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Re: [Xen-devel] [PATCH 5/5] xen: RCU: avoid busy waiting until the end of grace period.

On Tue, 2017-08-01 at 11:22 +0100, Julien Grall wrote:
> On 01/08/17 10:17, Dario Faggioli wrote:
> > As soon as this (callbacks being invoked) will have happened, we
> > won't
> > interrupt it any longer.
> > 
> > And idle CPUs _without_ queued RCU callbacks, won't be interrupted
> > at
> > all.
> Oh, the commit message is not clear about it. The wording gives the 
> impression the timer will always be here on every idle CPU(s). In
> the 
> case on active CPU(s) you specific mention the end of the grace
> period.
Ok, I'll try to improve the changelog and resend.

Thanks and Regards,
<<This happens because I choose it to happen!>> (Raistlin Majere)
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

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