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Convert if_afdata read lock path to epoch
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Authored by mmacy on May 13 2018, 5:13 AM.
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F136952066: D15410.id.diff
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Details

Summary
  • Convert write lock to mutex
  • Convert read lock to epoch
  • Do destroy / free of llentrys after grace period has elapsed

For the impact see flame graph 4 -> 5 at:
https://github.com/ScaleBSD/scalebsd.github.io/blob/master/_drafts/2018-05-12-UDP-On-FreeBSD-is-anyone-using-this-at-scale.md

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rS FreeBSD src repository - subversion
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