Participation in GSoC 2016

[Sebastian Huber]

On 16/03/16 22:11, Chris Johns wrote:
> On 16/03/2016 23:01, Darshit Shah wrote:
>> I have updated my draft proposal with a basic timeline for things that
>> need to be done. The link is shared on the tracking page and has been
>> submitted via the program website as well. I'm sharing it here as well:
>> https://goo.gl/UmgS61
>>
>> Since this is a draft proposal, it may not be completely polished yet.
>> I'd appreciate any comments on it, especially the project description
>> and timeline.
>>

" POSIX mandated processor affinityAPI"

This is actually not defined in POSIX. Its a non-portable Linux/BSD 
extension.

"schedulable task sets would miss their deadlines since it does not 
consider migrating high priority tasks"

I think this is not correct. The current APA scheduler should implement 
strong APA. However, it may iterate several times over all (!) ready 
tasks. This is the actual problem.

I would use the name "APA" for the new scheduler, e.g. schedulerapasmp.c.

We already have a ticket for this work:

https://devel.rtems.org/ticket/2510

With respect to the tests. In addition to worst case task sets, we have 
to define task sets that cover the basic operations and the corner 
cases. I suggest to use test driven development once the data structures 
and algorithm is clear. Start with a simple test and implement 
everything so that this test passes. Continue until everything is fine.

>
> Looking good.
>
> Could you please add something about the method of testing you plan to 
> use? Not the tests just the set up details, eg is this with the 
> scheduler simulator, qemu, or real hardware or all listed plus also 
> which architectures?

We can use Qemu and the hardware here in our office.

-- 
Sebastian Huber, embedded brains GmbH

Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone   : +49 89 189 47 41-16
Fax     : +49 89 189 47 41-09
E-Mail  : sebastian.huber at embedded-brains.de
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Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.