psi_group_cpu
struct psi_group_cpu __percpu *pcpu;
struct psi_group_cpu *groupc;
cgroup->psi->pcpu = alloc_percpu(struct psi_group_cpu);
static DEFINE_PER_CPU(struct psi_group_cpu, system_group_pcpu);
struct psi_group_cpu *groupc = per_cpu_ptr(group->pcpu, cpu);
static void record_times(struct psi_group_cpu *groupc, u64 now)
struct psi_group_cpu *groupc;
struct psi_group_cpu *groupc = per_cpu_ptr(group->pcpu, cpu);