Say Hello To Linux 3.0; Linus Just Tagged 3.0-rc1
For anyone that was doubting Linus Torvalds would finally part ways with the Linux 2.6 kernel series, you lost your bets. On the eve of Memorial Day in the United States and his departure to Japan for LinuxCon, Linus Torvalds just tagged Linux 3.0-rc1 in Git.
It was just one week ago that Linus Torvalds brought up the matter of whether its time to end the Linux 2.6 kernel series with there already being 39 major releases and its development period having lasted longer than major series in the past.
Linus at first was considering the next kernel series to be Linux 2.8, but then that changed to being the Linux 3.0 kernel series. It looked likely that it was the end of the road for Linux 2.6 with the kernel developers being quite positive towards a change.
The discussion had largely been around whether to call the next kernel release Linux 2.8, 3.0, or something else. A number of developers were interested in the versioning being more date/time oriented.
Some developers also expressed that this move to tagging the Linux 3.0 kernel would be a good turning point to remove some old cruft from the kernel, e.g. old subsystems and drivers that are seldom -- if ever -- used today, especially by those that are still updating their software components. There was also at least one suggestion of stalling the Linux 3.0 kernel change until the ARM architecture code was cleaned up. Linus rejected these notions that the kernel versioning change wouldn't be tied to such milestones, but such work could occur organically over time.
The discussion over this kernel versioning change had died down in the past couple of days, but to some surprise, hitting my kernel Git notifications this evening is a "Linux 3.0-rc1" commit. The commit message from Linus Torvalds simply reads:
.. except there are various scripts that really know that there are three numbers, so it calls itself "3.0.0-rc1".
No Linux 3.0-rc1 kernel release announcement has yet to hit the Linux Kernel Mailing List with any other commentary from Linus, but it will probably be due out shortly.
Under this new versioning model, the next major release of the Linux kernel to follow will be Linux 3.1, then Linux 3.2, etc. There will still be the stable point releases to each series as Linux 3.0.1, 3.0.2, etc.
Besides changing the kernel name from what would have been the Linux 2.6.40 kernel to now being the Linux 3.0 kernel, there are a number of changes to be excited for when this release officially occurs later in the summer. Some of the notable items that are new to this kernel release include:
- Cleancache support, with initial implementations for the EXT4 and Btrfs file-systems, among others.
- A Microsoft Kinect Linux driver.
- Various open-source graphics driver improvements. This includes Sandy Bridge performance optimizations, initial support for Intel Ivy Bridge, early work for AMD Fusion Llano APUs, and many other Intel / Radeon / Nouveau changes. But this kernel still has various open-source GPU driver bugs.
The Linux 3.0 kernel will also lack a number of features including the Reiser4 file-system, the VIA KMS/DRM driver, an accelerated Poulsbo / PowerVR DRM driver, multi-GPU rendering, and various other long sought after items. The major Linux kernel power regressions have yet to be resolved as well, but that's still on my TODO list to finish bisecting those two nasty bugs.
UPDATE: Linus has just written the 3.0-rc1 announcement and has sent it to the LKML. Below is the 3.0-rc1 release announcement in full.
Yay! Let the bikeshed painting discussions about version numbering begin (or at least re-start).
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