Root/
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 | |
19 | static 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 | |
39 | int 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 | } |
67 |
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