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Optimizing preemptible read-copy update for low-power usage by avoiding unnecessary wakeups

  • US 8,055,918 B2
  • Filed: 04/03/2008
  • Issued: 11/08/2011
  • Est. Priority Date: 04/03/2008
  • Status: Active Grant
First Claim
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1. A method for low-power detection of a grace period for deferring the destruction of a shared data element until pre-existing references to the data element are removed, comprising:

  • implementing a grace period processing action that requires a response from a processor that may be running a preemptible reader of said shared data element before further grace period processing can proceed;

    determining a power and reader status of said processor; and

    proceeding with grace period processing without said response if said power and reader status indicates that said response is unnecessary.

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