On Tue, 21 Aug 2007, Mathieu Desnoyers wrote: > SLUB Use cmpxchg() everywhere. > > It applies to "SLUB: Single atomic instruction alloc/free using > cmpxchg". > +++ slab/mm/slub.c 2007-08-20 18:42:28.000000000 -0400 > @@ -1682,7 +1682,7 @@ redo: > > object[c->offset] = freelist; > > - if (unlikely(cmpxchg_local(&c->freelist, freelist, object) != freelist)) > + if (unlikely(cmpxchg(&c->freelist, freelist, object) != freelist)) > goto redo; > return; > slow: Ok so regular cmpxchg, no cmpxchg_local. cmpxchg_local does not bring anything more? My measurements did not show any difference. I measured on Athlon64. What processor is being used? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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