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A Common System Device Hot-Plug Framework For Linux

Linux Kernel

Published on 17 January 2013 03:02 AM EST
Written by Michael Larabel in Linux Kernel
8 Comments

An experimental system device hot-plug framework for the Linux kernel is still being developed. This framework is meant to be commomon for system device hot-plugging for system devices like CPU and RAM while being platform-neutral.

From the RFC patch-set for the system device hot-plug framework by Toshi Kani, "This patchset is a prototype of proposed system device hot-plug framework for design review. Unlike other hot-plug environments, such as USB and PCI, there is no common framework for system device hot-plug. Therefore, this patchset is designed to provide a common framework for hot-plugging and online/offline operations of system devices, such as CPU, Memory and Node. While this patchset only supports ACPI-based hot-plug operations, the framework itself is designed to be platform-neural and can support other FW architectures as necessary."

For those interested in this Linux kernel hot-plug framework still being developed and currently up to its second revision, see the mailing list patch series that is currently comprised of 12 patches.

From a separate initiative, back in October of last year was an ACPI-Based System Device Hot-Plugging Framework proposal for the Linux kernel. Last month there was also work towards true CPU hot-plugging support.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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