Merge pull request #63 from OlegH-ua/lesson04

Lesson04

04-KernelModule/README.md

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+# Homework:
+
+Create a simple Kernel module:
+
+1. Create a simple module (source and makefile).
+2. Add some debug prints.
+3. Check your source with the checkpatch.pl
+4. Add module parameter and implement different module_init return codes dependent on this parameter (OK/Error).
+5. Get kernel logs for both cases. And add them to projects.
+
+Example of log:
+```
+$ sudo dmesg -c
+...
+< start log >
+$ sudo insmod mymodule.ko
+$ sudo lsmod | grep mymodule
+$ sudo rmmod mymodule
+$ sudo dmesg
+< end log >
+```