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| RCU is a synchronization mechanism that is used in the Linux kernel to replace some uses of reader-writer locking and reference counting. RCU is only recently being added to university coursework, but fortunately there is quite a bit of documentation available: | RCU is a synchronization mechanism that is used in the Linux kernel to replace some uses of reader-writer locking and reference counting. The concepts behind RCU are quite simple: At its core, RCU is just a way of waiting for things to get done. However, effective use of RCU does require that you think about concurrency in a different way. RCU is only recently being added to university coursework, but fortunately there is quite a bit of documentation available: |
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| * A number of [https://lwn.net LWN] articles, including: * [http://lwn.net/Articles/262464/ What is RCU, Fundamentally?] * [http://lwn.net/Articles/263130/ What is RCU's Usage?] * [http://lwn.net/Articles/418853/ The RCU API, 2010 Edition.] * [http://lwn.net/Articles/202847/ Sleepable RCU.] * [http://doi.ieeecomputersociety.org/10.1109/TPDS.2011.159 User-Level Implementations of Read-Copy Update] (freely available [http://www.rdrop.com/users/paulmck/RCU/urcu-main-accepted.2011.08.30a.pdf pre-publication version]). See also the freely available [http://www.computer.org/cms/Computer.org/dl/trans/td/2012/02/extras/ttd2012020375s.pdf supplementary information]. * [http://en.wikipedia.org/wiki/Read-copy-update The wikipedia article]. |
* A number of [[https://lwn.net|LWN]] articles, including: * [[http://lwn.net/Articles/262464/|What is RCU, Fundamentally?]] * [[http://lwn.net/Articles/263130/|What is RCU's Usage?]] * [[http://lwn.net/Articles/418853/|The RCU API, 2010 Edition.]] * [[http://lwn.net/Articles/202847/|Sleepable RCU.]] * [[http://doi.ieeecomputersociety.org/10.1109/TPDS.2011.159|User-Level Implementations of Read-Copy Update]] (freely available [[http://www.rdrop.com/users/paulmck/RCU/urcu-main-accepted.2011.08.30a.pdf|pre-publication version]]). See also the freely available [[http://www.computer.org/cms/Computer.org/dl/trans/td/2012/02/extras/ttd2012020375s.pdf|supplementary information]]. * [[http://en.wikipedia.org/wiki/Read-copy-update|The wikipedia article]]. |
Read-Copy Update (RCU)
RCU is a synchronization mechanism that is used in the Linux kernel to replace some uses of reader-writer locking and reference counting. The concepts behind RCU are quite simple: At its core, RCU is just a way of waiting for things to get done. However, effective use of RCU does require that you think about concurrency in a different way. RCU is only recently being added to university coursework, but fortunately there is quite a bit of documentation available:
- Documentation/RCU in the Linux-kernel source tree.
A number of LWN articles, including:
User-Level Implementations of Read-Copy Update (freely available pre-publication version). See also the freely available supplementary information.
For additional documentation on RCU, see Documentation/RCU/RTFP.txt in your friendly Linux-kernel source tree.