Re: [Xen-devel] [PATCH 2/3] arinc: Add cpu-pool support to scheduler.

[George Dunlap <george.dunlap@xxxxxxxxxxxxx>]

On 11/18/2013 08:16 PM, Nathan Studer wrote:
> From: Nathan Studer <nate.studer@xxxxxxxxxxxxxxx>
>
> 1.  Remove the restriction that dom0 must be in the schedule, since dom-0 may
> not belong to the scheduler's pool.
> 2.  Add a schedule entry for each of dom-0's vcpus as they are created.
> 3.  Add code to deal with empty schedules in the do_schedule function.
> 4.  Call the correct idle task for the pcpu on which the scheduling decision
> is being made in do_schedule.
> 5.  Add code to prevent migration of a vcpu.
> 6.  Implement a proper cpu_pick function, which prefers the current processor.
>
> These changes do not implement arinc653 multicore.  Since the schedule only
> supports 1 vcpu entry per slot, even if the vcpus of a domain are run on
> multiple pcpus, the scheduler will essentially serialize their execution.
>
> Signed-off-by: Nathan Studer <nate.studer@xxxxxxxxxxxxxxx>
If this were a change to one of the main schedulers I think I would say 
that it was too late for such an intrusive change.  But at the moment, I 
don't think there are other users of this code, so I'm inclined to be 
more permissive.
Unless someone wants to argue otherwise:

Release-acked-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>



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