timer_buckets
timer_buckets = alloc_large_system_hash("posixtimers", sizeof(*timer_buckets),
spin_lock_init(&timer_buckets[i].lock);
INIT_HLIST_HEAD(&timer_buckets[i].head);
return &timer_buckets[jhash2((u32 *)&sig, sizeof(sig) / sizeof(u32), nr) & timer_hashmask];