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Linux and Graphics: Kernel Headers, Linux 5.5, NUVIA and Wayland

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Graphics/Benchmarks
Linux
  • What's a kernel headers package anyway

    I've written before about what goes into Fedora's kernel-devel package. Briefly, it consists of files that come out of the kernel's build process that are needed to build kernel modules.

    In contrast to kernel-devel, the headers package is for userspace programs. This package provides #defines and structure definitions for use by userspace programs to be compatible with the kernel. The system libc comes with a set of headers for platform independent libc purposes (think printf and the like) whereas the kernel headers are more focused on providing for the kernel API. There's often some overlap for things like system calls which are tied to both the libc and the kernel. Sometimes the decision to support them in one place vs the other comes down to developer choices.

    While the in-kernel API is not guaranteed to be stable, the userspace API must not be broken. There was an effort a few years ago to have a strict split between headers that are part of the userspace API and those that are for in-kernel use only.

    Unlike how kernel-devel gets packaged, there are proper make targets to generate the kernel-headers (thankfully). make headers_install will take care of all the magic. These headers get installed under /usr/include

  • Linux 5.5 To Finally Kill The Async Block Cipher API In Favor Of SKCIPHER

    The crypto code within the Linux kernel for the upcoming 5.5 cycle finishes converting the drivers to making full use of the four-year-old SKCIPHER interface so that the old ABLKCIPHER code can be removed.

    SKCIPHER was introduced in 2015 to the mainline kernel to ultimately replace BLKCIPHER/ABLKCIPHER. This "symmetric key cipher" interface is a generic encrypt/decrypt wrapper for ciphers.

  • NUVIA To Make Serious Play For New CPUs In The Datacenter, Hires Linux/OSS Veteran

    Making waves this afternoon is word of the NUVIA server CPU start-up landing its series A funding round and thus making more information known on this new silicon start-up.

  • WXRC Is The Wayland XR Compositor For VR Headsets

    Drew DeVault of Sway/WL-ROOTS notoriety and longtime Wayland developer Simon Ser have started development on WXRC, a new Wayland compositor.

    WXRC is the Wayland XR Compositor and is based on OpenXR and the open-source Monado implementation. This is better than the past Linux VR desktop efforts we've recently seen that relied on SteamVR. As of this week, WXRC has working 3D Wayland clients.

More in Tux Machines

Linux Foundation: ACT Program, Dent and Delta Lake

  • Google, VMware Headline Linux Foundation's ACT Program
  • Amazon is joining a project that could upend network chipmakers such as Broadcom

    Amazon is contributing to a new piece of open-source software that could give it a leg up in its physical stores. The Linux Foundation, a nonprofit organization that maintains the Linux operating system and open-source software, announced the new networking operating system, called Dent, in a statement on Friday. Dent is a proposed operating system for switches, which are pieces of hardware used to route data around networks, usually within companies or between companies and the internet. The market has traditionally been dominated by big companies such as Broadcom, which provides a lot of the underlying silicon chips, and Cisco, which sells finished assembled product.

  • Calmer waters promised in the data lake through Linux Foundation Delta Lake Project

    Delta Lake (wait for it… the clue is in the name) is a project focusing on improving the reliability and performance of data lakes. Delta Lake was actually announced by unified analytics company Databricks earlier this year before this autumn becoming a Linux Foundation project with an open governance model. The team points out that organisations in every vertical aspire to get more value from data through data science, machine learning and analytics, but they are hindered by the lack of data reliability within data lakes.

Latest Openwashing in the News

Programming/Admin: Rootconf, Awk, UNIX, Wireguard and Python

  • Rootconf Hyderbad, 2019

    Rootconf is the conference on sysadmins, DevOps, SRE, Network engineers. Rootconf started its journey in 2012 in Bangalore, 2019 was the 7th edition of Rootconf. In these years, through all the Rootconfs, there is a community that has developed around Rootconf. Now people do come to attend Rootconf not just to attend the conference but also to attend friends and peers to discuss projects and ideas.

  • A bit of fun with awk

    I learned a few tidbits in awk this week. awk is a language I have, at best, looked at only very superficially, even though I use it frequently if very basically: to chop a line into fields. I tend to use it more than cut(1) because I can print additional data to that which I’ve cut out (without having to add sed(1) so awk just is more versatile for me.

  • How Unix Works: Become a Better Software Engineer

    I’ll put just enough commands for us to play along, assuming you’re starting from scratch. We’ll explore concepts, see them in practice in a shell, and then scream “I GET THIS!”. Along the way, we’ll also figure out what a shell really is.

    But we can’t begin without getting into the minds of the creators: exploring Unix’s philosophy.

    For now, we can assume Linux is Unix. If you want to know why that’s not really the case, you can skip to the bottom and come back. We’ll end the Unix vs linux confusion once and for all.

  • wireguard

    wireguard (wg) is a modern vpn protocol, using the latest class of encryption algorithms while at the same time promising speed and a small code base.

    modern crypto and lean code are also tenants of openbsd, thus it was a no brainer to migrate my router from openvpn over to wireguard.

  • Python Software Foundation: Mozilla and Chan Zuckerberg Initiative are funding pip with $407,000

    The Mozilla Corporation and the Chan Zuckerberg Initiative are funding the Python package installer pip with $407,000 USD to support work that is planned for 2020. Where is pip headed next year? The roadmap has been laid out, so let’s have a look at what the future holds. As the Python Software Foundation (PSF) announced in a blog post, it is receiving $207,000 USD from Mozilla via the Mozilla Open Source Support Award and $200,000 USD from the Chan Zuckerberg Initiative (CZI) as Essential Open Source Software for Science grant. The funds are designated to support a three-phased working plan for pip in 2020 to make the package installer “easier for people to use and troubleshoot”, and here’s what’s going to happen.

  • A Tiny Python Exception Oddity

    If you go back to the first case I discussed, with the unmatched parenthesis, in Friendly-traceback, I rely on the location of the error shown by Python to indicate where the problem arose and, when appropriate, I look *back* to also show where the potential problem started. Unfortunately, I cannot do that in this case with CPython.

today's howtos