perf report: Introduce -n/--show-nr-samples
[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
21 #include "perf.h"
22 #include "util/header.h"
23
24 #include "util/parse-options.h"
25 #include "util/parse-events.h"
26
27 #define SHOW_KERNEL     1
28 #define SHOW_USER       2
29 #define SHOW_HV         4
30
31 static char             const *input_name = "perf.data";
32 static char             *vmlinux = NULL;
33
34 static char             default_sort_order[] = "comm,dso";
35 static char             *sort_order = default_sort_order;
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 static char             *field_sep;
40
41 static int              input;
42 static int              show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
43
44 static int              dump_trace = 0;
45 #define dprintf(x...)   do { if (dump_trace) printf(x); } while (0)
46 #define cdprintf(x...)  do { if (dump_trace) color_fprintf(stdout, color, x); } while (0)
47
48 static int              verbose;
49 #define eprintf(x...)   do { if (verbose) fprintf(stderr, x); } while (0)
50
51 static int              modules;
52
53 static int              full_paths;
54 static int              show_nr_samples;
55
56 static unsigned long    page_size;
57 static unsigned long    mmap_window = 32;
58
59 static char             default_parent_pattern[] = "^sys_|^do_page_fault";
60 static char             *parent_pattern = default_parent_pattern;
61 static regex_t          parent_regex;
62
63 static int              exclude_other = 1;
64
65 static char             callchain_default_opt[] = "fractal,0.5";
66
67 static int              callchain;
68
69 static
70 struct callchain_param  callchain_param = {
71         .mode   = CHAIN_GRAPH_ABS,
72         .min_percent = 0.5
73 };
74
75 static u64              sample_type;
76
77 struct ip_event {
78         struct perf_event_header header;
79         u64 ip;
80         u32 pid, tid;
81         unsigned char __more_data[];
82 };
83
84 struct mmap_event {
85         struct perf_event_header header;
86         u32 pid, tid;
87         u64 start;
88         u64 len;
89         u64 pgoff;
90         char filename[PATH_MAX];
91 };
92
93 struct comm_event {
94         struct perf_event_header header;
95         u32 pid, tid;
96         char comm[16];
97 };
98
99 struct fork_event {
100         struct perf_event_header header;
101         u32 pid, ppid;
102 };
103
104 struct period_event {
105         struct perf_event_header header;
106         u64 time;
107         u64 id;
108         u64 sample_period;
109 };
110
111 struct lost_event {
112         struct perf_event_header header;
113         u64 id;
114         u64 lost;
115 };
116
117 struct read_event {
118         struct perf_event_header header;
119         u32 pid,tid;
120         u64 value;
121         u64 format[3];
122 };
123
124 typedef union event_union {
125         struct perf_event_header        header;
126         struct ip_event                 ip;
127         struct mmap_event               mmap;
128         struct comm_event               comm;
129         struct fork_event               fork;
130         struct period_event             period;
131         struct lost_event               lost;
132         struct read_event               read;
133 } event_t;
134
135 static int repsep_fprintf(FILE *fp, const char *fmt, ...)
136 {
137         int n;
138         va_list ap;
139
140         va_start(ap, fmt);
141         if (!field_sep)
142                 n = vfprintf(fp, fmt, ap);
143         else {
144                 char *bf = NULL;
145                 n = vasprintf(&bf, fmt, ap);
146                 if (n > 0) {
147                         char *sep = bf;
148                         while (1) {
149                                 sep = strchr(sep, *field_sep);
150                                 if (sep == NULL)
151                                         break;
152                                 *sep = '.';
153                         }
154                 }
155                 fputs(bf, fp);
156                 free(bf);
157         }
158         va_end(ap);
159         return n;
160 }
161
162 static LIST_HEAD(dsos);
163 static struct dso *kernel_dso;
164 static struct dso *vdso;
165 static struct dso *hypervisor_dso;
166
167 static void dsos__add(struct dso *dso)
168 {
169         list_add_tail(&dso->node, &dsos);
170 }
171
172 static struct dso *dsos__find(const char *name)
173 {
174         struct dso *pos;
175
176         list_for_each_entry(pos, &dsos, node)
177                 if (strcmp(pos->name, name) == 0)
178                         return pos;
179         return NULL;
180 }
181
182 static struct dso *dsos__findnew(const char *name)
183 {
184         struct dso *dso = dsos__find(name);
185         int nr;
186
187         if (dso)
188                 return dso;
189
190         dso = dso__new(name, 0);
191         if (!dso)
192                 goto out_delete_dso;
193
194         nr = dso__load(dso, NULL, verbose);
195         if (nr < 0) {
196                 eprintf("Failed to open: %s\n", name);
197                 goto out_delete_dso;
198         }
199         if (!nr)
200                 eprintf("No symbols found in: %s, maybe install a debug package?\n", name);
201
202         dsos__add(dso);
203
204         return dso;
205
206 out_delete_dso:
207         dso__delete(dso);
208         return NULL;
209 }
210
211 static void dsos__fprintf(FILE *fp)
212 {
213         struct dso *pos;
214
215         list_for_each_entry(pos, &dsos, node)
216                 dso__fprintf(pos, fp);
217 }
218
219 static struct symbol *vdso__find_symbol(struct dso *dso, u64 ip)
220 {
221         return dso__find_symbol(dso, ip);
222 }
223
224 static int load_kernel(void)
225 {
226         int err;
227
228         kernel_dso = dso__new("[kernel]", 0);
229         if (!kernel_dso)
230                 return -1;
231
232         err = dso__load_kernel(kernel_dso, vmlinux, NULL, verbose, modules);
233         if (err <= 0) {
234                 dso__delete(kernel_dso);
235                 kernel_dso = NULL;
236         } else
237                 dsos__add(kernel_dso);
238
239         vdso = dso__new("[vdso]", 0);
240         if (!vdso)
241                 return -1;
242
243         vdso->find_symbol = vdso__find_symbol;
244
245         dsos__add(vdso);
246
247         hypervisor_dso = dso__new("[hypervisor]", 0);
248         if (!hypervisor_dso)
249                 return -1;
250         dsos__add(hypervisor_dso);
251
252         return err;
253 }
254
255 static char __cwd[PATH_MAX];
256 static char *cwd = __cwd;
257 static int cwdlen;
258
259 static int strcommon(const char *pathname)
260 {
261         int n = 0;
262
263         while (pathname[n] == cwd[n] && n < cwdlen)
264                 ++n;
265
266         return n;
267 }
268
269 struct map {
270         struct list_head node;
271         u64      start;
272         u64      end;
273         u64      pgoff;
274         u64      (*map_ip)(struct map *, u64);
275         struct dso       *dso;
276 };
277
278 static u64 map__map_ip(struct map *map, u64 ip)
279 {
280         return ip - map->start + map->pgoff;
281 }
282
283 static u64 vdso__map_ip(struct map *map __used, u64 ip)
284 {
285         return ip;
286 }
287
288 static inline int is_anon_memory(const char *filename)
289 {
290         return strcmp(filename, "//anon") == 0;
291 }
292
293 static struct map *map__new(struct mmap_event *event)
294 {
295         struct map *self = malloc(sizeof(*self));
296
297         if (self != NULL) {
298                 const char *filename = event->filename;
299                 char newfilename[PATH_MAX];
300                 int anon;
301
302                 if (cwd) {
303                         int n = strcommon(filename);
304
305                         if (n == cwdlen) {
306                                 snprintf(newfilename, sizeof(newfilename),
307                                          ".%s", filename + n);
308                                 filename = newfilename;
309                         }
310                 }
311
312                 anon = is_anon_memory(filename);
313
314                 if (anon) {
315                         snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", event->pid);
316                         filename = newfilename;
317                 }
318
319                 self->start = event->start;
320                 self->end   = event->start + event->len;
321                 self->pgoff = event->pgoff;
322
323                 self->dso = dsos__findnew(filename);
324                 if (self->dso == NULL)
325                         goto out_delete;
326
327                 if (self->dso == vdso || anon)
328                         self->map_ip = vdso__map_ip;
329                 else
330                         self->map_ip = map__map_ip;
331         }
332         return self;
333 out_delete:
334         free(self);
335         return NULL;
336 }
337
338 static struct map *map__clone(struct map *self)
339 {
340         struct map *map = malloc(sizeof(*self));
341
342         if (!map)
343                 return NULL;
344
345         memcpy(map, self, sizeof(*self));
346
347         return map;
348 }
349
350 static int map__overlap(struct map *l, struct map *r)
351 {
352         if (l->start > r->start) {
353                 struct map *t = l;
354                 l = r;
355                 r = t;
356         }
357
358         if (l->end > r->start)
359                 return 1;
360
361         return 0;
362 }
363
364 static size_t map__fprintf(struct map *self, FILE *fp)
365 {
366         return fprintf(fp, " %Lx-%Lx %Lx %s\n",
367                        self->start, self->end, self->pgoff, self->dso->name);
368 }
369
370
371 struct thread {
372         struct rb_node   rb_node;
373         struct list_head maps;
374         pid_t            pid;
375         char             *comm;
376 };
377
378 static struct thread *thread__new(pid_t pid)
379 {
380         struct thread *self = malloc(sizeof(*self));
381
382         if (self != NULL) {
383                 self->pid = pid;
384                 self->comm = malloc(32);
385                 if (self->comm)
386                         snprintf(self->comm, 32, ":%d", self->pid);
387                 INIT_LIST_HEAD(&self->maps);
388         }
389
390         return self;
391 }
392
393 static unsigned int dsos__col_width,
394                     comms__col_width,
395                     threads__col_width;
396
397 static int thread__set_comm(struct thread *self, const char *comm)
398 {
399         if (self->comm)
400                 free(self->comm);
401         self->comm = strdup(comm);
402         if (!self->comm)
403                 return -ENOMEM;
404
405         if (!col_width_list_str && !field_sep &&
406             (!comm_list || strlist__has_entry(comm_list, comm))) {
407                 unsigned int slen = strlen(comm);
408                 if (slen > comms__col_width) {
409                         comms__col_width = slen;
410                         threads__col_width = slen + 6;
411                 }
412         }
413
414         return 0;
415 }
416
417 static size_t thread__fprintf(struct thread *self, FILE *fp)
418 {
419         struct map *pos;
420         size_t ret = fprintf(fp, "Thread %d %s\n", self->pid, self->comm);
421
422         list_for_each_entry(pos, &self->maps, node)
423                 ret += map__fprintf(pos, fp);
424
425         return ret;
426 }
427
428
429 static struct rb_root threads;
430 static struct thread *last_match;
431
432 static struct thread *threads__findnew(pid_t pid)
433 {
434         struct rb_node **p = &threads.rb_node;
435         struct rb_node *parent = NULL;
436         struct thread *th;
437
438         /*
439          * Font-end cache - PID lookups come in blocks,
440          * so most of the time we dont have to look up
441          * the full rbtree:
442          */
443         if (last_match && last_match->pid == pid)
444                 return last_match;
445
446         while (*p != NULL) {
447                 parent = *p;
448                 th = rb_entry(parent, struct thread, rb_node);
449
450                 if (th->pid == pid) {
451                         last_match = th;
452                         return th;
453                 }
454
455                 if (pid < th->pid)
456                         p = &(*p)->rb_left;
457                 else
458                         p = &(*p)->rb_right;
459         }
460
461         th = thread__new(pid);
462         if (th != NULL) {
463                 rb_link_node(&th->rb_node, parent, p);
464                 rb_insert_color(&th->rb_node, &threads);
465                 last_match = th;
466         }
467
468         return th;
469 }
470
471 static void thread__insert_map(struct thread *self, struct map *map)
472 {
473         struct map *pos, *tmp;
474
475         list_for_each_entry_safe(pos, tmp, &self->maps, node) {
476                 if (map__overlap(pos, map)) {
477                         if (verbose >= 2) {
478                                 printf("overlapping maps:\n");
479                                 map__fprintf(map, stdout);
480                                 map__fprintf(pos, stdout);
481                         }
482
483                         if (map->start <= pos->start && map->end > pos->start)
484                                 pos->start = map->end;
485
486                         if (map->end >= pos->end && map->start < pos->end)
487                                 pos->end = map->start;
488
489                         if (verbose >= 2) {
490                                 printf("after collision:\n");
491                                 map__fprintf(pos, stdout);
492                         }
493
494                         if (pos->start >= pos->end) {
495                                 list_del_init(&pos->node);
496                                 free(pos);
497                         }
498                 }
499         }
500
501         list_add_tail(&map->node, &self->maps);
502 }
503
504 static int thread__fork(struct thread *self, struct thread *parent)
505 {
506         struct map *map;
507
508         if (self->comm)
509                 free(self->comm);
510         self->comm = strdup(parent->comm);
511         if (!self->comm)
512                 return -ENOMEM;
513
514         list_for_each_entry(map, &parent->maps, node) {
515                 struct map *new = map__clone(map);
516                 if (!new)
517                         return -ENOMEM;
518                 thread__insert_map(self, new);
519         }
520
521         return 0;
522 }
523
524 static struct map *thread__find_map(struct thread *self, u64 ip)
525 {
526         struct map *pos;
527
528         if (self == NULL)
529                 return NULL;
530
531         list_for_each_entry(pos, &self->maps, node)
532                 if (ip >= pos->start && ip <= pos->end)
533                         return pos;
534
535         return NULL;
536 }
537
538 static size_t threads__fprintf(FILE *fp)
539 {
540         size_t ret = 0;
541         struct rb_node *nd;
542
543         for (nd = rb_first(&threads); nd; nd = rb_next(nd)) {
544                 struct thread *pos = rb_entry(nd, struct thread, rb_node);
545
546                 ret += thread__fprintf(pos, fp);
547         }
548
549         return ret;
550 }
551
552 /*
553  * histogram, sorted on item, collects counts
554  */
555
556 static struct rb_root hist;
557
558 struct hist_entry {
559         struct rb_node          rb_node;
560
561         struct thread           *thread;
562         struct map              *map;
563         struct dso              *dso;
564         struct symbol           *sym;
565         struct symbol           *parent;
566         u64                     ip;
567         char                    level;
568         struct callchain_node   callchain;
569         struct rb_root          sorted_chain;
570
571         u64                     count;
572 };
573
574 /*
575  * configurable sorting bits
576  */
577
578 struct sort_entry {
579         struct list_head list;
580
581         char *header;
582
583         int64_t (*cmp)(struct hist_entry *, struct hist_entry *);
584         int64_t (*collapse)(struct hist_entry *, struct hist_entry *);
585         size_t  (*print)(FILE *fp, struct hist_entry *, unsigned int width);
586         unsigned int *width;
587         bool    elide;
588 };
589
590 static int64_t cmp_null(void *l, void *r)
591 {
592         if (!l && !r)
593                 return 0;
594         else if (!l)
595                 return -1;
596         else
597                 return 1;
598 }
599
600 /* --sort pid */
601
602 static int64_t
603 sort__thread_cmp(struct hist_entry *left, struct hist_entry *right)
604 {
605         return right->thread->pid - left->thread->pid;
606 }
607
608 static size_t
609 sort__thread_print(FILE *fp, struct hist_entry *self, unsigned int width)
610 {
611         return repsep_fprintf(fp, "%*s:%5d", width - 6,
612                               self->thread->comm ?: "", self->thread->pid);
613 }
614
615 static struct sort_entry sort_thread = {
616         .header = "Command:  Pid",
617         .cmp    = sort__thread_cmp,
618         .print  = sort__thread_print,
619         .width  = &threads__col_width,
620 };
621
622 /* --sort comm */
623
624 static int64_t
625 sort__comm_cmp(struct hist_entry *left, struct hist_entry *right)
626 {
627         return right->thread->pid - left->thread->pid;
628 }
629
630 static int64_t
631 sort__comm_collapse(struct hist_entry *left, struct hist_entry *right)
632 {
633         char *comm_l = left->thread->comm;
634         char *comm_r = right->thread->comm;
635
636         if (!comm_l || !comm_r)
637                 return cmp_null(comm_l, comm_r);
638
639         return strcmp(comm_l, comm_r);
640 }
641
642 static size_t
643 sort__comm_print(FILE *fp, struct hist_entry *self, unsigned int width)
644 {
645         return repsep_fprintf(fp, "%*s", width, self->thread->comm);
646 }
647
648 static struct sort_entry sort_comm = {
649         .header         = "Command",
650         .cmp            = sort__comm_cmp,
651         .collapse       = sort__comm_collapse,
652         .print          = sort__comm_print,
653         .width          = &comms__col_width,
654 };
655
656 /* --sort dso */
657
658 static int64_t
659 sort__dso_cmp(struct hist_entry *left, struct hist_entry *right)
660 {
661         struct dso *dso_l = left->dso;
662         struct dso *dso_r = right->dso;
663
664         if (!dso_l || !dso_r)
665                 return cmp_null(dso_l, dso_r);
666
667         return strcmp(dso_l->name, dso_r->name);
668 }
669
670 static size_t
671 sort__dso_print(FILE *fp, struct hist_entry *self, unsigned int width)
672 {
673         if (self->dso)
674                 return repsep_fprintf(fp, "%-*s", width, self->dso->name);
675
676         return repsep_fprintf(fp, "%*llx", width, (u64)self->ip);
677 }
678
679 static struct sort_entry sort_dso = {
680         .header = "Shared Object",
681         .cmp    = sort__dso_cmp,
682         .print  = sort__dso_print,
683         .width  = &dsos__col_width,
684 };
685
686 /* --sort symbol */
687
688 static int64_t
689 sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
690 {
691         u64 ip_l, ip_r;
692
693         if (left->sym == right->sym)
694                 return 0;
695
696         ip_l = left->sym ? left->sym->start : left->ip;
697         ip_r = right->sym ? right->sym->start : right->ip;
698
699         return (int64_t)(ip_r - ip_l);
700 }
701
702 static size_t
703 sort__sym_print(FILE *fp, struct hist_entry *self, unsigned int width __used)
704 {
705         size_t ret = 0;
706
707         if (verbose)
708                 ret += repsep_fprintf(fp, "%#018llx  ", (u64)self->ip);
709
710         ret += repsep_fprintf(fp, "[%c] ", self->level);
711         if (self->sym) {
712                 ret += repsep_fprintf(fp, "%s", self->sym->name);
713
714                 if (self->sym->module)
715                         ret += repsep_fprintf(fp, "\t[%s]",
716                                              self->sym->module->name);
717         } else {
718                 ret += repsep_fprintf(fp, "%#016llx", (u64)self->ip);
719         }
720
721         return ret;
722 }
723
724 static struct sort_entry sort_sym = {
725         .header = "Symbol",
726         .cmp    = sort__sym_cmp,
727         .print  = sort__sym_print,
728 };
729
730 /* --sort parent */
731
732 static int64_t
733 sort__parent_cmp(struct hist_entry *left, struct hist_entry *right)
734 {
735         struct symbol *sym_l = left->parent;
736         struct symbol *sym_r = right->parent;
737
738         if (!sym_l || !sym_r)
739                 return cmp_null(sym_l, sym_r);
740
741         return strcmp(sym_l->name, sym_r->name);
742 }
743
744 static size_t
745 sort__parent_print(FILE *fp, struct hist_entry *self, unsigned int width)
746 {
747         return repsep_fprintf(fp, "%-*s", width,
748                               self->parent ? self->parent->name : "[other]");
749 }
750
751 static unsigned int parent_symbol__col_width;
752
753 static struct sort_entry sort_parent = {
754         .header = "Parent symbol",
755         .cmp    = sort__parent_cmp,
756         .print  = sort__parent_print,
757         .width  = &parent_symbol__col_width,
758 };
759
760 static int sort__need_collapse = 0;
761 static int sort__has_parent = 0;
762
763 struct sort_dimension {
764         char                    *name;
765         struct sort_entry       *entry;
766         int                     taken;
767 };
768
769 static struct sort_dimension sort_dimensions[] = {
770         { .name = "pid",        .entry = &sort_thread,  },
771         { .name = "comm",       .entry = &sort_comm,    },
772         { .name = "dso",        .entry = &sort_dso,     },
773         { .name = "symbol",     .entry = &sort_sym,     },
774         { .name = "parent",     .entry = &sort_parent,  },
775 };
776
777 static LIST_HEAD(hist_entry__sort_list);
778
779 static int sort_dimension__add(char *tok)
780 {
781         unsigned int i;
782
783         for (i = 0; i < ARRAY_SIZE(sort_dimensions); i++) {
784                 struct sort_dimension *sd = &sort_dimensions[i];
785
786                 if (sd->taken)
787                         continue;
788
789                 if (strncasecmp(tok, sd->name, strlen(tok)))
790                         continue;
791
792                 if (sd->entry->collapse)
793                         sort__need_collapse = 1;
794
795                 if (sd->entry == &sort_parent) {
796                         int ret = regcomp(&parent_regex, parent_pattern, REG_EXTENDED);
797                         if (ret) {
798                                 char err[BUFSIZ];
799
800                                 regerror(ret, &parent_regex, err, sizeof(err));
801                                 fprintf(stderr, "Invalid regex: %s\n%s",
802                                         parent_pattern, err);
803                                 exit(-1);
804                         }
805                         sort__has_parent = 1;
806                 }
807
808                 list_add_tail(&sd->entry->list, &hist_entry__sort_list);
809                 sd->taken = 1;
810
811                 return 0;
812         }
813
814         return -ESRCH;
815 }
816
817 static int64_t
818 hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
819 {
820         struct sort_entry *se;
821         int64_t cmp = 0;
822
823         list_for_each_entry(se, &hist_entry__sort_list, list) {
824                 cmp = se->cmp(left, right);
825                 if (cmp)
826                         break;
827         }
828
829         return cmp;
830 }
831
832 static int64_t
833 hist_entry__collapse(struct hist_entry *left, struct hist_entry *right)
834 {
835         struct sort_entry *se;
836         int64_t cmp = 0;
837
838         list_for_each_entry(se, &hist_entry__sort_list, list) {
839                 int64_t (*f)(struct hist_entry *, struct hist_entry *);
840
841                 f = se->collapse ?: se->cmp;
842
843                 cmp = f(left, right);
844                 if (cmp)
845                         break;
846         }
847
848         return cmp;
849 }
850
851 static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask)
852 {
853         int i;
854         size_t ret = 0;
855
856         ret += fprintf(fp, "%s", "                ");
857
858         for (i = 0; i < depth; i++)
859                 if (depth_mask & (1 << i))
860                         ret += fprintf(fp, "|          ");
861                 else
862                         ret += fprintf(fp, "           ");
863
864         ret += fprintf(fp, "\n");
865
866         return ret;
867 }
868 static size_t
869 ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
870                        int depth_mask, int count, u64 total_samples,
871                        int hits)
872 {
873         int i;
874         size_t ret = 0;
875
876         ret += fprintf(fp, "%s", "                ");
877         for (i = 0; i < depth; i++) {
878                 if (depth_mask & (1 << i))
879                         ret += fprintf(fp, "|");
880                 else
881                         ret += fprintf(fp, " ");
882                 if (!count && i == depth - 1) {
883                         double percent;
884
885                         percent = hits * 100.0 / total_samples;
886                         ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
887                 } else
888                         ret += fprintf(fp, "%s", "          ");
889         }
890         if (chain->sym)
891                 ret += fprintf(fp, "%s\n", chain->sym->name);
892         else
893                 ret += fprintf(fp, "%p\n", (void *)(long)chain->ip);
894
895         return ret;
896 }
897
898 static size_t
899 callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
900                         u64 total_samples, int depth, int depth_mask)
901 {
902         struct rb_node *node, *next;
903         struct callchain_node *child;
904         struct callchain_list *chain;
905         int new_depth_mask = depth_mask;
906         u64 new_total;
907         size_t ret = 0;
908         int i;
909
910         if (callchain_param.mode == CHAIN_GRAPH_REL)
911                 new_total = self->cumul_hit;
912         else
913                 new_total = total_samples;
914
915         node = rb_first(&self->rb_root);
916         while (node) {
917                 child = rb_entry(node, struct callchain_node, rb_node);
918
919                 /*
920                  * The depth mask manages the output of pipes that show
921                  * the depth. We don't want to keep the pipes of the current
922                  * level for the last child of this depth
923                  */
924                 next = rb_next(node);
925                 if (!next)
926                         new_depth_mask &= ~(1 << (depth - 1));
927
928                 /*
929                  * But we keep the older depth mask for the line seperator
930                  * to keep the level link until we reach the last child
931                  */
932                 ret += ipchain__fprintf_graph_line(fp, depth, depth_mask);
933                 i = 0;
934                 list_for_each_entry(chain, &child->val, list) {
935                         if (chain->ip >= PERF_CONTEXT_MAX)
936                                 continue;
937                         ret += ipchain__fprintf_graph(fp, chain, depth,
938                                                       new_depth_mask, i++,
939                                                       new_total,
940                                                       child->cumul_hit);
941                 }
942                 ret += callchain__fprintf_graph(fp, child, new_total,
943                                                 depth + 1,
944                                                 new_depth_mask | (1 << depth));
945                 node = next;
946         }
947
948         return ret;
949 }
950
951 static size_t
952 callchain__fprintf_flat(FILE *fp, struct callchain_node *self,
953                         u64 total_samples)
954 {
955         struct callchain_list *chain;
956         size_t ret = 0;
957
958         if (!self)
959                 return 0;
960
961         ret += callchain__fprintf_flat(fp, self->parent, total_samples);
962
963
964         list_for_each_entry(chain, &self->val, list) {
965                 if (chain->ip >= PERF_CONTEXT_MAX)
966                         continue;
967                 if (chain->sym)
968                         ret += fprintf(fp, "                %s\n", chain->sym->name);
969                 else
970                         ret += fprintf(fp, "                %p\n",
971                                         (void *)(long)chain->ip);
972         }
973
974         return ret;
975 }
976
977 static size_t
978 hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
979                               u64 total_samples)
980 {
981         struct rb_node *rb_node;
982         struct callchain_node *chain;
983         size_t ret = 0;
984
985         rb_node = rb_first(&self->sorted_chain);
986         while (rb_node) {
987                 double percent;
988
989                 chain = rb_entry(rb_node, struct callchain_node, rb_node);
990                 percent = chain->hit * 100.0 / total_samples;
991                 switch (callchain_param.mode) {
992                 case CHAIN_FLAT:
993                         ret += percent_color_fprintf(fp, "           %6.2f%%\n",
994                                                      percent);
995                         ret += callchain__fprintf_flat(fp, chain, total_samples);
996                         break;
997                 case CHAIN_GRAPH_ABS: /* Falldown */
998                 case CHAIN_GRAPH_REL:
999                         ret += callchain__fprintf_graph(fp, chain,
1000                                                         total_samples, 1, 1);
1001                 default:
1002                         break;
1003                 }
1004                 ret += fprintf(fp, "\n");
1005                 rb_node = rb_next(rb_node);
1006         }
1007
1008         return ret;
1009 }
1010
1011
1012 static size_t
1013 hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
1014 {
1015         struct sort_entry *se;
1016         size_t ret;
1017
1018         if (exclude_other && !self->parent)
1019                 return 0;
1020
1021         if (total_samples)
1022                 ret = percent_color_fprintf(fp,
1023                                             field_sep ? "%.2f" : "   %6.2f%%",
1024                                         (self->count * 100.0) / total_samples);
1025         else
1026                 ret = fprintf(fp, field_sep ? "%lld" : "%12lld ", self->count);
1027
1028         if (show_nr_samples) {
1029                 if (field_sep)
1030                         fprintf(fp, "%c%lld", *field_sep, self->count);
1031                 else
1032                         fprintf(fp, "%11lld", self->count);
1033         }
1034
1035         list_for_each_entry(se, &hist_entry__sort_list, list) {
1036                 if (se->elide)
1037                         continue;
1038
1039                 fprintf(fp, "%s", field_sep ?: "  ");
1040                 ret += se->print(fp, self, se->width ? *se->width : 0);
1041         }
1042
1043         ret += fprintf(fp, "\n");
1044
1045         if (callchain)
1046                 hist_entry_callchain__fprintf(fp, self, total_samples);
1047
1048         return ret;
1049 }
1050
1051 /*
1052  *
1053  */
1054
1055 static void dso__calc_col_width(struct dso *self)
1056 {
1057         if (!col_width_list_str && !field_sep &&
1058             (!dso_list || strlist__has_entry(dso_list, self->name))) {
1059                 unsigned int slen = strlen(self->name);
1060                 if (slen > dsos__col_width)
1061                         dsos__col_width = slen;
1062         }
1063
1064         self->slen_calculated = 1;
1065 }
1066
1067 static struct symbol *
1068 resolve_symbol(struct thread *thread, struct map **mapp,
1069                struct dso **dsop, u64 *ipp)
1070 {
1071         struct dso *dso = dsop ? *dsop : NULL;
1072         struct map *map = mapp ? *mapp : NULL;
1073         u64 ip = *ipp;
1074
1075         if (!thread)
1076                 return NULL;
1077
1078         if (dso)
1079                 goto got_dso;
1080
1081         if (map)
1082                 goto got_map;
1083
1084         map = thread__find_map(thread, ip);
1085         if (map != NULL) {
1086                 /*
1087                  * We have to do this here as we may have a dso
1088                  * with no symbol hit that has a name longer than
1089                  * the ones with symbols sampled.
1090                  */
1091                 if (!sort_dso.elide && !map->dso->slen_calculated)
1092                         dso__calc_col_width(map->dso);
1093
1094                 if (mapp)
1095                         *mapp = map;
1096 got_map:
1097                 ip = map->map_ip(map, ip);
1098
1099                 dso = map->dso;
1100         } else {
1101                 /*
1102                  * If this is outside of all known maps,
1103                  * and is a negative address, try to look it
1104                  * up in the kernel dso, as it might be a
1105                  * vsyscall (which executes in user-mode):
1106                  */
1107                 if ((long long)ip < 0)
1108                 dso = kernel_dso;
1109         }
1110         dprintf(" ...... dso: %s\n", dso ? dso->name : "<not found>");
1111         dprintf(" ...... map: %Lx -> %Lx\n", *ipp, ip);
1112         *ipp  = ip;
1113
1114         if (dsop)
1115                 *dsop = dso;
1116
1117         if (!dso)
1118                 return NULL;
1119 got_dso:
1120         return dso->find_symbol(dso, ip);
1121 }
1122
1123 static int call__match(struct symbol *sym)
1124 {
1125         if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
1126                 return 1;
1127
1128         return 0;
1129 }
1130
1131 static struct symbol **
1132 resolve_callchain(struct thread *thread, struct map *map __used,
1133                     struct ip_callchain *chain, struct hist_entry *entry)
1134 {
1135         u64 context = PERF_CONTEXT_MAX;
1136         struct symbol **syms = NULL;
1137         unsigned int i;
1138
1139         if (callchain) {
1140                 syms = calloc(chain->nr, sizeof(*syms));
1141                 if (!syms) {
1142                         fprintf(stderr, "Can't allocate memory for symbols\n");
1143                         exit(-1);
1144                 }
1145         }
1146
1147         for (i = 0; i < chain->nr; i++) {
1148                 u64 ip = chain->ips[i];
1149                 struct dso *dso = NULL;
1150                 struct symbol *sym;
1151
1152                 if (ip >= PERF_CONTEXT_MAX) {
1153                         context = ip;
1154                         continue;
1155                 }
1156
1157                 switch (context) {
1158                 case PERF_CONTEXT_HV:
1159                         dso = hypervisor_dso;
1160                         break;
1161                 case PERF_CONTEXT_KERNEL:
1162                         dso = kernel_dso;
1163                         break;
1164                 default:
1165                         break;
1166                 }
1167
1168                 sym = resolve_symbol(thread, NULL, &dso, &ip);
1169
1170                 if (sym) {
1171                         if (sort__has_parent && call__match(sym) &&
1172                             !entry->parent)
1173                                 entry->parent = sym;
1174                         if (!callchain)
1175                                 break;
1176                         syms[i] = sym;
1177                 }
1178         }
1179
1180         return syms;
1181 }
1182
1183 /*
1184  * collect histogram counts
1185  */
1186
1187 static int
1188 hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
1189                 struct symbol *sym, u64 ip, struct ip_callchain *chain,
1190                 char level, u64 count)
1191 {
1192         struct rb_node **p = &hist.rb_node;
1193         struct rb_node *parent = NULL;
1194         struct hist_entry *he;
1195         struct symbol **syms = NULL;
1196         struct hist_entry entry = {
1197                 .thread = thread,
1198                 .map    = map,
1199                 .dso    = dso,
1200                 .sym    = sym,
1201                 .ip     = ip,
1202                 .level  = level,
1203                 .count  = count,
1204                 .parent = NULL,
1205                 .sorted_chain = RB_ROOT
1206         };
1207         int cmp;
1208
1209         if ((sort__has_parent || callchain) && chain)
1210                 syms = resolve_callchain(thread, map, chain, &entry);
1211
1212         while (*p != NULL) {
1213                 parent = *p;
1214                 he = rb_entry(parent, struct hist_entry, rb_node);
1215
1216                 cmp = hist_entry__cmp(&entry, he);
1217
1218                 if (!cmp) {
1219                         he->count += count;
1220                         if (callchain) {
1221                                 append_chain(&he->callchain, chain, syms);
1222                                 free(syms);
1223                         }
1224                         return 0;
1225                 }
1226
1227                 if (cmp < 0)
1228                         p = &(*p)->rb_left;
1229                 else
1230                         p = &(*p)->rb_right;
1231         }
1232
1233         he = malloc(sizeof(*he));
1234         if (!he)
1235                 return -ENOMEM;
1236         *he = entry;
1237         if (callchain) {
1238                 callchain_init(&he->callchain);
1239                 append_chain(&he->callchain, chain, syms);
1240                 free(syms);
1241         }
1242         rb_link_node(&he->rb_node, parent, p);
1243         rb_insert_color(&he->rb_node, &hist);
1244
1245         return 0;
1246 }
1247
1248 static void hist_entry__free(struct hist_entry *he)
1249 {
1250         free(he);
1251 }
1252
1253 /*
1254  * collapse the histogram
1255  */
1256
1257 static struct rb_root collapse_hists;
1258
1259 static void collapse__insert_entry(struct hist_entry *he)
1260 {
1261         struct rb_node **p = &collapse_hists.rb_node;
1262         struct rb_node *parent = NULL;
1263         struct hist_entry *iter;
1264         int64_t cmp;
1265
1266         while (*p != NULL) {
1267                 parent = *p;
1268                 iter = rb_entry(parent, struct hist_entry, rb_node);
1269
1270                 cmp = hist_entry__collapse(iter, he);
1271
1272                 if (!cmp) {
1273                         iter->count += he->count;
1274                         hist_entry__free(he);
1275                         return;
1276                 }
1277
1278                 if (cmp < 0)
1279                         p = &(*p)->rb_left;
1280                 else
1281                         p = &(*p)->rb_right;
1282         }
1283
1284         rb_link_node(&he->rb_node, parent, p);
1285         rb_insert_color(&he->rb_node, &collapse_hists);
1286 }
1287
1288 static void collapse__resort(void)
1289 {
1290         struct rb_node *next;
1291         struct hist_entry *n;
1292
1293         if (!sort__need_collapse)
1294                 return;
1295
1296         next = rb_first(&hist);
1297         while (next) {
1298                 n = rb_entry(next, struct hist_entry, rb_node);
1299                 next = rb_next(&n->rb_node);
1300
1301                 rb_erase(&n->rb_node, &hist);
1302                 collapse__insert_entry(n);
1303         }
1304 }
1305
1306 /*
1307  * reverse the map, sort on count.
1308  */
1309
1310 static struct rb_root output_hists;
1311
1312 static void output__insert_entry(struct hist_entry *he, u64 min_callchain_hits)
1313 {
1314         struct rb_node **p = &output_hists.rb_node;
1315         struct rb_node *parent = NULL;
1316         struct hist_entry *iter;
1317
1318         if (callchain)
1319                 callchain_param.sort(&he->sorted_chain, &he->callchain,
1320                                       min_callchain_hits, &callchain_param);
1321
1322         while (*p != NULL) {
1323                 parent = *p;
1324                 iter = rb_entry(parent, struct hist_entry, rb_node);
1325
1326                 if (he->count > iter->count)
1327                         p = &(*p)->rb_left;
1328                 else
1329                         p = &(*p)->rb_right;
1330         }
1331
1332         rb_link_node(&he->rb_node, parent, p);
1333         rb_insert_color(&he->rb_node, &output_hists);
1334 }
1335
1336 static void output__resort(u64 total_samples)
1337 {
1338         struct rb_node *next;
1339         struct hist_entry *n;
1340         struct rb_root *tree = &hist;
1341         u64 min_callchain_hits;
1342
1343         min_callchain_hits = total_samples * (callchain_param.min_percent / 100);
1344
1345         if (sort__need_collapse)
1346                 tree = &collapse_hists;
1347
1348         next = rb_first(tree);
1349
1350         while (next) {
1351                 n = rb_entry(next, struct hist_entry, rb_node);
1352                 next = rb_next(&n->rb_node);
1353
1354                 rb_erase(&n->rb_node, tree);
1355                 output__insert_entry(n, min_callchain_hits);
1356         }
1357 }
1358
1359 static size_t output__fprintf(FILE *fp, u64 total_samples)
1360 {
1361         struct hist_entry *pos;
1362         struct sort_entry *se;
1363         struct rb_node *nd;
1364         size_t ret = 0;
1365         unsigned int width;
1366         char *col_width = col_width_list_str;
1367
1368         fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
1369         fprintf(fp, "#\n");
1370
1371         fprintf(fp, "# Overhead");
1372         if (show_nr_samples) {
1373                 if (field_sep)
1374                         fprintf(fp, "%cSamples", *field_sep);
1375                 else
1376                         fputs("  Samples  ", fp);
1377         }
1378         list_for_each_entry(se, &hist_entry__sort_list, list) {
1379                 if (se->elide)
1380                         continue;
1381                 if (field_sep) {
1382                         fprintf(fp, "%c%s", *field_sep, se->header);
1383                         continue;
1384                 }
1385                 width = strlen(se->header);
1386                 if (se->width) {
1387                         if (col_width_list_str) {
1388                                 if (col_width) {
1389                                         *se->width = atoi(col_width);
1390                                         col_width = strchr(col_width, ',');
1391                                         if (col_width)
1392                                                 ++col_width;
1393                                 }
1394                         }
1395                         width = *se->width = max(*se->width, width);
1396                 }
1397                 fprintf(fp, "  %*s", width, se->header);
1398         }
1399         fprintf(fp, "\n");
1400
1401         if (field_sep)
1402                 goto print_entries;
1403
1404         fprintf(fp, "# ........");
1405         if (show_nr_samples)
1406                 fprintf(fp, " ..........");
1407         list_for_each_entry(se, &hist_entry__sort_list, list) {
1408                 unsigned int i;
1409
1410                 if (se->elide)
1411                         continue;
1412
1413                 fprintf(fp, "  ");
1414                 if (se->width)
1415                         width = *se->width;
1416                 else
1417                         width = strlen(se->header);
1418                 for (i = 0; i < width; i++)
1419                         fprintf(fp, ".");
1420         }
1421         fprintf(fp, "\n");
1422
1423         fprintf(fp, "#\n");
1424
1425 print_entries:
1426         for (nd = rb_first(&output_hists); nd; nd = rb_next(nd)) {
1427                 pos = rb_entry(nd, struct hist_entry, rb_node);
1428                 ret += hist_entry__fprintf(fp, pos, total_samples);
1429         }
1430
1431         if (sort_order == default_sort_order &&
1432                         parent_pattern == default_parent_pattern) {
1433                 fprintf(fp, "#\n");
1434                 fprintf(fp, "# (For more details, try: perf report --sort comm,dso,symbol)\n");
1435                 fprintf(fp, "#\n");
1436         }
1437         fprintf(fp, "\n");
1438
1439         return ret;
1440 }
1441
1442 static void register_idle_thread(void)
1443 {
1444         struct thread *thread = threads__findnew(0);
1445
1446         if (thread == NULL ||
1447                         thread__set_comm(thread, "[idle]")) {
1448                 fprintf(stderr, "problem inserting idle task.\n");
1449                 exit(-1);
1450         }
1451 }
1452
1453 static unsigned long total = 0,
1454                      total_mmap = 0,
1455                      total_comm = 0,
1456                      total_fork = 0,
1457                      total_unknown = 0,
1458                      total_lost = 0;
1459
1460 static int validate_chain(struct ip_callchain *chain, event_t *event)
1461 {
1462         unsigned int chain_size;
1463
1464         chain_size = event->header.size;
1465         chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
1466
1467         if (chain->nr*sizeof(u64) > chain_size)
1468                 return -1;
1469
1470         return 0;
1471 }
1472
1473 static int
1474 process_sample_event(event_t *event, unsigned long offset, unsigned long head)
1475 {
1476         char level;
1477         int show = 0;
1478         struct dso *dso = NULL;
1479         struct thread *thread = threads__findnew(event->ip.pid);
1480         u64 ip = event->ip.ip;
1481         u64 period = 1;
1482         struct map *map = NULL;
1483         void *more_data = event->ip.__more_data;
1484         struct ip_callchain *chain = NULL;
1485         int cpumode;
1486
1487         if (sample_type & PERF_SAMPLE_PERIOD) {
1488                 period = *(u64 *)more_data;
1489                 more_data += sizeof(u64);
1490         }
1491
1492         dprintf("%p [%p]: PERF_EVENT_SAMPLE (IP, %d): %d: %p period: %Ld\n",
1493                 (void *)(offset + head),
1494                 (void *)(long)(event->header.size),
1495                 event->header.misc,
1496                 event->ip.pid,
1497                 (void *)(long)ip,
1498                 (long long)period);
1499
1500         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
1501                 unsigned int i;
1502
1503                 chain = (void *)more_data;
1504
1505                 dprintf("... chain: nr:%Lu\n", chain->nr);
1506
1507                 if (validate_chain(chain, event) < 0) {
1508                         eprintf("call-chain problem with event, skipping it.\n");
1509                         return 0;
1510                 }
1511
1512                 if (dump_trace) {
1513                         for (i = 0; i < chain->nr; i++)
1514                                 dprintf("..... %2d: %016Lx\n", i, chain->ips[i]);
1515                 }
1516         }
1517
1518         dprintf(" ... thread: %s:%d\n", thread->comm, thread->pid);
1519
1520         if (thread == NULL) {
1521                 eprintf("problem processing %d event, skipping it.\n",
1522                         event->header.type);
1523                 return -1;
1524         }
1525
1526         if (comm_list && !strlist__has_entry(comm_list, thread->comm))
1527                 return 0;
1528
1529         cpumode = event->header.misc & PERF_EVENT_MISC_CPUMODE_MASK;
1530
1531         if (cpumode == PERF_EVENT_MISC_KERNEL) {
1532                 show = SHOW_KERNEL;
1533                 level = 'k';
1534
1535                 dso = kernel_dso;
1536
1537                 dprintf(" ...... dso: %s\n", dso->name);
1538
1539         } else if (cpumode == PERF_EVENT_MISC_USER) {
1540
1541                 show = SHOW_USER;
1542                 level = '.';
1543
1544         } else {
1545                 show = SHOW_HV;
1546                 level = 'H';
1547
1548                 dso = hypervisor_dso;
1549
1550                 dprintf(" ...... dso: [hypervisor]\n");
1551         }
1552
1553         if (show & show_mask) {
1554                 struct symbol *sym = resolve_symbol(thread, &map, &dso, &ip);
1555
1556                 if (dso_list && dso && dso->name && !strlist__has_entry(dso_list, dso->name))
1557                         return 0;
1558
1559                 if (sym_list && sym && !strlist__has_entry(sym_list, sym->name))
1560                         return 0;
1561
1562                 if (hist_entry__add(thread, map, dso, sym, ip, chain, level, period)) {
1563                         eprintf("problem incrementing symbol count, skipping event\n");
1564                         return -1;
1565                 }
1566         }
1567         total += period;
1568
1569         return 0;
1570 }
1571
1572 static int
1573 process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
1574 {
1575         struct thread *thread = threads__findnew(event->mmap.pid);
1576         struct map *map = map__new(&event->mmap);
1577
1578         dprintf("%p [%p]: PERF_EVENT_MMAP %d: [%p(%p) @ %p]: %s\n",
1579                 (void *)(offset + head),
1580                 (void *)(long)(event->header.size),
1581                 event->mmap.pid,
1582                 (void *)(long)event->mmap.start,
1583                 (void *)(long)event->mmap.len,
1584                 (void *)(long)event->mmap.pgoff,
1585                 event->mmap.filename);
1586
1587         if (thread == NULL || map == NULL) {
1588                 dprintf("problem processing PERF_EVENT_MMAP, skipping event.\n");
1589                 return 0;
1590         }
1591
1592         thread__insert_map(thread, map);
1593         total_mmap++;
1594
1595         return 0;
1596 }
1597
1598 static int
1599 process_comm_event(event_t *event, unsigned long offset, unsigned long head)
1600 {
1601         struct thread *thread = threads__findnew(event->comm.pid);
1602
1603         dprintf("%p [%p]: PERF_EVENT_COMM: %s:%d\n",
1604                 (void *)(offset + head),
1605                 (void *)(long)(event->header.size),
1606                 event->comm.comm, event->comm.pid);
1607
1608         if (thread == NULL ||
1609             thread__set_comm(thread, event->comm.comm)) {
1610                 dprintf("problem processing PERF_EVENT_COMM, skipping event.\n");
1611                 return -1;
1612         }
1613         total_comm++;
1614
1615         return 0;
1616 }
1617
1618 static int
1619 process_fork_event(event_t *event, unsigned long offset, unsigned long head)
1620 {
1621         struct thread *thread = threads__findnew(event->fork.pid);
1622         struct thread *parent = threads__findnew(event->fork.ppid);
1623
1624         dprintf("%p [%p]: PERF_EVENT_FORK: %d:%d\n",
1625                 (void *)(offset + head),
1626                 (void *)(long)(event->header.size),
1627                 event->fork.pid, event->fork.ppid);
1628
1629         if (!thread || !parent || thread__fork(thread, parent)) {
1630                 dprintf("problem processing PERF_EVENT_FORK, skipping event.\n");
1631                 return -1;
1632         }
1633         total_fork++;
1634
1635         return 0;
1636 }
1637
1638 static int
1639 process_period_event(event_t *event, unsigned long offset, unsigned long head)
1640 {
1641         dprintf("%p [%p]: PERF_EVENT_PERIOD: time:%Ld, id:%Ld: period:%Ld\n",
1642                 (void *)(offset + head),
1643                 (void *)(long)(event->header.size),
1644                 event->period.time,
1645                 event->period.id,
1646                 event->period.sample_period);
1647
1648         return 0;
1649 }
1650
1651 static int
1652 process_lost_event(event_t *event, unsigned long offset, unsigned long head)
1653 {
1654         dprintf("%p [%p]: PERF_EVENT_LOST: id:%Ld: lost:%Ld\n",
1655                 (void *)(offset + head),
1656                 (void *)(long)(event->header.size),
1657                 event->lost.id,
1658                 event->lost.lost);
1659
1660         total_lost += event->lost.lost;
1661
1662         return 0;
1663 }
1664
1665 static void trace_event(event_t *event)
1666 {
1667         unsigned char *raw_event = (void *)event;
1668         char *color = PERF_COLOR_BLUE;
1669         int i, j;
1670
1671         if (!dump_trace)
1672                 return;
1673
1674         dprintf(".");
1675         cdprintf("\n. ... raw event: size %d bytes\n", event->header.size);
1676
1677         for (i = 0; i < event->header.size; i++) {
1678                 if ((i & 15) == 0) {
1679                         dprintf(".");
1680                         cdprintf("  %04x: ", i);
1681                 }
1682
1683                 cdprintf(" %02x", raw_event[i]);
1684
1685                 if (((i & 15) == 15) || i == event->header.size-1) {
1686                         cdprintf("  ");
1687                         for (j = 0; j < 15-(i & 15); j++)
1688                                 cdprintf("   ");
1689                         for (j = 0; j < (i & 15); j++) {
1690                                 if (isprint(raw_event[i-15+j]))
1691                                         cdprintf("%c", raw_event[i-15+j]);
1692                                 else
1693                                         cdprintf(".");
1694                         }
1695                         cdprintf("\n");
1696                 }
1697         }
1698         dprintf(".\n");
1699 }
1700
1701 static int
1702 process_read_event(event_t *event, unsigned long offset, unsigned long head)
1703 {
1704         dprintf("%p [%p]: PERF_EVENT_READ: %d %d %Lu\n",
1705                         (void *)(offset + head),
1706                         (void *)(long)(event->header.size),
1707                         event->read.pid,
1708                         event->read.tid,
1709                         event->read.value);
1710
1711         return 0;
1712 }
1713
1714 static int
1715 process_event(event_t *event, unsigned long offset, unsigned long head)
1716 {
1717         trace_event(event);
1718
1719         switch (event->header.type) {
1720         case PERF_EVENT_SAMPLE:
1721                 return process_sample_event(event, offset, head);
1722
1723         case PERF_EVENT_MMAP:
1724                 return process_mmap_event(event, offset, head);
1725
1726         case PERF_EVENT_COMM:
1727                 return process_comm_event(event, offset, head);
1728
1729         case PERF_EVENT_FORK:
1730                 return process_fork_event(event, offset, head);
1731
1732         case PERF_EVENT_PERIOD:
1733                 return process_period_event(event, offset, head);
1734
1735         case PERF_EVENT_LOST:
1736                 return process_lost_event(event, offset, head);
1737
1738         case PERF_EVENT_READ:
1739                 return process_read_event(event, offset, head);
1740
1741         /*
1742          * We dont process them right now but they are fine:
1743          */
1744
1745         case PERF_EVENT_THROTTLE:
1746         case PERF_EVENT_UNTHROTTLE:
1747                 return 0;
1748
1749         default:
1750                 return -1;
1751         }
1752
1753         return 0;
1754 }
1755
1756 static struct perf_header       *header;
1757
1758 static u64 perf_header__sample_type(void)
1759 {
1760         u64 sample_type = 0;
1761         int i;
1762
1763         for (i = 0; i < header->attrs; i++) {
1764                 struct perf_header_attr *attr = header->attr[i];
1765
1766                 if (!sample_type)
1767                         sample_type = attr->attr.sample_type;
1768                 else if (sample_type != attr->attr.sample_type)
1769                         die("non matching sample_type");
1770         }
1771
1772         return sample_type;
1773 }
1774
1775 static int __cmd_report(void)
1776 {
1777         int ret, rc = EXIT_FAILURE;
1778         unsigned long offset = 0;
1779         unsigned long head, shift;
1780         struct stat stat;
1781         event_t *event;
1782         uint32_t size;
1783         char *buf;
1784
1785         register_idle_thread();
1786
1787         input = open(input_name, O_RDONLY);
1788         if (input < 0) {
1789                 fprintf(stderr, " failed to open file: %s", input_name);
1790                 if (!strcmp(input_name, "perf.data"))
1791                         fprintf(stderr, "  (try 'perf record' first)");
1792                 fprintf(stderr, "\n");
1793                 exit(-1);
1794         }
1795
1796         ret = fstat(input, &stat);
1797         if (ret < 0) {
1798                 perror("failed to stat file");
1799                 exit(-1);
1800         }
1801
1802         if (!stat.st_size) {
1803                 fprintf(stderr, "zero-sized file, nothing to do!\n");
1804                 exit(0);
1805         }
1806
1807         header = perf_header__read(input);
1808         head = header->data_offset;
1809
1810         sample_type = perf_header__sample_type();
1811
1812         if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
1813                 if (sort__has_parent) {
1814                         fprintf(stderr, "selected --sort parent, but no"
1815                                         " callchain data. Did you call"
1816                                         " perf record without -g?\n");
1817                         exit(-1);
1818                 }
1819                 if (callchain) {
1820                         fprintf(stderr, "selected -c but no callchain data."
1821                                         " Did you call perf record without"
1822                                         " -g?\n");
1823                         exit(-1);
1824                 }
1825         }
1826
1827         if (load_kernel() < 0) {
1828                 perror("failed to load kernel symbols");
1829                 return EXIT_FAILURE;
1830         }
1831
1832         if (!full_paths) {
1833                 if (getcwd(__cwd, sizeof(__cwd)) == NULL) {
1834                         perror("failed to get the current directory");
1835                         return EXIT_FAILURE;
1836                 }
1837                 cwdlen = strlen(cwd);
1838         } else {
1839                 cwd = NULL;
1840                 cwdlen = 0;
1841         }
1842
1843         shift = page_size * (head / page_size);
1844         offset += shift;
1845         head -= shift;
1846
1847 remap:
1848         buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ,
1849                            MAP_SHARED, input, offset);
1850         if (buf == MAP_FAILED) {
1851                 perror("failed to mmap file");
1852                 exit(-1);
1853         }
1854
1855 more:
1856         event = (event_t *)(buf + head);
1857
1858         size = event->header.size;
1859         if (!size)
1860                 size = 8;
1861
1862         if (head + event->header.size >= page_size * mmap_window) {
1863                 int ret;
1864
1865                 shift = page_size * (head / page_size);
1866
1867                 ret = munmap(buf, page_size * mmap_window);
1868                 assert(ret == 0);
1869
1870                 offset += shift;
1871                 head -= shift;
1872                 goto remap;
1873         }
1874
1875         size = event->header.size;
1876
1877         dprintf("\n%p [%p]: event: %d\n",
1878                         (void *)(offset + head),
1879                         (void *)(long)event->header.size,
1880                         event->header.type);
1881
1882         if (!size || process_event(event, offset, head) < 0) {
1883
1884                 dprintf("%p [%p]: skipping unknown header type: %d\n",
1885                         (void *)(offset + head),
1886                         (void *)(long)(event->header.size),
1887                         event->header.type);
1888
1889                 total_unknown++;
1890
1891                 /*
1892                  * assume we lost track of the stream, check alignment, and
1893                  * increment a single u64 in the hope to catch on again 'soon'.
1894                  */
1895
1896                 if (unlikely(head & 7))
1897                         head &= ~7ULL;
1898
1899                 size = 8;
1900         }
1901
1902         head += size;
1903
1904         if (offset + head >= header->data_offset + header->data_size)
1905                 goto done;
1906
1907         if (offset + head < (unsigned long)stat.st_size)
1908                 goto more;
1909
1910 done:
1911         rc = EXIT_SUCCESS;
1912         close(input);
1913
1914         dprintf("      IP events: %10ld\n", total);
1915         dprintf("    mmap events: %10ld\n", total_mmap);
1916         dprintf("    comm events: %10ld\n", total_comm);
1917         dprintf("    fork events: %10ld\n", total_fork);
1918         dprintf("    lost events: %10ld\n", total_lost);
1919         dprintf(" unknown events: %10ld\n", total_unknown);
1920
1921         if (dump_trace)
1922                 return 0;
1923
1924         if (verbose >= 3)
1925                 threads__fprintf(stdout);
1926
1927         if (verbose >= 2)
1928                 dsos__fprintf(stdout);
1929
1930         collapse__resort();
1931         output__resort(total);
1932         output__fprintf(stdout, total);
1933
1934         return rc;
1935 }
1936
1937 static int
1938 parse_callchain_opt(const struct option *opt __used, const char *arg,
1939                     int unset __used)
1940 {
1941         char *tok;
1942         char *endptr;
1943
1944         callchain = 1;
1945
1946         if (!arg)
1947                 return 0;
1948
1949         tok = strtok((char *)arg, ",");
1950         if (!tok)
1951                 return -1;
1952
1953         /* get the output mode */
1954         if (!strncmp(tok, "graph", strlen(arg)))
1955                 callchain_param.mode = CHAIN_GRAPH_ABS;
1956
1957         else if (!strncmp(tok, "flat", strlen(arg)))
1958                 callchain_param.mode = CHAIN_FLAT;
1959
1960         else if (!strncmp(tok, "fractal", strlen(arg)))
1961                 callchain_param.mode = CHAIN_GRAPH_REL;
1962
1963         else
1964                 return -1;
1965
1966         /* get the min percentage */
1967         tok = strtok(NULL, ",");
1968         if (!tok)
1969                 goto setup;
1970
1971         callchain_param.min_percent = strtod(tok, &endptr);
1972         if (tok == endptr)
1973                 return -1;
1974
1975 setup:
1976         if (register_callchain_param(&callchain_param) < 0) {
1977                 fprintf(stderr, "Can't register callchain params\n");
1978                 return -1;
1979         }
1980         return 0;
1981 }
1982
1983 static const char * const report_usage[] = {
1984         "perf report [<options>] <command>",
1985         NULL
1986 };
1987
1988 static const struct option options[] = {
1989         OPT_STRING('i', "input", &input_name, "file",
1990                     "input file name"),
1991         OPT_BOOLEAN('v', "verbose", &verbose,
1992                     "be more verbose (show symbol address, etc)"),
1993         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1994                     "dump raw trace in ASCII"),
1995         OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"),
1996         OPT_BOOLEAN('m', "modules", &modules,
1997                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
1998         OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
1999                     "Show a column with the number of samples"),
2000         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
2001                    "sort by key(s): pid, comm, dso, symbol, parent"),
2002         OPT_BOOLEAN('P', "full-paths", &full_paths,
2003                     "Don't shorten the pathnames taking into account the cwd"),
2004         OPT_STRING('p', "parent", &parent_pattern, "regex",
2005                    "regex filter to identify parent, see: '--sort parent'"),
2006         OPT_BOOLEAN('x', "exclude-other", &exclude_other,
2007                     "Only display entries with parent-match"),
2008         OPT_CALLBACK_DEFAULT('c', "callchain", NULL, "output_type,min_percent",
2009                      "Display callchains using output_type and min percent threshold. "
2010                      "Default: flat,0", &parse_callchain_opt, callchain_default_opt),
2011         OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
2012                    "only consider symbols in these dsos"),
2013         OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
2014                    "only consider symbols in these comms"),
2015         OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
2016                    "only consider these symbols"),
2017         OPT_STRING('w', "column-widths", &col_width_list_str,
2018                    "width[,width...]",
2019                    "don't try to adjust column width, use these fixed values"),
2020         OPT_STRING('t', "field-separator", &field_sep, "separator",
2021                    "separator for columns, no spaces will be added between "
2022                    "columns '.' is reserved."),
2023         OPT_END()
2024 };
2025
2026 static void setup_sorting(void)
2027 {
2028         char *tmp, *tok, *str = strdup(sort_order);
2029
2030         for (tok = strtok_r(str, ", ", &tmp);
2031                         tok; tok = strtok_r(NULL, ", ", &tmp)) {
2032                 if (sort_dimension__add(tok) < 0) {
2033                         error("Unknown --sort key: `%s'", tok);
2034                         usage_with_options(report_usage, options);
2035                 }
2036         }
2037
2038         free(str);
2039 }
2040
2041 static void setup_list(struct strlist **list, const char *list_str,
2042                        struct sort_entry *se, const char *list_name,
2043                        FILE *fp)
2044 {
2045         if (list_str) {
2046                 *list = strlist__new(true, list_str);
2047                 if (!*list) {
2048                         fprintf(stderr, "problems parsing %s list\n",
2049                                 list_name);
2050                         exit(129);
2051                 }
2052                 if (strlist__nr_entries(*list) == 1) {
2053                         fprintf(fp, "# %s: %s\n", list_name,
2054                                 strlist__entry(*list, 0)->s);
2055                         se->elide = true;
2056                 }
2057         }
2058 }
2059
2060 int cmd_report(int argc, const char **argv, const char *prefix __used)
2061 {
2062         symbol__init();
2063
2064         page_size = getpagesize();
2065
2066         argc = parse_options(argc, argv, options, report_usage, 0);
2067
2068         setup_sorting();
2069
2070         if (parent_pattern != default_parent_pattern) {
2071                 sort_dimension__add("parent");
2072                 sort_parent.elide = 1;
2073         } else
2074                 exclude_other = 0;
2075
2076         /*
2077          * Any (unrecognized) arguments left?
2078          */
2079         if (argc)
2080                 usage_with_options(report_usage, options);
2081
2082         setup_pager();
2083
2084         setup_list(&dso_list, dso_list_str, &sort_dso, "dso", stdout);
2085         setup_list(&comm_list, comm_list_str, &sort_comm, "comm", stdout);
2086         setup_list(&sym_list, sym_list_str, &sort_sym, "symbol", stdout);
2087
2088         if (field_sep && *field_sep == '.') {
2089                 fputs("'.' is the only non valid --field-separator argument\n",
2090                       stderr);
2091                 exit(129);
2092         }
2093
2094         return __cmd_report();
2095 }