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-rw-r--r--include/asm-um/tlb.h127
1 files changed, 0 insertions, 127 deletions
diff --git a/include/asm-um/tlb.h b/include/asm-um/tlb.h
deleted file mode 100644
index 5240fa1c5e0..00000000000
--- a/include/asm-um/tlb.h
+++ /dev/null
@@ -1,127 +0,0 @@
-#ifndef __UM_TLB_H
-#define __UM_TLB_H
-
-#include <linux/pagemap.h>
-#include <linux/swap.h>
-#include <asm/percpu.h>
-#include <asm/pgalloc.h>
-#include <asm/tlbflush.h>
-
-#define tlb_start_vma(tlb, vma) do { } while (0)
-#define tlb_end_vma(tlb, vma) do { } while (0)
-#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
-
-/* struct mmu_gather is an opaque type used by the mm code for passing around
- * any data needed by arch specific code for tlb_remove_page.
- */
-struct mmu_gather {
- struct mm_struct *mm;
- unsigned int need_flush; /* Really unmapped some ptes? */
- unsigned long start;
- unsigned long end;
- unsigned int fullmm; /* non-zero means full mm flush */
-};
-
-/* Users of the generic TLB shootdown code must declare this storage space. */
-DECLARE_PER_CPU(struct mmu_gather, mmu_gathers);
-
-static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
- unsigned long address)
-{
- if (tlb->start > address)
- tlb->start = address;
- if (tlb->end < address + PAGE_SIZE)
- tlb->end = address + PAGE_SIZE;
-}
-
-static inline void init_tlb_gather(struct mmu_gather *tlb)
-{
- tlb->need_flush = 0;
-
- tlb->start = TASK_SIZE;
- tlb->end = 0;
-
- if (tlb->fullmm) {
- tlb->start = 0;
- tlb->end = TASK_SIZE;
- }
-}
-
-/* tlb_gather_mmu
- * Return a pointer to an initialized struct mmu_gather.
- */
-static inline struct mmu_gather *
-tlb_gather_mmu(struct mm_struct *mm, unsigned int full_mm_flush)
-{
- struct mmu_gather *tlb = &get_cpu_var(mmu_gathers);
-
- tlb->mm = mm;
- tlb->fullmm = full_mm_flush;
-
- init_tlb_gather(tlb);
-
- return tlb;
-}
-
-extern void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
- unsigned long end);
-
-static inline void
-tlb_flush_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end)
-{
- if (!tlb->need_flush)
- return;
-
- flush_tlb_mm_range(tlb->mm, tlb->start, tlb->end);
- init_tlb_gather(tlb);
-}
-
-/* tlb_finish_mmu
- * Called at the end of the shootdown operation to free up any resources
- * that were required.
- */
-static inline void
-tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end)
-{
- tlb_flush_mmu(tlb, start, end);
-
- /* keep the page table cache within bounds */
- check_pgt_cache();
-
- put_cpu_var(mmu_gathers);
-}
-
-/* tlb_remove_page
- * Must perform the equivalent to __free_pte(pte_get_and_clear(ptep)),
- * while handling the additional races in SMP caused by other CPUs
- * caching valid mappings in their TLBs.
- */
-static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page)
-{
- tlb->need_flush = 1;
- free_page_and_swap_cache(page);
- return;
-}
-
-/**
- * tlb_remove_tlb_entry - remember a pte unmapping for later tlb invalidation.
- *
- * Record the fact that pte's were really umapped in ->need_flush, so we can
- * later optimise away the tlb invalidate. This helps when userspace is
- * unmapping already-unmapped pages, which happens quite a lot.
- */
-#define tlb_remove_tlb_entry(tlb, ptep, address) \
- do { \
- tlb->need_flush = 1; \
- __tlb_remove_tlb_entry(tlb, ptep, address); \
- } while (0)
-
-#define pte_free_tlb(tlb, ptep) __pte_free_tlb(tlb, ptep)
-
-#define pud_free_tlb(tlb, pudp) __pud_free_tlb(tlb, pudp)
-
-#define pmd_free_tlb(tlb, pmdp) __pmd_free_tlb(tlb, pmdp)
-
-#define tlb_migrate_finish(mm) do {} while (0)
-
-#endif