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 struct perf_attr_details {
  19         bool freq;
  20         bool verbose;
  21 };
  22
  23 static int comma_printf(bool *first, const char *fmt, ...)
  24 {
  25         va_list args;
  26         int ret = 0;
  27
  28         if (!*first) {
  29                 ret += printf(",");
  30         } else {
  31                 ret += printf(":");
  32                 *first = false;
  33         }
  34
  35         va_start(args, fmt);
  36         ret += vprintf(fmt, args);
  37         va_end(args);
  38         return ret;
  39 }
  40
  41 static int __if_print(bool *first, const char *field, u64 value)
  42 {
  43         if (value == 0)
  44                 return 0;
  45
  46         return comma_printf(first, " %s: %" PRIu64, field, value);
  47 }
  48
  49 #define if_print(field) __if_print(&first, #field, pos->attr.field)
  50
  51 static int __cmd_evlist(const char *input_name, struct perf_attr_details *details)
  52 {
  53         struct perf_session *session;
  54         struct perf_evsel *pos;
  55
  56         session = perf_session__new(input_name, O_RDONLY, 0, false, NULL);
  57         if (session == NULL)
  58                 return -ENOMEM;
  59
  60         list_for_each_entry(pos, &session->evlist->entries, node) {
  61                 bool first = true;
  62
  63                 printf("%s", perf_evsel__name(pos));
  64
  65                 if (details->verbose || details->freq) {
  66                         comma_printf(&first, " sample_freq=%" PRIu64,
  67                                      (u64)pos->attr.sample_freq);
  68                 }
  69
  70                 if (details->verbose) {
  71                         if_print(type);
  72                         if_print(config);
  73                         if_print(config1);
  74                         if_print(config2);
  75                         if_print(size);
  76                         if_print(sample_type);
  77                         if_print(read_format);
  78                         if_print(disabled);
  79                         if_print(inherit);
  80                         if_print(pinned);
  81                         if_print(exclusive);
  82                         if_print(exclude_user);
  83                         if_print(exclude_kernel);
  84                         if_print(exclude_hv);
  85                         if_print(exclude_idle);
  86                         if_print(mmap);
  87                         if_print(comm);
  88                         if_print(freq);
  89                         if_print(inherit_stat);
  90                         if_print(enable_on_exec);
  91                         if_print(task);
  92                         if_print(watermark);
  93                         if_print(precise_ip);
  94                         if_print(mmap_data);
  95                         if_print(sample_id_all);
  96                         if_print(exclude_host);
  97                         if_print(exclude_guest);
  98                         if_print(__reserved_1);
  99                         if_print(wakeup_events);
 100                         if_print(bp_type);
 101                         if_print(branch_sample_type);
 102                 }
 103
 104                 putchar('\n');
 105         }
 106
 107         perf_session__delete(session);
 108         return 0;
 109 }
 110
 111 int cmd_evlist(int argc, const char **argv, const char *prefix __maybe_unused)
 112 {
 113         struct perf_attr_details details = { .verbose = false, };
 114         const char *input_name = NULL;
 115         const struct option options[] = {
 116         OPT_STRING('i', "input", &input_name, "file", "Input file name"),
 117         OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"),
 118         OPT_BOOLEAN('v', "verbose", &details.verbose,
 119                     "Show all event attr details"),
 120         OPT_END()
 121         };
 122         const char * const evlist_usage[] = {
 123                 "perf evlist [<options>]",
 124                 NULL
 125         };
 126
 127         argc = parse_options(argc, argv, options, evlist_usage, 0);
 128         if (argc)
 129                 usage_with_options(evlist_usage, options);
 130
 131         return __cmd_evlist(input_name, &details);
 132 }