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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 | ||
21 | static int __cmd_evlist(const char *file_name, struct perf_attr_details *details) | |
22 | { | |
23 | struct perf_session *session; | |
24 | struct evsel *pos; | |
25 | struct perf_data data = { | |
26 | .path = file_name, | |
27 | .mode = PERF_DATA_MODE_READ, | |
28 | .force = details->force, | |
29 | }; | |
30 | bool has_tracepoint = false; | |
31 | ||
32 | session = perf_session__new(&data, 0, NULL); | |
33 | if (IS_ERR(session)) | |
34 | return PTR_ERR(session); | |
35 | ||
36 | evlist__for_each_entry(session->evlist, pos) { | |
37 | perf_evsel__fprintf(pos, details, stdout); | |
38 | ||
39 | if (pos->core.attr.type == PERF_TYPE_TRACEPOINT) | |
40 | has_tracepoint = true; | |
41 | } | |
42 | ||
43 | if (has_tracepoint && !details->trace_fields) | |
44 | printf("# Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events\n"); | |
45 | ||
46 | perf_session__delete(session); | |
47 | return 0; | |
48 | } | |
49 | ||
50 | int cmd_evlist(int argc, const char **argv) | |
51 | { | |
52 | struct perf_attr_details details = { .verbose = false, }; | |
53 | const struct option options[] = { | |
54 | OPT_STRING('i', "input", &input_name, "file", "Input file name"), | |
55 | OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"), | |
56 | OPT_BOOLEAN('v', "verbose", &details.verbose, | |
57 | "Show all event attr details"), | |
58 | OPT_BOOLEAN('g', "group", &details.event_group, | |
59 | "Show event group information"), | |
60 | OPT_BOOLEAN('f', "force", &details.force, "don't complain, do it"), | |
61 | OPT_BOOLEAN(0, "trace-fields", &details.trace_fields, "Show tracepoint fields"), | |
62 | OPT_END() | |
63 | }; | |
64 | const char * const evlist_usage[] = { | |
65 | "perf evlist [<options>]", | |
66 | NULL | |
67 | }; | |
68 | ||
69 | argc = parse_options(argc, argv, options, evlist_usage, 0); | |
70 | if (argc) | |
71 | usage_with_options(evlist_usage, options); | |
72 | ||
73 | if (details.event_group && (details.verbose || details.freq)) { | |
74 | usage_with_options_msg(evlist_usage, options, | |
75 | "--group option is not compatible with other options\n"); | |
76 | } | |
77 | ||
78 | return __cmd_evlist(input_name, &details); | |
79 | } |