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 /** 14 * TraceEvent: 15 * @id: Unique event identifier. 16 * @vcpu_id: Unique per-vCPU event identifier. 17 * @name: Event name. 18 * @sstate: Static tracing state. 19 * @dstate: Dynamic tracing state 20 * 21 * Interpretation of @dstate depends on whether the event has the 'vcpu' 22 * property: 23 * - false: Boolean value indicating whether the event is active. 24 * - true : Integral counting the number of vCPUs that have this event enabled. 25 * 26 * Opaque generic description of a tracing event. 27 */ 28 typedef struct TraceEvent { 29 uint32_t id; 30 uint32_t vcpu_id; 31 const char * name; 32 const bool sstate; 33 uint16_t *dstate; 34 } TraceEvent; 35 36 void trace_event_set_state_dynamic_init(TraceEvent *ev, bool state); 37 38 #endif /* TRACE__EVENT_INTERNAL_H */ 39