torvalds/linux on Hacker News

…this but then I discovered the kernel developers themselves already made one for their own tools. https://github.com/torvalds/linux/blob/master/tools/include/... People can include this awesome header file in a freestanding C project and…

comment by matheusmoreira · 2021-10-24 · in OK Lenovo, we need to talk

…before returning. This technique is used in C programs (see Linux Kernel code example here: https://github.com/torvalds/linux/blob/master/fs/ext4/block_... )

comment by rmk · 2021-10-22 · in Ask HN: Why goto Still Exists in C#?

…guests. I know that this was looked at a few year ago and no one had made it work then. 0: https://github.com/torvalds/linux/blob/2f111a6fd5b5297b4e92f...

comment by InvaderFizz · 2021-10-22 · in Show HN: vGPU and SR-IOV on consumer GPUs

…[2] https://github.com/illumos/illumos-gate/blob/master/usr/src/... [3] https://github.com/torvalds/linux/blob/master/arch/s390/incl... [4] https://github.com/torvalds/linux/blob/master/Documentation/... [5] https://github.com/tor

comment by skissane · 2021-10-18 · in The Undocumented Microsoft “Rich” Header (2018)

…doing any system specific syscalls and learning about calling conventions you won't get very far. https://github.com/torvalds/linux/blob/master/arch/x86/entry... (subject to change, see your specific kernel source) I think more fun is…

comment by raxxorrax · 2021-10-07 · in x86 assembly doesn’t have to be scary (2018)

…this point. It doesn't take that much more assembly code to bootstrap C in the Linux kernel on x86: https://github.com/torvalds/linux/blob/master/arch/x86/boot/... There are a bunch of other headers in that file, but the "start_of_setup:"…

comment by teraflop · 2021-10-06 · in Writing a “bare metal” operating system for Raspberry Pi 4

…had a hard limit at 128KiB for args + env on x86. After the change it was variable up to 2MiB. https://github.com/torvalds/linux/commit/b6a2fea39318e43fee8...

comment by jeffbee · 2021-10-06 · in Moving Google toward the mainline

…://man7.org/linux/man-pages/man2/syscalls.2.html https://man7.org/linux/man-pages/man2/syscall.2.html https://github.com/torvalds/linux/blob/master/Documentation/... Only on Linux is GNU truly just some optional userland. You can throw it…

comment by matheusmoreira · 2021-09-30 · in What the GNU?

…g.rchapman.org/posts/Linux_System_Call_Table_for_x... [2] http://asm.sourceforge.net/syscall.html [3] https://github.com/torvalds/linux/blob/master/ipc/syscall.c

comment by blincoln · 2021-09-18 · in Modifying the Linux Kernel – New Syscalls

▲ 1

Kbuild: Only default to -Werror if COMPILE_TEST · torvalds/Linux b339ec9 ·

story by sam345 · 2021-09-11 · 0 comments

…[0][1], making Wine ... closer to a WSL1 equivalent?) [0] https://lkml.org/lkml/2020/8/10/1323 [1] https://github.com/torvalds/linux/blob/master/include/linux/...

comment by spijdar · 2021-09-10 · in Windows Subsystem for Linux GUI

“Linux releases as GPLv2 or later for example” Linux doesn’t use “or later”. https://github.com/torvalds/linux/blob/master/COPYING : The Linux Kernel is provided under: SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note Being under…

comment by Someone · 2021-09-09 · in 60x speed-up of Linux “perf”

…listed here and the underlying systems supporting them. How long could that take, a whole weekend? https://github.com/torvalds/linux/blob/master/arch/x86/entry...

comment by raxxorrax · 2021-09-07 · in The operating system: should there be one? (2013) [pdf]

…the topic is your code not your person No he definitely attacks people's person. "You're a moron." https://github.com/torvalds/linux/pull/17#issuecomment-56599...

comment by chrisseaton · 2021-09-06 · in Linus Torvalds: “GitHub creates useless garbage merges”

…because the Go runtime itself was supposed to properly interoperate with a C library but didn't. https://github.com/torvalds/linux/blob/master/Documentation/... > These functions are called just like ordinary C function according to your…

comment by matheusmoreira · 2021-09-05 · in A nasty bit of undefined timezone behavior in Golang

…computing, and to- EventSourcing style- extend the graph of computing as we might see fit. [1] https://github.com/torvalds/linux/tree/master/drivers/leds/t... [2] https://news.ycombinator.com/item?id=28348148

comment by rektide · 2021-08-31 · in Computers should expose their internal workings as a 6th sense

…then also wasn't standard-compliant [2], [3]. [1]: https://github.com/Dunedan/mbp-2016-linux [2]: https://github.com/torvalds/linux/commit/124298bd03acebd9c9d... [3]: https://lists.infradead.org/pipermail/linux-nvme/2017-Februa...

comment by Dunedan · 2021-08-23 · in Gnome Shell on the Apple M1, bare metal

…or processes are just tasks to the kernel. Kernel threads, which are not user space are different. https://github.com/torvalds/linux/blob/master/include/linux/... The sched wouldn't be able to use a Red-Black trees in the way it does if it…

comment by nyrikki · 2021-08-20 · in System CPU Usage and Glibc

…For instance, check the linux kernel's explanation of circular buffers and how to use them [1]. [1] https://github.com/torvalds/linux/blob/master/Documentation/... > What does it mean to "relax an edge"? Why do we need to do it V-1 times?…

comment by kilburn · 2021-08-07 · in Reflections on 10k Hours of Programming

…as explaining how the code is doing something. For example take the app limited detection function: https://github.com/torvalds/linux/blob/master/net/ipv4/tcp_r...

comment by juancb · 2021-08-06 · in Reflections on 10k Hours of Programming

…random number generation... Too slow to be useful, and the BCM283x SoC already has an internal RNG: https://github.com/torvalds/linux/blob/master/drivers/char/h... > ... or hardware-accelerated hashing The TPM is on a really slow bus (33…

comment by duskwuff · 2021-08-04 · in Uptime Lab's CM4 Blade Adds NVMe, TPM 2.0 to Raspberry Pi

…is making their porting efforts difficult. This commit in upstream ends up getting split in half: https://github.com/torvalds/linux/commit/8ce29c679a6ecefb88d... With only 3 lines of it getting pulled into i40e-2.13.10:…

comment by nik_0_0 · 2021-07-30 · in Hunting a bug in the i40e Intel driver

…fewer mistakes -vs- confusion where pointers and integers degrade to a common type. A random line: https://github.com/torvalds/linux/blob/122fa8c588316aacafe7e... > void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags) These are…

comment by viraptor · 2021-07-24 · in Rust for Linux redux

…I interpret it as a way to compete against(proprietary) CUDA dominance, but maybe that is wrong? https://github.com/torvalds/linux/tree/master/drivers/gpu/dr...

comment by flakiness · 2021-07-21 · in Reverse-Engineering the Mali G78

Didn't see a link to the fix. Here it is: https://github.com/torvalds/linux/commit/b29c457a65114359601...

comment by ilkkao · 2021-07-15 · in CVE-2021-22555: Turning \x00\x00 into 10000$

Torvalds did weigh in on it. It's disabled by default because it apparently breaks some legacy stuff. https://github.com/torvalds/linux/commit/561ec64ae67ef25cac8...

comment by tyingq · 2021-07-06 · in Posix hardlink heartache

…Thanks for the verbatim quote, "namespace lookup" found the source of the message immediately: https://github.com/torvalds/linux/blob/5bfc75d92efd494db37f5... . So this uses acpi_os_printf() (defined at…

comment by exikyut · 2021-06-28 · in Ask HN: Best “I brought down production” story?

▲ 3

Linux Kernel Parameters Documentation

story by xanthine · 2021-06-27 · 0 comments

…series to send to the proper reviewers and mailing lists”. Also, Linux is already mirrored to GH https://GitHub.com/torvalds/Linux

comment by judge2020 · 2021-06-23 · in Pulling GitHub into the Linux kernel process

Sadness trigger warning, brace yourself: https://github.com/torvalds/linux

comment by OJFord · 2021-06-23 · in Pulling GitHub into the Linux kernel process

…this. The Linux kernel itself has a nolibc.h file that they use for their own freestanding tools: https://github.com/torvalds/linux/blob/master/tools/include/... It's even better than what I came up with. Permissively licensed. Supports…

comment by matheusmoreira · 2021-06-21 · in Ask HN: How to learn proper systems programming?

…(note the double --force). Potentially of interest: `__noreturn machine_real_restart` in reboot.c ( https://github.com/torvalds/linux/blob/5bfc75d92efd494db37f5... ) Bonus points for additionally finding a way to trigger the "secure erase"…

comment by d110af5ccf · 2021-06-15 · in Irish police to be given powers over passwords

There's code in the Linux FTDI driver that correctly handles the bricked FTDI clones: https://github.com/torvalds/linux/blob/master/drivers/usb/se...

comment by jah · 2021-06-15 · in FTDI FT232RL: Real vs. Fake (2014)

…Public License version 2 only [1] https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html [2] https://github.com/torvalds/linux/blob/master/COPYING

comment by throwaway2037 · 2021-06-04 · in An Unbelievable Demo

▲ 1

Code Fast

story by kaapipo · 2021-05-18 · 0 comments

…Linux kernel has tons of refcounting, so much so that it has a utility file for reference counters: https://github.com/torvalds/linux/blob/master/include/linux/... )

comment by masklinn · 2021-05-16 · in Things you can’t do in Rust (and what to do instead)

…are usually submitted as standalone commits. You can find tests for several kernel subsystems here: https://github.com/torvalds/linux/tree/master/tools/testing

comment by caskstrength · 2021-05-09 · in Dropping cache didn’t drop cache

…source tree. It even links to an interactive tutorial regarding how to set up git-send-email[2] [1] https://github.com/torvalds/linux/blob/master/Documentation/... [2] https://git-send-email.io/

comment by u801e · 2021-05-03 · in The Linux kernel has surpassed one million git commits

visible on the github repo https://github.com/torvalds/linux

comment by dorianmariefr · 2021-05-02 · in The Linux kernel has surpassed one million git commits

…to do if we need to re-review patches is remove them for now)" warrants an apology in itself. [1] - https://github.com/torvalds/linux/commit/799bac5512188522213... [2] - https://lore.kernel.org/linux-nfs/YIAta3cRl8mk%2FRkH@unreal/ [3] -…

comment by rincebrain · 2021-04-25 · in Open letter from researchers involved in the “hypocrite commit” debacle

…more amusing assembly syntaxes, I present Blackfin, which looks almost HLL-like at first glance: https://github.com/torvalds/linux/blob/b8c9c8f0190f4004d3d43... . In terms of expressiveness it’s about the same as any other CPU-level…

comment by saagarjha · 2021-04-24 · in Can you tell an assembly language when you see one?

…commits--just the association of his advisor being one of the authors of the "hypocrite" paper. [0] https://github.com/torvalds/linux/commits?author=pakki001@um... [1] Including his most recent that was successfully applied:…

comment by re · 2021-04-21 · in “They introduce kernel bugs on purpose”

…and Greg finding several vulnerable commits that reached stable branches and releases. For example: https://github.com/torvalds/linux/commit/8e949363f017 While I'm sure a room of people might find it useful to psychoanalyze their 'unclear'…

comment by DetroitThrow · 2021-04-21 · in “They introduce kernel bugs on purpose”

But your signed-off-by was a correct email address with your real identity, as per: https://github.com/torvalds/linux/blob/master/Documentation/... Right? It's true that all systems can be gamed and you could no doubt fool the right…

comment by ajross · 2021-04-21 · in “They introduce kernel bugs on purpose”

This is one of the commits that went live with "built-in bug" according to Leon: https://github.com/torvalds/linux/commit/8e949363f017

comment by bmcahren · 2021-04-21 · in “They introduce kernel bugs on purpose”

Here's the commit specifically identified by Leon Romanovsky as having a "built-in bug" https://github.com/torvalds/linux/commit/8e949363f017

comment by bmcahren · 2021-04-21 · in “They introduce kernel bugs on purpose”

…2013, and 2008. None of these people appear to be associated with Liu in any significant way. [1]: https://github.com/torvalds/linux/search?q=%22umn.edu%22 [2]: https://github.com/torvalds/linux/search?q=%22umn.edu%22&typ... [3]:…

comment by ENOTTY · 2021-04-21 · in “They introduce kernel bugs on purpose”

…was trying to bypass by identifying their commits as now being part of a personal hobby. [0] https://github.com/torvalds/linux/commit/6b389c16378a03fe71f...

comment by lolinder · 2021-04-20 · in IBM employee forced to stop kernel work under personal email address

…being okay but not great [3]. You can compare ClockPro [4] and DClock [5] in the simulator. [1] https://github.com/torvalds/linux/blob/ac3a0c8472969a03c0496... [2] https://github.com/torvalds/linux/blob/1590a2e1c681b0991bd42... [3]…

comment by NovaX · 2021-04-19 · in Linux Kernel: The multi-generational LRU

see: https://www.kernel.org/doc/html/latest/dev-tools/kunit/index... https://github.com/torvalds/linux/blob/master/tools/testing/...

comment by jand · 2021-04-12 · in Ask HN: Does Linux kernel covered by unit tests?