What parts of Linux kernel can I read for fun? [closed]

Question

I would recommend looking at LXR. It makes it easier to follow the flow of the code (you do not have to search for each function that is called — well, you have, but the site does it for you).

Some starting points, for the current version (2.6.30):

• start_kernel() — think of it as the kernel equivalent of main(). This function initializes almost all the kernel subsystems; follow it to see in code what you see scrolling on the screen during the boot.
• entry_32.S — system calls and interrupts (x86-32 version, which should be nearer what you know; note the use of the AT&T assembly dialect instead of the Intel dialect you might be more used to).
• head_32.S — the kernel entry point. This is where the kernel starts after switching to protected mode; in the end, it will call start_kernel().
• arch/x86/boot — the real-mode bootstrap code. It starts in assembly (boot/header.S), but quickly jumps into C code (starting at boot/main.c). Does the real-mode initialization (mostly BIOS calls which have to be done before switching to protected mode); it is compiled using a weird GCC trick (.code16gcc), which allows the generation of 32-bit real-mode code.
• arch/x86/boot/compressed — if you ever wondered where does the "Decompressing Linux..." message comes from, it is from here.

Myself, I've always found the task scheduling code a bit of a hoot :-/

Methinks you need to get yourself a hobby outside the industry. Or a life :-)

The comments in the kernel can be pretty funny. There's some tips on where to find the best ones on kerneltrap.

arch/sparc/lib/checksum.S- /* Sun, you just can't beat me, you just can't. Stop trying, arch/sparc/lib/checksum.S: * give up. I'm serious, I am going to kick the living shit arch/sparc/lib/checksum.S- * out of you, game over, lights out.*/

linux-0.01.tar.gz is Historic Kernel and good for start
it is simple and tiny and better for start reading
(also it have void main(void) Instead of start_kernel() lol :D )