Messages in this thread | | | Date | Thu, 17 Jun 2021 14:22:28 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH V2 3/3] cpufreq: CPPC: Add support for frequency invariance |
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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().
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