1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | // Copyright (C) 2019, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> |
3 | |
4 | #include "evswitch.h" |
5 | #include "evlist.h" |
6 | |
7 | bool evswitch__discard(struct evswitch *evswitch, struct evsel *evsel) |
8 | { |
9 | if (evswitch->on && evswitch->discarding) { |
10 | if (evswitch->on != evsel) |
11 | return true; |
12 | |
13 | evswitch->discarding = false; |
14 | |
15 | if (!evswitch->show_on_off_events) |
16 | return true; |
17 | |
18 | return false; |
19 | } |
20 | |
21 | if (evswitch->off && !evswitch->discarding) { |
22 | if (evswitch->off != evsel) |
23 | return false; |
24 | |
25 | evswitch->discarding = true; |
26 | |
27 | if (!evswitch->show_on_off_events) |
28 | return true; |
29 | } |
30 | |
31 | return false; |
32 | } |
33 | |
34 | static int evswitch__fprintf_enoent(FILE *fp, const char *evtype, const char *evname) |
35 | { |
36 | int printed = fprintf(fp, "ERROR: switch-%s event not found (%s)\n" , evtype, evname); |
37 | |
38 | return printed += fprintf(fp, "HINT: use 'perf evlist' to see the available event names\n" ); |
39 | } |
40 | |
41 | int evswitch__init(struct evswitch *evswitch, struct evlist *evlist, FILE *fp) |
42 | { |
43 | if (evswitch->on_name) { |
44 | evswitch->on = evlist__find_evsel_by_str(evlist, str: evswitch->on_name); |
45 | if (evswitch->on == NULL) { |
46 | evswitch__fprintf_enoent(fp, "on" , evswitch->on_name); |
47 | return -ENOENT; |
48 | } |
49 | evswitch->discarding = true; |
50 | } |
51 | |
52 | if (evswitch->off_name) { |
53 | evswitch->off = evlist__find_evsel_by_str(evlist, str: evswitch->off_name); |
54 | if (evswitch->off == NULL) { |
55 | evswitch__fprintf_enoent(fp, "off" , evswitch->off_name); |
56 | return -ENOENT; |
57 | } |
58 | } |
59 | |
60 | return 0; |
61 | } |
62 | |