Linux Kernel Module Cheat

A more convenient front-end for kthread:

Outcome: count from 0 to 9 infinitely many times

Stop counting:

Source: kernel_modules/workqueue_cheat.c

The workqueue thread is killed after the worker function returns.

We can’t call the module 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

Bibliography: https://github.com/torvalds/linux/blob/v4.17/Documentation/core-api/workqueue.rst