[PATCH] score: Optimize EDF SMP scheduler ops
Sebastian Huber
sebastian.huber at embedded-brains.de
Tue Oct 5 18:49:51 UTC 2021
On 05/10/2021 20:34, Joel Sherrill wrote:
> On Tue, Oct 5, 2021 at 1:26 PM Sebastian Huber
> <sebastian.huber at embedded-brains.de> wrote:
>> The schedule operation is only called by rtems_task_mode(). It is
>> called if preempt mode of the executing thread changes from disabled to
>> enabled. Since the EDF SMP scheduler does not support the disabled
>> preemption mode, the schedule operation is never called.
> Pulling this logic thread further, since disable preemption is not available in
> SMP configurations, why even have this callout at all in SMP mode?
>
> That should ripple up to rtems_task_mode() and eliminate some code also.
If you have only one processor configured and you use a non-SMP
scheduler, then the disabled preemption mode is also supported in SMP
configurations.
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