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From:   Peter Zijlstra <peterz@infradead.org>
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Subject: Re: [RFC PATCH 1/5] numa: introduce per-cgroup numa balancing
 locality, statistic
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On Mon, Apr 22, 2019 at 10:11:24AM +0800, 王贇 wrote:
> +	p->numa_faults_locality[mem_node == numa_node_id() ? 4 : 3] += pages;

Possibly: 3 + !!(mem_node = numa_node_id()), generates better code.