1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Builtin evlist command: Show the list of event selectors present 4 * in a perf.data file. 5 */ 6 #include "builtin.h" 7 8 #include "util/util.h" 9 10 #include <linux/list.h> 11 12 #include "perf.h" 13 #include "util/evlist.h" 14 #include "util/evsel.h" 15 #include "util/parse-events.h" 16 #include <subcmd/parse-options.h> 17 #include "util/session.h" 18 #include "util/data.h" 19 #include "util/debug.h" 20 21 static int __cmd_evlist(const char *file_name, struct perf_attr_details *details) 22 { 23 struct perf_session *session; 24 struct perf_evsel *pos; 25 struct perf_data data = { 26 .file = { 27 .path = file_name, 28 }, 29 .mode = PERF_DATA_MODE_READ, 30 .force = details->force, 31 }; 32 bool has_tracepoint = false; 33 34 session = perf_session__new(&data, 0, NULL); 35 if (session == NULL) 36 return -1; 37 38 evlist__for_each_entry(session->evlist, pos) { 39 perf_evsel__fprintf(pos, details, stdout); 40 41 if (pos->attr.type == PERF_TYPE_TRACEPOINT) 42 has_tracepoint = true; 43 } 44 45 if (has_tracepoint && !details->trace_fields) 46 printf("# Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events\n"); 47 48 perf_session__delete(session); 49 return 0; 50 } 51 52 int cmd_evlist(int argc, const char **argv) 53 { 54 struct perf_attr_details details = { .verbose = false, }; 55 const struct option options[] = { 56 OPT_STRING('i', "input", &input_name, "file", "Input file name"), 57 OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"), 58 OPT_BOOLEAN('v', "verbose", &details.verbose, 59 "Show all event attr details"), 60 OPT_BOOLEAN('g', "group", &details.event_group, 61 "Show event group information"), 62 OPT_BOOLEAN('f', "force", &details.force, "don't complain, do it"), 63 OPT_BOOLEAN(0, "trace-fields", &details.trace_fields, "Show tracepoint fields"), 64 OPT_END() 65 }; 66 const char * const evlist_usage[] = { 67 "perf evlist [<options>]", 68 NULL 69 }; 70 71 argc = parse_options(argc, argv, options, evlist_usage, 0); 72 if (argc) 73 usage_with_options(evlist_usage, options); 74 75 if (details.event_group && (details.verbose || details.freq)) { 76 usage_with_options_msg(evlist_usage, options, 77 "--group option is not compatible with other options\n"); 78 } 79 80 return __cmd_evlist(input_name, &details); 81 } 82