Little introduction to debugfs

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I write a little introduction to debugfs

quote from Kernel documentation :

"Debugfs exists as a simple way for kernel developers to make information
available to user space. Unlike /proc, which is only meant for information
about a process, or sysfs, which has strict one-value-per-file rules,
debugfs has no rules at all. Developers can put any information they want
there. The debugfs filesystem is also intended to not serve as a stable
ABI to user space; in theory, there are no stability constraints placed on
files exported there. The real world is not always so simple, though [1];
even debugfs interfaces are best designed with the idea that they will need
to be maintained forever."

in attachment 3 files :

• debugfs_par.txt : the text of the introduction
• kparm_debugfs.txt : a very simple example
• kparm_debugfs_file.txt : Another example, more complex shows you how to create a file in the most general way (with debugfs_create_file) and a blob.

debugfs_par.txt
kparm_debugfs.txt
kparm_debugfs_file.txt