struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx) { struct perf_evsel *evsel = zalloc(sizeof(*evsel)); if (evsel != NULL) perf_evsel__init(evsel, attr, idx); return evsel; }
struct perf_evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx) { struct perf_evsel *evsel = zalloc(sizeof(*evsel)); if (evsel != NULL) { struct perf_event_attr attr = { .type = PERF_TYPE_TRACEPOINT, .sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD), }; if (asprintf(&evsel->name, "%s:%s", sys, name) < 0) goto out_free; evsel->tp_format = trace_event__tp_format(sys, name); if (evsel->tp_format == NULL) goto out_free; event_attr_init(&attr); attr.config = evsel->tp_format->id; attr.sample_period = 1; perf_evsel__init(evsel, &attr, idx); } return evsel; out_free: zfree(&evsel->name); free(evsel); return NULL; } const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = { "cycles", "instructions", "cache-references", "cache-misses", "branches", "branch-misses", "bus-cycles", "stalled-cycles-frontend", "stalled-cycles-backend", "ref-cycles", }; static const char *__perf_evsel__hw_name(u64 config) { if (config < PERF_COUNT_HW_MAX && perf_evsel__hw_names[config]) return perf_evsel__hw_names[config]; return "unknown-hardware"; } static int perf_evsel__add_modifiers(struct perf_evsel *evsel, char *bf, size_t size) { int colon = 0, r = 0; struct perf_event_attr *attr = &evsel->attr; bool exclude_guest_default = false; #define MOD_PRINT(context, mod) do { \ if (!attr->exclude_##context) { \ if (!colon) colon = ++r; \ r += scnprintf(bf + r, size - r, "%c", mod); \ } } while(0) if (attr->exclude_kernel || attr->exclude_user || attr->exclude_hv) { MOD_PRINT(kernel, 'k'); MOD_PRINT(user, 'u'); MOD_PRINT(hv, 'h'); exclude_guest_default = true; } if (attr->precise_ip) { if (!colon) colon = ++r; r += scnprintf(bf + r, size - r, "%.*s", attr->precise_ip, "ppp"); exclude_guest_default = true; } if (attr->exclude_host || attr->exclude_guest == exclude_guest_default) { MOD_PRINT(host, 'H'); MOD_PRINT(guest, 'G'); } #undef MOD_PRINT if (colon) bf[colon - 1] = ':'; return r; }