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(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, const char *prefix __maybe_unused)
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}

 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 "perf.h"
11#include "util/evlist.h"
12#include "util/evsel.h"
13#include "util/evsel_fprintf.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#include <linux/err.h>
20#include "util/tool.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		/* only needed for pipe mode */
40		.attr = perf_event__process_attr,
41		.feature = process_header_feature,
42	};
43	bool has_tracepoint = false;
44
45	session = perf_session__new(&data, 0, &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
59	if (has_tracepoint && !details->trace_fields)
60		printf("# Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events\n");
61
62	perf_session__delete(session);
63	return 0;
64}
65
66int cmd_evlist(int argc, const char **argv)
67{
68	struct perf_attr_details details = { .verbose = false, };
69	const struct option options[] = {
70	OPT_STRING('i', "input", &input_name, "file", "Input file name"),
71	OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"),
72	OPT_BOOLEAN('v', "verbose", &details.verbose,
73		    "Show all event attr details"),
74	OPT_BOOLEAN('g', "group", &details.event_group,
75		    "Show event group information"),
76	OPT_BOOLEAN('f', "force", &details.force, "don't complain, do it"),
77	OPT_BOOLEAN(0, "trace-fields", &details.trace_fields, "Show tracepoint fields"),
78	OPT_END()
79	};
80	const char * const evlist_usage[] = {
81		"perf evlist [<options>]",
82		NULL
83	};
84
85	argc = parse_options(argc, argv, options, evlist_usage, 0);
86	if (argc)
87		usage_with_options(evlist_usage, options);
88
89	if (details.event_group && (details.verbose || details.freq)) {
90		usage_with_options_msg(evlist_usage, options,
91			"--group option is not compatible with other options\n");
92	}
93
94	return __cmd_evlist(input_name, &details);
95}