On 2014-04-16 16:23, Sebastian Huber wrote:
On 2014-04-16 16:17, Gedare Bloom wrote:
> o support for a priority boost to fix priority inheritance across scheduler
>boundaries,
>
It would also be great if this might fix
https://www.rtems.org/bugzilla/show_bug.cgi?id=2124
The bug may apply to SMP scheduling, but I have not thought that hard about it.
It is not related to this bug. What I want to address is described in "The
limits of priority inheritance", page 125, Björn B. Brandenburg, Scheduling and
Locking in Multiprocessor Real-Time Operating Systems, 2011.
After some more research I think that priority boosting is a very bad solution.
I will now try to implement Migratory Priority Inheritance:
https://www.mpi-sws.org/~bbb/papers/pdf/rtlws12.pdf
This will be a bit difficult though, since now a thread may be temporarily
assigned to multiple schedulers.
--
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.hu...@embedded-brains.de
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Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
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