kthread, timer

kernel_module/workqueue_cheat.c

@@ -10,6 +10,8 @@ Creates a separate thread. So init_module can return, but some work will still g
 Can't call this just workqueue.c because there is already a built-in with that name:
 https://unix.stackexchange.com/questions/364956/how-can-insmod-fail-with-kernel-module-is-already-loaded-even-is-lsmod-does-not
 
+Workqueues are a convenience frontend for kthreads.
+
 Bibliography:
 
 - https://www.ibm.com/developerworks/library/l-tasklets/