1 /* 2 * Builtin evlist command: Show the list of event selectors present 3 * in a perf.data file. 4 */ 5 #include "builtin.h" 6 7 #include "util/util.h" 8 9 #include <linux/list.h> 10 11 #include "perf.h" 12 #include "util/evlist.h" 13 #include "util/evsel.h" 14 #include "util/parse-events.h" 15 #include <subcmd/parse-options.h> 16 #include "util/session.h" 17 #include "util/data.h" 18 #include "util/debug.h" 19 20 static int __cmd_evlist(const char *file_name, struct perf_attr_details *details) 21 { 22 struct perf_session *session; 23 struct perf_evsel *pos; 24 struct perf_data_file file = { 25 .path = file_name, 26 .mode = PERF_DATA_MODE_READ, 27 .force = details->force, 28 }; 29 bool has_tracepoint = false; 30 31 session = perf_session__new(&file, 0, NULL); 32 if (session == NULL) 33 return -1; 34 35 evlist__for_each_entry(session->evlist, pos) { 36 perf_evsel__fprintf(pos, details, stdout); 37 38 if (pos->attr.type == PERF_TYPE_TRACEPOINT) 39 has_tracepoint = true; 40 } 41 42 if (has_tracepoint && !details->trace_fields) 43 printf("# Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events\n"); 44 45 perf_session__delete(session); 46 return 0; 47 } 48 49 int cmd_evlist(int argc, const char **argv, const char *prefix __maybe_unused) 50 { 51 struct perf_attr_details details = { .verbose = false, }; 52 const struct option options[] = { 53 OPT_STRING('i', "input", &input_name, "file", "Input file name"), 54 OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"), 55 OPT_BOOLEAN('v', "verbose", &details.verbose, 56 "Show all event attr details"), 57 OPT_BOOLEAN('g', "group", &details.event_group, 58 "Show event group information"), 59 OPT_BOOLEAN('f', "force", &details.force, "don't complain, do it"), 60 OPT_BOOLEAN(0, "trace-fields", &details.trace_fields, "Show tracepoint fields"), 61 OPT_END() 62 }; 63 const char * const evlist_usage[] = { 64 "perf evlist [<options>]", 65 NULL 66 }; 67 68 argc = parse_options(argc, argv, options, evlist_usage, 0); 69 if (argc) 70 usage_with_options(evlist_usage, options); 71 72 if (details.event_group && (details.verbose || details.freq)) { 73 usage_with_options_msg(evlist_usage, options, 74 "--group option is not compatible with other options\n"); 75 } 76 77 return __cmd_evlist(input_name, &details); 78 } 79