1 | /* |
2 | * Interface for configuring and controlling the state of tracing events. |
3 | * |
4 | * Copyright (C) 2012-2016 LluĂs 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 | * Special value for TraceEvent.vcpu_id field to indicate |
15 | * that the event is not VCPU specific |
16 | */ |
17 | #define TRACE_VCPU_EVENT_NONE ((uint32_t)-1) |
18 | |
19 | /** |
20 | * TraceEvent: |
21 | * @id: Unique event identifier. |
22 | * @vcpu_id: Unique per-vCPU event identifier. |
23 | * @name: Event name. |
24 | * @sstate: Static tracing state. |
25 | * @dstate: Dynamic tracing state |
26 | * |
27 | * Interpretation of @dstate depends on whether the event has the 'vcpu' |
28 | * property: |
29 | * - false: Boolean value indicating whether the event is active. |
30 | * - true : Integral counting the number of vCPUs that have this event enabled. |
31 | * |
32 | * Opaque generic description of a tracing event. |
33 | */ |
34 | typedef struct TraceEvent { |
35 | uint32_t id; |
36 | uint32_t vcpu_id; |
37 | const char * name; |
38 | const bool sstate; |
39 | uint16_t *dstate; |
40 | } TraceEvent; |
41 | |
42 | void trace_event_set_state_dynamic_init(TraceEvent *ev, bool state); |
43 | |
44 | #endif /* TRACE__EVENT_INTERNAL_H */ |
45 | |