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 | |
22 | static int (struct perf_session *session __maybe_unused, |
23 | union perf_event *event __maybe_unused) |
24 | { |
25 | session_done = 1; |
26 | return 0; |
27 | } |
28 | |
29 | static 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: &data, tool: &tool); |
46 | if (IS_ERR(ptr: session)) |
47 | return PTR_ERR(ptr: 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 | |
66 | int 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(file_name: input_name, details: &details); |
95 | } |
96 | |