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
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