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x86: clean up non-smp usage of cpu maps

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Cleanup references to the early cpu maps for the non-SMP configuration
and remove some functions called for SMP configurations only.

Cc: Andi Kleen <ak@suse.de>
Cc: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Mike Travis
2008-03-25 15:06:51 -07:00
committed by Ingo Molnar
parent a24eae88ad
commit b447a468fc
4 changed files with 30 additions and 22 deletions
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28
arch/x86/kernel/setup.c
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@@ -10,7 +10,7 @@
#include <asm/setup.h>
#include <asm/topology.h>
#ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA
#if defined(CONFIG_HAVE_SETUP_PER_CPU_AREA) && defined(CONFIG_SMP)
/*
* Copy data used in early init routines from the initial arrays to the
* per cpu data areas. These arrays then become expendable and the
@@ -21,21 +21,12 @@ static void __init setup_per_cpu_maps(void)
int cpu;
for_each_possible_cpu(cpu) {
#ifdef CONFIG_SMP
if (per_cpu_offset(cpu)) {
#endif
per_cpu(x86_cpu_to_apicid, cpu) =
x86_cpu_to_apicid_init[cpu];
per_cpu(x86_bios_cpu_apicid, cpu) =
per_cpu(x86_cpu_to_apicid, cpu) = x86_cpu_to_apicid_init[cpu];
per_cpu(x86_bios_cpu_apicid, cpu) =
x86_bios_cpu_apicid_init[cpu];
#ifdef CONFIG_NUMA
per_cpu(x86_cpu_to_node_map, cpu) =
per_cpu(x86_cpu_to_node_map, cpu) =
x86_cpu_to_node_map_init[cpu];
#endif
#ifdef CONFIG_SMP
} else
printk(KERN_NOTICE "per_cpu_offset zero for cpu %d\n",
cpu);
#endif
}
@@ -72,17 +63,20 @@ void __init setup_per_cpu_areas(void)
/* Copy section for each CPU (we discard the original) */
size = PERCPU_ENOUGH_ROOM;
printk(KERN_INFO "PERCPU: Allocating %lu bytes of per cpu data\n",
size);
for_each_cpu_mask(i, cpu_possible_map) {
for_each_possible_cpu(i) {
char *ptr;
#ifndef CONFIG_NEED_MULTIPLE_NODES
ptr = alloc_bootmem_pages(size);
#else
int node = early_cpu_to_node(i);
if (!node_online(node) || !NODE_DATA(node))
if (!node_online(node) || !NODE_DATA(node)) {
ptr = alloc_bootmem_pages(size);
printk(KERN_INFO
"cpu %d has no node or node-local memory\n", i);
}
else
ptr = alloc_bootmem_pages_node(NODE_DATA(node), size);
#endif
@@ -96,7 +90,7 @@ void __init setup_per_cpu_areas(void)
memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
}
/* setup percpu data maps early */
/* Setup percpu data maps */
setup_per_cpu_maps();
}