1
2
3
4
5
6
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
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
36#include <linux/bitmap.h>
37
38static char const *input_name = "perf.data";
39
40static bool force, use_tui, use_stdio;
41static bool hide_unresolved;
42static bool dont_use_callchains;
43
44static bool show_threads;
45static struct perf_read_values show_threads_values;
46
47static const char default_pretty_printing_style[] = "normal";
48static const char *pretty_printing_style = default_pretty_printing_style;
49
50static char callchain_default_opt[] = "fractal,0.5,callee";
51static bool inverted_callchain;
52static symbol_filter_t annotate_init;
53
54static const char *cpu_list;
55static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
56
57static int perf_session__add_hist_entry(struct perf_session *session,
58 struct addr_location *al,
59 struct perf_sample *sample,
60 struct perf_evsel *evsel)
61{
62 struct symbol *parent = NULL;
63 int err = 0;
64 struct hist_entry *he;
65
66 if ((sort__has_parent || symbol_conf.use_callchain) && sample->callchain) {
67 err = perf_session__resolve_callchain(session, al->thread,
68 sample->callchain, &parent);
69 if (err)
70 return err;
71 }
72
73 he = __hists__add_entry(&evsel->hists, al, parent, sample->period);
74 if (he == NULL)
75 return -ENOMEM;
76
77 if (symbol_conf.use_callchain) {
78 err = callchain_append(he->callchain, &session->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 &&
95 symbol__alloc_hist(he->ms.sym, session->evlist->nr_entries) < 0)
96 goto out;
97
98 err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
99 }
100
101 evsel->hists.stats.total_period += sample->period;
102 hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
103out:
104 return err;
105}
106
107
108static int process_sample_event(union perf_event *event,
109 struct perf_sample *sample,
110 struct perf_evsel *evsel,
111 struct perf_session *session)
112{
113 struct addr_location al;
114
115 if (perf_event__preprocess_sample(event, session, &al, sample,
116 annotate_init) < 0) {
117 fprintf(stderr, "problem processing %d event, skipping it.\n",
118 event->header.type);
119 return -1;
120 }
121
122 if (al.filtered || (hide_unresolved && al.sym == NULL))
123 return 0;
124
125 if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
126 return 0;
127
128 if (al.map != NULL)
129 al.map->dso->hit = 1;
130
131 if (perf_session__add_hist_entry(session, &al, sample, evsel)) {
132 pr_debug("problem incrementing symbol period, skipping event\n");
133 return -1;
134 }
135
136 return 0;
137}
138
139static int process_read_event(union perf_event *event,
140 struct perf_sample *sample __used,
141 struct perf_session *session)
142{
143 struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist,
144 event->read.id);
145 if (show_threads) {
146 const char *name = evsel ? event_name(evsel) : "unknown";
147 perf_read_values_add_value(&show_threads_values,
148 event->read.pid, event->read.tid,
149 event->read.id,
150 name,
151 event->read.value);
152 }
153
154 dump_printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
155 evsel ? event_name(evsel) : "FAIL",
156 event->read.value);
157
158 return 0;
159}
160
161static int perf_session__setup_sample_type(struct perf_session *self)
162{
163 if (!(self->sample_type & PERF_SAMPLE_CALLCHAIN)) {
164 if (sort__has_parent) {
165 ui__warning("Selected --sort parent, but no "
166 "callchain data. Did you call "
167 "'perf record' without -g?\n");
168 return -EINVAL;
169 }
170 if (symbol_conf.use_callchain) {
171 ui__warning("Selected -g but no callchain data. Did "
172 "you call 'perf record' without -g?\n");
173 return -1;
174 }
175 } else if (!dont_use_callchains && callchain_param.mode != CHAIN_NONE &&
176 !symbol_conf.use_callchain) {
177 symbol_conf.use_callchain = true;
178 if (callchain_register_param(&callchain_param) < 0) {
179 ui__warning("Can't register callchain "
180 "params.\n");
181 return -EINVAL;
182 }
183 }
184
185 return 0;
186}
187
188static struct perf_event_ops event_ops = {
189 .sample = process_sample_event,
190 .mmap = perf_event__process_mmap,
191 .comm = perf_event__process_comm,
192 .exit = perf_event__process_task,
193 .fork = perf_event__process_task,
194 .lost = perf_event__process_lost,
195 .read = process_read_event,
196 .attr = perf_event__process_attr,
197 .event_type = perf_event__process_event_type,
198 .tracing_data = perf_event__process_tracing_data,
199 .build_id = perf_event__process_build_id,
200 .ordered_samples = true,
201 .ordering_requires_timestamps = true,
202};
203
204extern volatile int session_done;
205
206static void sig_handler(int sig __used)
207{
208 session_done = 1;
209}
210
211static size_t hists__fprintf_nr_sample_events(struct hists *self,
212 const char *evname, FILE *fp)
213{
214 size_t ret;
215 char unit;
216 unsigned long nr_events = self->stats.nr_events[PERF_RECORD_SAMPLE];
217
218 nr_events = convert_unit(nr_events, &unit);
219 ret = fprintf(fp, "# Events: %lu%c", nr_events, unit);
220 if (evname != NULL)
221 ret += fprintf(fp, " %s", evname);
222 return ret + fprintf(fp, "\n#\n");
223}
224
225static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
226 const char *help)
227{
228 struct perf_evsel *pos;
229
230 list_for_each_entry(pos, &evlist->entries, node) {
231 struct hists *hists = &pos->hists;
232 const char *evname = NULL;
233
234 if (rb_first(&hists->entries) != rb_last(&hists->entries))
235 evname = event_name(pos);
236
237 hists__fprintf_nr_sample_events(hists, evname, stdout);
238 hists__fprintf(hists, NULL, false, stdout);
239 fprintf(stdout, "\n\n");
240 }
241
242 if (sort_order == default_sort_order &&
243 parent_pattern == default_parent_pattern) {
244 fprintf(stdout, "#\n# (%s)\n#\n", help);
245
246 if (show_threads) {
247 bool style = !strcmp(pretty_printing_style, "raw");
248 perf_read_values_display(stdout, &show_threads_values,
249 style);
250 perf_read_values_destroy(&show_threads_values);
251 }
252 }
253
254 return 0;
255}
256
257static int __cmd_report(void)
258{
259 int ret = -EINVAL;
260 u64 nr_samples;
261 struct perf_session *session;
262 struct perf_evsel *pos;
263 struct map *kernel_map;
264 struct kmap *kernel_kmap;
265 const char *help = "For a higher level overview, try: perf report --sort comm,dso";
266
267 signal(SIGINT, sig_handler);
268
269 session = perf_session__new(input_name, O_RDONLY, force, false, &event_ops);
270 if (session == NULL)
271 return -ENOMEM;
272
273 if (cpu_list) {
274 ret = perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap);
275 if (ret)
276 goto out_delete;
277 }
278
279 if (show_threads)
280 perf_read_values_init(&show_threads_values);
281
282 ret = perf_session__setup_sample_type(session);
283 if (ret)
284 goto out_delete;
285
286 ret = perf_session__process_events(session, &event_ops);
287 if (ret)
288 goto out_delete;
289
290 kernel_map = session->host_machine.vmlinux_maps[MAP__FUNCTION];
291 kernel_kmap = map__kmap(kernel_map);
292 if (kernel_map == NULL ||
293 (kernel_map->dso->hit &&
294 (kernel_kmap->ref_reloc_sym == NULL ||
295 kernel_kmap->ref_reloc_sym->addr == 0))) {
296 const struct dso *kdso = kernel_map->dso;
297
298 ui__warning(
299"Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
300"Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
301"Samples in kernel modules can't be resolved as well.\n\n",
302 RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION]) ?
303"As no suitable kallsyms nor vmlinux was found, kernel samples\n"
304"can't be resolved." :
305"If some relocation was applied (e.g. kexec) symbols may be misresolved.");
306 }
307
308 if (dump_trace) {
309 perf_session__fprintf_nr_events(session, stdout);
310 goto out_delete;
311 }
312
313 if (verbose > 3)
314 perf_session__fprintf(session, stdout);
315
316 if (verbose > 2)
317 perf_session__fprintf_dsos(session, stdout);
318
319 nr_samples = 0;
320 list_for_each_entry(pos, &session->evlist->entries, node) {
321 struct hists *hists = &pos->hists;
322
323 hists__collapse_resort(hists);
324 hists__output_resort(hists);
325 nr_samples += hists->stats.nr_events[PERF_RECORD_SAMPLE];
326 }
327
328 if (nr_samples == 0) {
329 ui__warning("The %s file has no samples!\n", input_name);
330 goto out_delete;
331 }
332
333 if (use_browser > 0)
334 perf_evlist__tui_browse_hists(session->evlist, help);
335 else
336 perf_evlist__tty_browse_hists(session->evlist, help);
337
338out_delete:
339
340
341
342
343
344
345
346
347
348
349
350
351 return ret;
352}
353
354static int
355parse_callchain_opt(const struct option *opt __used, const char *arg,
356 int unset)
357{
358 char *tok, *tok2;
359 char *endptr;
360
361
362
363
364 if (unset) {
365 dont_use_callchains = true;
366 return 0;
367 }
368
369 symbol_conf.use_callchain = true;
370
371 if (!arg)
372 return 0;
373
374 tok = strtok((char *)arg, ",");
375 if (!tok)
376 return -1;
377
378
379 if (!strncmp(tok, "graph", strlen(arg)))
380 callchain_param.mode = CHAIN_GRAPH_ABS;
381
382 else if (!strncmp(tok, "flat", strlen(arg)))
383 callchain_param.mode = CHAIN_FLAT;
384
385 else if (!strncmp(tok, "fractal", strlen(arg)))
386 callchain_param.mode = CHAIN_GRAPH_REL;
387
388 else if (!strncmp(tok, "none", strlen(arg))) {
389 callchain_param.mode = CHAIN_NONE;
390 symbol_conf.use_callchain = false;
391
392 return 0;
393 }
394
395 else
396 return -1;
397
398
399 tok = strtok(NULL, ",");
400 if (!tok)
401 goto setup;
402
403 callchain_param.min_percent = strtod(tok, &endptr);
404 if (tok == endptr)
405 return -1;
406
407
408 tok2 = strtok(NULL, ",");
409 if (!tok2)
410 goto setup;
411
412 if (tok2[0] != 'c') {
413 callchain_param.print_limit = strtod(tok2, &endptr);
414 tok2 = strtok(NULL, ",");
415 if (!tok2)
416 goto setup;
417 }
418
419
420 if (!strcmp(tok2, "caller"))
421 callchain_param.order = ORDER_CALLER;
422 else if (!strcmp(tok2, "callee"))
423 callchain_param.order = ORDER_CALLEE;
424 else
425 return -1;
426setup:
427 if (callchain_register_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, call_order",
470 "Display callchains using output_type (graph, flat, fractal, or none) , min percent threshold and callchain order. "
471 "Default: fractal,0.5,callee", &parse_callchain_opt, callchain_default_opt),
472 OPT_BOOLEAN('G', "inverted", &inverted_callchain, "alias for inverted call graph"),
473 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
474 "only consider symbols in these dsos"),
475 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
476 "only consider symbols in these comms"),
477 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
478 "only consider these symbols"),
479 OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
480 "width[,width...]",
481 "don't try to adjust column width, use these fixed values"),
482 OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
483 "separator for columns, no spaces will be added between "
484 "columns '.' is reserved."),
485 OPT_BOOLEAN('U', "hide-unresolved", &hide_unresolved,
486 "Only display entries resolved to a symbol"),
487 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
488 "Look for files with symbols relative to this directory"),
489 OPT_STRING('c', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
490 OPT_END()
491};
492
493int cmd_report(int argc, const char **argv, const char *prefix __used)
494{
495 argc = parse_options(argc, argv, options, report_usage, 0);
496
497 if (use_stdio)
498 use_browser = 0;
499 else if (use_tui)
500 use_browser = 1;
501
502 if (inverted_callchain)
503 callchain_param.order = ORDER_CALLER;
504
505 if (strcmp(input_name, "-") != 0)
506 setup_browser(true);
507 else
508 use_browser = 0;
509
510
511
512
513
514 if (use_browser > 0) {
515 symbol_conf.priv_size = sizeof(struct annotation);
516 annotate_init = symbol__annotate_init;
517
518
519
520
521
522 if (verbose) {
523
524
525
526
527
528
529 symbol_conf.priv_size += sizeof(u32);
530 symbol_conf.sort_by_name = true;
531 }
532 }
533
534 if (symbol__init() < 0)
535 return -1;
536
537 setup_sorting(report_usage, options);
538
539 if (parent_pattern != default_parent_pattern) {
540 if (sort_dimension__add("parent") < 0)
541 return -1;
542
543
544
545
546
547
548 if (!strstr(sort_order, "parent"))
549 sort_parent.elide = 1;
550 } else
551 symbol_conf.exclude_other = false;
552
553
554
555
556 if (argc)
557 usage_with_options(report_usage, options);
558
559 sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout);
560 sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout);
561 sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout);
562
563 return __cmd_report();
564}
565
