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authorLluís Vilanova <vilanova@ac.upc.edu>2016-07-11 12:53:41 +0200
committerStefan Hajnoczi <stefanha@redhat.com>2016-07-18 18:23:12 +0100
commit4815185902971c41fcdd700fa1fc3e1d9299900f (patch)
treefcdcdbb543e1ea9828e4e8820368675692f761f3 /stubs
parente1d6e0a4c0e23b30501b887211f1fa6e0eb799a3 (diff)
trace: Add per-vCPU tracing states for events with the 'vcpu' property
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>
Diffstat (limited to 'stubs')
-rw-r--r--stubs/Makefile.objs1
-rw-r--r--stubs/trace-control.c28
2 files changed, 29 insertions, 0 deletions
diff --git a/stubs/Makefile.objs b/stubs/Makefile.objs
index 7cdcad4fdb..55edd15d71 100644
--- a/stubs/Makefile.objs
+++ b/stubs/Makefile.objs
@@ -30,6 +30,7 @@ stub-obj-y += runstate-check.o
stub-obj-y += set-fd-handler.o
stub-obj-y += slirp.o
stub-obj-y += sysbus.o
+stub-obj-y += trace-control.o
stub-obj-y += uuid.o
stub-obj-y += vm-stop.o
stub-obj-y += vmstate.o
diff --git a/stubs/trace-control.c b/stubs/trace-control.c
new file mode 100644
index 0000000000..fe59836fce
--- /dev/null
+++ b/stubs/trace-control.c
@@ -0,0 +1,28 @@
+/*
+ * 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();
+}