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 "util/parse-options.h" 16 #include "util/session.h" 17 #include "util/data.h" 18 19 static int __cmd_evlist(const char *file_name, struct perf_attr_details *details) 20 { 21 struct perf_session *session; 22 struct perf_evsel *pos; 23 struct perf_data_file file = { 24 .path = file_name, 25 .mode = PERF_DATA_MODE_READ, 26 }; 27 28 session = perf_session__new(&file, 0, NULL); 29 if (session == NULL) 30 return -ENOMEM; 31 32 list_for_each_entry(pos, &session->evlist->entries, node) 33 perf_evsel__fprintf(pos, details, stdout); 34 35 perf_session__delete(session); 36 return 0; 37 } 38 39 int cmd_evlist(int argc, const char **argv, const char *prefix __maybe_unused) 40 { 41 struct perf_attr_details details = { .verbose = false, }; 42 const struct option options[] = { 43 OPT_STRING('i', "input", &input_name, "file", "Input file name"), 44 OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"), 45 OPT_BOOLEAN('v', "verbose", &details.verbose, 46 "Show all event attr details"), 47 OPT_BOOLEAN('g', "group", &details.event_group, 48 "Show event group information"), 49 OPT_END() 50 }; 51 const char * const evlist_usage[] = { 52 "perf evlist [<options>]", 53 NULL 54 }; 55 56 argc = parse_options(argc, argv, options, evlist_usage, 0); 57 if (argc) 58 usage_with_options(evlist_usage, options); 59 60 if (details.event_group && (details.verbose || details.freq)) { 61 pr_err("--group option is not compatible with other options\n"); 62 usage_with_options(evlist_usage, options); 63 } 64 65 return __cmd_evlist(input_name, &details); 66 } 67