Volume 7 Number 3 (Mar. 2012)
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JSW 2012 Vol.7(3): 516-525 ISSN: 1796-217X
doi: 10.4304/jsw.7.3.516-525

Implementation and Evaluation of the Synchronization Protocol Immediate Priority Ceiling in PREEMPT-RT Linux

Andreu Carminati, Rˆomulo Silva de Oliveira, and Lu´ıs Fernando Friedrich
Department of Automation and Systems, Federal University of Santa Catarina, Florian´opolis, Brazil

Abstract—In general purpose operating systems, such as the mainline Linux, priority inversions occur frequently and are not considered harmful. They are not avoided or limited as in real-time systems. In the current version of the kernel PREEMPT-RT Linux, the protocol used for priority inversion control is the Priority Inheritance. The objective of this paper is to propose the implementation of an alternative protocol, the Immediate Priority Ceiling, for use in drivers dedicated to real-time applications. This paper explains how the protocol was implemented in the real-time kernel and compare the protocol implemented with the Priority Inheritance implementation, currently used in the real-time kernel.

Index Terms—real-time systems; Linux; process synchronization

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Cite: Andreu Carminati, Rˆomulo Silva de Oliveira, and Lu´ıs Fernando Friedrich, "Implementation and Evaluation of the Synchronization Protocol Immediate Priority Ceiling in PREEMPT-RT Linux," Journal of Software vol. 7, no. 3, pp. 516-525, 2012.

General Information

ISSN: 1796-217X (Online)
Frequency:  Bimonthly 
Editor-in-Chief: Prof. Antanas Verikas
Executive Editor: Ms. Yoyo Y. Zhou
Abstracting/ Indexing: DBLP, EBSCO, CNKIGoogle Scholar, ProQuest, INSPEC(IET), ULRICH's Periodicals Directory, WorldCat, etc
E-mail: jsw@iap.org
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