[HN Gopher] Linux 6.12 Features Super Real-Time, Sched_ext, Inte...
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Linux 6.12 Features Super Real-Time, Sched_ext, Intel Xe2 and Pi 5
Author : rbanffy
Score : 54 points
Date : 2024-09-29 19:33 UTC (3 hours ago)
(HTM) web link (www.phoronix.com)
(TXT) w3m dump (www.phoronix.com)
| hamandcheese wrote:
| The Pi 5 support is surprising, or rather that it's only landing
| now.
| master_crab wrote:
| If I went and checked commits, I'm sure there are a lot of
| business critical IOT/controller type processes that now rely
| on Raspberry and therefore engineers backing support out the
| gate
| hamandcheese wrote:
| But it's not out of the gate, it's been almost a year.
| master_crab wrote:
| All relative I guess. "Out the gate" for fairly
| conservative industrial controllers can probably be
| measured in months to years.
|
| You never catch them using anything near latest in an
| application.
| haukem wrote:
| The Raspberry Pi Foundation does not do a good upstream
| support. It is not very bad, but also not good. They should
| start adding support for their new chips in the upstream
| projects before they get into the market, like Intel does it
| for example. They could add support for some new IP cores,
| without reveling when and how it will be used later. When the
| product comes out the only add small patches linking the code
| together like device tree files.
|
| It would also be good if they would release all the closed
| source firmware files needed for their devices under a
| redistributable license in the linux-firmware repository. For
| some time it was not allowed to redistribute the binary wifi
| firmware needed for the Raspberry Pi devices. This is needed
| for Linux distributions to package the binaries.
|
| I hope they do this only because of lack of resources and not
| intentionally to lock people into their Linux distribution.
| mshook wrote:
| As far as I know (source, I still patch the LTS kernels), the
| fan control of the POE hat for the Pi 4 hasn't been merged
| yet.
|
| This thing was announced on May 2021...
|
| So not so good is really an understatement.
|
| https://www.raspberrypi.com/news/announcing-the-raspberry-
| pi...
| xattt wrote:
| Still waiting on SR-IOV for Xe graphics to make it...
|
| Modules are available, but it's hit-and-miss with updates.
| beeflet wrote:
| Isn't intel SRIOV getting mainlined with Xe driver in 6.12 or
| am I mistaken?
| xattt wrote:
| It's a fairly significant feature but it's not mentioned in
| the 6.12 pull notes. Various sites mention that it's
| "definitely, for sure, this time" mainlined in the next
| release, but I haven't seen anything definitive.
|
| I'm just an end user, so I don't know if it's been mentioned
| in a newsgroup somewhere.
| eblanshey wrote:
| So Linux now officially support RTOS capabilities, without
| patches, which is pretty cool. I wonder, realistically, how many
| applications that were originally designed to use
| microcontrollers for real-time purposes, can be migrated to use
| Linux, which vastly simplifies and lowers the cost development.
| And having the ability to use high-level languages like Python
| significantly lowers the barrier to entry. Obviously certain
| applications require the speed of a MCU without an operating
| system, but how many projects really don't need dedicated MCUs?
| elcritch wrote:
| Unfortunately migrating real-time stuff to Linux _doesn't_
| necessarily reduce costs or simplify real-time development
| needs. I've been doing embedded development for 5+ years at a
| few companies and doing embedded Linux is still a slog. I
| prefer a good MCU running Nim or other modern language. Heck
| there's even MicroPython nowadays.
|
| Especially for anything that needs to "just run" for multiple
| years. Linux means you must deal of the distro or something
| like Yocto or Buildroot. Both of which have major pain points.
| ziofill wrote:
| https://www.zdnet.com/article/20-years-later-real-time-linux...
|
| This article explains well why PREEMPT_RT is a big deal and why
| it was so much work to get in into the kernel.
| resource_waste wrote:
| Ubuntu/Debian/Mint family will get it, one day...
|
| Reminded that Debian-family is outdated linux that uses the
| marketing 'stable' which has 0 relations to the number of bugs.
|
| Modern Linux like Fedora has those bugs already fixed.
|
| I say this as a warning. I thought we were trapped with Windows
| 11 and 'Linux'(meaning Debian-family). No, turns out that is
| outdated linux and Modern linux is amazing.
|
| I'm a bit reluctant to lump Fedora in with 'Linux', because its
| not fair to Fedora.
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