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 char const *input_name = "perf.data";
  19
  20 static int __cmd_evlist(void)
  21 {
  22         struct perf_session *session;
  23         struct perf_evsel *pos;
  24
  25         session = perf_session__new(input_name, O_RDONLY, 0, false, NULL);
  26         if (session == NULL)
  27                 return -ENOMEM;
  28
  29         list_for_each_entry(pos, &session->evlist->entries, node)
  30                 printf("%s\n", event_name(pos));
  31
  32         perf_session__delete(session);
  33         return 0;
  34 }
  35
  36 static const char * const evlist_usage[] = {
  37         "perf evlist [<options>]",
  38         NULL
  39 };
  40
  41 static const struct option options[] = {
  42         OPT_STRING('i', "input", &input_name, "file",
  43                     "input file name"),
  44         OPT_END()
  45 };
  46
  47 int cmd_evlist(int argc, const char **argv, const char *prefix __used)
  48 {
  49         argc = parse_options(argc, argv, options, evlist_usage, 0);
  50         if (argc)
  51                 usage_with_options(evlist_usage, options);
  52
  53         return __cmd_evlist();
  54 }