1# -*- mode: python -*- 2# 3# Copyright (C) 2011-2016 Lluís Vilanova <vilanova@ac.upc.edu> 4# 5# This work is licensed under the terms of the GNU GPL, version 2 or later. 6# See the COPYING file in the top-level directory. 7 8## 9# = Tracing 10## 11 12## 13# @TraceEventState: 14# 15# State of a tracing event. 16# 17# @unavailable: The event is statically disabled. 18# 19# @disabled: The event is dynamically disabled. 20# 21# @enabled: The event is dynamically enabled. 22# 23# Since: 2.2 24## 25{ 'enum': 'TraceEventState', 26 'data': ['unavailable', 'disabled', 'enabled'] } 27 28## 29# @TraceEventInfo: 30# 31# Information of a tracing event. 32# 33# @name: Event name. 34# @state: Tracing state. 35# @vcpu: Whether this is a per-vCPU event (since 2.7). 36# 37# An event is per-vCPU if it has the "vcpu" property in the "trace-events" 38# files. 39# 40# Since: 2.2 41## 42{ 'struct': 'TraceEventInfo', 43 'data': {'name': 'str', 'state': 'TraceEventState', 'vcpu': 'bool'} } 44 45## 46# @trace-event-get-state: 47# 48# Query the state of events. 49# 50# @name: Event name pattern (case-sensitive glob). 51# @vcpu: The vCPU to query (any by default; since 2.7). 52# 53# Returns: a list of @TraceEventInfo for the matching events 54# 55# An event is returned if: 56# 57# - its name matches the @name pattern, and 58# - if @vcpu is given, the event has the "vcpu" property. 59# 60# Therefore, if @vcpu is given, the operation will only match per-vCPU events, 61# returning their state on the specified vCPU. Special case: if @name is an 62# exact match, @vcpu is given and the event does not have the "vcpu" property, 63# an error is returned. 64# 65# Since: 2.2 66# 67# Example: 68# 69# -> { "execute": "trace-event-get-state", 70# "arguments": { "name": "qemu_memalign" } } 71# <- { "return": [ { "name": "qemu_memalign", "state": "disabled" } ] } 72# 73## 74{ 'command': 'trace-event-get-state', 75 'data': {'name': 'str', '*vcpu': 'int'}, 76 'returns': ['TraceEventInfo'] } 77 78## 79# @trace-event-set-state: 80# 81# Set the dynamic tracing state of events. 82# 83# @name: Event name pattern (case-sensitive glob). 84# @enable: Whether to enable tracing. 85# @ignore-unavailable: Do not match unavailable events with @name. 86# @vcpu: The vCPU to act upon (all by default; since 2.7). 87# 88# An event's state is modified if: 89# - its name matches the @name pattern, and 90# - if @vcpu is given, the event has the "vcpu" property. 91# 92# Therefore, if @vcpu is given, the operation will only match per-vCPU events, 93# setting their state on the specified vCPU. Special case: if @name is an exact 94# match, @vcpu is given and the event does not have the "vcpu" property, an 95# error is returned. 96# 97# Since: 2.2 98# 99# Example: 100# 101# -> { "execute": "trace-event-set-state", 102# "arguments": { "name": "qemu_memalign", "enable": "true" } } 103# <- { "return": {} } 104# 105## 106{ 'command': 'trace-event-set-state', 107 'data': {'name': 'str', 'enable': 'bool', '*ignore-unavailable': 'bool', 108 '*vcpu': 'int'} } 109