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Community/Discussion/General/question for procnto-booke and procnto-booke-instr kernels/List of Posts
Forum Topic - question for procnto-booke and procnto-booke-instr kernels: (5 Items)
   
Update
Chris Liang(deleted)
02/07/2019 6:39 PM
post119492
question for procnto-booke and procnto-booke-instr kernels   
Hi all,

a quick question.

If I wrote program running on procnto-booke kernel, does the program also be able to run on procnto-booke-instr kernel 
if I changed BSP image from procnto-booke to procnto-booke-instr?

Thanks
Albrecht Uhlmann
02/08/2019 7:33 AM
post119493
Re: question for procnto-booke and procnto-booke-instr kernels   
To my understanding, no modifications are necessary. Just replace boot image and reboot target.

There could be restrictions the other way round: If you place calls to TRACE_EVENT in your code these functions will 
fail if executed on a non-instrumented kernel.

-Al
Chris Liang(deleted)
02/08/2019 10:15 AM
post119495
Re: question for procnto-booke and procnto-booke-instr kernels   
> To my understanding, no modifications are necessary. Just replace boot image 
> and reboot target.
> 
> There could be restrictions the other way round: If you place calls to 
> TRACE_EVENT in your code these functions will fail if executed on a non-
> instrumented kernel.
> 
> -Al

Hi Albrecht,

Thanks replying.

Then, it is weird. After I replace with instr kernel image, some of my processes become zombies. any idea?
Albrecht Uhlmann
02/08/2019 10:43 AM
post119496
Re: question for procnto-booke and procnto-booke-instr kernels   
In that case we would need more information.

- can you post the build script that you use to create the boot image?
- are you sure all settings/env vars etc. are the same, only procnto replaced with instrumented version?
- How are you launching you processes?
- How do they terminate? (external signal, from their own)?

It might be possible that the instrumented procnto behaves differently regarding process termination, maybe someone from
 QNX can comment on this after reviewing your data.

Regards,
-Al
Chris Liang(deleted)
02/08/2019 11:43 AM
post119498
Re: question for procnto-booke and procnto-booke-instr kernels   
> In that case we would need more information.
> 
> - can you post the build script that you use to create the boot image?
> - are you sure all settings/env vars etc. are the same, only procnto replaced 
> with instrumented version?
> - How are you launching you processes?
> - How do they terminate? (external signal, from their own)?
> 
> It might be possible that the instrumented procnto behaves differently 
> regarding process termination, maybe someone from QNX can comment on this 
> after reviewing your data.
> 
> Regards,
> -Al

To be honest, I dont think the env variable or settings are same, cuz i just tried to load with procnto. it still fails 
some of my processes.

Thanks

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