Re: [PATCH v2 3/7] xen: cpupool: add a back-pointer from a scheduler to its pool

[Jürgen Groß <jgross@xxxxxxxx>]

On 28.05.20 23:29, Dario Faggioli wrote:
> If we need to know within which pool a particular scheduler
> is working, we can do that by querying the cpupool pointer
> of any of the sched_resource-s (i.e., ~ any of the CPUs)
> assigned to the scheduler itself.
>
> Basically, we pick any sched_resource that we know uses that
> scheduler, and we check its *cpupool pointer. If we really
> know that the resource uses the scheduler, this is fine, as
> it also means the resource is inside the pool we are
> looking for.
>
> But, of course, we can do that for a pool/scheduler that has
s/can/can't/ ?

> not any been given any sched_resource yet (or if we do not
> know whether or not it has any sched_resource).
>
> To overcome such limitation, add a back pointer from the
> scheduler, to its own pool.
>
> Signed-off-by: Dario Faggioli <dfaggioli@xxxxxxxx>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen