Demand unloading a DLKM

Demand unloading is a manual procedure that creates more space in the kernel by unloading modules that aren't being used

• If you know the module identifier, execute:
  
  modadmin -u modid ...

  to unload the module modid. The argument modid is an integer that modadmin assigned to the module as an identifier when it was loaded.

• If you know the module name, execute:
  
  modadmin -U module-name ...

  More than one modid or module-name can be supplied on the command line.

If the module is not being used, and if no other loaded module depends on it, it is unloaded. If the module is being used, or if another loaded module references symbols defined in the module, it is not unloaded. However, the module will be available for the next auto-unload. See modadmin(1M).