Implementing PowerManagment for a ppc target

[Sylvain Munaut <tnt@246tNt.com>]

Hi,

I'm trying to implement Deep Sleep support for a ppc platform based on 
5200 and I have some questions :

 - How should I "integrate" it to linux, what the proper way ? I've been 
trying #defining CONFIG_PM and
   using the set_pm_ops operation but my call backs never get called 
when doing a echo standby > /sys/power/state

It justs says :

$ echo standby > 
/sys/power/state                                                                     

Stopping tasks: 
===                                                                                   

 stopping tasks failed (2 tasks 
remaining)                                                           
Restarting tasks...<6> Strange, init not 
stopped                                                     
 Strange, sh not 
stopped                                                                              

 done                                                                                                 

Stopping tasks: 
===                                                                                   

 stopping tasks failed (2 tasks 
remaining)                                                           
Restarting tasks...<6> Strange, init not 
stopped                                                     
 Strange, sh not 
stopped                                                                              

 done                 

I've been trying to look at Documentation/ and the sources but still I'm 
not sure ...


 - How can I ensure that one of my function runs out of I Cache ? Some 
pieces of assembler needs to not
   acces memory when the last 'orders' are sent. Does just keeping it 
small and aligned enough ?
 

Thanks,

    Sylvain Munaut