I'm really really tired of people saying that there's no documentation for the Linux kernel all the time. Always it comes from people who never even looked for it in the first place.

The kernel comes with loads of documentation in the (duh) Documentation/ directory of the kernel source tree.

Just today, I ran into a place where the running kernel provided a README for me to use, just do:
cat /sys/kernel/debug/tracing/README
to see it.
+Steven Rostedt you rock.

- Edit -
People, I'm talking about "basic" documentation questions here. Here's a sample of what I was asked in just the past 2 weeks:
- where is the documentation on how to build the kernel
- where is the documentation on how the kernel development process works
- where is the documentation on how to get involved in the kernel
- where is the documentation on how to send a patch
- where is the documentation on how to get a patch into the stable kernel
- where is the documentation on what kinds of patches go into the stable kernel
- where is the documentation on how to fix my email client.
All of these are "obvious" if only they had actually looked.

I'm reminded by something someone once said to me when I was working at IBM, "I could go look this up, but it's easier for me to ask you..."
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