Messages in this thread | | | Subject | Re: [PATCH v6 04/46] percpu_rwlock: Implement the core design of Per-CPU Reader-Writer Locks | From | Steven Rostedt <> | Date | Mon, 18 Feb 2013 11:31:27 -0500 |
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On Mon, 2013-02-18 at 21:51 +0530, Srivatsa S. Bhat wrote: > Hi Michel,
> Yes.. I don't think we can avoid that. Moreover, since we _want_ unfair > reader/writer semantics to allow flexible locking rules and guarantee > deadlock-safety, having a recursive reader side is not even an issue, IMHO.
Recursive unfair reader lock may guarantee deadlock-safety, but remember, it adds a higher probability of live-locking the write_lock. Which is another argument to keep this separate to cpu hotplug only.
-- Steve
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