1 /* 2 * Interface for configuring and controlling the state of tracing events. 3 * 4 * Copyright (C) 2012-2016 Lluís Vilanova <vilanova@ac.upc.edu> 5 * 6 * This work is licensed under the terms of the GNU GPL, version 2 or later. 7 * See the COPYING file in the top-level directory. 8 */ 9 10 #ifndef TRACE__EVENT_INTERNAL_H 11 #define TRACE__EVENT_INTERNAL_H 12 13 #include "trace/generated-events.h" 14 15 16 /** 17 * TraceEvent: 18 * @id: Unique event identifier. 19 * @vcpu_id: Unique per-vCPU event identifier. 20 * @name: Event name. 21 * @sstate: Static tracing state. 22 * @dstate: Dynamic tracing state 23 * 24 * Interpretation of @dstate depends on whether the event has the 'vcpu' 25 * property: 26 * - false: Boolean value indicating whether the event is active. 27 * - true : Integral counting the number of vCPUs that have this event enabled. 28 * 29 * Opaque generic description of a tracing event. 30 */ 31 typedef struct TraceEvent { 32 TraceEventID id; 33 TraceEventVCPUID vcpu_id; 34 const char * name; 35 const bool sstate; 36 uint16_t *dstate; 37 } TraceEvent; 38 39 void trace_event_set_state_dynamic_init(TraceEvent *ev, bool state); 40 41 #endif /* TRACE__EVENT_INTERNAL_H */ 42