Linaro Releases

The Linaro Networking Group (LNG) is pleased to announce the 2014.09 release of the Linaro Networking Kernel.

Interesting changes include:

• Based on Linux 3.14.12 kernel
  • PREEMPT_RT patchset rt9
• Arndale support

THUMB2 instruction set support has been re-enabled, recovering significant performance which was lost when that support was removed to improve CPU isolation / hotplug stability.

The release is also available via tags in the LNG git repository:

git://git.linaro.org/kernel/linux-linaro-lng.git linux-lng-3.14.12-2014.09
git://git.linaro.org/kernel/linux-linaro-lng.git linux-lng-preempt-rt-3.14.12-2014.09

More information on Linaro Networking Group Kernels is available at
http://wiki.linaro.org/LNG/Engineering/Foundational

Fixed in this release

• LBTS: #134 LTP-realtime rt-migrate test hangs when run on linux-lng-v3.14.x.

Known issues

NO_HZ_FULL support remains non-functional with RT and is NOT INCLUDED in the linux-lng-preempt-rt-v3.14.x branch.
This marks a departure from prior releases in that the RT branch no longer contains every patch found in the non-RT branch.
We intend to remedy this as soon as clean support for NO_HZ_FULL operation can be integrated into the RT branch.

• LBTS: #340 ARMV8 support not yet working in 3.14 kernel

• LBTS: #89 no_hz_full : isolation breaks on x86

Feedback and Support

Subscribe to the important Linaro mailing lists and join our IRC channels to stay on top of Linaro development.

• Linaro Networking Development mailing list
• Linaro Networking IRC channel on irc.freenode.net at #linaro-networking

• Bug reports should be filed in the Linaro Bug Tracking System against “LNG Kernel” product and “General” component: https://bugs.linaro.org
• Questions? ask Linaro.
• Interested in commercial support? inquire at Linaro support