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, 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, 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
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