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 #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 }; 28 29 session = perf_session__new(&file, 0, NULL); 30 if (session == NULL) 31 return -1; 32 33 evlist__for_each(session->evlist, pos) 34 perf_evsel__fprintf(pos, details, stdout); 35 36 perf_session__delete(session); 37 return 0; 38 } 39 40 int cmd_evlist(int argc, const char **argv, const char *prefix __maybe_unused) 41 { 42 struct perf_attr_details details = { .verbose = false, }; 43 const struct option options[] = { 44 OPT_STRING('i', "input", &input_name, "file", "Input file name"), 45 OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"), 46 OPT_BOOLEAN('v', "verbose", &details.verbose, 47 "Show all event attr details"), 48 OPT_BOOLEAN('g', "group", &details.event_group, 49 "Show event group information"), 50 OPT_END() 51 }; 52 const char * const evlist_usage[] = { 53 "perf evlist [<options>]", 54 NULL 55 }; 56 57 argc = parse_options(argc, argv, options, evlist_usage, 0); 58 if (argc) 59 usage_with_options(evlist_usage, options); 60 61 if (details.event_group && (details.verbose || details.freq)) { 62 pr_err("--group option is not compatible with other options\n"); 63 usage_with_options(evlist_usage, options); 64 } 65 66 return __cmd_evlist(input_name, &details); 67 } 68