From 11124411aa95827404d6bfdfc14c908e1b54513c Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 20 Feb 2009 16:29:09 +0900 Subject: x86: convert to the new dynamic percpu allocator Impact: use new dynamic allocator, unified access to static/dynamic percpu memory Convert to the new dynamic percpu allocator. * implement populate_extra_pte() for both 32 and 64 * update setup_per_cpu_areas() to use pcpu_setup_static() * define __addr_to_pcpu_ptr() and __pcpu_ptr_to_addr() * define config HAVE_DYNAMIC_PER_CPU_AREA Signed-off-by: Tejun Heo --- arch/x86/mm/init_64.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'arch/x86/mm/init_64.c') diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index e6d36b49025..7f91e2cdc4c 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -223,6 +223,25 @@ set_pte_vaddr(unsigned long vaddr, pte_t pteval) set_pte_vaddr_pud(pud_page, vaddr, pteval); } +void __init populate_extra_pte(unsigned long vaddr) +{ + pgd_t *pgd; + pud_t *pud; + + pgd = pgd_offset_k(vaddr); + if (pgd_none(*pgd)) { + pud = (pud_t *)spp_getpage(); + pgd_populate(&init_mm, pgd, pud); + if (pud != pud_offset(pgd, 0)) { + printk(KERN_ERR "PAGETABLE BUG #00! %p <-> %p\n", + pud, pud_offset(pgd, 0)); + return; + } + } + + set_pte_vaddr_pud((pud_t *)pgd_page_vaddr(*pgd), vaddr, __pte(0)); +} + /* * Create large page table mappings for a range of physical addresses. */ -- cgit v1.2.3