#9535 HIGH 1.5-sof: need multicast group wakeups using the 8686 for wake-on-wlan vs collaboration

[Zarro Boogs per Child]

#9535: need multicast group wakeups using the 8686 for wake-on-wlan vs
collaboration
------------------------------+---------------------------------------------
           Reporter:  cjb     |       Owner:  dsaxena           
               Type:  defect  |      Status:  new               
           Priority:  high    |   Milestone:  1.5-software-later
          Component:  kernel  |     Version:  not specified     
         Resolution:          |    Keywords:                    
        Next_action:  design  |    Verified:  0                 
Deployment_affected:          |   Blockedby:                    
           Blocking:          |  
------------------------------+---------------------------------------------
Changes (by martin.langhoff):

 * cc: greenfeld (added)


Comment:

 Discussed with pgf yesterday...

  * Yes, this is super-efficient as is. I strace'd netstat and it reads a
 file in proc. Actually, straced & timed it again right now and it's all of
 65ms . On XO we use LANG=C and I assume powerd runs under that env --
 otherwise we pay for attempting to read locale stuff.
  * No, have not tested on XO-1. Aggressive suspend seems to be broken on
 XO-1 -- at least #10232 (do we have an "aggressive suspend issues on XO-1"
 metabug?). Would be good to check quickly that we don't break things
 further.

 For those tests on XO-1, it'd be important to know how to enable logging
 in powerd, and where the logging goes. As of os852, I've followed the
 (very nice) documentation about using powerd-config but could not get any
 logging. I stopped the service, restarted it, ran it straight from the
 console, even ran it under bash -x. It'd at most give me a trace of its
 startup, but seemed to close its stderr on me so the interesting traces /
 debug logs I've never seen...

-- 
Ticket URL: <http://dev.laptop.org/ticket/9535#comment:37>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system