tools/perf/builtin-evlist.c

   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         evlist__for_each(session->evlist, pos)
  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 }