perf session: Move the hist_entries rb tree to perf_session
[linux-2.6.git] / tools / perf / builtin-report.c
1 /*
2  * builtin-report.c
3  *
4  * Builtin report command: Analyze the perf.data input file,
5  * look up and read DSOs and symbol information and display
6  * a histogram of results, along various sorting keys.
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/string.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/header.h"
25 #include "util/session.h"
26
27 #include "util/parse-options.h"
28 #include "util/parse-events.h"
29
30 #include "util/thread.h"
31 #include "util/sort.h"
32 #include "util/hist.h"
33
34 static char             const *input_name = "perf.data";
35
36 static char             *dso_list_str, *comm_list_str, *sym_list_str,
37                         *col_width_list_str;
38 static struct strlist   *dso_list, *comm_list, *sym_list;
39
40 static int              force;
41 static bool             use_callchain;
42
43 static int              show_nr_samples;
44
45 static int              show_threads;
46 static struct perf_read_values  show_threads_values;
47
48 static char             default_pretty_printing_style[] = "normal";
49 static char             *pretty_printing_style = default_pretty_printing_style;
50
51 static int              exclude_other = 1;
52
53 static char             callchain_default_opt[] = "fractal,0.5";
54
55 static u64              sample_type;
56
57 struct symbol_conf      symbol_conf;
58
59
60 static size_t
61 callchain__fprintf_left_margin(FILE *fp, int left_margin)
62 {
63         int i;
64         int ret;
65
66         ret = fprintf(fp, "            ");
67
68         for (i = 0; i < left_margin; i++)
69                 ret += fprintf(fp, " ");
70
71         return ret;
72 }
73
74 static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask,
75                                           int left_margin)
76 {
77         int i;
78         size_t ret = 0;
79
80         ret += callchain__fprintf_left_margin(fp, left_margin);
81
82         for (i = 0; i < depth; i++)
83                 if (depth_mask & (1 << i))
84                         ret += fprintf(fp, "|          ");
85                 else
86                         ret += fprintf(fp, "           ");
87
88         ret += fprintf(fp, "\n");
89
90         return ret;
91 }
92 static size_t
93 ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
94                        int depth_mask, int count, u64 total_samples,
95                        int hits, int left_margin)
96 {
97         int i;
98         size_t ret = 0;
99
100         ret += callchain__fprintf_left_margin(fp, left_margin);
101         for (i = 0; i < depth; i++) {
102                 if (depth_mask & (1 << i))
103                         ret += fprintf(fp, "|");
104                 else
105                         ret += fprintf(fp, " ");
106                 if (!count && i == depth - 1) {
107                         double percent;
108
109                         percent = hits * 100.0 / total_samples;
110                         ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
111                 } else
112                         ret += fprintf(fp, "%s", "          ");
113         }
114         if (chain->sym)
115                 ret += fprintf(fp, "%s\n", chain->sym->name);
116         else
117                 ret += fprintf(fp, "%p\n", (void *)(long)chain->ip);
118
119         return ret;
120 }
121
122 static struct symbol *rem_sq_bracket;
123 static struct callchain_list rem_hits;
124
125 static void init_rem_hits(void)
126 {
127         rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
128         if (!rem_sq_bracket) {
129                 fprintf(stderr, "Not enough memory to display remaining hits\n");
130                 return;
131         }
132
133         strcpy(rem_sq_bracket->name, "[...]");
134         rem_hits.sym = rem_sq_bracket;
135 }
136
137 static size_t
138 __callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
139                            u64 total_samples, int depth, int depth_mask,
140                            int left_margin)
141 {
142         struct rb_node *node, *next;
143         struct callchain_node *child;
144         struct callchain_list *chain;
145         int new_depth_mask = depth_mask;
146         u64 new_total;
147         u64 remaining;
148         size_t ret = 0;
149         int i;
150
151         if (callchain_param.mode == CHAIN_GRAPH_REL)
152                 new_total = self->children_hit;
153         else
154                 new_total = total_samples;
155
156         remaining = new_total;
157
158         node = rb_first(&self->rb_root);
159         while (node) {
160                 u64 cumul;
161
162                 child = rb_entry(node, struct callchain_node, rb_node);
163                 cumul = cumul_hits(child);
164                 remaining -= cumul;
165
166                 /*
167                  * The depth mask manages the output of pipes that show
168                  * the depth. We don't want to keep the pipes of the current
169                  * level for the last child of this depth.
170                  * Except if we have remaining filtered hits. They will
171                  * supersede the last child
172                  */
173                 next = rb_next(node);
174                 if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
175                         new_depth_mask &= ~(1 << (depth - 1));
176
177                 /*
178                  * But we keep the older depth mask for the line seperator
179                  * to keep the level link until we reach the last child
180                  */
181                 ret += ipchain__fprintf_graph_line(fp, depth, depth_mask,
182                                                    left_margin);
183                 i = 0;
184                 list_for_each_entry(chain, &child->val, list) {
185                         if (chain->ip >= PERF_CONTEXT_MAX)
186                                 continue;
187                         ret += ipchain__fprintf_graph(fp, chain, depth,
188                                                       new_depth_mask, i++,
189                                                       new_total,
190                                                       cumul,
191                                                       left_margin);
192                 }
193                 ret += __callchain__fprintf_graph(fp, child, new_total,
194                                                   depth + 1,
195                                                   new_depth_mask | (1 << depth),
196                                                   left_margin);
197                 node = next;
198         }
199
200         if (callchain_param.mode == CHAIN_GRAPH_REL &&
201                 remaining && remaining != new_total) {
202
203                 if (!rem_sq_bracket)
204                         return ret;
205
206                 new_depth_mask &= ~(1 << (depth - 1));
207
208                 ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
209                                               new_depth_mask, 0, new_total,
210                                               remaining, left_margin);
211         }
212
213         return ret;
214 }
215
216
217 static size_t
218 callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
219                          u64 total_samples, int left_margin)
220 {
221         struct callchain_list *chain;
222         bool printed = false;
223         int i = 0;
224         int ret = 0;
225
226         list_for_each_entry(chain, &self->val, list) {
227                 if (chain->ip >= PERF_CONTEXT_MAX)
228                         continue;
229
230                 if (!i++ && sort__first_dimension == SORT_SYM)
231                         continue;
232
233                 if (!printed) {
234                         ret += callchain__fprintf_left_margin(fp, left_margin);
235                         ret += fprintf(fp, "|\n");
236                         ret += callchain__fprintf_left_margin(fp, left_margin);
237                         ret += fprintf(fp, "---");
238
239                         left_margin += 3;
240                         printed = true;
241                 } else
242                         ret += callchain__fprintf_left_margin(fp, left_margin);
243
244                 if (chain->sym)
245                         ret += fprintf(fp, " %s\n", chain->sym->name);
246                 else
247                         ret += fprintf(fp, " %p\n", (void *)(long)chain->ip);
248         }
249
250         ret += __callchain__fprintf_graph(fp, self, total_samples, 1, 1, left_margin);
251
252         return ret;
253 }
254
255 static size_t
256 callchain__fprintf_flat(FILE *fp, struct callchain_node *self,
257                         u64 total_samples)
258 {
259         struct callchain_list *chain;
260         size_t ret = 0;
261
262         if (!self)
263                 return 0;
264
265         ret += callchain__fprintf_flat(fp, self->parent, total_samples);
266
267
268         list_for_each_entry(chain, &self->val, list) {
269                 if (chain->ip >= PERF_CONTEXT_MAX)
270                         continue;
271                 if (chain->sym)
272                         ret += fprintf(fp, "                %s\n", chain->sym->name);
273                 else
274                         ret += fprintf(fp, "                %p\n",
275                                         (void *)(long)chain->ip);
276         }
277
278         return ret;
279 }
280
281 static size_t
282 hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
283                               u64 total_samples, int left_margin)
284 {
285         struct rb_node *rb_node;
286         struct callchain_node *chain;
287         size_t ret = 0;
288
289         rb_node = rb_first(&self->sorted_chain);
290         while (rb_node) {
291                 double percent;
292
293                 chain = rb_entry(rb_node, struct callchain_node, rb_node);
294                 percent = chain->hit * 100.0 / total_samples;
295                 switch (callchain_param.mode) {
296                 case CHAIN_FLAT:
297                         ret += percent_color_fprintf(fp, "           %6.2f%%\n",
298                                                      percent);
299                         ret += callchain__fprintf_flat(fp, chain, total_samples);
300                         break;
301                 case CHAIN_GRAPH_ABS: /* Falldown */
302                 case CHAIN_GRAPH_REL:
303                         ret += callchain__fprintf_graph(fp, chain, total_samples,
304                                                         left_margin);
305                 case CHAIN_NONE:
306                 default:
307                         break;
308                 }
309                 ret += fprintf(fp, "\n");
310                 rb_node = rb_next(rb_node);
311         }
312
313         return ret;
314 }
315
316 static size_t hist_entry__fprintf(FILE *fp, struct hist_entry *self,
317                                   struct perf_session *session,
318                                   u64 total_samples)
319 {
320         struct sort_entry *se;
321         size_t ret;
322
323         if (exclude_other && !self->parent)
324                 return 0;
325
326         if (total_samples)
327                 ret = percent_color_fprintf(fp,
328                                             field_sep ? "%.2f" : "   %6.2f%%",
329                                         (self->count * 100.0) / total_samples);
330         else
331                 ret = fprintf(fp, field_sep ? "%lld" : "%12lld ", self->count);
332
333         if (show_nr_samples) {
334                 if (field_sep)
335                         fprintf(fp, "%c%lld", *field_sep, self->count);
336                 else
337                         fprintf(fp, "%11lld", self->count);
338         }
339
340         list_for_each_entry(se, &hist_entry__sort_list, list) {
341                 if (se->elide)
342                         continue;
343
344                 fprintf(fp, "%s", field_sep ?: "  ");
345                 ret += se->print(fp, self, se->width ? *se->width : 0);
346         }
347
348         ret += fprintf(fp, "\n");
349
350         if (session->use_callchain) {
351                 int left_margin = 0;
352
353                 if (sort__first_dimension == SORT_COMM) {
354                         se = list_first_entry(&hist_entry__sort_list, typeof(*se),
355                                                 list);
356                         left_margin = se->width ? *se->width : 0;
357                         left_margin -= thread__comm_len(self->thread);
358                 }
359
360                 hist_entry_callchain__fprintf(fp, self, total_samples,
361                                               left_margin);
362         }
363
364         return ret;
365 }
366
367 /*
368  *
369  */
370
371 static void dso__calc_col_width(struct dso *self)
372 {
373         if (!col_width_list_str && !field_sep &&
374             (!dso_list || strlist__has_entry(dso_list, self->name))) {
375                 unsigned int slen = strlen(self->name);
376                 if (slen > dsos__col_width)
377                         dsos__col_width = slen;
378         }
379
380         self->slen_calculated = 1;
381 }
382
383 static void thread__comm_adjust(struct thread *self)
384 {
385         char *comm = self->comm;
386
387         if (!col_width_list_str && !field_sep &&
388             (!comm_list || strlist__has_entry(comm_list, comm))) {
389                 unsigned int slen = strlen(comm);
390
391                 if (slen > comms__col_width) {
392                         comms__col_width = slen;
393                         threads__col_width = slen + 6;
394                 }
395         }
396 }
397
398 static int thread__set_comm_adjust(struct thread *self, const char *comm)
399 {
400         int ret = thread__set_comm(self, comm);
401
402         if (ret)
403                 return ret;
404
405         thread__comm_adjust(self);
406
407         return 0;
408 }
409
410 static int call__match(struct symbol *sym)
411 {
412         if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
413                 return 1;
414
415         return 0;
416 }
417
418 static struct symbol **resolve_callchain(struct thread *thread,
419                                          struct perf_session *session,
420                                          struct ip_callchain *chain,
421                                          struct symbol **parent)
422 {
423         u8 cpumode = PERF_RECORD_MISC_USER;
424         struct symbol **syms = NULL;
425         unsigned int i;
426
427         if (session->use_callchain) {
428                 syms = calloc(chain->nr, sizeof(*syms));
429                 if (!syms) {
430                         fprintf(stderr, "Can't allocate memory for symbols\n");
431                         exit(-1);
432                 }
433         }
434
435         for (i = 0; i < chain->nr; i++) {
436                 u64 ip = chain->ips[i];
437                 struct addr_location al;
438
439                 if (ip >= PERF_CONTEXT_MAX) {
440                         switch (ip) {
441                         case PERF_CONTEXT_HV:
442                                 cpumode = PERF_RECORD_MISC_HYPERVISOR;  break;
443                         case PERF_CONTEXT_KERNEL:
444                                 cpumode = PERF_RECORD_MISC_KERNEL;      break;
445                         case PERF_CONTEXT_USER:
446                                 cpumode = PERF_RECORD_MISC_USER;        break;
447                         default:
448                                 break;
449                         }
450                         continue;
451                 }
452
453                 thread__find_addr_location(thread, session, cpumode,
454                                            MAP__FUNCTION, ip, &al, NULL);
455                 if (al.sym != NULL) {
456                         if (sort__has_parent && !*parent &&
457                             call__match(al.sym))
458                                 *parent = al.sym;
459                         if (!session->use_callchain)
460                                 break;
461                         syms[i] = al.sym;
462                 }
463         }
464
465         return syms;
466 }
467
468 /*
469  * collect histogram counts
470  */
471
472 static int perf_session__add_hist_entry(struct perf_session *self,
473                                         struct addr_location *al,
474                                         struct ip_callchain *chain, u64 count)
475 {
476         struct symbol **syms = NULL, *parent = NULL;
477         bool hit;
478         struct hist_entry *he;
479
480         if ((sort__has_parent || self->use_callchain) && chain)
481                 syms = resolve_callchain(al->thread, self, chain, &parent);
482
483         he = __perf_session__add_hist_entry(self, al, parent, count, &hit);
484         if (he == NULL)
485                 return -ENOMEM;
486
487         if (hit)
488                 he->count += count;
489
490         if (self->use_callchain) {
491                 if (!hit)
492                         callchain_init(&he->callchain);
493                 append_chain(&he->callchain, chain, syms);
494                 free(syms);
495         }
496
497         return 0;
498 }
499
500 static size_t perf_session__fprintf_hist_entries(struct perf_session *self,
501                                                  u64 total_samples, FILE *fp)
502 {
503         struct hist_entry *pos;
504         struct sort_entry *se;
505         struct rb_node *nd;
506         size_t ret = 0;
507         unsigned int width;
508         char *col_width = col_width_list_str;
509         int raw_printing_style;
510
511         raw_printing_style = !strcmp(pretty_printing_style, "raw");
512
513         init_rem_hits();
514
515         fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
516         fprintf(fp, "#\n");
517
518         fprintf(fp, "# Overhead");
519         if (show_nr_samples) {
520                 if (field_sep)
521                         fprintf(fp, "%cSamples", *field_sep);
522                 else
523                         fputs("  Samples  ", fp);
524         }
525         list_for_each_entry(se, &hist_entry__sort_list, list) {
526                 if (se->elide)
527                         continue;
528                 if (field_sep) {
529                         fprintf(fp, "%c%s", *field_sep, se->header);
530                         continue;
531                 }
532                 width = strlen(se->header);
533                 if (se->width) {
534                         if (col_width_list_str) {
535                                 if (col_width) {
536                                         *se->width = atoi(col_width);
537                                         col_width = strchr(col_width, ',');
538                                         if (col_width)
539                                                 ++col_width;
540                                 }
541                         }
542                         width = *se->width = max(*se->width, width);
543                 }
544                 fprintf(fp, "  %*s", width, se->header);
545         }
546         fprintf(fp, "\n");
547
548         if (field_sep)
549                 goto print_entries;
550
551         fprintf(fp, "# ........");
552         if (show_nr_samples)
553                 fprintf(fp, " ..........");
554         list_for_each_entry(se, &hist_entry__sort_list, list) {
555                 unsigned int i;
556
557                 if (se->elide)
558                         continue;
559
560                 fprintf(fp, "  ");
561                 if (se->width)
562                         width = *se->width;
563                 else
564                         width = strlen(se->header);
565                 for (i = 0; i < width; i++)
566                         fprintf(fp, ".");
567         }
568         fprintf(fp, "\n");
569
570         fprintf(fp, "#\n");
571
572 print_entries:
573         for (nd = rb_first(&self->hists); nd; nd = rb_next(nd)) {
574                 pos = rb_entry(nd, struct hist_entry, rb_node);
575                 ret += hist_entry__fprintf(fp, pos, self, total_samples);
576         }
577
578         if (sort_order == default_sort_order &&
579                         parent_pattern == default_parent_pattern) {
580                 fprintf(fp, "#\n");
581                 fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
582                 fprintf(fp, "#\n");
583         }
584         fprintf(fp, "\n");
585
586         free(rem_sq_bracket);
587
588         if (show_threads)
589                 perf_read_values_display(fp, &show_threads_values,
590                                          raw_printing_style);
591
592         return ret;
593 }
594
595 static int validate_chain(struct ip_callchain *chain, event_t *event)
596 {
597         unsigned int chain_size;
598
599         chain_size = event->header.size;
600         chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
601
602         if (chain->nr*sizeof(u64) > chain_size)
603                 return -1;
604
605         return 0;
606 }
607
608 static int process_sample_event(event_t *event, struct perf_session *session)
609 {
610         struct sample_data data;
611         int cpumode;
612         struct addr_location al;
613         struct thread *thread;
614
615         memset(&data, 0, sizeof(data));
616         data.period = 1;
617
618         event__parse_sample(event, sample_type, &data);
619
620         dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
621                 event->header.misc,
622                 data.pid, data.tid,
623                 (void *)(long)data.ip,
624                 (long long)data.period);
625
626         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
627                 unsigned int i;
628
629                 dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
630
631                 if (validate_chain(data.callchain, event) < 0) {
632                         pr_debug("call-chain problem with event, "
633                                  "skipping it.\n");
634                         return 0;
635                 }
636
637                 if (dump_trace) {
638                         for (i = 0; i < data.callchain->nr; i++)
639                                 dump_printf("..... %2d: %016Lx\n",
640                                             i, data.callchain->ips[i]);
641                 }
642         }
643
644         thread = perf_session__findnew(session, data.pid);
645         if (thread == NULL) {
646                 pr_debug("problem processing %d event, skipping it.\n",
647                         event->header.type);
648                 return -1;
649         }
650
651         dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
652
653         if (comm_list && !strlist__has_entry(comm_list, thread->comm))
654                 return 0;
655
656         cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
657
658         thread__find_addr_location(thread, session, cpumode,
659                                    MAP__FUNCTION, data.ip, &al, NULL);
660         /*
661          * We have to do this here as we may have a dso with no symbol hit that
662          * has a name longer than the ones with symbols sampled.
663          */
664         if (al.map && !sort_dso.elide && !al.map->dso->slen_calculated)
665                 dso__calc_col_width(al.map->dso);
666
667         if (dso_list &&
668             (!al.map || !al.map->dso ||
669              !(strlist__has_entry(dso_list, al.map->dso->short_name) ||
670                (al.map->dso->short_name != al.map->dso->long_name &&
671                 strlist__has_entry(dso_list, al.map->dso->long_name)))))
672                 return 0;
673
674         if (sym_list && al.sym && !strlist__has_entry(sym_list, al.sym->name))
675                 return 0;
676
677         if (perf_session__add_hist_entry(session, &al, data.callchain, data.period)) {
678                 pr_debug("problem incrementing symbol count, skipping event\n");
679                 return -1;
680         }
681
682         event__stats.total += data.period;
683
684         return 0;
685 }
686
687 static int process_comm_event(event_t *event, struct perf_session *session)
688 {
689         struct thread *thread = perf_session__findnew(session, event->comm.pid);
690
691         dump_printf(": %s:%d\n", event->comm.comm, event->comm.pid);
692
693         if (thread == NULL ||
694             thread__set_comm_adjust(thread, event->comm.comm)) {
695                 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
696                 return -1;
697         }
698
699         return 0;
700 }
701
702 static int process_read_event(event_t *event, struct perf_session *session __used)
703 {
704         struct perf_event_attr *attr;
705
706         attr = perf_header__find_attr(event->read.id, &session->header);
707
708         if (show_threads) {
709                 const char *name = attr ? __event_name(attr->type, attr->config)
710                                    : "unknown";
711                 perf_read_values_add_value(&show_threads_values,
712                                            event->read.pid, event->read.tid,
713                                            event->read.id,
714                                            name,
715                                            event->read.value);
716         }
717
718         dump_printf(": %d %d %s %Lu\n", event->read.pid, event->read.tid,
719                     attr ? __event_name(attr->type, attr->config) : "FAIL",
720                     event->read.value);
721
722         return 0;
723 }
724
725 static int sample_type_check(u64 type, struct perf_session *session)
726 {
727         sample_type = type;
728
729         if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
730                 if (sort__has_parent) {
731                         fprintf(stderr, "selected --sort parent, but no"
732                                         " callchain data. Did you call"
733                                         " perf record without -g?\n");
734                         return -1;
735                 }
736                 if (session->use_callchain) {
737                         fprintf(stderr, "selected -g but no callchain data."
738                                         " Did you call perf record without"
739                                         " -g?\n");
740                         return -1;
741                 }
742         } else if (callchain_param.mode != CHAIN_NONE && !session->use_callchain) {
743                         session->use_callchain = true;
744                         if (register_callchain_param(&callchain_param) < 0) {
745                                 fprintf(stderr, "Can't register callchain"
746                                                 " params\n");
747                                 return -1;
748                         }
749         }
750
751         return 0;
752 }
753
754 static struct perf_event_ops event_ops = {
755         .process_sample_event   = process_sample_event,
756         .process_mmap_event     = event__process_mmap,
757         .process_comm_event     = process_comm_event,
758         .process_exit_event     = event__process_task,
759         .process_fork_event     = event__process_task,
760         .process_lost_event     = event__process_lost,
761         .process_read_event     = process_read_event,
762         .sample_type_check      = sample_type_check,
763 };
764
765
766 static int __cmd_report(void)
767 {
768         int ret;
769         struct perf_session *session;
770
771         session = perf_session__new(input_name, O_RDONLY, force, &symbol_conf);
772         if (session == NULL)
773                 return -ENOMEM;
774
775         session->use_callchain = use_callchain;
776
777         if (show_threads)
778                 perf_read_values_init(&show_threads_values);
779
780         ret = perf_session__process_events(session, &event_ops);
781         if (ret)
782                 goto out_delete;
783
784         if (dump_trace) {
785                 event__print_totals();
786                 goto out_delete;
787         }
788
789         if (verbose > 3)
790                 perf_session__fprintf(session, stdout);
791
792         if (verbose > 2)
793                 dsos__fprintf(stdout);
794
795         perf_session__collapse_resort(session);
796         perf_session__output_resort(session, event__stats.total);
797         perf_session__fprintf_hist_entries(session, event__stats.total, stdout);
798
799         if (show_threads)
800                 perf_read_values_destroy(&show_threads_values);
801 out_delete:
802         perf_session__delete(session);
803         return ret;
804 }
805
806 static int
807 parse_callchain_opt(const struct option *opt __used, const char *arg,
808                     int unset __used)
809 {
810         char *tok;
811         char *endptr;
812
813         use_callchain = true;
814
815         if (!arg)
816                 return 0;
817
818         tok = strtok((char *)arg, ",");
819         if (!tok)
820                 return -1;
821
822         /* get the output mode */
823         if (!strncmp(tok, "graph", strlen(arg)))
824                 callchain_param.mode = CHAIN_GRAPH_ABS;
825
826         else if (!strncmp(tok, "flat", strlen(arg)))
827                 callchain_param.mode = CHAIN_FLAT;
828
829         else if (!strncmp(tok, "fractal", strlen(arg)))
830                 callchain_param.mode = CHAIN_GRAPH_REL;
831
832         else if (!strncmp(tok, "none", strlen(arg))) {
833                 callchain_param.mode = CHAIN_NONE;
834                 use_callchain = true;
835
836                 return 0;
837         }
838
839         else
840                 return -1;
841
842         /* get the min percentage */
843         tok = strtok(NULL, ",");
844         if (!tok)
845                 goto setup;
846
847         callchain_param.min_percent = strtod(tok, &endptr);
848         if (tok == endptr)
849                 return -1;
850
851 setup:
852         if (register_callchain_param(&callchain_param) < 0) {
853                 fprintf(stderr, "Can't register callchain params\n");
854                 return -1;
855         }
856         return 0;
857 }
858
859 //static const char * const report_usage[] = {
860 const char * const report_usage[] = {
861         "perf report [<options>] <command>",
862         NULL
863 };
864
865 static const struct option options[] = {
866         OPT_STRING('i', "input", &input_name, "file",
867                     "input file name"),
868         OPT_BOOLEAN('v', "verbose", &verbose,
869                     "be more verbose (show symbol address, etc)"),
870         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
871                     "dump raw trace in ASCII"),
872         OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
873                    "file", "vmlinux pathname"),
874         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
875         OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
876                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
877         OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
878                     "Show a column with the number of samples"),
879         OPT_BOOLEAN('T', "threads", &show_threads,
880                     "Show per-thread event counters"),
881         OPT_STRING(0, "pretty", &pretty_printing_style, "key",
882                    "pretty printing style key: normal raw"),
883         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
884                    "sort by key(s): pid, comm, dso, symbol, parent"),
885         OPT_BOOLEAN('P', "full-paths", &event_ops.full_paths,
886                     "Don't shorten the pathnames taking into account the cwd"),
887         OPT_STRING('p', "parent", &parent_pattern, "regex",
888                    "regex filter to identify parent, see: '--sort parent'"),
889         OPT_BOOLEAN('x', "exclude-other", &exclude_other,
890                     "Only display entries with parent-match"),
891         OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
892                      "Display callchains using output_type and min percent threshold. "
893                      "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
894         OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
895                    "only consider symbols in these dsos"),
896         OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
897                    "only consider symbols in these comms"),
898         OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
899                    "only consider these symbols"),
900         OPT_STRING('w', "column-widths", &col_width_list_str,
901                    "width[,width...]",
902                    "don't try to adjust column width, use these fixed values"),
903         OPT_STRING('t', "field-separator", &field_sep, "separator",
904                    "separator for columns, no spaces will be added between "
905                    "columns '.' is reserved."),
906         OPT_END()
907 };
908
909 static void setup_sorting(void)
910 {
911         char *tmp, *tok, *str = strdup(sort_order);
912
913         for (tok = strtok_r(str, ", ", &tmp);
914                         tok; tok = strtok_r(NULL, ", ", &tmp)) {
915                 if (sort_dimension__add(tok) < 0) {
916                         error("Unknown --sort key: `%s'", tok);
917                         usage_with_options(report_usage, options);
918                 }
919         }
920
921         free(str);
922 }
923
924 static void setup_list(struct strlist **list, const char *list_str,
925                        struct sort_entry *se, const char *list_name,
926                        FILE *fp)
927 {
928         if (list_str) {
929                 *list = strlist__new(true, list_str);
930                 if (!*list) {
931                         fprintf(stderr, "problems parsing %s list\n",
932                                 list_name);
933                         exit(129);
934                 }
935                 if (strlist__nr_entries(*list) == 1) {
936                         fprintf(fp, "# %s: %s\n", list_name,
937                                 strlist__entry(*list, 0)->s);
938                         se->elide = true;
939                 }
940         }
941 }
942
943 int cmd_report(int argc, const char **argv, const char *prefix __used)
944 {
945         if (symbol__init(&symbol_conf) < 0)
946                 return -1;
947
948         argc = parse_options(argc, argv, options, report_usage, 0);
949
950         setup_sorting();
951
952         if (parent_pattern != default_parent_pattern) {
953                 sort_dimension__add("parent");
954                 sort_parent.elide = 1;
955         } else
956                 exclude_other = 0;
957
958         /*
959          * Any (unrecognized) arguments left?
960          */
961         if (argc)
962                 usage_with_options(report_usage, options);
963
964         setup_pager();
965
966         setup_list(&dso_list, dso_list_str, &sort_dso, "dso", stdout);
967         setup_list(&comm_list, comm_list_str, &sort_comm, "comm", stdout);
968         setup_list(&sym_list, sym_list_str, &sort_sym, "symbol", stdout);
969
970         if (field_sep && *field_sep == '.') {
971                 fputs("'.' is the only non valid --field-separator argument\n",
972                       stderr);
973                 exit(129);
974         }
975
976         return __cmd_report();
977 }