Question about the task scheduler on PowerPC platform.

[Sebastian Huber]

On 12/10/17 06:58, Qq wrote:
> Since the PowerPC architecture has 'Timer/Decrementer Registers', is it possible for these registers to be used
>
> as a clock tick?

The decrementer is used on some PowerPC BSPs by the clock driver. 
However, on systems with a priority based interrupt controller and the 
use of nested interrupts this is a bad choice since the decrementer 
exception doesn't honour the priority scheme of the interrupt 
controller. On these BSPs, a peripheral timer is used.

-- 
Sebastian Huber, embedded brains GmbH

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