kernel_module_learn/README.md

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## Setup env
On NixOS:
- Ensure Linux Kernel is the same as you configuration.
Otherwise, change linux_dev variable with you kernel variant and change flake.lock nixpkgs with your version.
- Use direnv allow or nix develop to setup shell.
On other distro
- You need to setup LINUX_MODULES_FOLDER to linux modules folder of your distro (ex: `/lib/modules/$(uname -r)/build`)
-
## make : targets list
- all : Compiling kernel
- clean : Cleaning build folder
All subfolder is configured to use LINUX_MODULES_FOLDER env variable set by flake develop
## How test module
Step 1: Load module
```bash
sudo insmod [module_name].ko
```
**Warning**: Can fail if secure boot is enabled
Step 2: Check logs
```bash
sudo dmesg | tail
```
Step 3: Unload module
```bash
sudo rmmod [module_name].ko
```