diff options
Diffstat (limited to 'arch/sparc64/mm/tlb.c')
-rw-r--r-- | arch/sparc64/mm/tlb.c | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/arch/sparc64/mm/tlb.c b/arch/sparc64/mm/tlb.c deleted file mode 100644 index d8f21e24a82f..000000000000 --- a/arch/sparc64/mm/tlb.c +++ /dev/null @@ -1,97 +0,0 @@ -/* arch/sparc64/mm/tlb.c - * - * Copyright (C) 2004 David S. Miller <davem@redhat.com> - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/percpu.h> -#include <linux/mm.h> -#include <linux/swap.h> -#include <linux/preempt.h> - -#include <asm/pgtable.h> -#include <asm/pgalloc.h> -#include <asm/tlbflush.h> -#include <asm/cacheflush.h> -#include <asm/mmu_context.h> -#include <asm/tlb.h> - -/* Heavily inspired by the ppc64 code. */ - -DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); - -void flush_tlb_pending(void) -{ - struct mmu_gather *mp = &get_cpu_var(mmu_gathers); - - if (mp->tlb_nr) { - flush_tsb_user(mp); - - if (CTX_VALID(mp->mm->context)) { -#ifdef CONFIG_SMP - smp_flush_tlb_pending(mp->mm, mp->tlb_nr, - &mp->vaddrs[0]); -#else - __flush_tlb_pending(CTX_HWBITS(mp->mm->context), - mp->tlb_nr, &mp->vaddrs[0]); -#endif - } - mp->tlb_nr = 0; - } - - put_cpu_var(mmu_gathers); -} - -void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr, pte_t *ptep, pte_t orig) -{ - struct mmu_gather *mp = &__get_cpu_var(mmu_gathers); - unsigned long nr; - - vaddr &= PAGE_MASK; - if (pte_exec(orig)) - vaddr |= 0x1UL; - - if (tlb_type != hypervisor && - pte_dirty(orig)) { - unsigned long paddr, pfn = pte_pfn(orig); - struct address_space *mapping; - struct page *page; - - if (!pfn_valid(pfn)) - goto no_cache_flush; - - page = pfn_to_page(pfn); - if (PageReserved(page)) - goto no_cache_flush; - - /* A real file page? */ - mapping = page_mapping(page); - if (!mapping) - goto no_cache_flush; - - paddr = (unsigned long) page_address(page); - if ((paddr ^ vaddr) & (1 << 13)) - flush_dcache_page_all(mm, page); - } - -no_cache_flush: - - if (mp->fullmm) - return; - - nr = mp->tlb_nr; - - if (unlikely(nr != 0 && mm != mp->mm)) { - flush_tlb_pending(); - nr = 0; - } - - if (nr == 0) - mp->mm = mm; - - mp->vaddrs[nr] = vaddr; - mp->tlb_nr = ++nr; - if (nr >= TLB_BATCH_NR) - flush_tlb_pending(); -} |