1# -*- mode: python -*- 2# vim: filetype=python 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# = Tracing 11## 12 13## 14# @TraceEventState: 15# 16# State of a tracing event. 17# 18# @unavailable: The event is statically disabled. 19# 20# @disabled: The event is dynamically disabled. 21# 22# @enabled: The event is dynamically enabled. 23# 24# Since: 2.2 25## 26{ 'enum': 'TraceEventState', 27 'data': ['unavailable', 'disabled', 'enabled'] } 28 29## 30# @TraceEventInfo: 31# 32# Information of a tracing event. 33# 34# @name: Event name. 35# @state: Tracing state. 36# @vcpu: Whether this is a per-vCPU event (since 2.7). 37# 38# An event is per-vCPU if it has the "vcpu" property in the "trace-events" 39# files. 40# 41# Since: 2.2 42## 43{ 'struct': 'TraceEventInfo', 44 'data': {'name': 'str', 'state': 'TraceEventState', 'vcpu': 'bool'} } 45 46## 47# @trace-event-get-state: 48# 49# Query the state of events. 50# 51# @name: Event name pattern (case-sensitive glob). 52# @vcpu: The vCPU to query (any by default; since 2.7). 53# 54# Returns: a list of @TraceEventInfo for the matching events 55# 56# An event is returned if: 57# 58# - its name matches the @name pattern, and 59# - if @vcpu is given, the event has the "vcpu" property. 60# 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. 65# 66# Since: 2.2 67# 68# Example: 69# 70# -> { "execute": "trace-event-get-state", 71# "arguments": { "name": "qemu_memalign" } } 72# <- { "return": [ { "name": "qemu_memalign", "state": "disabled", "vcpu": false } ] } 73# 74## 75{ 'command': 'trace-event-get-state', 76 'data': {'name': 'str', '*vcpu': 'int'}, 77 'returns': ['TraceEventInfo'] } 78 79## 80# @trace-event-set-state: 81# 82# Set the dynamic tracing state of events. 83# 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). 88# 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. 92# 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 96# error is returned. 97# 98# Since: 2.2 99# 100# Example: 101# 102# -> { "execute": "trace-event-set-state", 103# "arguments": { "name": "qemu_memalign", "enable": true } } 104# <- { "return": {} } 105# 106## 107{ 'command': 'trace-event-set-state', 108 'data': {'name': 'str', 'enable': 'bool', '*ignore-unavailable': 'bool', 109 '*vcpu': 'int'} } 110