mode = CHAIN_GRAPH_REL;
373
374 else if (!strncmp(tok, "none", strlen(arg))) {
375 callchain_param.mode = CHAIN_NONE;
376 symbol_conf.use_callchain = false;
377
378 return 0;
379 }
380
381 else
382 return -1;
383
384
385 tok = strtok(NULL, ",");
386 if (!tok)
387 goto setup;
388
389 tok2 = strtok(NULL, ",");
390 callchain_param.min_percent = strtod(tok, &endptr);
391 if (tok == endptr)
392 return -1;
393
394 if (tok2)
395 callchain_param.print_limit = strtod(tok2, &endptr);
396setup:
397 if (callchain_register_param(&callchain_param) < 0) {
398 fprintf(stderr, "Can't register callchain params\n");
399 return -1;
400 }
401 return 0;
402}
403
404static const char * const report_usage[] = {
405 "perf report [<options>] <command>",
406 NULL
407};
408
409static const struct option options[] = {
410 OPT_STRING('i', "input", &input_name, "file",
411 "input file name"),
412 OPT_INCR('v', "verbose", &verbose,
413 "be more verbose (show symbol address, etc)"),
414 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
415 "dump raw trace in ASCII"),
416 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
417 "file", "vmlinux pathname"),
418 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
419 "file", "kallsyms pathname"),
420 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
421 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
422 "load module symbols - WARNING: use only with -k and LIVE kernel"),
423 OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
424 "Show a column with the number of samples"),
425 OPT_BOOLEAN('T', "threads", &show_threads,
426 "Show per-thread event counters"),
427 OPT_STRING(0, "pretty", &pretty_printing_style, "key",
428 "pretty printing style key: normal raw"),
429 OPT_BOOLEAN(0, "tui", &use_tui, "Use the TUI interface"),
430 OPT_BOOLEAN(0, "stdio", &use_stdio, "Use the stdio interface"),
431 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
432 "sort by key(s): pid, comm, dso, symbol, parent"),
433 OPT_BOOLEAN(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
434 "Show sample percentage for different cpu modes"),
435 OPT_STRING('p', "parent", &parent_pattern, "regex",
436 "regex filter to identify parent, see: '--sort parent'"),
437 OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
438 "Only display entries with parent-match"),
439 OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
440 "Display callchains using output_type (graph, flat, fractal, or none) and min percent threshold. "
441 "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
442 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
443 "only consider symbols in these dsos"),
444 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
445 "only consider symbols in these comms"),
446 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
447 "only consider these symbols"),
448 OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
449 "width[,width...]",
450 "don't try to adjust column width, use these fixed values"),
451 OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
452 "separator for columns, no spaces will be added between "
453 "columns '.' is reserved."),
454 OPT_BOOLEAN('U', "hide-unresolved", &hide_unresolved,
455 "Only display entries resolved to a symbol"),
456 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
457 "Look for files with symbols relative to this directory"),
458 OPT_END()
459};
460
461int cmd_report(int argc, const char **argv, const char *prefix __used)
462{
463 argc = parse_options(argc, argv, options, report_usage, 0);
464
465 if (use_stdio)
466 use_browser = 0;
467 else if (use_tui)
468 use_browser = 1;
469
470 if (strcmp(input_name, "-") != 0)
471 setup_browser(true);
472 else
473 use_browser = 0;
474
475
476
477
478
479 if (use_browser > 0) {
480 symbol_conf.priv_size = sizeof(struct annotation);
481 annotate_init = symbol__annotate_init;
482
483
484
485
486
487 if (verbose) {
488
489
490
491
492
493
494 symbol_conf.priv_size += sizeof(u32);
495 symbol_conf.sort_by_name = true;
496 }
497 }
498
499 if (symbol__init() < 0)
500 return -1;
501
502 setup_sorting(report_usage, options);
503
504 if (parent_pattern != default_parent_pattern) {
505 if (sort_dimension__add("parent") < 0)
506 return -1;
507 sort_parent.elide = 1;
508 } else
509 symbol_conf.exclude_other = false;
510
511
512
513
514 if (argc)
515 usage_with_options(report_usage, options);
516
517 sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout);
518 sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout);
519 sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout);
520
521 return __cmd_report();
522}
523
