[PATCH 13/20] um: Preemptible mmu_gather

Peter Zijlstra
2010-08-28T14:28:10Z

[-- Attachment #1: mm-preempt-tlb-gather-um.patch --]
[-- Type: text/plain, Size: 1576 bytes --]

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

Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
---
arch/um/include/asm/tlb.h | 16 ++--------------
1 file changed, 2 insertions(+), 14 deletions(-)

Index: linux-2.6/arch/um/include/asm/tlb.h
===================================================================
--- linux-2.6.orig/arch/um/include/asm/tlb.h
+++ linux-2.6/arch/um/include/asm/tlb.h
@@ -22,9 +22,6 @@ struct mmu_gather {
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)
{
@@ -47,20 +44,13 @@ static inline void init_tlb_gather(struc
}
}

-/* 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)
+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;

init_tlb_gather(tlb);
-
- return tlb;
}

extern void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
@@ -87,8 +77,6 @@ tlb_finish_mmu(struct mmu_gather *tlb, u

/* keep the page table cache within bounds */
check_pgt_cache();
-
- put_cpu_var(mmu_gathers);
}

/* tlb_remove_page