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x86: update populate_extra_pte() and add populate_extra_pmd()

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Impact: minor change to populate_extra_pte() and addition of pmd flavor

Update populate_extra_pte() to return pointer to the pte_t for the
specified address and add populate_extra_pmd() which only populates
till the pmd and returns pointer to the pmd entry for the address.

For 64bit, pud/pmd/pte fill functions are separated out from
set_pte_vaddr[_pud]() and used for set_pte_vaddr[_pud]() and
populate_extra_{pte|pmd}().

Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Tejun Heo
2009-02-24 11:57:21 +09:00
parent c0c0a29379
commit 458a3e644c
4 changed files with 67 additions and 39 deletions
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7
arch/x86/kernel/setup_percpu.c
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@@ -41,6 +41,11 @@ unsigned long __per_cpu_offset[NR_CPUS] __read_mostly = {
};
EXPORT_SYMBOL(__per_cpu_offset);
static void __init pcpu4k_populate_pte(unsigned long addr)
{
populate_extra_pte(addr);
}
static inline void setup_percpu_segment(int cpu)
{
#ifdef CONFIG_X86_32
@@ -104,7 +109,7 @@ void __init setup_per_cpu_areas(void)
}
}
pcpu_unit_size = pcpu_setup_static(populate_extra_pte, pages, size);
pcpu_unit_size = pcpu_setup_static(pcpu4k_populate_pte, pages, size);
free_bootmem(__pa(pages), pages_size);