[Xenomai] powerpc 440 userspace latency test does nothing

Steven Seeger steven.seeger at nasa.gov
Sat Dec 5 09:02:38 CET 2015


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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