Preemptible RCU
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"This patch implements a new version of RCU which allows its read-side critical sections to be preempted,"Paul McKenney said in a posting to the Linux Kernel mailing list. He described theRCU code contained in his 9 part patchset,"it uses a set of counter pairs to keep track of the read-side critical sections and flips them when all tasks exit read-side critical section." Ingo Molnar responded very favorably to the patch,"cool! Now after 2 years of development and testing I think this is one of the most mature patchsets on lkml - so i'd like to see this designated for potential upstream inclusion. I.e. everyone who can see some bug, please holler now."
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