4 # Copyright (C) 2011-2016 LluĂs Vilanova <vilanova@ac.upc.edu>
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.
16 # State of a tracing event.
18 # @unavailable: The event is statically disabled.
20 # @disabled: The event is dynamically disabled.
22 # @enabled: The event is dynamically enabled.
26 { 'enum': 'TraceEventState',
27 'data': ['unavailable', 'disabled', 'enabled'] }
32 # Information of a tracing event.
35 # @state: Tracing state.
36 # @vcpu: Whether this is a per-vCPU event (since 2.7).
38 # An event is per-vCPU if it has the "vcpu" property in the "trace-events"
43 { 'struct': 'TraceEventInfo',
44 'data': {'name': 'str', 'state': 'TraceEventState', 'vcpu': 'bool'} }
47 # @trace-event-get-state:
49 # Query the state of events.
51 # @name: Event name pattern (case-sensitive glob).
52 # @vcpu: The vCPU to query (any by default; since 2.7).
54 # Returns: a list of @TraceEventInfo for the matching events
56 # An event is returned if:
58 # - its name matches the @name pattern, and
59 # - if @vcpu is given, the event has the "vcpu" property.
61 # Therefore, if @vcpu is given, the operation will only match per-vCPU events,
62 # returning their state on the specified vCPU. Special case: if @name is an
63 # exact match, @vcpu is given and the event does not have the "vcpu" property,
64 # an error is returned.
70 # -> { "execute": "trace-event-get-state",
71 # "arguments": { "name": "qemu_memalign" } }
72 # <- { "return": [ { "name": "qemu_memalign", "state": "disabled" } ] }
75 { 'command': 'trace-event-get-state',
76 'data': {'name': 'str', '*vcpu': 'int'},
77 'returns': ['TraceEventInfo'] }
80 # @trace-event-set-state:
82 # Set the dynamic tracing state of events.
84 # @name: Event name pattern (case-sensitive glob).
85 # @enable: Whether to enable tracing.
86 # @ignore-unavailable: Do not match unavailable events with @name.
87 # @vcpu: The vCPU to act upon (all by default; since 2.7).
89 # An event's state is modified if:
90 # - its name matches the @name pattern, and
91 # - if @vcpu is given, the event has the "vcpu" property.
93 # Therefore, if @vcpu is given, the operation will only match per-vCPU events,
94 # setting their state on the specified vCPU. Special case: if @name is an exact
95 # match, @vcpu is given and the event does not have the "vcpu" property, an
102 # -> { "execute": "trace-event-set-state",
103 # "arguments": { "name": "qemu_memalign", "enable": true } }
104 # <- { "return": {} }
107 { 'command': 'trace-event-set-state',
108 'data': {'name': 'str', 'enable': 'bool', '*ignore-unavailable': 'bool',