Messages in this thread | | | Date | Fri, 18 Jun 2021 09:15:49 +0530 | From | Viresh Kumar <> | Subject | Re: [PATCH V2 3/3] cpufreq: CPPC: Add support for frequency invariance |
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On 17-06-21, 14:22, Peter Zijlstra wrote: > On Thu, Jun 17, 2021 at 04:49:36PM +0530, Viresh Kumar wrote: > > Peter: Can you help here on this ? Lemme try to explain a bit here: > > > > We are starting an irq-work (in cppc cpufreq driver) from > > scheduler_tick()->arch_scale_freq_tick(). What will happen if the driver doesn't > > take care of CPU hotplug explicitly and make sure this work isn't queued again > > from the next tick. > > > > Is it important for user to make sure it gets rid of the irq-work during hotplug > > here ? > > irq-work is flushed on hotplug, see smpcfd_dying_cpu().
Thanks Peter.
-- viresh
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