Messages in this thread | | | Date | Mon, 18 Feb 2013 22:16:05 +0530 | From | "Srivatsa S. Bhat" <> | Subject | Re: [PATCH v6 04/46] percpu_rwlock: Implement the core design of Per-CPU Reader-Writer Locks |
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On 02/18/2013 10:01 PM, Steven Rostedt wrote: > 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. >
True.
Regards, Srivatsa S. Bhat
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