[Xenomai] trigger!!

[Xenomai] trigger!!

[ali hagigat]

I can not change and write /proc/ipipe/trace/trigger.....
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Re: [Xenomai] trigger!!

[Gilles Chanteperdrix]

On 08/26/2014 01:12 PM, ali hagigat wrote:
> I can not change and write /proc/ipipe/trace/trigger.....

See:
http://xenomai.org/2014/06/using-the-i-pipe-tracer/


-- 
                                                                Gilles.

Re: [Xenomai] trigger!!

[Alec Ari]

Which file is this trace output written to?

http://xenomai.org/2014/06/using-the-i-pipe-tracer/#Interpreting_Traces


The documentation is pretty crude, also are these debugging functions part of IPIPE or Xenomai?

Alec

Re: [Xenomai] trigger!!

[Gilles Chanteperdrix]

On 08/26/2014 01:40 PM, Alec Ari wrote:
> Which file is this trace output written to?
> 
> http://xenomai.org/2014/06/using-the-i-pipe-tracer/#Interpreting_Traces
> 
> 
> The documentation is pretty crude,

Maybe, nevertheless it answers Ali's question.

> also are these debugging functions part of IPIPE or Xenomai?

It is named "I-pipe tracer", what do you think?

-- 
                                                                Gilles.

Re: [Xenomai] trigger!!

[Gilles Chanteperdrix]

On 08/26/2014 01:40 PM, Alec Ari wrote:
> Which file is this trace output written to?
> 
> http://xenomai.org/2014/06/using-the-i-pipe-tracer/#Interpreting_Traces
> 
> 
> The documentation is pretty crude, 

But the code is available for all to see:

http://git.xenomai.org/ipipe.git/tree/kernel/ipipe/tracer.c
-- 
                                                                Gilles.

Re: [Xenomai] trigger!!

[ali hagigat]

Sorry to ask it again but the file, /proc/ipipe/trace/trigger, can be
written only once. The documentation says:
"Write an empty string to disable the trigger, "
As far as I tested,  writing empty string to the file , trigger,
returns with error and frozen log continue to become updated
After the initial write I can not write to this file any more even if I do:
echo 0 > /proc/ipipe/trace/enable

Re: [Xenomai] trigger!!

[Gilles Chanteperdrix]

On 08/27/2014 04:47 PM, ali hagigat wrote:
> Sorry to ask it again but the file, /proc/ipipe/trace/trigger, can be
> written only once.

>From looking at the code, I do not think so. It seems to me you can
write to the file as many times as you want.

> The documentation says:
> "Write an empty string to disable the trigger, "
> As far as I tested,  writing empty string to the file , trigger,
> returns with error

The code agrees with this conclusion.

> and frozen log continue to become updated
> After the initial write I can not write to this file any more even if I do:
> echo 0 > /proc/ipipe/trace/enable
> 

Why not trying and writing the name of a function which has no chance of
being triggered, such as "start_kernel" ?

-- 
                                                                Gilles.