From: George Dunlap <george.dunlap@eu.citrix.com>
To: Nathan Studer <nate.studer@dornerworks.com>
Cc: Simon Martin <smartin@milliways.cl>,
Ian Campbell <ian.campbell@citrix.com>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
Ian Jackson <ian.jackson@eu.citrix.com>,
Robert VanVossen <robert.vanvossen@dornerworks.com>,
xen-devel@lists.xen.org
Subject: Re: [PATCH 2/3] arinc: Add cpu-pool support to scheduler.
Date: Tue, 19 Nov 2013 11:30:16 +0000 [thread overview]
Message-ID: <528B4BC8.4000300@eu.citrix.com> (raw)
In-Reply-To: <1384805814-3597-3-git-send-email-nate.studer@dornerworks.com>
On 11/18/2013 08:16 PM, Nathan Studer wrote:
> From: Nathan Studer <nate.studer@dornerworks.com>
>
> 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@dornerworks.com>
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@eu.citrix.com>
next prev parent reply other threads:[~2013-11-19 11:30 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-18 20:16 [PATCH 0/3] arinc: Implement cpu-pool support Nathan Studer
2013-11-18 20:16 ` [PATCH 1/3] arinc: whitespace and formatting fixes Nathan Studer
2013-11-19 9:54 ` Andrew Cooper
2013-11-19 11:30 ` George Dunlap
2013-11-18 20:16 ` [PATCH 2/3] arinc: Add cpu-pool support to scheduler Nathan Studer
2013-11-19 10:30 ` Andrew Cooper
2013-11-19 11:18 ` George Dunlap
2013-11-19 11:33 ` Andrew Cooper
2013-11-19 13:01 ` Nate Studer
2013-11-19 13:58 ` Nate Studer
2013-11-19 14:04 ` Nate Studer
2013-11-19 18:16 ` Andrew Cooper
2013-11-19 11:30 ` George Dunlap [this message]
2013-11-18 20:16 ` [PATCH 3/3] arinc: Add poolid parameter to scheduler get/set functions Nathan Studer
2013-11-19 10:32 ` Andrew Cooper
2013-11-19 11:32 ` George Dunlap
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