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x86: remove pda_init() 

Impact: cleanup

Copy the code to cpu_init() to satisfy the requirement that the cpu
be reinitialized.  Remove all other calls, since the segments are
already initialized in head_64.S.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Brian Gerst 2009-01-19 12:21:27 +09:00 committed by Tejun Heo
parent b4a8f7a262
commit 8ce031972b
4 changed files with 3 additions and 16 deletions
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1
arch/x86/include/asm/pda.h
View File

@ -24,7 +24,6 @@ struct x8664_pda {
} ____cacheline_aligned_in_smp;
DECLARE_PER_CPU(struct x8664_pda, __pda);
extern void pda_init(int);
#define cpu_pda(cpu) (&per_cpu(__pda, cpu))

15
arch/x86/kernel/cpu/common.c
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@ -895,15 +895,6 @@ EXPORT_PER_CPU_SYMBOL(kernel_stack);
DEFINE_PER_CPU(unsigned int, irq_count) = -1;
void __cpuinit pda_init(int cpu)
{
/* Setup up data that may be needed in __get_free_pages early */
loadsegment(fs, 0);
loadsegment(gs, 0);
load_pda_offset(cpu);
}
static DEFINE_PER_CPU_PAGE_ALIGNED(char, exception_stacks
[(N_EXCEPTION_STACKS - 1) * EXCEPTION_STKSZ + DEBUG_STKSZ])
__aligned(PAGE_SIZE);
@ -967,9 +958,9 @@ void __cpuinit cpu_init(void)
struct task_struct *me;
int i;
/* CPU 0 is initialised in head64.c */
if (cpu != 0)
pda_init(cpu);
loadsegment(fs, 0);
loadsegment(gs, 0);
load_pda_offset(cpu);
#ifdef CONFIG_NUMA
if (cpu != 0 && percpu_read(node_number) == 0 &&

2
arch/x86/kernel/head64.c
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@ -91,8 +91,6 @@ void __init x86_64_start_kernel(char * real_mode_data)
if (console_loglevel == 10)
early_printk("Kernel alive\n");
pda_init(0);
x86_64_start_reservations(real_mode_data);
}

1
arch/x86/xen/enlighten.c
View File

@ -1645,7 +1645,6 @@ asmlinkage void __init xen_start_kernel(void)
#ifdef CONFIG_X86_64
/* Disable until direct per-cpu data access. */
have_vcpu_info_placement = 0;
pda_init(0);
#endif
xen_smp_init();