cpuset: specify that we're printing a list of cpus, not a mask

[gallatin]

Summary

The output of cpuset(1) can be confusing, as it refers to a "mask" when printing a list of CPUs. This is especially confusing when printing the affinity of a thread which is bound to CPU 15, CPU 31, etc. It is easy to interpret such a number as a mask, and think that the thread can run on CPUs 0..3 when it is really bound to CPU 15. To remedy the confusion, clarify that we're printing a list, not a bitmask.

[• hselasky]

should cpu be uppercased: CPU list?

[cem]

I'm on board with the general idea. The manual page sometimes calls it a CPU list as well.

[jhb]

usr.bin/cpuset/cpuset.c

253

I would probably go with "CPU" over "cpu", but that's just a nit.