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 theĀ  > impression the timer will always be here on every idle CPU(s). In > theĀ  > 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, Dario -- <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)