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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
18#include "perf.h"
19#include "util/debug.h"
20
21#include "util/event.h"
22#include "util/parse-options.h"
23#include "util/parse-events.h"
24#include "util/thread.h"
25#include "util/sort.h"
26#include "util/hist.h"
27#include "util/session.h"
28
29static char const *input_name = "perf.data";
30
31static bool force, use_tui, use_stdio;
32
33static bool full_paths;
34
35static bool print_line;
36
37static const char *sym_hist_filter;
38
39static int hists__add_entry(struct hists *self, struct addr_location *al)
40{
41 struct hist_entry *he;
42
43 if (sym_hist_filter != NULL &&
44 (al->sym == NULL || strcmp(sym_hist_filter, al->sym->name) != 0)) {
45
46 if (al->sym != NULL) {
47 rb_erase(&al->sym->rb_node,
48 &al->map->dso->symbols[al->map->type]);
49 symbol__delete(al->sym);
50 }
51 return 0;
52 }
53
54 he = __hists__add_entry(self, al, NULL, 1);
55 if (he == NULL)
56 return -ENOMEM;
57
58 return hist_entry__inc_addr_samples(he, al->addr);
59}
60
61static int process_sample_event(event_t *event, struct perf_session *session)
62{
63 struct addr_location al;
64 struct sample_data data;
65
66 if (event__preprocess_sample(event, session, &al, &data, NULL) < 0) {
67 pr_warning("problem processing %d event, skipping it.\n",
68 event->header.type);
69 return -1;
70 }
71
72 if (!al.filtered && hists__add_entry(&session->hists, &al)) {
73 pr_warning("problem incrementing symbol count, "
74 "skipping event\n");
75 return -1;
76 }
77
78 return 0;
79}
80
81static int objdump_line__print(struct objdump_line *self,
82 struct list_head *head,
83 struct hist_entry *he, u64 len)
84{
85 struct symbol *sym = he->ms.sym;
86 static const char *prev_line;
87 static const char *prev_color;
88
89 if (self->offset != -1) {
90 const char *path = NULL;
91 unsigned int hits = 0;
92 double percent = 0.0;
93 const char *color;
94 struct sym_priv *priv = symbol__priv(sym);
95 struct sym_ext *sym_ext = priv->ext;
96 struct sym_hist *h = priv->hist;
97 s64 offset = self->offset;
98 struct objdump_line *next = objdump__get_next_ip_line(head, self);
99
100 while (offset < (s64)len &&
101 (next == NULL || offset < next->offset)) {
102 if (sym_ext) {
103 if (path == NULL)
104 path = sym_ext[offset].path;
105 percent += sym_ext[offset].percent;
106 } else
107 hits += h->ip[offset];
108
109 ++offset;
110 }
111
112 if (sym_ext == NULL && h->sum)
113 percent = 100.0 * hits / h->sum;
114
115 color = get_percent_color(percent);
116
117
118
119
120
121
122 if (path) {
123 if (!prev_line || strcmp(prev_line, path)
124 || color != prev_color) {
125 color_fprintf(stdout, color, " %s", path);
126 prev_line = path;
127 prev_color = color;
128 }
129 }
130
131 color_fprintf(stdout, color, " %7.2f", percent);
132 printf(" : ");
133 color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", self->line);
134 } else {
135 if (!*self->line)
136 printf(" :\n");
137 else
138 printf(" : %s\n", self->line);
139 }
140
141 return 0;
142}
143
144static struct rb_root root_sym_ext;
145
146static void insert_source_line(struct sym_ext *sym_ext)
147{
148 struct sym_ext *iter;
149 struct rb_node **p = &root_sym_ext.rb_node;
150 struct rb_node *parent = NULL;
151
152 while (*p != NULL) {
153 parent = *p;
154 iter = rb_entry(parent, struct sym_ext, node);
155
156 if (sym_ext->percent > iter->percent)
157 p = &(*p)->rb_left;
158 else
159 p = &(*p)->rb_right;
160 }
161
162 rb_link_node(&sym_ext->node, parent, p);
163 rb_insert_color(&sym_ext->node, &root_sym_ext);
164}
165
166static void free_source_line(struct hist_entry *he, int len)
167{
168 struct sym_priv *priv = symbol__priv(he->ms.sym);
169 struct sym_ext *sym_ext = priv->ext;
170 int i;
171
172 if (!sym_ext)
173 return;
174
175 for (i = 0; i < len; i++)
176 free(sym_ext[i].path);
177 free(sym_ext);
178
179 priv->ext = NULL;
180 root_sym_ext = RB_ROOT;
181}
182
183
184static void
185get_source_line(struct hist_entry *he, int len, const char *filename)
186{
187 struct symbol *sym = he->ms.sym;
188 u64 start;
189 int i;
190 char cmd[PATH_MAX * 2];
191 struct sym_ext *sym_ext;
192 struct sym_priv *priv = symbol__priv(sym);
193 struct sym_hist *h = priv->hist;
194
195 if (!h->sum)
196 return;
197
198 sym_ext = priv->ext = calloc(len, sizeof(struct sym_ext));
199 if (!priv->ext)
200 return;
201
202 start = he->ms.map->unmap_ip(he->ms.map, sym->start);
203
204 for (i = 0; i < len; i++) {
205 char *path = NULL;
206 size_t line_len;
207 u64 offset;
208 FILE *fp;
209
210 sym_ext[i].percent = 100.0 * h->ip[i] / h->sum;
211 if (sym_ext[i].percent <= 0.5)
212 continue;
213
214 offset = start + i;
215 sprintf(cmd, "addr2line -e %s %016llx", filename, offset);
216 fp = popen(cmd, "r");
217 if (!fp)
218 continue;
219
220 if (getline(&path, &line_len, fp) < 0 || !line_len)
221 goto next;
222
223 sym_ext[i].path = malloc(sizeof(char) * line_len + 1);
224 if (!sym_ext[i].path)
225 goto next;
226
227 strcpy(sym_ext[i].path, path);
228 insert_source_line(&sym_ext[i]);
229
230 next:
231 pclose(fp);
232 }
233}
234
235static void print_summary(const char *filename)
236{
237 struct sym_ext *sym_ext;
238 struct rb_node *node;
239
240 printf("\nSorted summary for file %s\n", filename);
241 printf("----------------------------------------------\n\n");
242
243 if (RB_EMPTY_ROOT(&root_sym_ext)) {
244 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
245 return;
246 }
247
248 node = rb_first(&root_sym_ext);
249 while (node) {
250 double percent;
251 const char *color;
252 char *path;
253
254 sym_ext = rb_entry(node, struct sym_ext, node);
255 percent = sym_ext->percent;
256 color = get_percent_color(percent);
257 path = sym_ext->path;
258
259 color_fprintf(stdout, color, " %7.2f %s", percent, path);
260 node = rb_next(node);
261 }
262}
263
264static void hist_entry__print_hits(struct hist_entry *self)
265{
266 struct symbol *sym = self->ms.sym;
267 struct sym_priv *priv = symbol__priv(sym);
268 struct sym_hist *h = priv->hist;
269 u64 len = sym->end - sym->start, offset;
270
271 for (offset = 0; offset < len; ++offset)
272 if (h->ip[offset] != 0)
273 printf("%*Lx: %Lu\n", BITS_PER_LONG / 2,
274 sym->start + offset, h->ip[offset]);
275 printf("%*s: %Lu\n", BITS_PER_LONG / 2, "h->sum", h->sum);
276}
277
278static int hist_entry__tty_annotate(struct hist_entry *he)
279{
280 struct map *map = he->ms.map;
281 struct dso *dso = map->dso;
282 struct symbol *sym = he->ms.sym;
283 const char *filename = dso->long_name, *d_filename;
284 u64 len;
285 LIST_HEAD(head);
286 struct objdump_line *pos, *n;
287
288 if (hist_entry__annotate(he, &head, 0) < 0)
289 return -1;
290
291 if (full_paths)
292 d_filename = filename;
293 else
294 d_filename = basename(filename);
295
296 len = sym->end - sym->start;
297
298 if (print_line) {
299 get_source_line(he, len, filename);
300 print_summary(filename);
301 }
302
303 printf("\n\n------------------------------------------------\n");
304 printf(" Percent | Source code & Disassembly of %s\n", d_filename);
305 printf("------------------------------------------------\n");
306
307 if (verbose)
308 hist_entry__print_hits(he);
309
310 list_for_each_entry_safe(pos, n, &head, node) {
311 objdump_line__print(pos, &head, he, len);
312 list_del(&pos->node);
313 objdump_line__free(pos);
314 }
315
316 if (print_line)
317 free_source_line(he, len);
318
319 return 0;
320}
321
322static void hists__find_annotations(struct hists *self)
323{
324 struct rb_node *nd = rb_first(&self->entries), *next;
325 int key = KEY_RIGHT;
326
327 while (nd) {
328 struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
329 struct sym_priv *priv;
330
331 if (he->ms.sym == NULL || he->ms.map->dso->annotate_warned)
332 goto find_next;
333
334 priv = symbol__priv(he->ms.sym);
335 if (priv->hist == NULL) {
336find_next:
337 if (key == KEY_LEFT)
338 nd = rb_prev(nd);
339 else
340 nd = rb_next(nd);
341 continue;
342 }
343
344 if (use_browser > 0) {
345 key = hist_entry__tui_annotate(he);
346 switch (key) {
347 case KEY_RIGHT:
348 next = rb_next(nd);
349 break;
350 case KEY_LEFT:
351 next = rb_prev(nd);
352 break;
353 default:
354 return;
355 }
356
357 if (next != NULL)
358 nd = next;
359 } else {
360 hist_entry__tty_annotate(he);
361 nd = rb_next(nd);
362
363
364
365
366
367 free(priv->hist);
368 priv->hist = NULL;
369 }
370 }
371}
372
373static struct perf_event_ops event_ops = {
374 .sample = process_sample_event,
375 .mmap = event__process_mmap,
376 .comm = event__process_comm,
377 .fork = event__process_task,
378};
379
380static int __cmd_annotate(void)
381{
382 int ret;
383 struct perf_session *session;
384
385 session = perf_session__new(input_name, O_RDONLY, force, false);
386 if (session == NULL)
387 return -ENOMEM;
388
389 ret = perf_session__process_events(session, &event_ops);
390 if (ret)
391 goto out_delete;
392
393 if (dump_trace) {
394 perf_session__fprintf_nr_events(session, stdout);
395 goto out_delete;
396 }
397
398 if (verbose > 3)
399 perf_session__fprintf(session, stdout);
400
401 if (verbose > 2)
402 perf_session__fprintf_dsos(session, stdout);
403
404 hists__collapse_resort(&session->hists);
405 hists__output_resort(&session->hists);
406 hists__find_annotations(&session->hists);
407out_delete:
408 perf_session__delete(session);
409
410 return ret;
411}
412
413static const char * const annotate_usage[] = {
414 "perf annotate [<options>] <command>",
415 NULL
416};
417
418static const struct option options[] = {
419 OPT_STRING('i', "input", &input_name, "file",
420 "input file name"),
421 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
422 "only consider symbols in these dsos"),
423 OPT_STRING('s', "symbol", &sym_hist_filter, "symbol",
424 "symbol to annotate"),
425 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
426 OPT_INCR('v', "verbose", &verbose,
427 "be more verbose (show symbol address, etc)"),
428 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
429 "dump raw trace in ASCII"),
430 OPT_BOOLEAN(0, "tui", &use_tui, "Use the TUI interface"),
431 OPT_BOOLEAN(0, "stdio", &use_stdio, "Use the stdio interface"),
432 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
433 "file", "vmlinux pathname"),
434 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
435 "load module symbols - WARNING: use only with -k and LIVE kernel"),
436 OPT_BOOLEAN('l', "print-line", &print_line,
437 "print matching source lines (may be slow)"),
438 OPT_BOOLEAN('P', "full-paths", &full_paths,
439 "Don't shorten the displayed pathnames"),
440 OPT_END()
441};
442
443int cmd_annotate(int argc, const char **argv, const char *prefix __used)
444{
445 argc = parse_options(argc, argv, options, annotate_usage, 0);
446
447 if (use_stdio)
448 use_browser = 0;
449 else if (use_tui)
450 use_browser = 1;
451
452 setup_browser();
453
454 symbol_conf.priv_size = sizeof(struct sym_priv);
455 symbol_conf.try_vmlinux_path = true;
456
457 if (symbol__init() < 0)
458 return -1;
459
460 setup_sorting(annotate_usage, options);
461
462 if (argc) {
463
464
465
466
467 if (argc > 1)
468 usage_with_options(annotate_usage, options);
469
470 sym_hist_filter = argv[0];
471 }
472
473 if (field_sep && *field_sep == '.') {
474 pr_err("'.' is the only non valid --field-separator argument\n");
475 return -1;
476 }
477
478 return __cmd_annotate();
479}
480
