About Periodic Tasks

Adam Lackorzynski adam at os.inf.tu-dresden.de
Wed Apr 21 10:13:10 CEST 2010


Hi,

On Mon Apr 19, 2010 at 23:30:07 +0900, Jungwoo Yang wrote:
> 
> res_rt_s|  Error: l4_rt_next_period(): Unknown (unregistered) error
> res_rt_s| [A.3] cpu_reserve/examples/res_rt_sched/main.c:77:worker():
> res_rt_s|  Error: l4_rt_next_period(): Unknown (unregistered) error
> res_rt_s| [A.3] cpu_reserve/examples/res_rt_sched/main.c:77:worker():
> 
> When I tried to figure out the error. The problem is from "l4_rt_next_period()".  It returns 0x20 error "L4_IPC_RETIMEOUT".
> I've found the error from "l4cpu_reserve_wait_periodic()" in cpu_reserved server.
> The function returns 0 if the IPC returns "L4_IPC_RETIMEOUT", so I thought that "L4_IPC_RETIMEOUT" is not real error at that time.
> But when I execute the compoent "res_rt_sched", it look like that it is not a periodic task.

Those parts haven't been touched in a while. How did you find out that
the mode is not like it should be?



Adam
-- 
Adam                 adam at os.inf.tu-dresden.de
  Lackorzynski         http://os.inf.tu-dresden.de/~adam/




More information about the l4-hackers mailing list