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Diffstat (limited to 'arch/sparc64/mm/hugetlbpage.c')
-rw-r--r--arch/sparc64/mm/hugetlbpage.c163
1 files changed, 0 insertions, 163 deletions
diff --git a/arch/sparc64/mm/hugetlbpage.c b/arch/sparc64/mm/hugetlbpage.c
deleted file mode 100644
index 625cbb336a2..00000000000
--- a/arch/sparc64/mm/hugetlbpage.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
- * SPARC64 Huge TLB page support.
- *
- * Copyright (C) 2002, 2003 David S. Miller (davem@redhat.com)
- */
-
-#include <linux/config.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/hugetlb.h>
-#include <linux/pagemap.h>
-#include <linux/smp_lock.h>
-#include <linux/slab.h>
-#include <linux/sysctl.h>
-
-#include <asm/mman.h>
-#include <asm/pgalloc.h>
-#include <asm/tlb.h>
-#include <asm/tlbflush.h>
-#include <asm/cacheflush.h>
-#include <asm/mmu_context.h>
-
-pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte = NULL;
-
- pgd = pgd_offset(mm, addr);
- if (pgd) {
- pud = pud_offset(pgd, addr);
- if (pud) {
- pmd = pmd_alloc(mm, pud, addr);
- if (pmd)
- pte = pte_alloc_map(mm, pmd, addr);
- }
- }
- return pte;
-}
-
-pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte = NULL;
-
- pgd = pgd_offset(mm, addr);
- if (pgd) {
- pud = pud_offset(pgd, addr);
- if (pud) {
- pmd = pmd_offset(pud, addr);
- if (pmd)
- pte = pte_offset_map(pmd, addr);
- }
- }
- return pte;
-}
-
-#define mk_pte_huge(entry) do { pte_val(entry) |= _PAGE_SZHUGE; } while (0)
-
-void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep, pte_t entry)
-{
- int i;
-
- for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
- set_pte_at(mm, addr, ptep, entry);
- ptep++;
- addr += PAGE_SIZE;
- pte_val(entry) += PAGE_SIZE;
- }
-}
-
-pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep)
-{
- pte_t entry;
- int i;
-
- entry = *ptep;
-
- for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
- pte_clear(mm, addr, ptep);
- addr += PAGE_SIZE;
- ptep++;
- }
-
- return entry;
-}
-
-/*
- * This function checks for proper alignment of input addr and len parameters.
- */
-int is_aligned_hugepage_range(unsigned long addr, unsigned long len)
-{
- if (len & ~HPAGE_MASK)
- return -EINVAL;
- if (addr & ~HPAGE_MASK)
- return -EINVAL;
- return 0;
-}
-
-struct page *follow_huge_addr(struct mm_struct *mm,
- unsigned long address, int write)
-{
- return ERR_PTR(-EINVAL);
-}
-
-int pmd_huge(pmd_t pmd)
-{
- return 0;
-}
-
-struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address,
- pmd_t *pmd, int write)
-{
- return NULL;
-}
-
-static void context_reload(void *__data)
-{
- struct mm_struct *mm = __data;
-
- if (mm == current->mm)
- load_secondary_context(mm);
-}
-
-void hugetlb_prefault_arch_hook(struct mm_struct *mm)
-{
- /* On UltraSPARC-III+ and later, configure the second half of
- * the Data-TLB for huge pages.
- */
- if (tlb_type == cheetah_plus) {
- unsigned long ctx;
-
- spin_lock(&ctx_alloc_lock);
- ctx = mm->context.sparc64_ctx_val;
- ctx &= ~CTX_PGSZ_MASK;
- ctx |= CTX_PGSZ_BASE << CTX_PGSZ0_SHIFT;
- ctx |= CTX_PGSZ_HUGE << CTX_PGSZ1_SHIFT;
-
- if (ctx != mm->context.sparc64_ctx_val) {
- /* When changing the page size fields, we
- * must perform a context flush so that no
- * stale entries match. This flush must
- * occur with the original context register
- * settings.
- */
- do_flush_tlb_mm(mm);
-
- /* Reload the context register of all processors
- * also executing in this address space.
- */
- mm->context.sparc64_ctx_val = ctx;
- on_each_cpu(context_reload, mm, 0, 0);
- }
- spin_unlock(&ctx_alloc_lock);
- }
-}