4 #include <asm/pgalloc.h>
5 #include <asm/tlbflush.h>
6 #include <linux/vs_memory.h>
9 * TLB handling. This allows us to remove pages from the page
10 * tables, and efficiently handle the TLB issues.
18 unsigned int avoided_flushes;
21 extern struct mmu_gather mmu_gathers[NR_CPUS];
23 static inline struct mmu_gather *
24 tlb_gather_mmu(struct mm_struct *mm, unsigned int full_mm_flush)
26 int cpu = smp_processor_id();
27 struct mmu_gather *tlb = &mmu_gathers[cpu];
31 tlb->fullmm = full_mm_flush;
37 tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end)
39 struct mm_struct *mm = tlb->mm;
40 unsigned long freed = tlb->freed;
45 // mm->rss = rss - freed;
46 vx_rsspages_sub(mm, freed);
52 tlb->avoided_flushes++;
55 /* keep the page table cache within bounds */
60 static inline unsigned int
61 tlb_is_full_mm(struct mmu_gather *tlb)
66 #define tlb_remove_tlb_entry(tlb,ptep,address) do { } while (0)
67 //#define tlb_start_vma(tlb,vma) do { } while (0)
68 //FIXME - ARM32 uses this now that things changed in the kernel. seems like it may be pointless on arm26, however to get things compiling...
69 #define tlb_start_vma(tlb,vma) \
72 flush_cache_range(vma, vma->vm_start, vma->vm_end); \
74 #define tlb_end_vma(tlb,vma) do { } while (0)
76 #define tlb_remove_page(tlb,page) free_page_and_swap_cache(page)
77 #define pte_free_tlb(tlb,ptep) pte_free(ptep)
78 #define pmd_free_tlb(tlb,pmdp) pmd_free(pmdp)