lruvec_stats_percpu
struct lruvec_stats_percpu;
struct lruvec_stats_percpu __percpu *lruvec_stats_percpu;
free_percpu(pn->lruvec_stats_percpu);
pn->lruvec_stats_percpu = alloc_percpu_gfp(struct lruvec_stats_percpu,
if (!pn->lruvec_stats_percpu)
struct lruvec_stats_percpu *lstatc;
lstatc = per_cpu_ptr(pn->lruvec_stats_percpu, cpu);
this_cpu_add(pn->lruvec_stats_percpu->state[i], val);