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 #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 -ENOMEM;
  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 }