I'm not sure it's worth describing all possible device/bus specific kernel
   threads. Generally such threads are used if the driver needs to do something
   that needs sleeping and should not happen synchronous. For pcmcia adaptors
   for example it is watching for card insertion/removal.


i disagree.  if something is important enough to need a kernel thread
then the man page for it should meantion such.  eg, all the driver
man pages should meantion it.  there are a limited number of non-driver
kernel threads, and they also should have man pages with the same name.


.mrg.