| Date | Mon, 20 Aug 2007 13:46:54 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: [patch 01/23] Fall back on interrupt disable in cmpxchg8b on 80386 and 80486 |
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On Mon, 20 Aug 2007, Mathieu Desnoyers wrote:
> Yes, I use it as synchronization mechanism for my buffer management algorithm > in LTTng. Since I write in per-cpu buffers and want to be as reentrant > as possible wrt other contexts (dealing with NMI as worse case, but also > applies to MCE..), I use local_cmpxchg to reserve space in my buffers. > It is faster than the standard cmpxchg.
Ok I have seen these numbers in the OLS papers but I could not reproduce them in SLUB.
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