[PATCH 4/4] score: Use Resource Handler for MrsP semaphores

[Joel Sherrill]

On Jun 2, 2014 9:28 AM, Sebastian Huber <sebastian.huber at embedded-brains.de> wrote:
>
> On 2014-06-02 15:24, Joel Sherrill wrote:
> > Does this resource tracking replace the code for strict order mutex?
>
> No, the MrsP (and maybe later the Migratory Priority Inheritance) semaphores
> are completely separate.
>
> In theory it is possible to use it also for the uni-processor semaphores, but I
> am not sure if its worth to add this overhead.  The implementation with the
> resource count is analytically not correct, but very efficient.  Was this
> really a source for trouble in the last 20 years or so?

Not from a performance viewpoint but from a system end to end priority analysis, it is less than ideal.

> --
> Sebastian Huber, embedded brains GmbH
>
> Address : Dornierstr. 4, D-82178 Puchheim, Germany
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>
> Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
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