
atomic_{get, set}64() are problematic on architectures without 64 bit compare and swap. Also, using sequential lock instead of atomic access ensures that any reads from cpu_ent::active_time won't require any writes to shared memory.
atomic_{get, set}64() are problematic on architectures without 64 bit compare and swap. Also, using sequential lock instead of atomic access ensures that any reads from cpu_ent::active_time won't require any writes to shared memory.