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Adapting FreeRTOS for multicores: an experience report

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Publication details

JournalSoftware: Practice and Experience
DateE-pub ahead of print - 19 Feb 2013
DatePublished (current) - Sep 2014
Issue number9
Number of pages26
Pages (from-to)1129-1154
Early online date19/02/13
Original languageEnglish


Multicore processors are ubiquitous. Their use in embedded systems is growing rapidly, and given the constraints on uniprocessor clock speeds, their importance in meeting the demands of increasingly processor-intensive embedded applications cannot be understated. To harness this potential, system designers need to have available to them embedded operating systems with built-in multicore support for widely available embedded hardware. This paper documents our experience of adapting FreeRTOS, a popular embedded real-time operating system, to support multiple processors. A working multicore version of FreeRTOS that is able to schedule tasks on multiple processors as well as provide full mutual-exclusion support for use in concurrent applications is presented. Mutual exclusion is achieved in an almost completely platform-agnostic manner, preserving one of FreeRTOS's most attractive features: portability.

    Research areas

  • embedded systems; operating systems; multicore computing; task scheduling; softwarebased mutual exclusion; field-programmable gate arrays

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