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x86: change bios_cpu_apicid to percpu data variable fixup

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Change static bios_cpu_apicid array to a per_cpu data variable.
This includes using a static array used during initialization
similar to the way x86_cpu_to_apicid[] is handled.

There is one early use of bios_cpu_apicid in apic_is_clustered_box().
The other reference in cpu_present_to_apicid() is called after
smp_set_apicids() has setup the percpu version of bios_cpu_apicid.

Signed-off-by: Mike Travis <travis@sgi.com>
Reviewed-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
travis@sgi.com 2008-01-30 13:33:21 +01:00 committed by Ingo Molnar
parent 0164fe1624
commit 602a54a8ca
5 changed files with 14 additions and 10 deletions
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6
arch/x86/kernel/apic_64.c
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@ -1205,9 +1205,9 @@ __cpuinit int apic_is_clustered_box(void)
/* Problem: Partially populated chassis may not have CPUs in some of
* the APIC clusters they have been allocated. Only present CPUs have
* x86_bios_cpu_apicid entries, thus causing zeroes in the bitmap. Since
* clusters are allocated sequentially, count zeros only if they are
* bounded by ones.
* x86_bios_cpu_apicid entries, thus causing zeroes in the bitmap.
* Since clusters are allocated sequentially, count zeros only if
* they are bounded by ones.
*/
clusters = 0;
zeros = 0;

13
arch/x86/kernel/setup64.c
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@ -85,10 +85,10 @@ __setup("noexec32=", nonx32_setup);
/*
* Copy data used in early init routines from the initial arrays to the
* per cpu data areas. These arrays then become expendable and the *_ptrs
* are zeroed indicating that the static arrays are gone.
* per cpu data areas. These arrays then become expendable and the
* *_early_ptr's are zeroed indicating that the static arrays are gone.
*/
void __init setup_percpu_maps(void)
static void __init setup_per_cpu_maps(void)
{
int cpu;
@ -98,6 +98,8 @@ void __init setup_percpu_maps(void)
#endif
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) =
x86_cpu_to_node_map_init[cpu];
@ -110,8 +112,9 @@ void __init setup_percpu_maps(void)
#endif
}
/* indicate the early static arrays are gone */
/* indicate the early static arrays will soon be gone */
x86_cpu_to_apicid_early_ptr = NULL;
x86_bios_cpu_apicid_early_ptr = NULL;
#ifdef CONFIG_NUMA
x86_cpu_to_node_map_early_ptr = NULL;
#endif
@ -152,7 +155,7 @@ void __init setup_per_cpu_areas(void)
}
/* setup percpu data maps early */
setup_percpu_maps();
setup_per_cpu_maps();
}
void pda_init(int cpu)

1
arch/x86/kernel/setup_64.c
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@ -334,6 +334,7 @@ void __init setup_arch(char **cmdline_p)
#ifdef CONFIG_SMP
/* setup to use the early static init tables during kernel startup */
x86_cpu_to_apicid_early_ptr = (void *)&x86_cpu_to_apicid_init;
x86_bios_cpu_apicid_early_ptr = (void *)&x86_bios_cpu_apicid_init;
#ifdef CONFIG_NUMA
x86_cpu_to_node_map_early_ptr = (void *)&x86_cpu_to_node_map_init;
#endif

2
arch/x86/kernel/smpboot_32.c
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@ -465,7 +465,7 @@ cpumask_t node_to_cpumask_map[MAX_NUMNODES] __read_mostly =
{ [0 ... MAX_NUMNODES-1] = CPU_MASK_NONE };
EXPORT_SYMBOL(node_to_cpumask_map);
/* which node each logical CPU is on */
u8 cpu_to_node_map[NR_CPUS] __read_mostly = { [0 ... NR_CPUS-1] = 0 };
int cpu_to_node_map[NR_CPUS] __read_mostly = { [0 ... NR_CPUS-1] = 0 };
EXPORT_SYMBOL(cpu_to_node_map);
/* set up a mapping between cpu and node. */

2
arch/x86/mm/srat_64.c
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@ -397,7 +397,7 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end)
static int fake_node_to_pxm_map[MAX_NUMNODES] __initdata = {
[0 ... MAX_NUMNODES-1] = PXM_INVAL
};
static u16 fake_apicid_to_node[MAX_LOCAL_APIC] __initdata = {
static s16 fake_apicid_to_node[MAX_LOCAL_APIC] __initdata = {
[0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
};
static int __init find_node_by_addr(unsigned long addr)