Hacker News with Generative AI: Linux Kernel

Linux 6.13 Quadrupling Workqueue Concurrency Limit (phoronix.com)
The Linux kernel Workqueue (WQ) is used for handling asynchronous process execution. For the past many years there has been an upper limit on the number of workqueue execution contexts per CPU at 512, but with Linux 6.13 that is being quadrupled to a limit of 2048.

Linux Kernel, Operating Systems, Performance, Concurrency

3 points by mikece 2 days ago | 0 comments

Intel Spots 3888.9% Performance Improvement in Linux Kernel from 1 Line of Code (phoronix.com)
Intel's Linux kernel test robot has reported a 3888.9% performance improvement in the mainline Linux kernel as of this past week.

Linux Kernel, Performance Optimization, Intel, Software

8 points by awiesenhofer 13 days ago | 0 comments

Linus Torvalds lands a 2.6% performance improvement with minor Linux kernel patc (phoronix.com)
Linus Torvalds merged a patch on Wednesday that he authored that with reworking a few lines of code is able to score a 2.6% improvement within Intel's well-exercise "will it scale" per-thread-ops benchmark test case.

Linux Kernel, Performance, Optimization, Open Source

8 points by pauloxnet 13 days ago | 4 comments

Linux 6.13 to Drop Fieldbus Just Five Years After Being Merged (phoronix.com)
Merged back in 2019 was the Fieldbus subsystem as a set of network protocols for real-time distributed control of automated industrial systems. But now five years later, Fieldbus is being removed from the mainline Linux kernel since the code hasn't been maintained.

Linux Kernel, Open Source, Technology, Software Development, Networking

3 points by LinuxBender 16 days ago | 0 comments

Linus Torvalds Lands 2.6% Performance Improvement with Minor Linux Kernel Patch (phoronix.com)
Linus Torvalds merged a patch on Wednesday that he authored that with reworking a few lines of code is able to score a 2.6% improvement within Intel's well-exercise "will it scale" per-thread-ops benchmark test case.

Linux Kernel, Performance, Open Source, Software, Benchmarking

8 points by thunderbong 20 days ago | 1 comments

Linus Torvalds Lands 2.6% Performance Improvement with Minor Linux Kernel Patch (phoronix.com)
Linus Torvalds merged a patch on Wednesday that he authored that with reworking a few lines of code is able to score a 2.6% improvement within Intel's well-exercise "will it scale" per-thread-ops benchmark test case.

Linux Kernel, Performance, Open Source, Benchmarking

12 points by LinuxBender 21 days ago | 1 comments

Cqwrteur's fork of Linux kernel, rename it to Cinux (github.com/Cqinux)
Linus Torvalds has been sold out to big tech companies like Google and Microsoft. He himself is a billionaire and no longer writes any code. Many people, including myself, are very unhappy with his decisions, like the removal of several Russian developers from kernel maintainership status. See Several Russian developers lose kernel maintainership status.

Linux Kernel, Open Source, Politics, Software Development

11 points by jaypatelani 26 days ago | 13 comments

Serge Semin's Goodbye to the Linux Kernel (kernel.org)
I am sure you have already heard the news caused by the recent Greg' commit 6e90b675cf942e ("MAINTAINERS: Remove some entries due to various compliance requirements.").

Linux Kernel, Software, Open Source, Security, Compliance

34 points by airhangerf15 28 days ago | 12 comments

The Linux Kernel's "Compliance Requirements" Around Russian Sanctions (phoronix.com)
When a number of Russian Linux developers were removed from their MAINTAINERS file in the Linux kernel, it was described as due to "compliance requirements" but vague in what those requirements entailed.

Linux Kernel, Politics, Security, Russia, Open Source

19 points by 2OEH8eoCRo0 28 days ago | 2 comments

Kernel contributor James Bottomley's response to the recent maintainers removal (kernel.org)
Please accept all of our apologies for the way this was handled.

Linux Kernel, Open Source, Community, Controversy

11 points by simonmysun 28 days ago | 3 comments

Several Linux Kernel Driver Maintainers Removed Due to Russian Association (phoronix.com)
Quietly merged into this week's Linux 6.12-rc4 kernel was a patch that removes a number of kernel maintainers from being noted in the official MAINTAINERS file that recognizes all of the driver and subsystem maintainers.

Linux Kernel, Open Source, Security, Politics, Russia

6 points by ryzvonusef 28 days ago | 1 comments

[PATCH] MAINTAINERS: Remove some entries due to various compliance requirements. (kernel.org)
Remove some entries due to various compliance requirements. They can come back in the future if sufficient documentation is provided.

Linux Kernel, Open Source, Compliance

12 points by phoe-krk 29 days ago | 2 comments

Several Russian developers lose kernel maintainership status (lwn.net)
Perhaps one of the more surprising changes in the 6.12-rc4 development kernel was the removal of several entries from the kernel's MAINTAINERS file.

Linux Kernel, Open Source, Russia, Software Development

196 points by koutsie 29 days ago | 258 comments

Several Linux Kernel Driver Maintainers Removed Due to Association to Russia (phoronix.com)
Quietly merged into this week's Linux 6.12-rc4 kernel was a patch that removes a number of kernel maintainers from being noted in the official MAINTAINERS file that recognizes all of the driver and subsystem maintainers.

Linux Kernel, Open Source, Russia, Politics, Security

21 points by voxadam 30 days ago | 19 comments

The long road to lazy preemption in the Linux CPU scheduler (lwn.net)
The kernel's CPU scheduler currently offers several preemption modes that implement a range of tradeoffs between system throughput and response time.

Linux Kernel, Operating Systems, Performance, Scheduling

220 points by chmaynard 33 days ago | 50 comments

Smart pointers for the kernel (lwn.net)
Rust has a plethora of smart-pointer types, including reference-counted pointers, which have special support in the compiler to make them easier to use. The Rust-for-Linux project would like to reap those same benefits for its smart pointers, which need to be written by hand to conform to the Linux kernel memory model. Xiangfei Ding presented at Kangrejos about the work to enable custom smart pointers to function the same as built-in smart pointers.

Rust, Linux Kernel, Programming Languages, Memory Management

169 points by signa11 34 days ago | 114 comments

Io_uring and seccomp (2022) (0x74696d.com)
Recent Linux kernels have the kqueue-alike io_uring interface for asynchronous I/O. Instead of making read and write syscalls, you write batches of I/O requests to a circular buffer in userland called the submission queue, and make a io_uring_enter syscall to submit them to the kernel. Instead of making individual syscalls, io_uring submission queue entries (SQEs) take an opcode for the specific I/O operation they're performing, and that's mapped to the same kernel code that normally services the syscall.

Linux Kernel, Asynchronous I/O, System Programming, Operating Systems

82 points by pncnmnp 43 days ago | 24 comments

Linus Torvalds Asks Kernel Developers to Write Better Git Merge Commit Messages (phoronix.com)
Yesterday when announcing the Linux 6.12-rc2 kernel, Linus Torvalds asked that the kernel maintainers do a better job moving forward with their commit messages.

Linux Kernel, Git, Open Source, Software Development

10 points by isaacfrond 44 days ago | 0 comments

Bcachefs Fixes Pull Once Again Frustrates Linus Torvalds (phoronix.com)
Linus Torvalds merged the newest round of fixes to the experimental Bcachefs file-system, but it's left Linux creator Linus Torvalds frustrated and he's presented two choices for the file-system moving forward due to the continued LKML drama.

Linux Kernel, Operating Systems, File Systems, Linus Torvalds

28 points by mfiguiere 46 days ago | 10 comments

Upstream containers with compiler toolchains from kernel.org (gtucker.io)
Many moons ago, some discussions were being held around having common container images with toolchains maintained by the upstream Linux kernel community.

Linux Kernel, Containers, Software, Toolchains

26 points by transpute 52 days ago | 0 comments

Nvidia Mellanox Linux Driver Spearheads Multi-Path PCI "Sign of Things to Come" (phoronix.com)
Merged to the Linux 6.12 kernel Git source tree today were the RDMA subsystem updates. Besides Broadcom and HiSilicon continuing to work on upstream new hardware support, a notable change from the Git merge is the NVIDIA Mellanox "mlx5" driver adding multi-path PCI support.

Linux Kernel, Networking, Hardware, Nvidia, PCI

25 points by LinuxBender 57 days ago | 4 comments

Bcachefs Hopes to Remove "Experimental" Flag in the Next Year (phoronix.com)
Bcachefs lead developer Kent Overstreet has submitted all of the Bcachefs file-system feature patches for the Linux 6.12 kernel merge window.

Linux Kernel, File Systems, Open Source

5 points by turrini 60 days ago | 0 comments

Sched_ext Merged for Linux 6.12 – Scheduling Policies as BPF Programs (phoronix.com)
Linux 6.12 is shaping up to be a heck of a kernel update! Following real-time "PREEMPT_RT" going mainline after twenty years and many other kernel features merged this week, Linus Torvalds just pulled in the much anticipated sched_ext code!

Linux Kernel, BPF, Scheduling Policies, Operating Systems

12 points by marcodiego 61 days ago | 1 comments

Linux 6.12 Lands QR Code for DRM Panic Messages, Intel LNL, BMG Graphics Enabled (phoronix.com)
The Direct Rendering Manager (DRM) kernel graphics/display driver updates have been submitted and already merged for the in-development Linux 6.12 kernel.

Linux Kernel, DRM, Graphics Drivers, Intel

3 points by rbanffy 62 days ago | 0 comments

Patch Proposed for Adding x86_64 Feature Levels to the Kernel (phoronix.com)
A patch was sent out on Sunday for adding new Linux kernel configuration options for tuning the kernel build to different x86_64 micro-architecture feature levels.

Linux Kernel, x86-64, Operating Systems, Hardware

4 points by westurner 64 days ago | 2 comments

Race conditions in Linux Kernel perf events (binarygecko.com)
The problem is that the lock that is taken is on event rather than rb.

Linux Kernel, Performance, Race Conditions, Software, Operating Systems

80 points by signa11 65 days ago | 12 comments

Preempt_rt enablement patches have been queued into tip/tip.git (kernel.org)
TIP group

Linux Kernel, Software Development, Open Source

6 points by marcodiego 72 days ago | 3 comments

Linux Close to Enabling Real-Time "Preempt_rt" Support (phoronix.com)
We're very close to the finish line for the mainline Linux kernel being able to enable real-time "PREEMPT_RT" kernel support.

Linux Kernel, Operating Systems

5 points by mariuz 75 days ago | 0 comments

Linux Close to Enabling Real-Time "Preempt_rt" Support (phoronix.com)
We're very close to the finish line for the mainline Linux kernel being able to enable real-time "PREEMPT_RT" kernel support.

Linux Kernel, Performance

14 points by jamesy0ung 76 days ago | 2 comments

Retiring from the Rust for Linux Project (kernel.org)

Rust, Linux Kernel, Open Source

12 points by ok123456 81 days ago | 0 comments