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An amazing directory: /proc (sh.itjust.works)
submitted 2 months ago by to c/linux@lemmy.ml
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[–] 5 points 2 months ago (1 child)

I may have been through "SysFS" as well? In /sys/class you can setup char dev IO with a kernel module (and more). Very helpful for userspace <-> kernel communication (like DMA drivers for userspace applications)

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  • [–] 4 points 2 months ago

    Hmm yeah maybe it was /sys, it’s been so long I can’t remember.

    I seem to recall echoing into a file to set some value which we then checked the value of in the kernel module code. It was just a hello world type of thing for a college class.

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