Read-copy update implementation for non-cache-coherent systems
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United States of America Patent
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Nov 17, 2015
Grant Date -
Dec 20, 2012
app pub date -
Jun 20, 2011
filing date -
Jun 20, 2011
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Abstract
A technique for implementing read-copy update in a shared-memory computing system having two or more processors operatively coupled to a shared memory and to associated incoherent caches that cache copies of data stored in the memory. According to example embodiments disclosed herein, cacheline information for data that has been rendered obsolete due to a data update being performed by one of the processors is recorded. The recorded cacheline information is communicated to one or more of the other processors. The one or more other processors use the communicated cacheline information to flush the obsolete data from all incoherent caches that may be caching such data.
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