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