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-rw-r--r--include/asm-arm26/tlb.h47
1 files changed, 16 insertions, 31 deletions
diff --git a/include/asm-arm26/tlb.h b/include/asm-arm26/tlb.h
index 1316352a58f3..08ddd85b8d35 100644
--- a/include/asm-arm26/tlb.h
+++ b/include/asm-arm26/tlb.h
@@ -10,24 +10,20 @@
*/
struct mmu_gather {
struct mm_struct *mm;
- unsigned int freed;
- unsigned int fullmm;
-
- unsigned int flushes;
- unsigned int avoided_flushes;
+ unsigned int need_flush;
+ unsigned int fullmm;
};
-extern struct mmu_gather mmu_gathers[NR_CPUS];
+DECLARE_PER_CPU(struct mmu_gather, mmu_gathers);
static inline struct mmu_gather *
tlb_gather_mmu(struct mm_struct *mm, unsigned int full_mm_flush)
{
- int cpu = smp_processor_id();
- struct mmu_gather *tlb = &mmu_gathers[cpu];
+ struct mmu_gather *tlb = &get_cpu_var(mmu_gathers);
tlb->mm = mm;
- tlb->freed = 0;
- tlb->fullmm = full_mm_flush;
+ tlb->need_flush = 0;
+ tlb->fullmm = full_mm_flush;
return tlb;
}
@@ -35,30 +31,13 @@ tlb_gather_mmu(struct mm_struct *mm, unsigned int full_mm_flush)
static inline void
tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end)
{
- struct mm_struct *mm = tlb->mm;
- unsigned long freed = tlb->freed;
- int rss = get_mm_counter(mm, rss);
-
- if (rss < freed)
- freed = rss;
- add_mm_counter(mm, rss, -freed);
-
- if (freed) {
- flush_tlb_mm(mm);
- tlb->flushes++;
- } else {
- tlb->avoided_flushes++;
- }
+ if (tlb->need_flush)
+ flush_tlb_mm(tlb->mm);
/* keep the page table cache within bounds */
check_pgt_cache();
-}
-
-static inline unsigned int
-tlb_is_full_mm(struct mmu_gather *tlb)
-{
- return tlb->fullmm;
+ put_cpu_var(mmu_gathers);
}
#define tlb_remove_tlb_entry(tlb,ptep,address) do { } while (0)
@@ -71,7 +50,13 @@ tlb_is_full_mm(struct mmu_gather *tlb)
} while (0)
#define tlb_end_vma(tlb,vma) do { } while (0)
-#define tlb_remove_page(tlb,page) free_page_and_swap_cache(page)
+static inline void
+tlb_remove_page(struct mmu_gather *tlb, struct page *page)
+{
+ tlb->need_flush = 1;
+ free_page_and_swap_cache(page);
+}
+
#define pte_free_tlb(tlb,ptep) pte_free(ptep)
#define pmd_free_tlb(tlb,pmdp) pmd_free(pmdp)
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