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
__cmd_evlist(const char * file_name,struct perf_attr_details * details)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
cmd_evlist(int argc,const char ** argv,const char * prefix __maybe_unused)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 }
62