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Re: [Xen-devel] [PATCH 1 of 3] Support of getting scheduler defaults

  • To: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
  • From: Juergen Gross <juergen.gross@xxxxxxxxxxxxxx>
  • Date: Tue, 22 May 2012 14:29:34 +0200
  • Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Tue, 22 May 2012 12:30:00 +0000
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  • List-id: Xen developer discussion <xen-devel.lists.xen.org>

On 05/22/2012 02:22 PM, Ian Campbell wrote:
On Tue, 2012-05-22 at 10:16 +0100, Juergen Gross wrote:
Support a new sysctl schedop sub-command to get the scheduling defaults of a
specific scheduler.
Why is XEN_DOMCTL_SCHEDOP_getinfo not sufficient here?

Isn't it actually more useful/meaningful to get the current actual
setting rather than a default?

When setting the parameters from the config file we have no domain yet which
we would have to specify for XEN_DOMCTL_SCHEDOP_getinfo. I didn't want to
parse part of the config only after domain creation.

A default should be okay, as this is what we want to modify. :-)
The scheduler should initialize a new domain with this default, of course.


Juergen Gross                 Principal Developer Operating Systems
PDG ES&S SWE OS6                       Telephone: +49 (0) 89 3222 2967
Fujitsu Technology Solutions              e-mail: juergen.gross@xxxxxxxxxxxxxx
Domagkstr. 28                           Internet: ts.fujitsu.com
D-80807 Muenchen                 Company details: ts.fujitsu.com/imprint.html

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