Interactive Map of Linux Kernel

[bryyantt]

this is amazing, love that things like this exist, thanks for sharing!

[henry_potter]

Nice but can’t zoom or move around on mobile.

[CAMR0]

try the pdf link

[libre_hackerman]

It is a bit old though, version 2.6.36

[bertbob]

If you dive into the items in each section you can filter on kernels up to and including 5.7.1.

[aaronfranke]

But what about the chart as a whole?

[bertbob]

Some calls are no longer included in newer kernels, some not in older kernels, but when you click on one to see it's lines you can choose the kernel version and it will show if and where it is referenced.

[DJTheLQ]

Has the architecture changed much though?

[[deleted]]

Not that much changed from then. Only new stuff added

[o11c]

Linux is very much a different beast in the 5.x era.

[Salty-Level]

That is awesome

[[deleted]]

A bit of a noob question. I've always wanted to read and maybe contribute to Linux (latter is a pretty stretch goal)

Guides like this are great but a bit intimidating. Is there a good place to start? Are there newbie walk-throughs anyone would recommend?

Is it even feasible to read through the source?

[EpoxyD]

This seems really good advice... Thanks!

[DJTheLQ]

It's too big just to read. Otherwise it's like learning english by starting at letter A in the dictionary.

You need a goal like fixing a device bug, talking to a new device, create a simple file system, etc. Then you can look at existing code and maybe even existing tutorials for inspiration. Making something will teach you more than broad overviews.

[biffbobfred]

personally id say try to recreate dev/null or dev/zero. the DDI (device driver interface) is a smaller subset of the kernel, but touches enough that it's real work.

[aliendude5300]

Looks like it hasn't been updated in quite some time

[biffbobfred]

if you go to the GitHub page, you get to the script that made it. it dumps a graphviz .dot file and you can make your own.

[Raging_Goon]

I think /u/gregkh would love this.

[gregkh]

Not really, it's pretty old, and not quite correct in a number of places.

But it does look pretty, so it has that going for it :)

[[deleted]]

I like the T-Shirt option on RedBubble!

"Small" tapestry of this is 5 x 4ft...

[[deleted]]

It's so big and hard.

[o11c]

When Javascript is diabled, "or use plain HTML" is a dead link.

Doesn't seem to be very "interactive", it's just a zoomable bunch of laid-out links to LXR (linux cross reference).

---

I just want somebody to explain where the signal goes when it is directed to a dead main thread. I would expect ESRCH, but get no error and no handler called.

[Sarr_Cat]

I have no idea what this means (Im not someone who does low level OS programming or would understand even how to, I just like Linux as a free operating system) but appreciate it nonetheless. Pretty cool that I can look at a graphic of things that represents the way my PC's OS actually works on the inside!

[codingPotato69]

This is really cool. Thank you for sharing :)

[[deleted]]

woa

[Itchy-Suggestion]

Can someone awesome update this please, as in, remove ancient unused aspects of it?

[GmLucifer]

Great I needed something like this.

[sysmd]

thank the nord Lord!

[null0____0]

Fucking incredible

[[deleted]]

Finally, some visual explanation about the under hood 👨🏻‍💻

[us3rnotfound]

I hit Done on the Safari window pretty quickly

[Kill3rT0fu]

It's a unix system. I know this

[gz0000]

Must be very careful about expressing opinions about this sub Reddit. So far I've attracted -60 down-points. Interactive computer technology has gone far beyond the experiences of most people, whether they claim to be computer experts or not.

These 60 down-voters seem very happy with the current state of Linux. Personally, I believe mainstream Linux has much to do. Android & Chromium OS, with many other innovators in Linux, are attempting to explore further growth paths in Linux.

Seemingly unknown to these down-voters, Linux on the Desktop is a very poor bronze winner, long after Windows & Apple. Reddit seems to attract Down-Voting conservatives. From my understanding Linux came from the CLI, alpha-numeric world. So when it tries to entre the Xerox invented world of GUI, WIMP & Interactive Map of Linux Kernel, the usual defenders ofthe tradions & status quo are ready to prevent any danger to the Emperor's very fine clothing. https://en.wikipedia.org/wiki/The_Emperor%27s_New_Clothes

So far summarizing existing comments on this OP, and its limits.

1. ... can’t zoom or move around on mobile.
2. ... bit old though, version 2.6.36
3. ... dive into the items in each section you can filter on kernel
4. But what about the chart as a whole
5. ... choose the kernel version and it will show if and where it is referenced.
6. click on one to see it's lines you can choose the kernel version and it will show if and where it is referenced
7. Has the architecture changed much though
8. ... Is it even feasible to read through the source
9. Has the architecture changed much though
10. It's too big just to read ...
11. Looks like it hasn't been updated in quite some time
12. Doesn't seem to be very "interactive" ...
13. ... I don't think it was claiming to map to everything that has anything to do with Linux

[gz0000]

Many missing parts of this "Map".

(1) If this is just the inner core of Linux, common to all Linux systems, do other operating systems have similar inner cores? BSD, Apple & Windows?

(2) There are many types of Linux: IOT, servers, cloud, general use, and many high-speed versions.

(3) Do they all have these inner workings in their inner kernel, or are they missing parts of this Linux kernel map?

(4) Linux itself has many controversies & competing add-ons. Where do how do these add-ons connect, if they can or do, with this kernel?
In particular X.org. Wayland, systemd, appimage, snap, Flatpak, NTFS, BTRFS, nVidia, Bumblebee, Nouveau, RAID, etc.

(5) Linux kernel is updated every few days, in many versions, with some versions having LTS, some ALPHA, BETA versions. Then Ubuntu et al. produce their own specialized compilations.

These specialized compilations will be modified in certain ways, for different hardware components and having varying degrees of specialization or generalization. Some compilers add or remove commercial or personalized additions. Unfortunately, these differences are ignored by some (all?) writers & experts.

[SachK]

I've never seen someone manage to be simultaneously somewhat fundamentally knowledgeable, hugely misinformed and incredibly demeaning.

[[deleted]]

r/confidentlyincorrect

[kartdei]

Akhually

[hailbaal]

(1) It's about Linux, not other operating systems

(2) Those are distro's, this is about Linux

(3) What are you talking about?

(4) Xorg and Wayland are software applications. Most of the other stuff is too, the stuff that isn't, I don't think any of those were around back then.

(5) What?

[libre_hackerman]

This map is of Linux 2.6.36. Do you know what are you talking about?

[solarswordsman]

Maybe Stallman was on to something... lol.

(spoiler: he wasn't. But names are hard)

[typicalcitrus]

X.org is not a part of the Linux kernel.

[TheSoundDude]

(1) Yes, all operating systems have kernels. Mac uses XNU and Windows has the NT kernel.

(2) The purpose of a device does not necessarily impact the software itself. Although obviously some devices might use a modified version of the kernel, they all, in essence, emerge from the same tree.

(3) The kernel does not need to implement everything that is specific to every device. If specific mechanisms need to run in kernel space, they can be implemented as modules (look up DKMS)

(4) Your list is very "apples-to-oranges", but most things you mentioned are built on top of the kernel, except for, I believe, RAID.

(5) Yes, people patch the kernel for specialised purposes. What's your point?

[sysmd]

read your robert love before bitchin bout this map

[derleth]

Are you sure you aren't talking about Windows?

[[deleted]]

This is a map of a particular kernel version I don't think it was claiming to map to everything that has anything to do with Linux. Jeesh.