diff options
Diffstat (limited to 'trace')
| -rw-r--r-- | trace/control.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/trace/control.c b/trace/control.c index f5fb11d280..82d8989c4d 100644 --- a/trace/control.c +++ b/trace/control.c @@ -65,8 +65,15 @@ void trace_event_register_group(TraceEvent **events) size_t i; for (i = 0; events[i] != NULL; i++) { events[i]->id = next_id++; - if (events[i]->vcpu_id != TRACE_VCPU_EVENT_NONE) { + if (events[i]->vcpu_id == TRACE_VCPU_EVENT_NONE) { + continue; + } + + if (likely(next_vcpu_id < CPU_TRACE_DSTATE_MAX_EVENTS)) { events[i]->vcpu_id = next_vcpu_id++; + } else { + error_report("WARNING: too many vcpu trace events; dropping '%s'", + events[i]->name); } } event_groups = g_renew(TraceEventGroup, event_groups, nevent_groups + 1); |