LXR linux/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 <subcmd/parse-options.h>
  16#include "util/session.h"
  17#include "util/data.h"
  18#include "util/debug.h"
  19
  20static 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                .force = details->force,
  28        };
  29        bool has_tracepoint = false;
  30
  31        session = perf_session__new(&file, 0, NULL);
  32        if (session == NULL)
  33                return -1;
  34
  35        evlist__for_each_entry(session->evlist, pos) {
  36                perf_evsel__fprintf(pos, details, stdout);
  37
  38                if (pos->attr.type == PERF_TYPE_TRACEPOINT)
  39                        has_tracepoint = true;
  40        }
  41
  42        if (has_tracepoint && !details->trace_fields)
  43                printf("# Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events\n");
  44
  45        perf_session__delete(session);
  46        return 0;
  47}
  48
  49int cmd_evlist(int argc, const char **argv)
  50{
  51        struct perf_attr_details details = { .verbose = false, };
  52        const struct option options[] = {
  53        OPT_STRING('i', "input", &input_name, "file", "Input file name"),
  54        OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"),
  55        OPT_BOOLEAN('v', "verbose", &details.verbose,
  56                    "Show all event attr details"),
  57        OPT_BOOLEAN('g', "group", &details.event_group,
  58                    "Show event group information"),
  59        OPT_BOOLEAN('f', "force", &details.force, "don't complain, do it"),
  60        OPT_BOOLEAN(0, "trace-fields", &details.trace_fields, "Show tracepoint fields"),
  61        OPT_END()
  62        };
  63        const char * const evlist_usage[] = {
  64                "perf evlist [<options>]",
  65                NULL
  66        };
  67
  68        argc = parse_options(argc, argv, options, evlist_usage, 0);
  69        if (argc)
  70                usage_with_options(evlist_usage, options);
  71
  72        if (details.event_group && (details.verbose || details.freq)) {
  73                usage_with_options_msg(evlist_usage, options,
  74                        "--group option is not compatible with other options\n");
  75        }
  76
  77        return __cmd_evlist(input_name, &details);
  78}
  79