slice_timer
static DEFINE_PER_CPU(struct slice_timer, slice_timer);
struct slice_timer *st = container_of(tmr, struct slice_timer, timer);
struct slice_timer *st = this_cpu_ptr(&slice_timer);
struct slice_timer *st = this_cpu_ptr(&slice_timer);
hrtimer_setup(per_cpu_ptr(&slice_timer.timer, cpu), rseq_slice_expired,