I've heard of lines of code that are distributed with the Linux Kernel that aren't open. Maybe some drivers or something like that.
I'd like to know how much of that is true? Are there lines of code that are distributed with the Kernel (as when you download it from kernel.org) that aren't open at all? And how much that is of the total (if there's a way to know it, number of lines or percentage)?
And where can I find more information about this? Maybe some articles to read...
Thank you very much!