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
19static int __cmd_evlist(const char *file_name, struct perf_attr_details *details)
20{
21	struct perf_session *session;
22	struct perf_evsel *pos;
23	struct perf_data_file file = {
24		.path = file_name,
25		.mode = PERF_DATA_MODE_READ,
 
26	};
 
 
27
28	session = perf_session__new(&file, 0, NULL);
29	if (session == NULL)
30		return -ENOMEM;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
31
32	evlist__for_each(session->evlist, pos)
33		perf_evsel__fprintf(pos, details, stdout);
 
 
 
34
35	perf_session__delete(session);
36	return 0;
37}
38
39int cmd_evlist(int argc, const char **argv, const char *prefix __maybe_unused)
40{
41	struct perf_attr_details details = { .verbose = false, };
42	const struct option options[] = {
43	OPT_STRING('i', "input", &input_name, "file", "Input file name"),
44	OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"),
45	OPT_BOOLEAN('v', "verbose", &details.verbose,
46		    "Show all event attr details"),
47	OPT_BOOLEAN('g', "group", &details.event_group,
48		    "Show event group information"),
 
 
49	OPT_END()
50	};
51	const char * const evlist_usage[] = {
52		"perf evlist [<options>]",
53		NULL
54	};
55
56	argc = parse_options(argc, argv, options, evlist_usage, 0);
57	if (argc)
58		usage_with_options(evlist_usage, options);
59
60	if (details.event_group && (details.verbose || details.freq)) {
61		pr_err("--group option is not compatible with other options\n");
62		usage_with_options(evlist_usage, options);
63	}
64
65	return __cmd_evlist(input_name, &details);
66}

  1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * Builtin evlist command: Show the list of event selectors present
  4 * in a perf.data file.
  5 */
  6#include "builtin.h"
  7
 
 
  8#include <linux/list.h>
  9
 
 10#include "util/evlist.h"
 11#include "util/evsel.h"
 12#include "util/evsel_fprintf.h"
 13#include "util/parse-events.h"
 14#include <subcmd/parse-options.h>
 15#include "util/session.h"
 16#include "util/data.h"
 17#include "util/debug.h"
 18#include <linux/err.h>
 19#include "util/tool.h"
 20#include "util/util.h"
 21
 22static int process_header_feature(struct perf_session *session __maybe_unused,
 23				  union perf_event *event __maybe_unused)
 24{
 25	session_done = 1;
 26	return 0;
 27}
 28
 29static int __cmd_evlist(const char *file_name, struct perf_attr_details *details)
 30{
 31	struct perf_session *session;
 32	struct evsel *pos;
 33	struct perf_data data = {
 34		.path      = file_name,
 35		.mode      = PERF_DATA_MODE_READ,
 36		.force     = details->force,
 37	};
 38	struct perf_tool tool;
 39	bool has_tracepoint = false, has_group = false;
 40
 41	perf_tool__init(&tool, /*ordered_events=*/false);
 42	/* only needed for pipe mode */
 43	tool.attr = perf_event__process_attr;
 44	tool.feature = process_header_feature;
 45	session = perf_session__new(&data, &tool);
 46	if (IS_ERR(session))
 47		return PTR_ERR(session);
 48
 49	if (data.is_pipe)
 50		perf_session__process_events(session);
 51
 52	evlist__for_each_entry(session->evlist, pos) {
 53		evsel__fprintf(pos, details, stdout);
 54
 55		if (pos->core.attr.type == PERF_TYPE_TRACEPOINT)
 56			has_tracepoint = true;
 57
 58		if (!evsel__is_group_leader(pos))
 59			has_group = true;
 60	}
 61
 62	if (has_tracepoint && !details->trace_fields)
 63		printf("# Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events\n");
 64
 65	if (has_group && !details->event_group)
 66		printf("# Tip: use 'perf evlist -g' to show group information\n");
 67
 68	perf_session__delete(session);
 69	return 0;
 70}
 71
 72int cmd_evlist(int argc, const char **argv)
 73{
 74	struct perf_attr_details details = { .verbose = false, };
 75	const struct option options[] = {
 76	OPT_STRING('i', "input", &input_name, "file", "Input file name"),
 77	OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"),
 78	OPT_BOOLEAN('v', "verbose", &details.verbose,
 79		    "Show all event attr details"),
 80	OPT_BOOLEAN('g', "group", &details.event_group,
 81		    "Show event group information"),
 82	OPT_BOOLEAN('f', "force", &details.force, "don't complain, do it"),
 83	OPT_BOOLEAN(0, "trace-fields", &details.trace_fields, "Show tracepoint fields"),
 84	OPT_END()
 85	};
 86	const char * const evlist_usage[] = {
 87		"perf evlist [<options>]",
 88		NULL
 89	};
 90
 91	argc = parse_options(argc, argv, options, evlist_usage, 0);
 92	if (argc)
 93		usage_with_options(evlist_usage, options);
 94
 95	if (details.event_group && (details.verbose || details.freq)) {
 96		usage_with_options_msg(evlist_usage, options,
 97			"--group option is not compatible with other options\n");
 98	}
 99
100	return __cmd_evlist(input_name, &details);
101}