On Thu, Jun 16, 2016 at 02:43:29PM +0200, Andreas Schwab wrote:
Peter Zijlstra <peterz@xxxxxxxxxxxxx> writes:
+/*
+ * Am I reading these CAS loops right in that %2 is the old value and the first
+ * iteration uses an uninitialized value?
+ *
+ * Would it not make sense to add: tmp = atomic_read(v); to avoid this?
+ */
No, there is nothing to fix here.
OK, care to elucidate? Clearly I need help reading this.
I'm more than happy to remove the comment, but I would like to better
understand.
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