traced: Add kernel version to trace
trace_processor needs certain information about the system the trace was
taken from to understand the trace. Add that information on first read.
Change-Id: Idd50516e7d263139e87da460661e30f67938889f
diff --git a/src/tracing/core/tracing_service_impl.h b/src/tracing/core/tracing_service_impl.h
index d3e33ca..3731336 100644
--- a/src/tracing/core/tracing_service_impl.h
+++ b/src/tracing/core/tracing_service_impl.h
@@ -366,6 +366,9 @@
// Whether we mirrored the trace config back to the trace output yet.
bool did_emit_config = false;
+ // Whether we put the system info into the trace output yet.
+ bool did_emit_system_info = false;
+
State state = DISABLED;
// If the consumer detached the session, this variable defines the key used
@@ -410,6 +413,7 @@
void SnapshotStats(TracingSession*, std::vector<TracePacket>*);
TraceStats GetTraceStats(TracingSession* tracing_session);
void MaybeEmitTraceConfig(TracingSession*, std::vector<TracePacket>*);
+ void MaybeEmitSystemInfo(TracingSession*, std::vector<TracePacket>*);
void OnFlushTimeout(TracingSessionID, FlushRequestID);
void OnDisableTracingTimeout(TracingSessionID);
void DisableTracingNotifyConsumerAndFlushFile(TracingSession*);