[PATCH] sptests/spsem04: new test case for PIP starvation

[Gedare Bloom]

On Wed, Dec 20, 2017 at 10:58 AM, Gedare Bloom <gedare at rtems.org> wrote:
> On Wed, Dec 20, 2017 at 1:02 AM, Sebastian Huber
> <sebastian.huber at embedded-brains.de> wrote:
>> I think this is already covered by test_inherit_nested_vertical() in
>> spmutex01.
>>
> Thanks for the pointer, you're correct. I need this kind of test for
> some release/maintenance to fix PIP in 4.10 (and checking it on 4.11).
>
FYI: I have this spsem04 on 4.10 and 4.11, and it demonstrates the
broken PIP we know and love.

> I may try to unpack the parts of spmutex01 that are backward-compatible.
>
If I can't easily port backward spmutex01, I may like to add these
tests to the release branches if acceptable.

I intend to implement some solution similar to the one you suggested
in https://devel.rtems.org/ticket/2412

>> --
>> 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
>> PGP     : Public key available on request.
>>
>> Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
>>