linux-kernel - Re: non-NUMA cache_free_alien() (was Re: [RFC] SLAB : NUMA cache_free_alien() very expensive because of virt_to

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Message-ID: <20070403003107.GB31026@linux-os.sc.intel.com>
Date:	Mon, 2 Apr 2007 17:31:07 -0700
From:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>
To:	Christoph Lameter <christoph@...eter.com>
Cc:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	Andi Kleen <andi@...stfloor.org>,
	Eric Dumazet <dada1@...mosbay.com>,
	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 Mon, Apr 02, 2007 at 05:23:20PM -0700, Christoph Lameter wrote:
> On Mon, 2 Apr 2007, Siddha, Suresh B wrote:
> 
> > Set the node_possible_map at runtime. On a non NUMA system,
> > num_possible_nodes() will now say '1'
> 
> How does this relate to nr_node_ids?

With this patch, nr_node_ids on non NUMA will also be '1' and
as before nr_node_ids is same as num_possible_nodes()

thanks,
suresh
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