Messages in this thread | | | Date | Thu, 22 Sep 2016 20:42:28 +0200 | From | Peter Zijlstra <> | Subject | Re: [tip:sched/core] sched/core: Avoid _cond_resched() for PREEMPT=y |
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On Thu, Sep 22, 2016 at 02:25:01PM -0400, Mikulas Patocka wrote: > I've found a document that says that cond_resched() is needed on > preemptible kernels to mark RCU quiescent states: > > https://lwn.net/Articles/603252/ > > Paul, is cond_resched() still needed on current RCU implementation? Or not?
No, we ripped that out. See 4a81e8328d37 ("rcu: Reduce overhead of cond_resched() checks for RCU")
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