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Re: [Xen-devel] [PATCH v3 3/6] xen: RCU/x86/ARM: discount CPUs that were idle when grace period started.

To: "Dario Faggioli" <dario.faggioli@xxxxxxxxxx>
From: "Jan Beulich" <JBeulich@xxxxxxxx>
Date: Tue, 22 Aug 2017 06:59:25 -0600
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wei.liu2@xxxxxxxxxx>, George Dunlap <George.Dunlap@xxxxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Ian Jackson <ian.jackson@xxxxxxxxxxxxx>, Tim Deegan <tim@xxxxxxx>, Julien Grall <julien.grall@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
Delivery-date: Tue, 22 Aug 2017 12:59:34 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

>>> On 18.08.17 at 20:04, <dario.faggioli@xxxxxxxxxx> wrote:
> Changes from v2:
> * initialize idle_cpumask to "all clear", i.e., all the CPUs are busy;
>   they'll clear their bit out themselves as soon as the run the idle
>   loop (pretty soon anyway).

Just to make sure I correctly understand this - you really mean
"they'll set their bit themselves ..."?

Jan


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References:
- [Xen-devel] [PATCH v3 0/6] xen: RCU: x86/ARM: Add support of rcu_idle_{enter, exit}
  - From: Dario Faggioli
- [Xen-devel] [PATCH v3 3/6] xen: RCU/x86/ARM: discount CPUs that were idle when grace period started.
  - From: Dario Faggioli

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