diff options
Diffstat (limited to 'tools/perf/builtin-top.c')
| -rw-r--r-- | tools/perf/builtin-top.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index a30d62186f5e..b8fab267e855 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1542,7 +1542,6 @@ int cmd_top(int argc, const char **argv) OPTS_EVSWITCH(&top.evswitch), OPT_END() }; - struct evlist *sb_evlist = NULL; const char * const top_usage[] = { "perf top [<options>]", NULL @@ -1679,13 +1678,27 @@ int cmd_top(int argc, const char **argv) top.session = perf_session__new(NULL, false, NULL); if (IS_ERR(top.session)) { status = PTR_ERR(top.session); + top.session = NULL; goto out_delete_evlist; } - if (!top.record_opts.no_bpf_event) - bpf_event__add_sb_event(&sb_evlist, &perf_env); +#ifdef HAVE_LIBBPF_SUPPORT + if (!top.record_opts.no_bpf_event) { + top.sb_evlist = evlist__new(); - if (perf_evlist__start_sb_thread(sb_evlist, target)) { + if (top.sb_evlist == NULL) { + pr_err("Couldn't create side band evlist.\n."); + goto out_delete_evlist; + } + + if (evlist__add_bpf_sb_event(top.sb_evlist, &perf_env)) { + pr_err("Couldn't ask for PERF_RECORD_BPF_EVENT side band events.\n."); + goto out_delete_evlist; + } + } +#endif + + if (perf_evlist__start_sb_thread(top.sb_evlist, 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; } @@ -1693,7 +1706,7 @@ int cmd_top(int argc, const char **argv) status = __cmd_top(&top); if (!opts->no_bpf_event) - perf_evlist__stop_sb_thread(sb_evlist); + perf_evlist__stop_sb_thread(top.sb_evlist); out_delete_evlist: evlist__delete(top.evlist); |