Module 5 of 8

Kernel & Driver Development

Character and block device drivers, interrupt handling, DMA, device trees, and the modern driver model with sysfs and udev integration.

4 lessons

~32 hours

200 XP

Build a complete character driver with file_operations, ioctl, poll, async notification, and proper reference counting.

Implement a block driver with blk-mq, request queues, bio submission, and understand I/O schedulers and elevator algorithms.

Handle hardware interrupts, defer work with tasklets, workqueues, and threaded IRQs, and set up coherent and streaming DMA mappings.

Describe hardware in device tree bindings, write platform drivers with probe/remove, and handle ACPI enumeration for x86.