Re: [PATCH 03/10] smp,cpumask: introduce on_each_cpu_cond_mask

[Andy Lutomirski]

On Sat, Jul 28, 2018 at 2:53 PM, Rik van Riel <riel@xxxxxxxxxxx> wrote:
> Introduce a variant of on_each_cpu_cond that iterates only over the
> CPUs in a cpumask, in order to avoid making callbacks for every single
> CPU in the system when we only need to test a subset.

Nice.

Although, if you want to be really fancy, you could optimize this (or
add a variant) that does the callback on the local CPU in parallel
with the remote ones.  That would give a small boost to TLB flushes.