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.
10 #include "util/util.h"
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/callchain.h"
18 #include "util/strlist.h"
19 #include "util/values.h"
22 #include "util/debug.h"
23 #include "util/header.h"
24 #include "util/session.h"
26 #include "util/parse-options.h"
27 #include "util/parse-events.h"
29 #include "util/thread.h"
30 #include "util/sort.h"
31 #include "util/hist.h"
33 static char const *input_name = "perf.data";
36 static bool hide_unresolved;
37 static bool dont_use_callchains;
39 static bool show_threads;
40 static struct perf_read_values show_threads_values;
42 static const char default_pretty_printing_style[] = "normal";
43 static const char *pretty_printing_style = default_pretty_printing_style;
45 static char callchain_default_opt[] = "fractal,0.5";
47 static struct hists *perf_session__hists_findnew(struct perf_session *self,
48 u64 event_stream, u32 type,
51 struct rb_node **p = &self->hists_tree.rb_node;
52 struct rb_node *parent = NULL;
53 struct hists *iter, *new;
57 iter = rb_entry(parent, struct hists, rb_node);
58 if (iter->config == config)
62 if (config > iter->config)
68 new = malloc(sizeof(struct hists));
71 memset(new, 0, sizeof(struct hists));
72 new->event_stream = event_stream;
75 rb_link_node(&new->rb_node, parent, p);
76 rb_insert_color(&new->rb_node, &self->hists_tree);
80 static int perf_session__add_hist_entry(struct perf_session *self,
81 struct addr_location *al,
82 struct sample_data *data)
84 struct map_symbol *syms = NULL;
85 struct symbol *parent = NULL;
87 struct hist_entry *he;
89 struct perf_event_attr *attr;
91 if ((sort__has_parent || symbol_conf.use_callchain) && data->callchain) {
92 syms = perf_session__resolve_callchain(self, al->thread,
93 data->callchain, &parent);
98 attr = perf_header__find_attr(data->id, &self->header);
100 hists = perf_session__hists_findnew(self, data->id, attr->type, attr->config);
102 hists = perf_session__hists_findnew(self, data->id, 0, 0);
105 he = __hists__add_entry(hists, al, parent, data->period);
109 if (symbol_conf.use_callchain) {
110 err = append_chain(he->callchain, data->callchain, syms);
115 * Only in the newt browser we are doing integrated annotation,
116 * so we don't allocated the extra space needed because the stdio
117 * code will not use it.
120 err = hist_entry__inc_addr_samples(he, al->addr);
126 static int add_event_total(struct perf_session *session,
127 struct sample_data *data,
128 struct perf_event_attr *attr)
133 hists = perf_session__hists_findnew(session, data->id,
134 attr->type, attr->config);
136 hists = perf_session__hists_findnew(session, data->id, 0, 0);
141 hists->stats.total_period += data->period;
143 * FIXME: add_event_total should be moved from here to
144 * perf_session__process_event so that the proper hist is passed to
145 * the event_op methods.
147 hists__inc_nr_events(hists, PERF_RECORD_SAMPLE);
148 session->hists.stats.total_period += data->period;
152 static int process_sample_event(event_t *event, struct perf_session *session)
154 struct sample_data data = { .period = 1, };
155 struct addr_location al;
156 struct perf_event_attr *attr;
158 event__parse_sample(event, session->sample_type, &data);
160 dump_printf("(IP, %d): %d/%d: %#Lx period: %Ld cpu:%d\n",
161 event->header.misc, data.pid, data.tid, data.ip,
162 data.period, data.cpu);
164 if (session->sample_type & PERF_SAMPLE_CALLCHAIN) {
167 dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
169 if (!ip_callchain__valid(data.callchain, event)) {
170 pr_debug("call-chain problem with event, "
176 for (i = 0; i < data.callchain->nr; i++)
177 dump_printf("..... %2d: %016Lx\n",
178 i, data.callchain->ips[i]);
182 if (event__preprocess_sample(event, session, &al, NULL) < 0) {
183 fprintf(stderr, "problem processing %d event, skipping it.\n",
188 if (al.filtered || (hide_unresolved && al.sym == NULL))
191 if (perf_session__add_hist_entry(session, &al, &data)) {
192 pr_debug("problem incrementing symbol period, skipping event\n");
196 attr = perf_header__find_attr(data.id, &session->header);
198 if (add_event_total(session, &data, attr)) {
199 pr_debug("problem adding event period\n");
206 static int process_read_event(event_t *event, struct perf_session *session __used)
208 struct perf_event_attr *attr;
210 attr = perf_header__find_attr(event->read.id, &session->header);
213 const char *name = attr ? __event_name(attr->type, attr->config)
215 perf_read_values_add_value(&show_threads_values,
216 event->read.pid, event->read.tid,
222 dump_printf(": %d %d %s %Lu\n", event->read.pid, event->read.tid,
223 attr ? __event_name(attr->type, attr->config) : "FAIL",
229 static int perf_session__setup_sample_type(struct perf_session *self)
231 if (!(self->sample_type & PERF_SAMPLE_CALLCHAIN)) {
232 if (sort__has_parent) {
233 fprintf(stderr, "selected --sort parent, but no"
234 " callchain data. Did you call"
235 " perf record without -g?\n");
238 if (symbol_conf.use_callchain) {
239 fprintf(stderr, "selected -g but no callchain data."
240 " Did you call perf record without"
244 } else if (!dont_use_callchains && callchain_param.mode != CHAIN_NONE &&
245 !symbol_conf.use_callchain) {
246 symbol_conf.use_callchain = true;
247 if (register_callchain_param(&callchain_param) < 0) {
248 fprintf(stderr, "Can't register callchain"
257 static struct perf_event_ops event_ops = {
258 .sample = process_sample_event,
259 .mmap = event__process_mmap,
260 .comm = event__process_comm,
261 .exit = event__process_task,
262 .fork = event__process_task,
263 .lost = event__process_lost,
264 .read = process_read_event,
265 .attr = event__process_attr,
266 .event_type = event__process_event_type,
267 .tracing_data = event__process_tracing_data,
268 .build_id = event__process_build_id,
271 extern volatile int session_done;
273 static void sig_handler(int sig __used)
278 static size_t hists__fprintf_nr_sample_events(struct hists *self,
279 const char *evname, FILE *fp)
283 unsigned long nr_events = self->stats.nr_events[PERF_RECORD_SAMPLE];
285 nr_events = convert_unit(nr_events, &unit);
286 ret = fprintf(fp, "# Events: %lu%c", nr_events, unit);
288 ret += fprintf(fp, " %s", evname);
289 return ret + fprintf(fp, "\n#\n");
292 static int hists__tty_browse_tree(struct rb_root *tree, const char *help)
294 struct rb_node *next = rb_first(tree);
297 struct hists *hists = rb_entry(next, struct hists, rb_node);
298 const char *evname = NULL;
300 if (rb_first(&hists->entries) != rb_last(&hists->entries))
301 evname = __event_name(hists->type, hists->config);
303 hists__fprintf_nr_sample_events(hists, evname, stdout);
304 hists__fprintf(hists, NULL, false, stdout);
305 fprintf(stdout, "\n\n");
306 next = rb_next(&hists->rb_node);
309 if (sort_order == default_sort_order &&
310 parent_pattern == default_parent_pattern) {
311 fprintf(stdout, "#\n# (%s)\n#\n", help);
314 bool style = !strcmp(pretty_printing_style, "raw");
315 perf_read_values_display(stdout, &show_threads_values,
317 perf_read_values_destroy(&show_threads_values);
324 static int __cmd_report(void)
327 struct perf_session *session;
328 struct rb_node *next;
329 const char *help = "For a higher level overview, try: perf report --sort comm,dso";
331 signal(SIGINT, sig_handler);
333 session = perf_session__new(input_name, O_RDONLY, force, false);
338 perf_read_values_init(&show_threads_values);
340 ret = perf_session__setup_sample_type(session);
344 ret = perf_session__process_events(session, &event_ops);
349 perf_session__fprintf_nr_events(session, stdout);
354 perf_session__fprintf(session, stdout);
357 perf_session__fprintf_dsos(session, stdout);
359 next = rb_first(&session->hists_tree);
363 hists = rb_entry(next, struct hists, rb_node);
364 hists__collapse_resort(hists);
365 hists__output_resort(hists);
366 next = rb_next(&hists->rb_node);
370 hists__tui_browse_tree(&session->hists_tree, help);
372 hists__tty_browse_tree(&session->hists_tree, help);
375 perf_session__delete(session);
380 parse_callchain_opt(const struct option *opt __used, const char *arg,
390 dont_use_callchains = true;
394 symbol_conf.use_callchain = true;
399 tok = strtok((char *)arg, ",");
403 /* get the output mode */
404 if (!strncmp(tok, "graph", strlen(arg)))
405 callchain_param.mode = CHAIN_GRAPH_ABS;
407 else if (!strncmp(tok, "flat", strlen(arg)))
408 callchain_param.mode = CHAIN_FLAT;
410 else if (!strncmp(tok, "fractal", strlen(arg)))
411 callchain_param.mode = CHAIN_GRAPH_REL;
413 else if (!strncmp(tok, "none", strlen(arg))) {
414 callchain_param.mode = CHAIN_NONE;
415 symbol_conf.use_callchain = false;
423 /* get the min percentage */
424 tok = strtok(NULL, ",");
428 tok2 = strtok(NULL, ",");
429 callchain_param.min_percent = strtod(tok, &endptr);
434 callchain_param.print_limit = strtod(tok2, &endptr);
436 if (register_callchain_param(&callchain_param) < 0) {
437 fprintf(stderr, "Can't register callchain params\n");
443 static const char * const report_usage[] = {
444 "perf report [<options>] <command>",
448 static const struct option options[] = {
449 OPT_STRING('i', "input", &input_name, "file",
451 OPT_INCR('v', "verbose", &verbose,
452 "be more verbose (show symbol address, etc)"),
453 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
454 "dump raw trace in ASCII"),
455 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
456 "file", "vmlinux pathname"),
457 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
458 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
459 "load module symbols - WARNING: use only with -k and LIVE kernel"),
460 OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
461 "Show a column with the number of samples"),
462 OPT_BOOLEAN('T', "threads", &show_threads,
463 "Show per-thread event counters"),
464 OPT_STRING(0, "pretty", &pretty_printing_style, "key",
465 "pretty printing style key: normal raw"),
466 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
467 "sort by key(s): pid, comm, dso, symbol, parent"),
468 OPT_BOOLEAN('P', "full-paths", &symbol_conf.full_paths,
469 "Don't shorten the pathnames taking into account the cwd"),
470 OPT_BOOLEAN(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
471 "Show sample percentage for different cpu modes"),
472 OPT_STRING('p', "parent", &parent_pattern, "regex",
473 "regex filter to identify parent, see: '--sort parent'"),
474 OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
475 "Only display entries with parent-match"),
476 OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
477 "Display callchains using output_type (graph, flat, fractal, or none) and min percent threshold. "
478 "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
479 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
480 "only consider symbols in these dsos"),
481 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
482 "only consider symbols in these comms"),
483 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
484 "only consider these symbols"),
485 OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
487 "don't try to adjust column width, use these fixed values"),
488 OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
489 "separator for columns, no spaces will be added between "
490 "columns '.' is reserved."),
491 OPT_BOOLEAN('U', "hide-unresolved", &hide_unresolved,
492 "Only display entries resolved to a symbol"),
496 int cmd_report(int argc, const char **argv, const char *prefix __used)
498 argc = parse_options(argc, argv, options, report_usage, 0);
500 if (strcmp(input_name, "-") != 0)
503 * Only in the newt browser we are doing integrated annotation,
504 * so don't allocate extra space that won't be used in the stdio
508 symbol_conf.priv_size = sizeof(struct sym_priv);
510 if (symbol__init() < 0)
513 setup_sorting(report_usage, options);
515 if (parent_pattern != default_parent_pattern) {
516 if (sort_dimension__add("parent") < 0)
518 sort_parent.elide = 1;
520 symbol_conf.exclude_other = false;
523 * Any (unrecognized) arguments left?
526 usage_with_options(report_usage, options);
528 sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout);
529 sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout);
530 sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout);
532 return __cmd_report();