HevPowerCpu

出自龙芯梦兰知识库

HevPowerCpu 是专为 LOonux 3 操作系统开发的与 CPU 相关的电源管理系统层服务，它提供了 CPU 设备的枚举，实现了内核层的 CPUFreq、CPUHotplug与CPUAutoplug接口。

代码仓库：hev-power-cpu.git

目录 1 D-Bus 接口 1.1 hev.power.Cpu.Manager 1.2 hev.power.Cpu.Hotplug 1.3 hev.power.Cpu.Freq 1.4 hev.power.Cpu.Autoplug

D-Bus 接口

hev.power.Cpu.Manager

• Dest: hev.power.Cpu.Manager
• Object Path: /hev/power/Cpu/Manager
• Methods:
  • EnumerateCpus (None) => ao: cpus [Enumerate CPU devices. e.g. /hev/power/Cpu/cpu0]

hev.power.Cpu.Hotplug

• Dest: hev.power.Cpu.Manager
• Object Path: /hev/power/Cpu/cpu0 (e.g. /hev/power/Cpu/cpu1 ...) [Get from hev.power.Cpu.Manager.EnumerateCpus]
• Methods:
  • Enable (None) => b: status [Enable this cpu.]
  • Disable (None) => b: status [Disable this cpu.]
• Properties:
  • Enabled b: status [Cpu online status.]

hev.power.Cpu.Freq

• Dest: hev.power.Cpu.Manager
• Object Path: /hev/power/Cpu/cpu0 (e.g. /hev/power/Cpu/cpu1 ...) [Get from hev.power.Cpu.Manager.EnumerateCpus]
• Methods:
  • SetGovernor (s: governor) => b: status [Set governor.]
• Properties:
  • Governor s: governor [Cpu governor.]

hev.power.Cpu.Autoplug

• Dest: hev.power.Cpu.Manager
• Object Path: /hev/power/Cpu/Autoplug
• Methods:
  • Enable (None) => b: status [Enable autoplug sub system.]
  • Disable (None) => b: status [Disable autoplug sub system.]
  • SetMaxCpus (q: count) => b: status [Set max online cpu count to autoplug sub system.]
  • SetMinCpus (q: count) => b: status [Set min online cpu count to autoplug sub system.]
  • SetSamplingRate (q: value) => b: status [Set sampling rate to autoplug sub system.]
• Properties:
  • Enabled b: status [Is enabled?]
  • MaxCpus q: count [Max online cpu count.]
  • MinCpus q: count [Min online cpu count.]
  • SamplingRate q: value [Current sampling rate.]