CPUFreq HAL [PSARC/2007/679 FastTrack timeout 12/12/2007]

[Anup Pemmaiah]

Artem Kachitchkine wrote:
>
>>> What happens when CPUs are DR removed/added ?
>> The associated device objects should get removed.
>
> Will that be achieved via DR sysevents or some other mechanism?
>
>> The CPUFreq interface is associated with the "computer" device 
>> object, similar to system power management interface. Since it is 
>> global there will be just one method call.
>
> OK, so based on our little q&a, things missing from the interface table:
>
> - DBus interface name (org.freedesktop.Hal.Device.CPUFreq?)
> - DBus path of the objects that implement that interface 
> (/org/freedesktop/Hal/devices/computer?)
> - "processor" capability for processor objects
> - I think also "cpufreq_control" capability for the computer object
Have updated the psarc draft with the missing interfaces. I am pasting 
below the additional interfaces added to the draft

The processor specific properties interface
  Interface        Type             Comments
   ---------------------------------------------------------------
info.capabilities    string list    value = "processor"


    The computer device object specific properties interface. If the 
property
    already exists, then the following values will get appended

   Interface        Type             Comments
   ---------------------------------------------------------------
   info.capabilities    string list    value = "cpufreq_control"
   info.interfaces    string list    value = 
"org.freedesktop.Hal.Device.CPUFreq"
   info.addons        string list    value = "hald-addon-cpufreq"   

   D-Bus specific Information
   ---------------------------

  Interface Name:        org.freedesktop.Hal.Device.CPUFreq
           
  Path to device object        /org/freedesktop/Hal/devices/computer
  that implements the
  interface

Interfaces Imported:

   Interface                                                            
    Comments
   
-----------------------------------------------------------------------------------------------------------
  PM_GET_CPU_THRESHOLD       Used by GetCPUFreqPerformance to determine the
                                                              frequency 
performance.
    
   PM_GET_SYSTEM_THRESHOLD     Used by GetCPUFreqPerformance to 
determine the
                                                                      
frequency performance.


   PM_GET_CPUPM_STATE            Used by GetCPUFreqGovernor to determine 
the
                                                             current 
system policy.

   PM_GET_PM_STATE                    Used by GetCPUFreqGovernor to 
determine the
                                                             current 
system policy.


The new draft can be found at
http://sac.eng/arc/PSARC/2007/679/materials/spec.v1.txt

Thanks
Anup
>
> Could you also place a copy of hal-spec.html in the case directory, 
> because the one at freedesktop.org changes frequently.
>
> thanks,
> -Artem