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x86: merge smp_prepare_boot_cpu

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it is practically the same between arches now, so it is
moved to smpboot.c. Minor differences (gdt initialization)
live inside an ifdef

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Glauber de Oliveira Costa 2008-03-19 14:26:01 -03:00 committed by Ingo Molnar
parent bbc2ff6a91
commit a8db8453ff
3 changed files with 18 additions and 28 deletions
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18
arch/x86/kernel/smpboot.c
View file

@ -24,6 +24,9 @@
#include <mach_wakecpu.h>
#include <smpboot_hooks.h>
/* State of each CPU */
DEFINE_PER_CPU(int, cpu_state) = { 0 };
/* Store all idle threads, this can be reused instead of creating
* a new thread. Also avoids complicated thread destroy functionality
* for idle threads.
@ -999,6 +1002,21 @@ int __cpuinit native_cpu_up(unsigned int cpu)
return 0;
}
/*
* Early setup to make printk work.
*/
void __init native_smp_prepare_boot_cpu(void)
{
int me = smp_processor_id();
#ifdef CONFIG_X86_32
init_gdt(me);
switch_to_new_gdt();
#endif
/* already set me in cpu_online_map in boot_cpu_init() */
cpu_set(me, cpu_callout_map);
per_cpu(cpu_state, me) = CPU_ONLINE;
}
#ifdef CONFIG_HOTPLUG_CPU
void remove_siblinginfo(int cpu)
{

14
arch/x86/kernel/smpboot_32.c
View file

@ -77,9 +77,6 @@ u8 apicid_2_node[MAX_APICID];
extern void map_cpu_to_logical_apicid(void);
extern void unmap_cpu_to_logical_apicid(int cpu);
/* State of each CPU. */
DEFINE_PER_CPU(int, cpu_state) = { 0 };
#ifdef CONFIG_HOTPLUG_CPU
void cpu_exit_clear(void)
{
@ -219,17 +216,6 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
smp_boot_cpus(max_cpus);
}
void __init native_smp_prepare_boot_cpu(void)
{
unsigned int cpu = smp_processor_id();
init_gdt(cpu);
switch_to_new_gdt();
cpu_set(cpu, cpu_callout_map);
__get_cpu_var(cpu_state) = CPU_ONLINE;
}
extern void impress_friends(void);
extern void smp_checks(void);

14
arch/x86/kernel/smpboot_64.c
View file

@ -68,9 +68,6 @@
/* Set when the idlers are all forked */
int smp_threads_ready;
/* State of each CPU */
DEFINE_PER_CPU(int, cpu_state) = { 0 };
cycles_t cacheflush_time;
unsigned long cache_decay_ticks;
@ -216,17 +213,6 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
print_cpu_info(&cpu_data(0));
}
/*
* Early setup to make printk work.
*/
void __init native_smp_prepare_boot_cpu(void)
{
int me = smp_processor_id();
/* already set me in cpu_online_map in boot_cpu_init() */
cpu_set(me, cpu_callout_map);
per_cpu(cpu_state, me) = CPU_ONLINE;
}
extern void impress_friends(void);
extern void smp_checks(void);