On 12/09/2011 09:15 AM, Wolfgang Grandegger wrote:
> On 12/09/2011 09:03 AM, k...@ixxat.de wrote:
>> I plan to spend some time today tracking down the problem. I am most
>> curious to discover if there is a problem in the msg returned from
>> send_dump_request().
>>
>> $ sudo ./canconfig can0 state
>> can0 state: STOPPED
>> $ sudo ./canconfig can1 state
>> can1 state: STOPPED
>> $ "
>> can2: failed to get state
>> $ sudo ./canconfig can3 state
>> can3: failed to get state
>
> OK, what does strace tell you. Is there a system call failing with "-1"?
> Also ftrace could give some hint (assuming that ftrace and function
> tracing is enabled in you kernel):
>
> # mount -tdebugfs none /sys/kernel/debug/
> # cd /sys/kernel/debug/tracing/
> # echo function > current_tracer
> # echo "can_*" > set_ftrace_filter
> # cat set_ftrace_filter
> # echo 0 > trace
# echo 1 > tracing_on
might also be necessary (usually it on by default).
Wolfgang.
_______________________________________________
Socketcan-core mailing list
Socketcan-core@lists.berlios.de
https://lists.berlios.de/mailman/listinfo/socketcan-core
