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Suggested-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190709152053.16670-2-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> [Rebased onto merge commit 95a9457fd44; missed instances of qom/cpu.h in comments replaced]
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/*
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* Interface for configuring and controlling the state of tracing events.
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*
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* Copyright (C) 2011-2016 Lluís Vilanova <vilanova@ac.upc.edu>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef TRACE__CONTROL_VCPU_H
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#define TRACE__CONTROL_VCPU_H
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#include "control.h"
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#include "event-internal.h"
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#include "hw/core/cpu.h"
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/**
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* trace_event_get_vcpu_state:
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* @vcpu: Target vCPU.
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* @id: Event identifier name.
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*
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* Get the tracing state of an event (both static and dynamic) for the given
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* vCPU.
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*
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* If the event has the disabled property, the check will have no performance
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* impact.
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*/
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#define trace_event_get_vcpu_state(vcpu, id) \
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((id ##_ENABLED) && \
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trace_event_get_vcpu_state_dynamic_by_vcpu_id( \
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vcpu, _ ## id ## _EVENT.vcpu_id))
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/**
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* trace_event_get_vcpu_state_dynamic:
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*
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* Get the dynamic tracing state of an event for the given vCPU.
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*/
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static bool trace_event_get_vcpu_state_dynamic(CPUState *vcpu, TraceEvent *ev);
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#include "control-internal.h"
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static inline bool
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trace_event_get_vcpu_state_dynamic_by_vcpu_id(CPUState *vcpu,
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uint32_t vcpu_id)
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{
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/* it's on fast path, avoid consistency checks (asserts) */
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if (unlikely(trace_events_enabled_count)) {
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return test_bit(vcpu_id, vcpu->trace_dstate);
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} else {
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return false;
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}
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}
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static inline bool trace_event_get_vcpu_state_dynamic(CPUState *vcpu,
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TraceEvent *ev)
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{
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uint32_t vcpu_id;
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assert(trace_event_is_vcpu(ev));
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vcpu_id = trace_event_get_vcpu_id(ev);
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return trace_event_get_vcpu_state_dynamic_by_vcpu_id(vcpu, vcpu_id);
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}
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#endif
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