Expedited module unloading for kernel modules that execute read-copy update callback processing code
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United States of America Patent
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Feb 16, 2016
Grant Date -
Jun 13, 2013
app pub date -
Apr 24, 2012
filing date -
Dec 10, 2011
priority date (Note) -
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Abstract
A technique for expediting the unloading of an operating system kernel module that executes read-copy update (RCU) callback processing code in a computing system having one or more processors. According to embodiments of the disclosed technique, an RCU callback is enqueued so that it can be processed by the kernel module's callback processing code following completion of a grace period in which each of the one or more processors has passed through a quiescent state. An expediting operation is performed to expedite processing of the RCU callback. The RCU callback is then processed and the kernel module is unloaded.
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