I'm writing a Linux kernel driver for a device that has quite a bit going on and a bunch of interaction from user-space. In order to debug and troubleshoot these interactions I'm storing them in a data array in the driver and need to export this data to user-space via some sort of file node. It'd be great if I could just export the binary data and let user-space parse it into human-readable text but the requirement from other parties involved is to have this done in-driver so one can just cat the file node from the command line and get something readable.
Currently I'm just using a sysfs node but I'm pretty sure that's the wrong place for that sort of thing and I need to able to write out more than PAGE_SIZE of data. What is the proper filesystem object I should be using for this type of thing? I looked at debugfs but it seems to be for more specific things much like sysfs is.
