[PATCH 06/17] arm: mmu_gather rework

[Peter Zijlstra]

Fix up the arm mmu_gather code to conform to the new API.

Cc: Russell King <rmk@xxxxxxxxxxxxxxxx>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
---
 arch/arm/include/asm/tlb.h |   29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)

Index: linux-2.6/arch/arm/include/asm/tlb.h
===================================================================
--- linux-2.6.orig/arch/arm/include/asm/tlb.h
+++ linux-2.6/arch/arm/include/asm/tlb.h
@@ -40,17 +40,11 @@ struct mmu_gather {
 	unsigned long		range_end;
 };
 
-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)
+static inline void
+tlb_gather_mmu(struct mmu_gather *tlb, 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;
-
-	return tlb;
 }
 
 static inline void
@@ -61,8 +55,6 @@ tlb_finish_mmu(struct mmu_gather *tlb, u
 
 	/* keep the page table cache within bounds */
 	check_pgt_cache();
-
-	put_cpu_var(mmu_gathers);
 }
 
 /*
@@ -101,7 +93,22 @@ tlb_end_vma(struct mmu_gather *tlb, stru
 		flush_tlb_range(vma, tlb->range_start, tlb->range_end);
 }
 
-#define tlb_remove_page(tlb,page)	free_page_and_swap_cache(page)
+static inline int __tlb_remove_page(struct mmu_gather *tlb, struct page *page)
+{
+	free_page_and_swap_cache(page);
+	return 0;
+}
+
+static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page)
+{
+	might_sleep();
+	__tlb_remove_page(tlb, page);
+}
+
+static inline void tlb_flush_mmu(struct mmu_gather *tlb)
+{
+}
+
 #define pte_free_tlb(tlb, ptep, addr)	pte_free((tlb)->mm, ptep)
 #define pmd_free_tlb(tlb, pmdp, addr)	pmd_free((tlb)->mm, pmdp)
 


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