Hi Dave, Thinking about backward compatibility, would displaying "ONLINE CPUS" still seem OK for the case where kernel_init() finds the smp_num_cpus symbol (as for a 2.4 kernel)? Before there were the various cpu maps, I think smp_num_cpus was analogous to the possible cpus as opposed to online. I can see this requiring some thought as to what CPUS in the output means when you have various different maps now (online, possible, and present). That being said, it would be good to leave no doubt and explicitly state the count is for the present or online CPUS with the latter being my suggestion. I forgot to mention that I suspect the problem I mentioned before would get stranger for POWER7 which offers 4 threads per core. I didn't have access to a POWER7 machine to see just what it would do if we tried disabling SMT as before but it follows the same pattern the count displayed would be way off from the online count.