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57 readable replies · Supporting reply 1 · Supporting reply 2 · Supporting reply 3 · Supporting reply 4torvalds
linux
C2010–2026
torvalds / linux
linux
Linux kernel source tree
742Distinct people
940Mentions
5Explicit recommenders
255.5KGitHub stars
What to know before exploring
What it is
Linux kernel source tree
GitHub
Where it is used
- Ubuntu — Ubuntu uses the Linux kernel at the core of the operating system to manage and control hardware resources like I/O, memory, and CPU. Source
- Android — Android uses the upstream Linux LTS kernel as the base of its Android kernel. Google then adds Android-specific patches to produce Android Common Kernels. Source
- 1 more documented example
What people are saying
For critical applications, I for one would like to know the story behind a commit, preferably in the commit itself and not a reference to an external system like idk, Jira. My…
Cthulhu_ used a recommendation phrase. 5 indexed comments match. This is a phrase match, not a verdict.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
- matheusmoreira/liblinux · linked in 8 of the same discussions
- git/git · linked in 4 of the same discussions
- freebsd/freebsd-src · linked in 3 of the same discussions
Mentioned in the same Hacker News threads. That is not proof they are substitutes.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 6:01:08 PM UTC.
Mentions over time
HN mentions by year940 dated mentions
Observed mentions: 2010-07-15 18:39:05 UTC to 2026-10-29 13:46:22 UTC.
* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2010 | 2010-01-01 00:00:00 UTC | 2011-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2011 | 2011-01-01 00:00:00 UTC | 2012-01-01 00:00:00 UTC | 13 | 3 | 10 |
| 2012 | 2012-01-01 00:00:00 UTC | 2013-01-01 00:00:00 UTC | 24 | 2 | 22 |
| 2013 | 2013-01-01 00:00:00 UTC | 2014-01-01 00:00:00 UTC | 23 | 5 | 18 |
| 2014 | 2014-01-01 00:00:00 UTC | 2015-01-01 00:00:00 UTC | 31 | 7 | 24 |
| 2015 | 2015-01-01 00:00:00 UTC | 2016-01-01 00:00:00 UTC | 42 | 4 | 38 |
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 55 | 9 | 46 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 72 | 8 | 64 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 57 | 8 | 49 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 66 | 6 | 60 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 80 | 6 | 74 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 91 | 8 | 83 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 104 | 8 | 96 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 76 | 3 | 73 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 76 | 6 | 70 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 72 | 7 | 65 |
| 2026 (partial) | 2026-01-01 00:00:00 UTC | 2027-01-01 00:00:00 UTC | 57 | 8 | 49 |
What Hacker News says
55 sourcesROrodionos·Dec 27, 2016Submission
Contributing to Linux Kernel: Dictator and Lieutenants Wotkflow
1 points · Open discussionThe problem, as I understand it, is that these are summaries of summaries. The actual commit messages are incredibly detailed, then they get rolled up by the lieutenants into a single merge with one line per change, then Linus merges them in and adds to the final summary 'networking updates'. If you want to know what actually changed, then look at the commit logs, e.g.:
https://github.com/torvalds/linux/compare/v4.9-rc8...v4.9
In Linux 4.9 is outIt was a fix in PCI error handling on powerpc for a reasonably rare situation where the PCI card doesn't successfully come back up after we reset the slot or the PCI controller...
https://github.com/torvalds/linux/commit/949e9b827eb4736d96d...
In Linux 4.9 is outthere are many other gpu vendors, e.g. in arm cores. I guess this is the code tree in question: https://github.com/torvalds/linux/tree/master/drivers/gpu/dr...
In Linux kernel maintainer says no to AMDGPU patchThanks for catching that. You are right. Here is the source code: https://github.com/torvalds/linux/blob/master/fs/proc/uptime...
My source (first result in Google) was this link https://www.centos.org/docs/5/html/5.1/Deployment_Guide/s2-p... which looks like an older version of the documentation that does not have that last sentence.
In Htop explainedDelete duplicate word “long long” in Introduction
3 points · Open discussionDelete duplicate words PR on Linux kernel
2 points · Open discussion-#define BUILD_BUG_ON_ZERO(e) (sizeof(char[1 - 2 * !!(e)]) - 1)
+#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
+#define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); }))
The commit that introduced the notation, actually used something similar to your second approach:
https://github.com/torvalds/linux/commit/8c87df457cb58fe75b9...
In What is “:-!!” in C code?Looks exactly like the macro Jan Beulich replaced with the one discussed in OP: https://github.com/torvalds/linux/commit/8c87df457cb58fe75b9...
In What is “:-!!” in C code?Ah, good point. One more reason for me to hate VLAs. ;)
The negative-length array trick is used in the Linux kernel source code [1]. I expect it's compiled with -Wvla though.
[1] https://github.com/torvalds/linux/blob/v4.5/arch/x86/boot/bo...
In What is “:-!!” in C code?Any constant expression. In the kernel it's mostly non-zero flags, sizes of things, etc. See https://github.com/torvalds/linux/search?utf8=%E2%9C%93&q=BU...
There's also a fun compile time check for arrays: https://github.com/torvalds/linux/blob/1001354ca34179f3db924...
In What is “:-!!” in C code?without having some editor assist you doing the counting for you.
We.
Have.
Those.
I wouldn't use any editor which can't do this and would have no reason to.
I wouldn't use it for Lisp. I also wouldn't use it for editing C, Makefiles, shell scripts, or anything else.
Speaking of makefiles, here is a quote:
vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
$(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-))))
^^^^ !
That is from: https://github.com/torvalds/linux/blob/master/Makefile
Maybe you should try arguing your inane point on the Linux kernel mailing list!
In Smalltalk vs. Scheme, JavaScript, and JavaLooks like it might be (partially) supported:
https://github.com/torvalds/linux/search?utf8=%E2%9C%93&q=MT...
In VoCore2 Lite – A $4, coin-sized, open-source Linux computer"The only way to clean space is to run this hack, preferably in cron every day"
https://github.com/spotify/docker-gc
"Many attempts can be found on the internet, none of which works well. There is no API to list images with dates"
http://portainer.io/ seems to be able to do it, docker images lists it... I mean, I don't want to call bullshit without knowing the full story, but...
"So, the docker guys wrote a new filesystem, called overlay"
https://github.com/torvalds/linux/commit/e9be9d5e76e34872f0c... written in 2014 by the linux kernal team / Linus, but OK cool story
"It affects ALL systems on the planet configured with the docker repository"
OK, this is why people use AWS' container repo, or they use the open source software and maintain their own repo... this happens with any of the public repo services, and it was 7 hours.
"The regist
Read the rest
ry just grows forever"
S3 is a supported backend, highly would advise anyone running their own repo to use it (or have a similar expanding-space story). There's also a config flag for the repo to allow removing images. Obviously wouldn't want to use this if you're hosting a public repo but internally, go for it, it's off by default, seems sane enough.
"Erlang applications and containers don’t go along"
I'm certain that people are running erlang containers successfully.
"Docker is a dangerous liability that could put millions at risk. It is banned from all core systems."
Daily FUD allowance exhausted.
I guess the tone of this article really bugged me because there's obviously a point to be made from this experience that running Docker is more difficult & error prone than it should be. And maybe it wasn't a great fit for this company culture. But this article crossed the "we didn't have a good experience, therefore, it's BS software" line, and frankly, that attitude may very well have been to blame for the lack of success just as much as docker's shortcomings were...
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