| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 = perf_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 = perf_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 | } |