Root/
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 int force; |
37 | static bool hide_unresolved; |
38 | static bool dont_use_callchains; |
39 | |
40 | static int show_threads; |
41 | static struct perf_read_values show_threads_values; |
42 | |
43 | static char default_pretty_printing_style[] = "normal"; |
44 | static char *pretty_printing_style = default_pretty_printing_style; |
45 | |
46 | static char callchain_default_opt[] = "fractal,0.5"; |
47 | |
48 | static struct event_stat_id *get_stats(struct perf_session *self, |
49 | u64 event_stream, u32 type, u64 config) |
50 | { |
51 | struct rb_node **p = &self->stats_by_id.rb_node; |
52 | struct rb_node *parent = NULL; |
53 | struct event_stat_id *iter, *new; |
54 | |
55 | while (*p != NULL) { |
56 | parent = *p; |
57 | iter = rb_entry(parent, struct event_stat_id, rb_node); |
58 | if (iter->config == config) |
59 | return iter; |
60 | |
61 | |
62 | if (config > iter->config) |
63 | p = &(*p)->rb_right; |
64 | else |
65 | p = &(*p)->rb_left; |
66 | } |
67 | |
68 | new = malloc(sizeof(struct event_stat_id)); |
69 | if (new == NULL) |
70 | return NULL; |
71 | memset(new, 0, sizeof(struct event_stat_id)); |
72 | new->event_stream = event_stream; |
73 | new->config = config; |
74 | new->type = type; |
75 | rb_link_node(&new->rb_node, parent, p); |
76 | rb_insert_color(&new->rb_node, &self->stats_by_id); |
77 | return new; |
78 | } |
79 | |
80 | static int perf_session__add_hist_entry(struct perf_session *self, |
81 | struct addr_location *al, |
82 | struct sample_data *data) |
83 | { |
84 | struct symbol **syms = NULL, *parent = NULL; |
85 | bool hit; |
86 | struct hist_entry *he; |
87 | struct event_stat_id *stats; |
88 | struct perf_event_attr *attr; |
89 | |
90 | if ((sort__has_parent || symbol_conf.use_callchain) && data->callchain) |
91 | syms = perf_session__resolve_callchain(self, al->thread, |
92 | data->callchain, &parent); |
93 | |
94 | attr = perf_header__find_attr(data->id, &self->header); |
95 | if (attr) |
96 | stats = get_stats(self, data->id, attr->type, attr->config); |
97 | else |
98 | stats = get_stats(self, data->id, 0, 0); |
99 | if (stats == NULL) |
100 | return -ENOMEM; |
101 | he = __perf_session__add_hist_entry(&stats->hists, al, parent, |
102 | data->period, &hit); |
103 | if (he == NULL) |
104 | return -ENOMEM; |
105 | |
106 | if (hit) |
107 | he->count += data->period; |
108 | |
109 | if (symbol_conf.use_callchain) { |
110 | if (!hit) |
111 | callchain_init(&he->callchain); |
112 | append_chain(&he->callchain, data->callchain, syms); |
113 | free(syms); |
114 | } |
115 | |
116 | return 0; |
117 | } |
118 | |
119 | static int validate_chain(struct ip_callchain *chain, event_t *event) |
120 | { |
121 | unsigned int chain_size; |
122 | |
123 | chain_size = event->header.size; |
124 | chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event; |
125 | |
126 | if (chain->nr*sizeof(u64) > chain_size) |
127 | return -1; |
128 | |
129 | return 0; |
130 | } |
131 | |
132 | static int add_event_total(struct perf_session *session, |
133 | struct sample_data *data, |
134 | struct perf_event_attr *attr) |
135 | { |
136 | struct event_stat_id *stats; |
137 | |
138 | if (attr) |
139 | stats = get_stats(session, data->id, attr->type, attr->config); |
140 | else |
141 | stats = get_stats(session, data->id, 0, 0); |
142 | |
143 | if (!stats) |
144 | return -ENOMEM; |
145 | |
146 | stats->stats.total += data->period; |
147 | session->events_stats.total += data->period; |
148 | return 0; |
149 | } |
150 | |
151 | static int process_sample_event(event_t *event, struct perf_session *session) |
152 | { |
153 | struct sample_data data = { .period = 1, }; |
154 | struct addr_location al; |
155 | struct perf_event_attr *attr; |
156 | |
157 | event__parse_sample(event, session->sample_type, &data); |
158 | |
159 | dump_printf("(IP, %d): %d/%d: %#Lx period: %Ld\n", event->header.misc, |
160 | data.pid, data.tid, data.ip, data.period); |
161 | |
162 | if (session->sample_type & PERF_SAMPLE_CALLCHAIN) { |
163 | unsigned int i; |
164 | |
165 | dump_printf("... chain: nr:%Lu\n", data.callchain->nr); |
166 | |
167 | if (validate_chain(data.callchain, event) < 0) { |
168 | pr_debug("call-chain problem with event, " |
169 | "skipping it.\n"); |
170 | return 0; |
171 | } |
172 | |
173 | if (dump_trace) { |
174 | for (i = 0; i < data.callchain->nr; i++) |
175 | dump_printf("..... %2d: %016Lx\n", |
176 | i, data.callchain->ips[i]); |
177 | } |
178 | } |
179 | |
180 | if (event__preprocess_sample(event, session, &al, NULL) < 0) { |
181 | fprintf(stderr, "problem processing %d event, skipping it.\n", |
182 | event->header.type); |
183 | return -1; |
184 | } |
185 | |
186 | if (al.filtered || (hide_unresolved && al.sym == NULL)) |
187 | return 0; |
188 | |
189 | if (perf_session__add_hist_entry(session, &al, &data)) { |
190 | pr_debug("problem incrementing symbol count, skipping event\n"); |
191 | return -1; |
192 | } |
193 | |
194 | attr = perf_header__find_attr(data.id, &session->header); |
195 | |
196 | if (add_event_total(session, &data, attr)) { |
197 | pr_debug("problem adding event count\n"); |
198 | return -1; |
199 | } |
200 | |
201 | return 0; |
202 | } |
203 | |
204 | static int process_read_event(event_t *event, struct perf_session *session __used) |
205 | { |
206 | struct perf_event_attr *attr; |
207 | |
208 | attr = perf_header__find_attr(event->read.id, &session->header); |
209 | |
210 | if (show_threads) { |
211 | const char *name = attr ? __event_name(attr->type, attr->config) |
212 | : "unknown"; |
213 | perf_read_values_add_value(&show_threads_values, |
214 | event->read.pid, event->read.tid, |
215 | event->read.id, |
216 | name, |
217 | event->read.value); |
218 | } |
219 | |
220 | dump_printf(": %d %d %s %Lu\n", event->read.pid, event->read.tid, |
221 | attr ? __event_name(attr->type, attr->config) : "FAIL", |
222 | event->read.value); |
223 | |
224 | return 0; |
225 | } |
226 | |
227 | static int perf_session__setup_sample_type(struct perf_session *self) |
228 | { |
229 | if (!(self->sample_type & PERF_SAMPLE_CALLCHAIN)) { |
230 | if (sort__has_parent) { |
231 | fprintf(stderr, "selected --sort parent, but no" |
232 | " callchain data. Did you call" |
233 | " perf record without -g?\n"); |
234 | return -EINVAL; |
235 | } |
236 | if (symbol_conf.use_callchain) { |
237 | fprintf(stderr, "selected -g but no callchain data." |
238 | " Did you call perf record without" |
239 | " -g?\n"); |
240 | return -1; |
241 | } |
242 | } else if (!dont_use_callchains && callchain_param.mode != CHAIN_NONE && |
243 | !symbol_conf.use_callchain) { |
244 | symbol_conf.use_callchain = true; |
245 | if (register_callchain_param(&callchain_param) < 0) { |
246 | fprintf(stderr, "Can't register callchain" |
247 | " params\n"); |
248 | return -EINVAL; |
249 | } |
250 | } |
251 | |
252 | return 0; |
253 | } |
254 | |
255 | static struct perf_event_ops event_ops = { |
256 | .sample = process_sample_event, |
257 | .mmap = event__process_mmap, |
258 | .comm = event__process_comm, |
259 | .exit = event__process_task, |
260 | .fork = event__process_task, |
261 | .lost = event__process_lost, |
262 | .read = process_read_event, |
263 | }; |
264 | |
265 | static int __cmd_report(void) |
266 | { |
267 | int ret = -EINVAL; |
268 | struct perf_session *session; |
269 | struct rb_node *next; |
270 | |
271 | session = perf_session__new(input_name, O_RDONLY, force); |
272 | if (session == NULL) |
273 | return -ENOMEM; |
274 | |
275 | if (show_threads) |
276 | perf_read_values_init(&show_threads_values); |
277 | |
278 | ret = perf_session__setup_sample_type(session); |
279 | if (ret) |
280 | goto out_delete; |
281 | |
282 | ret = perf_session__process_events(session, &event_ops); |
283 | if (ret) |
284 | goto out_delete; |
285 | |
286 | if (dump_trace) { |
287 | event__print_totals(); |
288 | goto out_delete; |
289 | } |
290 | |
291 | if (verbose > 3) |
292 | perf_session__fprintf(session, stdout); |
293 | |
294 | if (verbose > 2) |
295 | dsos__fprintf(stdout); |
296 | |
297 | next = rb_first(&session->stats_by_id); |
298 | while (next) { |
299 | struct event_stat_id *stats; |
300 | |
301 | stats = rb_entry(next, struct event_stat_id, rb_node); |
302 | perf_session__collapse_resort(&stats->hists); |
303 | perf_session__output_resort(&stats->hists, stats->stats.total); |
304 | if (rb_first(&session->stats_by_id) == |
305 | rb_last(&session->stats_by_id)) |
306 | fprintf(stdout, "# Samples: %Ld\n#\n", |
307 | stats->stats.total); |
308 | else |
309 | fprintf(stdout, "# Samples: %Ld %s\n#\n", |
310 | stats->stats.total, |
311 | __event_name(stats->type, stats->config)); |
312 | |
313 | perf_session__fprintf_hists(&stats->hists, NULL, false, stdout, |
314 | stats->stats.total); |
315 | fprintf(stdout, "\n\n"); |
316 | next = rb_next(&stats->rb_node); |
317 | } |
318 | |
319 | if (sort_order == default_sort_order && |
320 | parent_pattern == default_parent_pattern) |
321 | fprintf(stdout, "#\n# (For a higher level overview, try: perf report --sort comm,dso)\n#\n"); |
322 | |
323 | if (show_threads) { |
324 | bool raw_printing_style = !strcmp(pretty_printing_style, "raw"); |
325 | perf_read_values_display(stdout, &show_threads_values, |
326 | raw_printing_style); |
327 | perf_read_values_destroy(&show_threads_values); |
328 | } |
329 | out_delete: |
330 | perf_session__delete(session); |
331 | return ret; |
332 | } |
333 | |
334 | static int |
335 | parse_callchain_opt(const struct option *opt __used, const char *arg, |
336 | int unset) |
337 | { |
338 | char *tok; |
339 | char *endptr; |
340 | |
341 | /* |
342 | * --no-call-graph |
343 | */ |
344 | if (unset) { |
345 | dont_use_callchains = true; |
346 | return 0; |
347 | } |
348 | |
349 | symbol_conf.use_callchain = true; |
350 | |
351 | if (!arg) |
352 | return 0; |
353 | |
354 | tok = strtok((char *)arg, ","); |
355 | if (!tok) |
356 | return -1; |
357 | |
358 | /* get the output mode */ |
359 | if (!strncmp(tok, "graph", strlen(arg))) |
360 | callchain_param.mode = CHAIN_GRAPH_ABS; |
361 | |
362 | else if (!strncmp(tok, "flat", strlen(arg))) |
363 | callchain_param.mode = CHAIN_FLAT; |
364 | |
365 | else if (!strncmp(tok, "fractal", strlen(arg))) |
366 | callchain_param.mode = CHAIN_GRAPH_REL; |
367 | |
368 | else if (!strncmp(tok, "none", strlen(arg))) { |
369 | callchain_param.mode = CHAIN_NONE; |
370 | symbol_conf.use_callchain = false; |
371 | |
372 | return 0; |
373 | } |
374 | |
375 | else |
376 | return -1; |
377 | |
378 | /* get the min percentage */ |
379 | tok = strtok(NULL, ","); |
380 | if (!tok) |
381 | goto setup; |
382 | |
383 | callchain_param.min_percent = strtod(tok, &endptr); |
384 | if (tok == endptr) |
385 | return -1; |
386 | |
387 | setup: |
388 | if (register_callchain_param(&callchain_param) < 0) { |
389 | fprintf(stderr, "Can't register callchain params\n"); |
390 | return -1; |
391 | } |
392 | return 0; |
393 | } |
394 | |
395 | static const char * const report_usage[] = { |
396 | "perf report [<options>] <command>", |
397 | NULL |
398 | }; |
399 | |
400 | static const struct option options[] = { |
401 | OPT_STRING('i', "input", &input_name, "file", |
402 | "input file name"), |
403 | OPT_BOOLEAN('v', "verbose", &verbose, |
404 | "be more verbose (show symbol address, etc)"), |
405 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
406 | "dump raw trace in ASCII"), |
407 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, |
408 | "file", "vmlinux pathname"), |
409 | OPT_BOOLEAN('f', "force", &force, "don't complain, do it"), |
410 | OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules, |
411 | "load module symbols - WARNING: use only with -k and LIVE kernel"), |
412 | OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples, |
413 | "Show a column with the number of samples"), |
414 | OPT_BOOLEAN('T', "threads", &show_threads, |
415 | "Show per-thread event counters"), |
416 | OPT_STRING(0, "pretty", &pretty_printing_style, "key", |
417 | "pretty printing style key: normal raw"), |
418 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", |
419 | "sort by key(s): pid, comm, dso, symbol, parent"), |
420 | OPT_BOOLEAN('P', "full-paths", &symbol_conf.full_paths, |
421 | "Don't shorten the pathnames taking into account the cwd"), |
422 | OPT_STRING('p', "parent", &parent_pattern, "regex", |
423 | "regex filter to identify parent, see: '--sort parent'"), |
424 | OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other, |
425 | "Only display entries with parent-match"), |
426 | OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent", |
427 | "Display callchains using output_type and min percent threshold. " |
428 | "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt), |
429 | OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]", |
430 | "only consider symbols in these dsos"), |
431 | OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]", |
432 | "only consider symbols in these comms"), |
433 | OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]", |
434 | "only consider these symbols"), |
435 | OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str, |
436 | "width[,width...]", |
437 | "don't try to adjust column width, use these fixed values"), |
438 | OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator", |
439 | "separator for columns, no spaces will be added between " |
440 | "columns '.' is reserved."), |
441 | OPT_BOOLEAN('U', "hide-unresolved", &hide_unresolved, |
442 | "Only display entries resolved to a symbol"), |
443 | OPT_END() |
444 | }; |
445 | |
446 | int cmd_report(int argc, const char **argv, const char *prefix __used) |
447 | { |
448 | argc = parse_options(argc, argv, options, report_usage, 0); |
449 | |
450 | setup_pager(); |
451 | |
452 | if (symbol__init() < 0) |
453 | return -1; |
454 | |
455 | setup_sorting(report_usage, options); |
456 | |
457 | if (parent_pattern != default_parent_pattern) { |
458 | sort_dimension__add("parent"); |
459 | sort_parent.elide = 1; |
460 | } else |
461 | symbol_conf.exclude_other = false; |
462 | |
463 | /* |
464 | * Any (unrecognized) arguments left? |
465 | */ |
466 | if (argc) |
467 | usage_with_options(report_usage, options); |
468 | |
469 | sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout); |
470 | sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout); |
471 | sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout); |
472 | |
473 | return __cmd_report(); |
474 | } |
475 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9