Adapting RCU for real-time operating system usage
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United States of America Patent
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Jun 8, 2010
Grant Date -
Nov 15, 2007
app pub date -
Jul 17, 2007
filing date -
Sep 29, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system and method is provided to support immediate freeing of a designated element from memory. Following a process of designating an element for removal from a data-structure, conditional limitations are used to determine if immediate freeing of the element from memory is available. The conditional limitations include determining that the instruction originates from a uniprocessor computer system. In addition, the conditional limitations include a determination as to whether a call_rcu primitive or synchronize_kernel primitive may be omitted, or whether the computer implemented instruction is operating in an interrupt handler. If the conditional limitations are met, the designated element may be immediately freed from memory.
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