1/*
2 * Interface for configuring and controlling the state of tracing events.
3 *
4 * Copyright (C) 2011-2016 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__CONTROL_VCPU_H
11#define TRACE__CONTROL_VCPU_H
12
13#include "control.h"
14#include "event-internal.h"
15#include "hw/core/cpu.h"
16
17/**
18 * trace_event_get_vcpu_state:
19 * @vcpu: Target vCPU.
20 * @id: Event identifier name.
21 *
22 * Get the tracing state of an event (both static and dynamic) for the given
23 * vCPU.
24 *
25 * If the event has the disabled property, the check will have no performance
26 * impact.
27 */
28#define trace_event_get_vcpu_state(vcpu, id) \
29 ((id ##_ENABLED) && \
30 trace_event_get_vcpu_state_dynamic_by_vcpu_id( \
31 vcpu, _ ## id ## _EVENT.vcpu_id))
32
33/**
34 * trace_event_get_vcpu_state_dynamic:
35 *
36 * Get the dynamic tracing state of an event for the given vCPU.
37 */
38static bool trace_event_get_vcpu_state_dynamic(CPUState *vcpu, TraceEvent *ev);
39
40#include "control-internal.h"
41
42static inline bool
43trace_event_get_vcpu_state_dynamic_by_vcpu_id(CPUState *vcpu,
44 uint32_t vcpu_id)
45{
46 /* it's on fast path, avoid consistency checks (asserts) */
47 if (unlikely(trace_events_enabled_count)) {
48 return test_bit(vcpu_id, vcpu->trace_dstate);
49 } else {
50 return false;
51 }
52}
53
54static inline bool trace_event_get_vcpu_state_dynamic(CPUState *vcpu,
55 TraceEvent *ev)
56{
57 uint32_t vcpu_id;
58 assert(trace_event_is_vcpu(ev));
59 vcpu_id = trace_event_get_vcpu_id(ev);
60 return trace_event_get_vcpu_state_dynamic_by_vcpu_id(vcpu, vcpu_id);
61}
62
63#endif
64