| Date | Thu, 5 Apr 2018 19:28:08 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH 10/10] locking/qspinlock: Elide back-to-back RELEASE operations with smp_wmb() |
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On Thu, Apr 05, 2018 at 05:59:07PM +0100, Will Deacon wrote: > @@ -340,12 +341,17 @@ void queued_spin_lock_slowpath(struct qspinlock *lock, u32 val) > goto release; > > /* > + * Ensure that the initialisation of @node is complete before we > + * publish the updated tail and potentially link @node into the > + * waitqueue. > + */ > + smp_wmb();
Maybe an explicit note to where the matching barrier lives..
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