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