Re: [Xen-devel] [PATCH for 4.5 v4 1/4] xen: add real time scheduler rtds

[George Dunlap <george.dunlap@xxxxxxxxxxxxx>]

On 09/24/2014 02:32 PM, Jan Beulich wrote:
> > > > On 24.09.14 at 15:14, <dario.faggioli@xxxxxxxxxx> wrote:
> > On mer, 2014-09-24 at 13:09 +0100, Jan Beulich wrote:
> > > Furthermore the function appears to lack serialization with other
> > > scheduler operations.
> > Not sure what you mean here. There's only one lock serializing
> > everything in this scheduler, and it's already taken when this is
> > called, the only exception being when it's called from rt_alloc_vdata().
> >
> > Is it that one you're referring to?
> No. The call path do_domctl() -> sched_adjust() -> rt_dom_cntl()
> doesn't take any scheduler related locks afaics.
Indeed.

 -George

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