28 lines
709 B
C
28 lines
709 B
C
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/*
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* SMP stuff which is common to all sub-architectures.
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*/
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#include <linux/module.h>
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#include <asm/smp.h>
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#ifdef CONFIG_X86_32
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DEFINE_PER_CPU(unsigned long, this_cpu_off);
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EXPORT_PER_CPU_SYMBOL(this_cpu_off);
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/* Initialize the CPU's GDT. This is either the boot CPU doing itself
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(still using the master per-cpu area), or a CPU doing it for a
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secondary which will soon come up. */
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__cpuinit void init_gdt(int cpu)
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{
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struct desc_struct *gdt = get_cpu_gdt_table(cpu);
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pack_descriptor(&gdt[GDT_ENTRY_PERCPU],
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__per_cpu_offset[cpu], 0xFFFFF,
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0x2 | DESCTYPE_S, 0x8);
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gdt[GDT_ENTRY_PERCPU].s = 1;
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per_cpu(this_cpu_off, cpu) = __per_cpu_offset[cpu];
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per_cpu(cpu_number, cpu) = cpu;
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}
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#endif
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