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Intel energizes decades-old Linux kernel sub-project

Submitted by Roy Schestowitz on Friday 25th of February 2022 12:25:51 AM Filed under
Linux
Hardware

Intel announced a move on Wednesday that will inject fresh energy into a Linux kernel project that started close to two decades ago – and was lacking funding and contributors.

The microprocessor giant has made an under-the-radar acquisition of Linutronix, a German developer house that provides services for Linux-powered industrial systems. Intel didn't disclose the amount it paid for Linutronix, which is also an expert in real-time Linux applications. The acquisition comes as real-time industrial applications are set to make increasing use of low-latency communication between controllers, sensors, robots and tooling, and other equipment.

Most interestingly, Linutronix is described by Intel as the architect of the PREEMPT_RT patch set, which when applied and enabled makes the Linux kernel as preemptible as possible. This in turn lowers internal latencies, which is very useful for those scheduling time-sensitive software threads to complete within a given deadline (using the deadline scheduler). This in turn is useful for ensuring, for example, incoming data is processed reliably within a tight time-frame.

So far, PREEMPT_RT has lacked sufficient contributors and funding for mainline kernel integration and maintenance. Though folks have been building products that use the preemption patch, they did not contribute enough funding or feedback, and as a result development slowed. Linutronix has previously noted only a handful of people maintaining PREEMPT_RT.

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