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    SubjectRe: [PATCH] rcu: Is it safe to enter an RCU read-side critical section?
    On Mon, Sep 09, 2013 at 06:53:20AM -0700, Paul E. McKenney wrote:
    > On Mon, Sep 09, 2013 at 03:36:04PM +0200, Peter Zijlstra wrote:
    > > On Mon, Sep 09, 2013 at 06:23:43AM -0700, Paul E. McKenney wrote:
    > > > And guys, I have to say that the advice on which per-CPU primitive to use
    > > > varies wildly and randomly. For all I know, each of you individually
    > > > might well be sticking to the same story, but taken together, your
    > > > collective advice is strongly resembling white noise.
    > >
    > > Its partly because cl and I disagree on things. He doesn't seem to care
    > > much about validation and believes that people will not make mistakes
    > > with this stuff.
    >
    > At some point, my only recourse would be to require an Acked-by from one
    > of you for any per-CPU changes proposed by the other. I really hope that
    > it doesn't come to that, but this situation is getting a bit annoying.

    Nah, I'll not hold that over you. I think the current storm-in-teacup
    was mostly due us seeing something suspicous and not understanding the
    explanation well or so.

    > > And partly because I didn't get what was going on. While Frederic's
    > > explanation might be correct it was incomprehensible for me.
    >
    > And I freely admit that the comments on rcu_is_cpu_idle() are completely
    > inadequate, and I do apologize for that. Seemed clear at the time.
    > But then it always does, doesn't it? ;-)

    Yeah, I'm only all too familiar with this problem :/


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