Re: [PATCH v3 4/4] arm64: support batched/deferred tlb shootdown during page reclamation

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On 8/22/22 13:51, Yicong Yang wrote:
> +static inline bool arch_tlbbatch_should_defer(struct mm_struct *mm)
> +{
> +	return true;
> +}

This needs to be conditional on systems, where there will be performance
improvements, and should not just be enabled all the time on all systems.
num_online_cpus() > X, which does not hold any cpu hotplug lock would be
a good metric ?




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