| /* |
| * builtin-annotate.c |
| * |
| * Builtin annotate command: Analyze the perf.data input file, |
| * look up and read DSOs and symbol information and display |
| * a histogram of results, along various sorting keys. |
| */ |
| #include "builtin.h" |
| |
| #include "util/util.h" |
| |
| #include "util/util.h" |
| #include "util/color.h" |
| #include <linux/list.h> |
| #include "util/cache.h" |
| #include <linux/rbtree.h> |
| #include "util/symbol.h" |
| |
| #include "perf.h" |
| #include "util/debug.h" |
| |
| #include "util/annotate.h" |
| #include "util/event.h" |
| #include "util/parse-options.h" |
| #include "util/parse-events.h" |
| #include "util/thread.h" |
| #include "util/sort.h" |
| #include "util/hist.h" |
| #include "util/session.h" |
| |
| static char const *input_name = "perf.data"; |
| |
| static bool force, use_tui, use_stdio; |
| |
| static bool full_paths; |
| |
| static bool print_line; |
| |
| static const char *sym_hist_filter; |
| |
| static int hists__add_entry(struct hists *self, struct addr_location *al) |
| { |
| struct hist_entry *he; |
| |
| if (sym_hist_filter != NULL && |
| (al->sym == NULL || strcmp(sym_hist_filter, al->sym->name) != 0)) { |
| /* We're only interested in a symbol named sym_hist_filter */ |
| if (al->sym != NULL) { |
| rb_erase(&al->sym->rb_node, |
| &al->map->dso->symbols[al->map->type]); |
| symbol__delete(al->sym); |
| } |
| return 0; |
| } |
| |
| he = __hists__add_entry(self, al, NULL, 1); |
| if (he == NULL) |
| return -ENOMEM; |
| |
| if (he->ms.sym != NULL) { |
| /* |
| * All aggregated on the first sym_hist. |
| */ |
| struct annotation *notes = symbol__annotation(he->ms.sym); |
| if (notes->histograms == NULL && symbol__alloc_hist(he->ms.sym, 1) < 0) |
| return -ENOMEM; |
| |
| return hist_entry__inc_addr_samples(he, 0, al->addr); |
| } |
| |
| return 0; |
| } |
| |
| static int process_sample_event(union perf_event *event, |
| struct perf_sample *sample, |
| struct perf_session *session) |
| { |
| struct addr_location al; |
| |
| if (perf_event__preprocess_sample(event, session, &al, sample, NULL) < 0) { |
| pr_warning("problem processing %d event, skipping it.\n", |
| event->header.type); |
| return -1; |
| } |
| |
| if (!al.filtered && hists__add_entry(&session->hists, &al)) { |
| pr_warning("problem incrementing symbol count, " |
| "skipping event\n"); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| static int hist_entry__tty_annotate(struct hist_entry *he, int evidx) |
| { |
| return symbol__tty_annotate(he->ms.sym, he->ms.map, evidx, |
| print_line, full_paths); |
| } |
| |
| static void hists__find_annotations(struct hists *self) |
| { |
| struct rb_node *nd = rb_first(&self->entries), *next; |
| int key = KEY_RIGHT; |
| |
| while (nd) { |
| struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node); |
| struct annotation *notes; |
| |
| if (he->ms.sym == NULL || he->ms.map->dso->annotate_warned) |
| goto find_next; |
| |
| notes = symbol__annotation(he->ms.sym); |
| if (notes->histograms == NULL) { |
| find_next: |
| if (key == KEY_LEFT) |
| nd = rb_prev(nd); |
| else |
| nd = rb_next(nd); |
| continue; |
| } |
| |
| if (use_browser > 0) { |
| /* For now all is aggregated on the first */ |
| key = hist_entry__tui_annotate(he, 0); |
| switch (key) { |
| case KEY_RIGHT: |
| next = rb_next(nd); |
| break; |
| case KEY_LEFT: |
| next = rb_prev(nd); |
| break; |
| default: |
| return; |
| } |
| |
| if (next != NULL) |
| nd = next; |
| } else { |
| /* For now all is aggregated on the first */ |
| hist_entry__tty_annotate(he, 0); |
| nd = rb_next(nd); |
| /* |
| * Since we have a hist_entry per IP for the same |
| * symbol, free he->ms.sym->histogram to signal we already |
| * processed this symbol. |
| */ |
| free(notes->histograms); |
| notes->histograms = NULL; |
| } |
| } |
| } |
| |
| static struct perf_event_ops event_ops = { |
| .sample = process_sample_event, |
| .mmap = perf_event__process_mmap, |
| .comm = perf_event__process_comm, |
| .fork = perf_event__process_task, |
| .ordered_samples = true, |
| .ordering_requires_timestamps = true, |
| }; |
| |
| static int __cmd_annotate(void) |
| { |
| int ret; |
| struct perf_session *session; |
| |
| session = perf_session__new(input_name, O_RDONLY, force, false, &event_ops); |
| if (session == NULL) |
| return -ENOMEM; |
| |
| ret = perf_session__process_events(session, &event_ops); |
| if (ret) |
| goto out_delete; |
| |
| if (dump_trace) { |
| perf_session__fprintf_nr_events(session, stdout); |
| goto out_delete; |
| } |
| |
| if (verbose > 3) |
| perf_session__fprintf(session, stdout); |
| |
| if (verbose > 2) |
| perf_session__fprintf_dsos(session, stdout); |
| |
| hists__collapse_resort(&session->hists); |
| hists__output_resort(&session->hists); |
| hists__find_annotations(&session->hists); |
| out_delete: |
| perf_session__delete(session); |
| |
| return ret; |
| } |
| |
| static const char * const annotate_usage[] = { |
| "perf annotate [<options>] <command>", |
| NULL |
| }; |
| |
| static const struct option options[] = { |
| OPT_STRING('i', "input", &input_name, "file", |
| "input file name"), |
| OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]", |
| "only consider symbols in these dsos"), |
| OPT_STRING('s', "symbol", &sym_hist_filter, "symbol", |
| "symbol to annotate"), |
| OPT_BOOLEAN('f', "force", &force, "don't complain, do it"), |
| OPT_INCR('v', "verbose", &verbose, |
| "be more verbose (show symbol address, etc)"), |
| OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
| "dump raw trace in ASCII"), |
| OPT_BOOLEAN(0, "tui", &use_tui, "Use the TUI interface"), |
| OPT_BOOLEAN(0, "stdio", &use_stdio, "Use the stdio interface"), |
| OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, |
| "file", "vmlinux pathname"), |
| OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules, |
| "load module symbols - WARNING: use only with -k and LIVE kernel"), |
| OPT_BOOLEAN('l', "print-line", &print_line, |
| "print matching source lines (may be slow)"), |
| OPT_BOOLEAN('P', "full-paths", &full_paths, |
| "Don't shorten the displayed pathnames"), |
| OPT_END() |
| }; |
| |
| int cmd_annotate(int argc, const char **argv, const char *prefix __used) |
| { |
| argc = parse_options(argc, argv, options, annotate_usage, 0); |
| |
| if (use_stdio) |
| use_browser = 0; |
| else if (use_tui) |
| use_browser = 1; |
| |
| setup_browser(true); |
| |
| symbol_conf.priv_size = sizeof(struct annotation); |
| symbol_conf.try_vmlinux_path = true; |
| |
| if (symbol__init() < 0) |
| return -1; |
| |
| setup_sorting(annotate_usage, options); |
| |
| if (argc) { |
| /* |
| * Special case: if there's an argument left then assume tha |
| * it's a symbol filter: |
| */ |
| if (argc > 1) |
| usage_with_options(annotate_usage, options); |
| |
| sym_hist_filter = argv[0]; |
| } |
| |
| if (field_sep && *field_sep == '.') { |
| pr_err("'.' is the only non valid --field-separator argument\n"); |
| return -1; |
| } |
| |
| return __cmd_annotate(); |
| } |