perf sched: Remove die() calls

Just use pr_err() + return -1 and perf_session__process_events to abort
when some event would call die(), then let the perf's main() exit doing
whatever it needs.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-88cwdogxqomsy9tfr8r0as58@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 179 insertions, 102 deletions

diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index a25a023965bb..782f66d3610e 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -423,8 +423,8 @@ static int self_open_counters(void)
         fd = sys_perf_event_open(&attr, 0, -1, -1, 0);
 
         if (fd < 0)
-                die("Error: sys_perf_event_open() syscall returned"
-                    "with %d (%s)\n", fd, strerror(errno));
+                pr_debug("Error: sys_perf_event_open() syscall returned"
+                         "with %d (%s)\n", fd, strerror(errno));
         return fd;
 }
 
@@ -450,7 +450,8 @@ static void *thread_func(void *ctx)
         sprintf(comm2, ":%s", this_task->comm);
         prctl(PR_SET_NAME, comm2);
         fd = self_open_counters();
-
+        if (fd < 0)
+                return NULL;
 again:
         ret = sem_post(&this_task->ready_for_work);
         BUG_ON(ret);
@@ -726,30 +727,30 @@ struct trace_migrate_task_event {
 };
 
 struct trace_sched_handler {
-        void (*switch_event)(struct trace_switch_event *,
-                             struct machine *,
-                             struct event_format *,
-                             struct perf_sample *sample);
-
-        void (*runtime_event)(struct trace_runtime_event *,
-                              struct machine *,
-                              struct perf_sample *sample);
+        int (*switch_event)(struct trace_switch_event *event,
+                            struct machine *machine,
+                            struct event_format *tp_format,
+                            struct perf_sample *sample);
 
-        void (*wakeup_event)(struct trace_wakeup_event *,
-                             struct machine *,
-                             struct event_format *,
+        int (*runtime_event)(struct trace_runtime_event *event,
+                             struct machine *machine,
                              struct perf_sample *sample);
 
-        void (*fork_event)(struct trace_fork_event *,
-                           struct event_format *event);
+        int (*wakeup_event)(struct trace_wakeup_event *event,
+                            struct machine *machine,
+                            struct event_format *tp_format,
+                            struct perf_sample *sample);
 
-        void (*migrate_task_event)(struct trace_migrate_task_event *,
-                                   struct machine *machine,
-                                   struct perf_sample *sample);
+        int (*fork_event)(struct trace_fork_event *event,
+                          struct event_format *tp_format);
+
+        int (*migrate_task_event)(struct trace_migrate_task_event *event,
+                                  struct machine *machine,
+                                  struct perf_sample *sample);
 };
 
 
-static void
+static int
 replay_wakeup_event(struct trace_wakeup_event *wakeup_event,
                     struct machine *machine __used,
                     struct event_format *event, struct perf_sample *sample)
@@ -769,11 +770,12 @@ replay_wakeup_event(struct trace_wakeup_event *wakeup_event,
         wakee = register_pid(wakeup_event->pid, wakeup_event->comm);
 
         add_sched_event_wakeup(waker, sample->time, wakee);
+        return 0;
 }
 
 static u64 cpu_last_switched[MAX_CPUS];
 
-static void
+static int
 replay_switch_event(struct trace_switch_event *switch_event,
                     struct machine *machine __used,
                     struct event_format *event,
@@ -788,7 +790,7 @@ replay_switch_event(struct trace_switch_event *switch_event,
                 printf("sched_switch event %p\n", event);
 
         if (cpu >= MAX_CPUS || cpu < 0)
-                return;
+                return 0;
 
         timestamp0 = cpu_last_switched[cpu];
         if (timestamp0)
@@ -796,8 +798,10 @@ replay_switch_event(struct trace_switch_event *switch_event,
         else
                 delta = 0;
 
-        if (delta < 0)
-                die("hm, delta: %" PRIu64 " < 0 ?\n", delta);
+        if (delta < 0) {
+                pr_debug("hm, delta: %" PRIu64 " < 0 ?\n", delta);
+                return -1;
+        }
 
         if (verbose) {
                 printf(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n",
@@ -813,10 +817,12 @@ replay_switch_event(struct trace_switch_event *switch_event,
 
         add_sched_event_run(prev, timestamp, delta);
         add_sched_event_sleep(prev, timestamp, switch_event->prev_state);
+
+        return 0;
 }
 
 
-static void
+static int
 replay_fork_event(struct trace_fork_event *fork_event,
                   struct event_format *event)
 {
@@ -827,6 +833,7 @@ replay_fork_event(struct trace_fork_event *fork_event,
         }
         register_pid(fork_event->parent_pid, fork_event->parent_comm);
         register_pid(fork_event->child_pid, fork_event->child_comm);
+        return 0;
 }
 
 static struct trace_sched_handler replay_ops  = {
@@ -911,22 +918,26 @@ __thread_latency_insert(struct rb_root *root, struct work_atoms *data,
         rb_insert_color(&data->node, root);
 }
 
-static void thread_atoms_insert(struct thread *thread)
+static int thread_atoms_insert(struct thread *thread)
 {
         struct work_atoms *atoms = zalloc(sizeof(*atoms));
-        if (!atoms)
-                die("No memory");
+        if (!atoms) {
+                pr_err("No memory at %s\n", __func__);
+                return -1;
+        }
 
         atoms->thread = thread;
         INIT_LIST_HEAD(&atoms->work_list);
         __thread_latency_insert(&atom_root, atoms, &cmp_pid);
+        return 0;
 }
 
-static void
+static int
 latency_fork_event(struct trace_fork_event *fork_event __used,
                    struct event_format *event __used)
 {
         /* should insert the newcomer */
+        return 0;
 }
 
 __used
@@ -937,14 +948,16 @@ static char sched_out_state(struct trace_switch_event *switch_event)
         return str[switch_event->prev_state];
 }
 
-static void
+static int
 add_sched_out_event(struct work_atoms *atoms,
                     char run_state,
                     u64 timestamp)
 {
         struct work_atom *atom = zalloc(sizeof(*atom));
-        if (!atom)
-                die("Non memory");
+        if (!atom) {
+                pr_err("Non memory at %s", __func__);
+                return -1;
+        }
 
         atom->sched_out_time = timestamp;
 
@@ -954,6 +967,7 @@ add_sched_out_event(struct work_atoms *atoms,
         }
 
         list_add_tail(&atom->list, &atoms->work_list);
+        return 0;
 }
 
 static void
@@ -1000,7 +1014,7 @@ add_sched_in_event(struct work_atoms *atoms, u64 timestamp)
         atoms->nb_atoms++;
 }
 
-static void
+static int
 latency_switch_event(struct trace_switch_event *switch_event,
                      struct machine *machine,
                      struct event_format *event __used,
@@ -1021,38 +1035,49 @@ latency_switch_event(struct trace_switch_event *switch_event,
         else
                 delta = 0;
 
-        if (delta < 0)
-                die("hm, delta: %" PRIu64 " < 0 ?\n", delta);
-
+        if (delta < 0) {
+                pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta);
+                return -1;
+        }
 
         sched_out = machine__findnew_thread(machine, switch_event->prev_pid);
         sched_in = machine__findnew_thread(machine, switch_event->next_pid);
 
         out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid);
         if (!out_events) {
-                thread_atoms_insert(sched_out);
+                if (thread_atoms_insert(sched_out))
+                        return -1;
                 out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid);
-                if (!out_events)
-                        die("out-event: Internal tree error");
+                if (!out_events) {
+                        pr_err("out-event: Internal tree error");
+                        return -1;
+                }
         }
-        add_sched_out_event(out_events, sched_out_state(switch_event), timestamp);
+        if (add_sched_out_event(out_events, sched_out_state(switch_event), timestamp))
+                return -1;
 
         in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid);
         if (!in_events) {
-                thread_atoms_insert(sched_in);
+                if (thread_atoms_insert(sched_in))
+                        return -1;
                 in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid);
-                if (!in_events)
-                        die("in-event: Internal tree error");
+                if (!in_events) {
+                        pr_err("in-event: Internal tree error");
+                        return -1;
+                }
                 /*
                  * Take came in we have not heard about yet,
                  * add in an initial atom in runnable state:
                  */
-                add_sched_out_event(in_events, 'R', timestamp);
+                if (add_sched_out_event(in_events, 'R', timestamp))
+                        return -1;
         }
         add_sched_in_event(in_events, timestamp);
+
+        return 0;
 }
 
-static void
+static int
 latency_runtime_event(struct trace_runtime_event *runtime_event,
                       struct machine *machine, struct perf_sample *sample)
 {
@@ -1063,17 +1088,22 @@ latency_runtime_event(struct trace_runtime_event *runtime_event,
 
         BUG_ON(cpu >= MAX_CPUS || cpu < 0);
         if (!atoms) {
-                thread_atoms_insert(thread);
+                if (thread_atoms_insert(thread))
+                        return -1;
                 atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
-                if (!atoms)
-                        die("in-event: Internal tree error");
-                add_sched_out_event(atoms, 'R', timestamp);
+                if (!atoms) {
+                        pr_debug("in-event: Internal tree error");
+                        return -1;
+                }
+                if (add_sched_out_event(atoms, 'R', timestamp))
+                        return -1;
         }
 
         add_runtime_event(atoms, runtime_event->runtime, timestamp);
+        return 0;
 }
 
-static void
+static int
 latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
                      struct machine *machine, struct event_format *event __used,
                      struct perf_sample *sample)
@@ -1085,16 +1115,20 @@ latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
 
         /* Note for later, it may be interesting to observe the failing cases */
         if (!wakeup_event->success)
-                return;
+                return 0;
 
         wakee = machine__findnew_thread(machine, wakeup_event->pid);
         atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
         if (!atoms) {
-                thread_atoms_insert(wakee);
+                if (thread_atoms_insert(wakee))
+                        return -1;
                 atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
-                if (!atoms)
-                        die("wakeup-event: Internal tree error");
-                add_sched_out_event(atoms, 'S', timestamp);
+                if (!atoms) {
+                        pr_debug("wakeup-event: Internal tree error");
+                        return -1;
+                }
+                if (add_sched_out_event(atoms, 'S', timestamp))
+                        return -1;
         }
 
         BUG_ON(list_empty(&atoms->work_list));
@@ -1112,14 +1146,15 @@ latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
         nr_timestamps++;
         if (atom->sched_out_time > timestamp) {
                 nr_unordered_timestamps++;
-                return;
+                return 0;
         }
 
         atom->state = THREAD_WAIT_CPU;
         atom->wake_up_time = timestamp;
+        return 0;
 }
 
-static void
+static int
 latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event,
                            struct machine *machine, struct perf_sample *sample)
 {
@@ -1132,17 +1167,21 @@ latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event,
          * Only need to worry about migration when profiling one CPU.
          */
         if (profile_cpu == -1)
-                return;
+                return 0;
 
         migrant = machine__findnew_thread(machine, migrate_task_event->pid);
         atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid);
         if (!atoms) {
-                thread_atoms_insert(migrant);
+                if (thread_atoms_insert(migrant))
+                        return -1;
                 register_pid(migrant->pid, migrant->comm);
                 atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid);
-                if (!atoms)
-                        die("migration-event: Internal tree error");
-                add_sched_out_event(atoms, 'R', timestamp);
+                if (!atoms) {
+                        pr_debug("migration-event: Internal tree error");
+                        return -1;
+                }
+                if (add_sched_out_event(atoms, 'R', timestamp))
+                        return -1;
         }
 
         BUG_ON(list_empty(&atoms->work_list));
@@ -1154,6 +1193,8 @@ latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event,
 
         if (atom->sched_out_time > timestamp)
                 nr_unordered_timestamps++;
+
+        return 0;
 }
 
 static struct trace_sched_handler lat_ops  = {
@@ -1328,7 +1369,7 @@ static void sort_lat(void)
 
 static struct trace_sched_handler *trace_handler;
 
-static void
+static int
 process_sched_wakeup_event(struct perf_tool *tool __used,
                            struct event_format *event,
                            struct perf_sample *sample,
@@ -1337,6 +1378,7 @@ process_sched_wakeup_event(struct perf_tool *tool __used,
 {
         void *data = sample->raw_data;
         struct trace_wakeup_event wakeup_event;
+        int err = 0;
 
         FILL_COMMON_FIELDS(wakeup_event, event, data);
 
@@ -1347,7 +1389,9 @@ process_sched_wakeup_event(struct perf_tool *tool __used,
         FILL_FIELD(wakeup_event, cpu, event, data);
 
         if (trace_handler->wakeup_event)
-                trace_handler->wakeup_event(&wakeup_event, machine, event, sample);
+                err = trace_handler->wakeup_event(&wakeup_event, machine, event, sample);
+
+        return err;
 }
 
 /*
@@ -1363,7 +1407,7 @@ static struct thread *curr_thread[MAX_CPUS];
 static char next_shortname1 = 'A';
 static char next_shortname2 = '0';
 
-static void
+static int
 map_switch_event(struct trace_switch_event *switch_event,
                  struct machine *machine,
                  struct event_format *event __used,
@@ -1387,9 +1431,10 @@ map_switch_event(struct trace_switch_event *switch_event,
         else
                 delta = 0;
 
-        if (delta < 0)
-                die("hm, delta: %" PRIu64 " < 0 ?\n", delta);
-
+        if (delta < 0) {
+                pr_debug("hm, delta: %" PRIu64 " < 0 ?\n", delta);
+                return -1;
+        }
 
         sched_out = machine__findnew_thread(machine, switch_event->prev_pid);
         sched_in = machine__findnew_thread(machine, switch_event->next_pid);
@@ -1438,16 +1483,18 @@ map_switch_event(struct trace_switch_event *switch_event,
         } else {
                 printf("\n");
         }
+
+        return 0;
 }
 
-static void
+static int
 process_sched_switch_event(struct perf_tool *tool __used,
                            struct event_format *event,
                            struct perf_sample *sample,
                            struct machine *machine,
                            struct thread *thread __used)
 {
-        int this_cpu = sample->cpu;
+        int this_cpu = sample->cpu, err = 0;
         void *data = sample->raw_data;
         struct trace_switch_event switch_event;
 
@@ -1470,12 +1517,13 @@ process_sched_switch_event(struct perf_tool *tool __used,
                         nr_context_switch_bugs++;
         }
         if (trace_handler->switch_event)
-                trace_handler->switch_event(&switch_event, machine, event, sample);
+                err = trace_handler->switch_event(&switch_event, machine, event, sample);
 
         curr_pid[this_cpu] = switch_event.next_pid;
+        return err;
 }
 
-static void
+static int
 process_sched_runtime_event(struct perf_tool *tool __used,
                             struct event_format *event,
                             struct perf_sample *sample,
@@ -1484,6 +1532,7 @@ process_sched_runtime_event(struct perf_tool *tool __used,
 {
         void *data = sample->raw_data;
         struct trace_runtime_event runtime_event;
+        int err = 0;
 
         FILL_ARRAY(runtime_event, comm, event, data);
         FILL_FIELD(runtime_event, pid, event, data);
@@ -1491,10 +1540,12 @@ process_sched_runtime_event(struct perf_tool *tool __used,
         FILL_FIELD(runtime_event, vruntime, event, data);
 
         if (trace_handler->runtime_event)
-                trace_handler->runtime_event(&runtime_event, machine, sample);
+                err = trace_handler->runtime_event(&runtime_event, machine, sample);
+
+        return err;
 }
 
-static void
+static int
 process_sched_fork_event(struct perf_tool *tool __used,
                          struct event_format *event,
                          struct perf_sample *sample,
@@ -1503,6 +1554,7 @@ process_sched_fork_event(struct perf_tool *tool __used,
 {
         void *data = sample->raw_data;
         struct trace_fork_event fork_event;
+        int err = 0;
 
         FILL_COMMON_FIELDS(fork_event, event, data);
 
@@ -1512,10 +1564,12 @@ process_sched_fork_event(struct perf_tool *tool __used,
         FILL_FIELD(fork_event, child_pid, event, data);
 
         if (trace_handler->fork_event)
-                trace_handler->fork_event(&fork_event, event);
+                err = trace_handler->fork_event(&fork_event, event);
+
+        return err;
 }
 
-static void
+static int
 process_sched_exit_event(struct perf_tool *tool __used,
                          struct event_format *event,
                          struct perf_sample *sample __used,
@@ -1524,9 +1578,11 @@ process_sched_exit_event(struct perf_tool *tool __used,
 {
         if (verbose)
                 printf("sched_exit event %p\n", event);
+
+        return 0;
 }
 
-static void
+static int
 process_sched_migrate_task_event(struct perf_tool *tool __used,
                                  struct event_format *event,
                                  struct perf_sample *sample,
@@ -1535,6 +1591,7 @@ process_sched_migrate_task_event(struct perf_tool *tool __used,
 {
         void *data = sample->raw_data;
         struct trace_migrate_task_event migrate_task_event;
+        int err = 0;
 
         FILL_COMMON_FIELDS(migrate_task_event, event, data);
 
@@ -1544,13 +1601,16 @@ process_sched_migrate_task_event(struct perf_tool *tool __used,
         FILL_FIELD(migrate_task_event, cpu, event, data);
 
         if (trace_handler->migrate_task_event)
-                trace_handler->migrate_task_event(&migrate_task_event, machine, sample);
+                err = trace_handler->migrate_task_event(&migrate_task_event, machine, sample);
+
+        return err;
 }
 
-typedef void (*tracepoint_handler)(struct perf_tool *tool, struct event_format *event,
-                                   struct perf_sample *sample,
-                                   struct machine *machine,
-                                   struct thread *thread);
+typedef int (*tracepoint_handler)(struct perf_tool *tool,
+                                  struct event_format *tp_format,
+                                  struct perf_sample *sample,
+                                  struct machine *machine,
+                                  struct thread *thread);
 
 static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __used,
                                                  union perf_event *event __used,
@@ -1559,6 +1619,7 @@ static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __used,
                                                  struct machine *machine)
 {
         struct thread *thread = machine__findnew_thread(machine, sample->pid);
+        int err = 0;
 
         if (thread == NULL) {
                 pr_debug("problem processing %s event, skipping it.\n",
@@ -1571,10 +1632,10 @@ static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __used,
 
         if (evsel->handler.func != NULL) {
                 tracepoint_handler f = evsel->handler.func;
-                f(tool, evsel->tp_format, sample, machine, thread);
+                err = f(tool, evsel->tp_format, sample, machine, thread);
         }
 
-        return 0;
+        return err;
 }
 
 static struct perf_tool perf_sched = {
@@ -1585,9 +1646,8 @@ static struct perf_tool perf_sched = {
         .ordered_samples = true,
 };
 
-static void read_events(bool destroy, struct perf_session **psession)
+static int read_events(bool destroy, struct perf_session **psession)
 {
-        int err = -EINVAL;
         const struct perf_evsel_str_handler handlers[] = {
                 { "sched:sched_switch",       process_sched_switch_event, },
                 { "sched:sched_stat_runtime", process_sched_runtime_event, },
@@ -1600,16 +1660,20 @@ static void read_events(bool destroy, struct perf_session **psession)
         struct perf_session *session;
 
         session = perf_session__new(input_name, O_RDONLY, 0, false, &perf_sched);
-        if (session == NULL)
-                die("No Memory");
+        if (session == NULL) {
+                pr_debug("No Memory for session\n");
+                return -1;
+        }
 
-        err = perf_session__set_tracepoints_handlers(session, handlers);
-        assert(err == 0);
+        if (perf_session__set_tracepoints_handlers(session, handlers))
+                goto out_delete;
 
         if (perf_session__has_traces(session, "record -R")) {
-                err = perf_session__process_events(session, &perf_sched);
-                if (err)
-                        die("Failed to process events, error %d", err);
+                int err = perf_session__process_events(session, &perf_sched);
+                if (err) {
+                        pr_err("Failed to process events, error %d", err);
+                        goto out_delete;
+                }
 
                 nr_events      = session->hists.stats.nr_events[0];
                 nr_lost_events = session->hists.stats.total_lost;
@@ -1621,6 +1685,12 @@ static void read_events(bool destroy, struct perf_session **psession)
 
         if (psession)
                 *psession = session;
+
+        return 0;
+
+out_delete:
+        perf_session__delete(session);
+        return -1;
 }
 
 static void print_bad_events(void)
@@ -1653,13 +1723,14 @@ static void print_bad_events(void)
         }
 }
 
-static void __cmd_lat(void)
+static int __cmd_lat(void)
 {
         struct rb_node *next;
         struct perf_session *session;
 
         setup_pager();
-        read_events(false, &session);
+        if (read_events(false, &session))
+                return -1;
         sort_lat();
 
         printf("\n ---------------------------------------------------------------------------------------------------------------\n");
@@ -1686,6 +1757,7 @@ static void __cmd_lat(void)
         printf("\n");
 
         perf_session__delete(session);
+        return 0;
 }
 
 static struct trace_sched_handler map_ops  = {
@@ -1695,16 +1767,18 @@ static struct trace_sched_handler map_ops  = {
         .fork_event             = NULL,
 };
 
-static void __cmd_map(void)
+static int __cmd_map(void)
 {
         max_cpu = sysconf(_SC_NPROCESSORS_CONF);
 
         setup_pager();
-        read_events(true, NULL);
+        if (read_events(true, NULL))
+                return -1;
         print_bad_events();
+        return 0;
 }
 
-static void __cmd_replay(void)
+static int __cmd_replay(void)
 {
         unsigned long i;
 
@@ -1713,7 +1787,8 @@ static void __cmd_replay(void)
 
         test_calibrations();
 
-        read_events(true, NULL);
+        if (read_events(true, NULL))
+                return -1;
 
         printf("nr_run_events:        %ld\n", nr_run_events);
         printf("nr_sleep_events:      %ld\n", nr_sleep_events);
@@ -1734,6 +1809,8 @@ static void __cmd_replay(void)
         printf("------------------------------------------------------------\n");
         for (i = 0; i < replay_repeat; i++)
                 run_one_test();
+
+        return 0;
 }
 
 
@@ -1865,11 +1942,11 @@ int cmd_sched(int argc, const char **argv, const char *prefix __used)
                                 usage_with_options(latency_usage, latency_options);
                 }
                 setup_sorting();
-                __cmd_lat();
+                return __cmd_lat();
         } else if (!strcmp(argv[0], "map")) {
                 trace_handler = &map_ops;
                 setup_sorting();
-                __cmd_map();
+                return __cmd_map();
         } else if (!strncmp(argv[0], "rep", 3)) {
                 trace_handler = &replay_ops;
                 if (argc) {
@@ -1877,7 +1954,7 @@ int cmd_sched(int argc, const char **argv, const char *prefix __used)
                         if (argc)
                                 usage_with_options(replay_usage, replay_options);
                 }
-                __cmd_replay();
+                return __cmd_replay();
         } else {
                 usage_with_options(sched_usage, sched_options);
         }