From linux-ia64  Mon Mar 14 04:49:39 2005
From: Jesse Barnes <jbarnes () sgi ! com>
Date: Mon, 14 Mar 2005 04:49:39 +0000
To: linux-ia64
Subject: Re: [PATCH] fix generic non-SMP builds
Message-Id: <200503132049.39708.jbarnes () sgi ! com>
X-MARC-Message: https://marc.info/?l=linux-ia64&m=111077582813691

On Sunday, March 13, 2005 5:57 pm, dann frazier wrote:
> +u8 cpu_to_node_map[NR_CPUS] __cacheline_aligned;
> +EXPORT_SYMBOL(cpu_to_node_map);
> +
> +cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned;

I'm trying to figure out why these are caheline aligned...  they're ready-only 
for after boot (hotplug aside), right?  Do we see that a lot of cpu/node 
local references to them occur?  OTOH, the wastage isn't that big either 
way...

> +	for(cpu = 0; cpu < NR_CPUS; ++cpu) {
> +		node = -1;
> +		for (i = 0; i < NR_CPUS; ++i)
> +			if (cpu_physical_id(cpu) == node_cpuid[i].phys_id) {
> +				node = node_cpuid[i].nid;

Is there a for_each_node(n) now?

> +	for (cpu = 0; cpu < NR_CPUS; cpu++)
> +		per_cpu(local_per_cpu_offset, cpu) = __per_cpu_offset[cpu];

for_each_cpu here I think.

Not sure when Tony had this queued up, so we may have to rediff in a week or 
two, otherwise it looks good.

Jess
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