diff options
Diffstat (limited to 'kernel/trace/trace_events_trigger.c')
| -rw-r--r-- | kernel/trace/trace_events_trigger.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/kernel/trace/trace_events_trigger.c b/kernel/trace/trace_events_trigger.c index 3105dbf6c0e9..634d120eab2b 100644 --- a/kernel/trace/trace_events_trigger.c +++ b/kernel/trace/trace_events_trigger.c @@ -1140,8 +1140,10 @@ register_snapshot_trigger(char *glob, struct event_trigger_ops *ops, struct event_trigger_data *data, struct trace_event_file *file) { - if (tracing_alloc_snapshot_instance(file->tr) != 0) - return 0; + int ret = tracing_alloc_snapshot_instance(file->tr); + + if (ret < 0) + return ret; return register_trigger(glob, ops, data, file); } @@ -1219,7 +1221,14 @@ static void stacktrace_trigger(struct event_trigger_data *data, void *rec, struct ring_buffer_event *event) { - trace_dump_stack(STACK_SKIP); + struct trace_event_file *file = data->private_data; + unsigned long flags; + + if (file) { + local_save_flags(flags); + __trace_stack(file->tr, flags, STACK_SKIP, preempt_count()); + } else + trace_dump_stack(STACK_SKIP); } static void |