static int __perf_evsel__name_array_test(const char *names[], int nr_names) { int i, err; struct perf_evsel *evsel; struct perf_evlist *evlist = perf_evlist__new(); if (evlist == NULL) return -ENOMEM; for (i = 0; i < nr_names; ++i) { err = parse_events(evlist, names[i]); if (err) { pr_debug("failed to parse event '%s', err %d\n", names[i], err); goto out_delete_evlist; } } err = 0; evlist__for_each(evlist, evsel) { if (strcmp(perf_evsel__name(evsel), names[evsel->idx])) { --err; pr_debug("%s != %s\n", perf_evsel__name(evsel), names[evsel->idx]); } } out_delete_evlist: perf_evlist__delete(evlist); return err; }
static int perf_evsel__roundtrip_cache_name_test(void) { char name[128]; int type, op, err = 0, ret = 0, i, idx; struct perf_evsel *evsel; struct perf_evlist *evlist = perf_evlist__new(); if (evlist == NULL) return -ENOMEM; for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { /* skip invalid cache type */ if (!perf_evsel__is_cache_op_valid(type, op)) continue; for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { __perf_evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name)); err = parse_events(evlist, name); if (err) ret = err; } } } idx = 0; evsel = perf_evlist__first(evlist); for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { /* skip invalid cache type */ if (!perf_evsel__is_cache_op_valid(type, op)) continue; for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { __perf_evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name)); if (evsel->idx != idx) continue; ++idx; if (strcmp(perf_evsel__name(evsel), name)) { pr_debug("%s != %s\n", perf_evsel__name(evsel), name); ret = -1; } evsel = perf_evsel__next(evsel); } } } perf_evlist__delete(evlist); return ret; }
static void perf_top__print_mapped_keys(struct perf_top *top) { char *name = NULL; if (top->sym_filter_entry) { struct symbol *sym = top->sym_filter_entry->ms.sym; name = sym->name; } fprintf(stdout, "\nMapped keys:\n"); fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", top->delay_secs); fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", top->print_entries); if (top->evlist->nr_entries > 1) fprintf(stdout, "\t[E] active event counter. \t(%s)\n", perf_evsel__name(top->sym_evsel)); fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", top->count_filter); fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", top->annotation_opts.min_pcnt); fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); fprintf(stdout, "\t[S] stop annotation.\n"); fprintf(stdout, "\t[K] hide kernel symbols. \t(%s)\n", top->hide_kernel_symbols ? "yes" : "no"); fprintf(stdout, "\t[U] hide user symbols. \t(%s)\n", top->hide_user_symbols ? "yes" : "no"); fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", top->zero ? 1 : 0); fprintf(stdout, "\t[qQ] quit.\n"); }
static void python_process_general_event(struct perf_sample *sample, struct perf_evsel *evsel, struct thread *thread, struct addr_location *al) { PyObject *handler, *retval, *t, *dict; static char handler_name[64]; unsigned n = 0; /* * Use the MAX_FIELDS to make the function expandable, though * currently there is only one item for the tuple. */ t = PyTuple_New(MAX_FIELDS); if (!t) Py_FatalError("couldn't create Python tuple"); dict = PyDict_New(); if (!dict) Py_FatalError("couldn't create Python dictionary"); snprintf(handler_name, sizeof(handler_name), "%s", "process_event"); handler = PyDict_GetItemString(main_dict, handler_name); if (!handler || !PyCallable_Check(handler)) goto exit; pydict_set_item_string_decref(dict, "ev_name", PyString_FromString(perf_evsel__name(evsel))); pydict_set_item_string_decref(dict, "attr", PyString_FromStringAndSize( (const char *)&evsel->attr, sizeof(evsel->attr))); pydict_set_item_string_decref(dict, "sample", PyString_FromStringAndSize( (const char *)sample, sizeof(*sample))); pydict_set_item_string_decref(dict, "raw_buf", PyString_FromStringAndSize( (const char *)sample->raw_data, sample->raw_size)); pydict_set_item_string_decref(dict, "comm", PyString_FromString(thread__comm_str(thread))); if (al->map) { pydict_set_item_string_decref(dict, "dso", PyString_FromString(al->map->dso->name)); } if (al->sym) { pydict_set_item_string_decref(dict, "symbol", PyString_FromString(al->sym->name)); } PyTuple_SetItem(t, n++, dict); if (_PyTuple_Resize(&t, n) == -1) Py_FatalError("error resizing Python tuple"); retval = PyObject_CallObject(handler, t); if (retval == NULL) handler_call_die(handler_name); exit: Py_DECREF(dict); Py_DECREF(t); }
void perf_stat_evsel_id_init(struct perf_evsel *evsel) { struct perf_stat_evsel *ps = evsel->priv; int i; /* ps->id is 0 hence PERF_STAT_EVSEL_ID__NONE by default */ for (i = 0; i < PERF_STAT_EVSEL_ID__MAX; i++) { if (!strcmp(perf_evsel__name(evsel), id_str[i])) { ps->id = i; break; } } }
static void perf_top__show_details(struct perf_top *top) { struct hist_entry *he = top->sym_filter_entry; struct perf_evsel *evsel = hists_to_evsel(he->hists); struct annotation *notes; struct symbol *symbol; int more; if (!he) return; symbol = he->ms.sym; notes = symbol__annotation(symbol); pthread_mutex_lock(¬es->lock); symbol__calc_percent(symbol, evsel); if (notes->src == NULL) goto out_unlock; printf("Showing %s for %s\n", perf_evsel__name(top->sym_evsel), symbol->name); printf(" Events Pcnt (>=%d%%)\n", top->annotation_opts.min_pcnt); more = symbol__annotate_printf(symbol, he->ms.map, top->sym_evsel, &top->annotation_opts); if (top->evlist->enabled) { if (top->zero) symbol__annotate_zero_histogram(symbol, top->sym_evsel->idx); else symbol__annotate_decay_histogram(symbol, top->sym_evsel->idx); } if (more != 0) printf("%d lines not displayed, maybe increase display entries [e]\n", more); out_unlock: pthread_mutex_unlock(¬es->lock); }
int perf_evsel__fprintf(struct perf_evsel *evsel, struct perf_attr_details *details, FILE *fp) { bool first = true; int printed = 0; if (details->event_group) { struct perf_evsel *pos; if (!perf_evsel__is_group_leader(evsel)) return 0; if (evsel->nr_members > 1) printed += fprintf(fp, "%s{", evsel->group_name ?: ""); printed += fprintf(fp, "%s", perf_evsel__name(evsel)); for_each_group_member(pos, evsel) printed += fprintf(fp, ",%s", perf_evsel__name(pos)); if (evsel->nr_members > 1) printed += fprintf(fp, "}"); goto out; } printed += fprintf(fp, "%s", perf_evsel__name(evsel)); if (details->verbose) { printed += perf_event_attr__fprintf(fp, &evsel->attr, __print_attr__fprintf, &first); } else if (details->freq) { const char *term = "sample_freq"; if (!evsel->attr.freq) term = "sample_period"; printed += comma_fprintf(fp, &first, " %s=%" PRIu64, term, (u64)evsel->attr.sample_freq); } if (details->trace_fields) { struct format_field *field; if (evsel->attr.type != PERF_TYPE_TRACEPOINT) { printed += comma_fprintf(fp, &first, " (not a tracepoint)"); goto out; } field = evsel->tp_format->format.fields; if (field == NULL) { printed += comma_fprintf(fp, &first, " (no trace field)"); goto out; } printed += comma_fprintf(fp, &first, " trace_fields: %s", field->name); field = field->next; while (field) { printed += comma_fprintf(fp, &first, "%s", field->name); field = field->next; } } out: fputc('\n', fp); return ++printed; }
/* * This test will generate random numbers of calls to some getpid syscalls, * then establish an mmap for a group of events that are created to monitor * the syscalls. * * It will receive the events, using mmap, use its PERF_SAMPLE_ID generated * sample.id field to map back to its respective perf_evsel instance. * * Then it checks if the number of syscalls reported as perf events by * the kernel corresponds to the number of syscalls made. */ int test__basic_mmap(void) { int err = -1; union perf_event *event; struct thread_map *threads; struct cpu_map *cpus; struct perf_evlist *evlist; cpu_set_t cpu_set; const char *syscall_names[] = { "getsid", "getppid", "getpgrp", "getpgid", }; pid_t (*syscalls[])(void) = { (void *)getsid, getppid, getpgrp, (void*)getpgid }; #define nsyscalls ARRAY_SIZE(syscall_names) unsigned int nr_events[nsyscalls], expected_nr_events[nsyscalls], i, j; struct perf_evsel *evsels[nsyscalls], *evsel; threads = thread_map__new(-1, getpid(), UINT_MAX); if (threads == NULL) { pr_debug("thread_map__new\n"); return -1; } cpus = cpu_map__new(NULL); if (cpus == NULL) { pr_debug("cpu_map__new\n"); goto out_free_threads; } CPU_ZERO(&cpu_set); CPU_SET(cpus->map[0], &cpu_set); sched_setaffinity(0, sizeof(cpu_set), &cpu_set); if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { pr_debug("sched_setaffinity() failed on CPU %d: %s ", cpus->map[0], strerror(errno)); goto out_free_cpus; } evlist = perf_evlist__new(); if (evlist == NULL) { pr_debug("perf_evlist__new\n"); goto out_free_cpus; } perf_evlist__set_maps(evlist, cpus, threads); for (i = 0; i < nsyscalls; ++i) { char name[64]; snprintf(name, sizeof(name), "sys_enter_%s", syscall_names[i]); evsels[i] = perf_evsel__newtp("syscalls", name); if (evsels[i] == NULL) { pr_debug("perf_evsel__new\n"); goto out_delete_evlist; } evsels[i]->attr.wakeup_events = 1; perf_evsel__set_sample_id(evsels[i], false); perf_evlist__add(evlist, evsels[i]); if (perf_evsel__open(evsels[i], cpus, threads) < 0) { pr_debug("failed to open counter: %s, " "tweak /proc/sys/kernel/perf_event_paranoid?\n", strerror(errno)); goto out_delete_evlist; } nr_events[i] = 0; expected_nr_events[i] = 1 + rand() % 127; } if (perf_evlist__mmap(evlist, 128, true) < 0) { pr_debug("failed to mmap events: %d (%s)\n", errno, strerror(errno)); goto out_delete_evlist; } for (i = 0; i < nsyscalls; ++i) for (j = 0; j < expected_nr_events[i]; ++j) { int foo = syscalls[i](); ++foo; } while ((event = perf_evlist__mmap_read(evlist, 0)) != NULL) { struct perf_sample sample; if (event->header.type != PERF_RECORD_SAMPLE) { pr_debug("unexpected %s event\n", perf_event__name(event->header.type)); goto out_delete_evlist; } err = perf_evlist__parse_sample(evlist, event, &sample); if (err) { pr_err("Can't parse sample, err = %d\n", err); goto out_delete_evlist; } err = -1; evsel = perf_evlist__id2evsel(evlist, sample.id); if (evsel == NULL) { pr_debug("event with id %" PRIu64 " doesn't map to an evsel\n", sample.id); goto out_delete_evlist; } nr_events[evsel->idx]++; perf_evlist__mmap_consume(evlist, 0); } err = 0; evlist__for_each(evlist, evsel) { if (nr_events[evsel->idx] != expected_nr_events[evsel->idx]) { pr_debug("expected %d %s events, got %d\n", expected_nr_events[evsel->idx], perf_evsel__name(evsel), nr_events[evsel->idx]); err = -1; goto out_delete_evlist; } } out_delete_evlist: perf_evlist__delete(evlist); cpus = NULL; threads = NULL; out_free_cpus: cpu_map__delete(cpus); out_free_threads: thread_map__delete(threads); return err; }
static bool perf_top__handle_keypress(struct perf_top *top, int c) { bool ret = true; if (!perf_top__key_mapped(top, c)) { struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; struct termios save; perf_top__print_mapped_keys(top); fprintf(stdout, "\nEnter selection, or unmapped key to continue: "); fflush(stdout); set_term_quiet_input(&save); poll(&stdin_poll, 1, -1); c = getc(stdin); tcsetattr(0, TCSAFLUSH, &save); if (!perf_top__key_mapped(top, c)) return ret; } switch (c) { case 'd': prompt_integer(&top->delay_secs, "Enter display delay"); if (top->delay_secs < 1) top->delay_secs = 1; break; case 'e': prompt_integer(&top->print_entries, "Enter display entries (lines)"); if (top->print_entries == 0) { perf_top__resize(top); signal(SIGWINCH, winch_sig); } else { signal(SIGWINCH, SIG_DFL); } break; case 'E': if (top->evlist->nr_entries > 1) { /* Select 0 as the default event: */ int counter = 0; fprintf(stderr, "\nAvailable events:"); evlist__for_each_entry(top->evlist, top->sym_evsel) fprintf(stderr, "\n\t%d %s", top->sym_evsel->idx, perf_evsel__name(top->sym_evsel)); prompt_integer(&counter, "Enter details event counter"); if (counter >= top->evlist->nr_entries) { top->sym_evsel = perf_evlist__first(top->evlist); fprintf(stderr, "Sorry, no such event, using %s.\n", perf_evsel__name(top->sym_evsel)); sleep(1); break; } evlist__for_each_entry(top->evlist, top->sym_evsel) if (top->sym_evsel->idx == counter) break; } else top->sym_evsel = perf_evlist__first(top->evlist); break; case 'f': prompt_integer(&top->count_filter, "Enter display event count filter"); break; case 'F': prompt_percent(&top->annotation_opts.min_pcnt, "Enter details display event filter (percent)"); break; case 'K': top->hide_kernel_symbols = !top->hide_kernel_symbols; break; case 'q': case 'Q': printf("exiting.\n"); if (top->dump_symtab) perf_session__fprintf_dsos(top->session, stderr); ret = false; break; case 's': perf_top__prompt_symbol(top, "Enter details symbol"); break; case 'S': if (!top->sym_filter_entry) break; else { struct hist_entry *syme = top->sym_filter_entry; top->sym_filter_entry = NULL; __zero_source_counters(syme); } break; case 'U': top->hide_user_symbols = !top->hide_user_symbols; break; case 'z': top->zero = !top->zero; break; default: break; }