From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnaldo Carvalho de Melo Subject: [PATCH 31/91] perf record: Move side band evlist setup to separate routine Date: Wed, 6 May 2020 12:21:34 -0300 Message-ID: <20200506152234.21977-32-acme@kernel.org> References: <20200506152234.21977-1-acme@kernel.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20200506152234.21977-1-acme@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: Ingo Molnar , Thomas Gleixner Cc: Jiri Olsa , Namhyung Kim , Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , Jiri Olsa , Adrian Hunter , Song Liu List-Id: linux-perf-users.vger.kernel.org From: Arnaldo Carvalho de Melo It is quite big by now, move that code to a separate record__setup_sb_evlist() routine. Suggested-by: Jiri Olsa Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Namhyung Kim Cc: Song Liu Link: http://lore.kernel.org/lkml/20200429131106.27974-9-acme@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 71 +++++++++++++++++++++---------------- 1 file changed, 41 insertions(+), 30 deletions(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index bb5b4d2fc32b..cfb9a69a42dd 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -1446,6 +1446,44 @@ static int record__process_signal_event(union perf_event *event __maybe_unused, return 0; } +static int record__setup_sb_evlist(struct record *rec) +{ + struct record_opts *opts = &rec->opts; + + if (rec->sb_evlist != NULL) { + /* + * We get here if --switch-output-event populated the + * sb_evlist, so associate a callback that will send a SIGUSR2 + * to the main thread. + */ + evlist__set_cb(rec->sb_evlist, record__process_signal_event, rec); + rec->thread_id = pthread_self(); + } + + if (!opts->no_bpf_event) { + if (rec->sb_evlist == NULL) { + rec->sb_evlist = evlist__new(); + + if (rec->sb_evlist == NULL) { + pr_err("Couldn't create side band evlist.\n."); + return -1; + } + } + + if (evlist__add_bpf_sb_event(rec->sb_evlist, &rec->session->header.env)) { + pr_err("Couldn't ask for PERF_RECORD_BPF_EVENT side band events.\n."); + return -1; + } + } + + if (perf_evlist__start_sb_thread(rec->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; + } + + return 0; +} + static int __cmd_record(struct record *rec, int argc, const char **argv) { int err; @@ -1590,36 +1628,9 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) goto out_child; } - if (rec->sb_evlist != NULL) { - /* - * We get here if --switch-output-event populated the - * sb_evlist, so associate a callback that will send a SIGUSR2 - * to the main thread. - */ - evlist__set_cb(rec->sb_evlist, record__process_signal_event, rec); - rec->thread_id = pthread_self(); - } - - if (!opts->no_bpf_event) { - if (rec->sb_evlist == NULL) { - rec->sb_evlist = evlist__new(); - - if (rec->sb_evlist == NULL) { - pr_err("Couldn't create side band evlist.\n."); - goto out_child; - } - } - - if (evlist__add_bpf_sb_event(rec->sb_evlist, &session->header.env)) { - pr_err("Couldn't ask for PERF_RECORD_BPF_EVENT side band events.\n."); - goto out_child; - } - } - - if (perf_evlist__start_sb_thread(rec->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__setup_sb_evlist(rec); + if (err) + goto out_child; err = record__synthesize(rec, false); if (err < 0) -- 2.21.1