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Date: Thu, 22 Mar 2007 18:25:16 -0700 (PDT) From: Christoph Lameter <christoph@...eter.com> To: "Siddha, Suresh B" <suresh.b.siddha@...el.com> cc: Eric Dumazet <dada1@...mosbay.com>, Andi Kleen <andi@...stfloor.org>, Andrew Morton <akpm@...ux-foundation.org>, linux kernel <linux-kernel@...r.kernel.org> Subject: Re: non-NUMA cache_free_alien() (was Re: [RFC] SLAB : NUMA cache_free_alien() very expensive because of virt_to_slab(objp); nodeid = slabp->nodeid;) On Thu, 22 Mar 2007, Siddha, Suresh B wrote: > > You should check num_possible_nodes(), or nr_node_ids (this one is cheaper, > > its a variable instead of a function call) > > But that is based on compile time option, isn't it? Perhaps I need > to use some other mechanism to find out the platform is not NUMA capable.. No its runtime. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org 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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