perf evlist: Introduce side band thread

[thirdparty/kernel/linux.git] / tools / perf / builtin-record.c

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index e79faccd7842c199d1b3e97f36533537d8e2d04b..6f645fd72fed74b7064a7391fb275ffec263215d 100644 (file)
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -1137,6 +1137,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
        struct perf_data *data = &rec->data;
        struct perf_session *session;
        bool disabled = false, draining = false;
+       struct perf_evlist *sb_evlist = NULL;
        int fd;
 
        atexit(record__sig_exit);
@@ -1237,6 +1238,11 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
                goto out_child;
        }
 
+       if (perf_evlist__start_sb_thread(sb_evlist, &rec->opts.target)) {
+               pr_debug("Couldn't start the BPF side band thread:\nBPF programs starting from now on won't be annotatable\n");
+               opts->no_bpf_event = true;
+       }
+
        err = record__synthesize(rec, false);
        if (err < 0)
                goto out_child;
@@ -1487,6 +1493,9 @@ out_child:
 
 out_delete_session:
        perf_session__delete(session);
+
+       if (!opts->no_bpf_event)
+               perf_evlist__stop_sb_thread(sb_evlist);
        return status;
 }