Messages in this thread | | | Subject | Re: [patch 0/9] Fix various __task_cred related invalid RCU assumptions | From | Peter Zijlstra <> | Date | Sun, 13 Dec 2009 19:56:17 +0100 |
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On Wed, 2009-12-09 at 21:34 -0800, Paul E. McKenney wrote:
> Ah -- I have a related lockdep question. Is there a primitive that says > whether or not the current task holds at least one lock of any type? > If so, I would like to make rcu_dereference() do at least a little crude > checking for this problem.
Hmm, no, but that's not hard to do, however I actually implemented something like that for RCU a long while ago and that gives a metric TON of false positives due to things like the radix tree which are RCU-safe but are not required to be used with RCU.
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