[Xenomai] powerpc 440 userspace latency test does nothing

Steven Seeger steven.seeger at nasa.gov
Sat Dec 5 10:55:50 CET 2015


Just to add more info, the issue is that the read() call from the timerfd 
never returns. I've never seen this occur before. 

Steven

On Saturday, December 05, 2015 03:02:38 Steven Seeger wrote:
> Hey guys.
> 
> I am running a virtex5 ml507 board from Xilinx configured to use the
> internal powerpc 440 processor in the FPGA. I compiled a 3.18.20 kernel and
> patched it and build xenomai 3.0.1.
> 
> I am able to run latency -t 1 and latency -t 2
> 
> When I try to run just latency, however, I get no results. It seems like
> userspace threads are not ever waking up. Here's the result of cat
> /proc/xenomai/sched/stat:
> 
> SCLINUX: / # cat /proc/xenomai/sched/stat
> CPU  PID    MSW        CSW        XSC        PF    STAT       %CPU  NAME
>   0  0      0          3240214    0          0     00018000  100.0  [ROOT]
>   0  898    1          1          5          0     000680c0    0.0  latency
>   0  900    1          2          5          0     00068042    0.0 
> display-898 0  901    2          3          7          0     0004c042   
> 0.0  sampling-898 0  0      0          3245052    0          0     00000000
>    0.0  [IRQ512: [timer]]
> 
> Before I spend too much time tearing into this I wanted to ask if anyone's
> seen this issue before.
> 
> It should be noted that clocktest runs fine. switchtest runs. xeno-test just
> sits there though.
> 
> Thanks,
> Steven





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