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trace: Add per-vCPU tracing states for events with the 'vcpu' property

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Each vCPU gets a 'trace_dstate' bitmap to control the per-vCPU dynamic
tracing state of events with the 'vcpu' property.

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Lluís Vilanova 2016-07-11 12:53:41 +02:00 • committed by Stefan Hajnoczi
parent e1d6e0a4c0
commit 4815185902
13 changed files with 210 additions and 10 deletions
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28
stubs/trace-control.c Normal file
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/*
* Interface for configuring and controlling the state of tracing events.
*
* Copyright (C) 2014-2016 Lluís Vilanova <vilanova@ac.upc.edu>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "trace/control.h"
void trace_event_set_state_dynamic(TraceEvent *ev, bool state)
{
TraceEventID id;
assert(trace_event_get_state_static(ev));
id = trace_event_get_id(ev);
trace_events_enabled_count += state - trace_events_dstate[id];
trace_events_dstate[id] = state;
}
void trace_event_set_vcpu_state_dynamic(CPUState *vcpu,
TraceEvent *ev, bool state)
{
/* should never be called on non-target binaries */
abort();
}