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
18static 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
34int 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