4 #include <linux/config.h>
5 #include <linux/swap.h>
6 #include <asm/pgalloc.h>
7 #include <asm/tlbflush.h>
8 #include <asm/mmu_context.h>
10 #define TLB_BATCH_NR 192
13 * For UP we don't need to worry about TLB flush
14 * and page free order so much..
17 #define FREE_PTE_NR 506
18 #define tlb_fast_mode(bp) ((bp)->pages_nr == ~0U)
21 #define tlb_fast_mode(bp) 1
26 unsigned int pages_nr;
27 unsigned int need_flush;
28 unsigned int tlb_frozen;
31 unsigned long vaddrs[TLB_BATCH_NR];
32 struct page *pages[FREE_PTE_NR];
35 DECLARE_PER_CPU(struct mmu_gather, mmu_gathers);
38 extern void smp_flush_tlb_pending(struct mm_struct *,
39 unsigned long, unsigned long *);
42 extern void __flush_tlb_pending(unsigned long, unsigned long, unsigned long *);
43 extern void flush_tlb_pending(void);
45 static inline struct mmu_gather *tlb_gather_mmu(struct mm_struct *mm, unsigned int full_mm_flush)
47 struct mmu_gather *mp = &__get_cpu_var(mmu_gathers);
52 mp->pages_nr = num_online_cpus() > 1 ? 0U : ~0U;
53 mp->tlb_frozen = full_mm_flush;
60 static inline void tlb_flush_mmu(struct mmu_gather *mp)
64 if (!tlb_fast_mode(mp)) {
65 free_pages_and_swap_cache(mp->pages, mp->pages_nr);
73 extern void smp_flush_tlb_mm(struct mm_struct *mm);
74 #define do_flush_tlb_mm(mm) smp_flush_tlb_mm(mm)
76 #define do_flush_tlb_mm(mm) __flush_tlb_mm(CTX_HWBITS(mm->context), SECONDARY_CONTEXT)
79 static inline void tlb_finish_mmu(struct mmu_gather *mp, unsigned long start, unsigned long end)
81 unsigned long freed = mp->freed;
82 struct mm_struct *mm = mp->mm;
83 unsigned long rss = get_mm_counter(mm, rss);
87 add_mm_counter(mm, rss, -freed);
92 if (CTX_VALID(mm->context))
98 /* keep the page table cache within bounds */
102 static inline unsigned int tlb_is_full_mm(struct mmu_gather *mp)
104 return mp->tlb_frozen;
107 static inline void tlb_remove_page(struct mmu_gather *mp, struct page *page)
110 if (tlb_fast_mode(mp)) {
111 free_page_and_swap_cache(page);
114 mp->pages[mp->pages_nr++] = page;
115 if (mp->pages_nr >= FREE_PTE_NR)
119 #define tlb_remove_tlb_entry(mp,ptep,addr) do { } while (0)
120 #define pte_free_tlb(mp,ptepage) pte_free(ptepage)
121 #define pmd_free_tlb(mp,pmdp) pmd_free(pmdp)
122 #define pud_free_tlb(tlb,pudp) __pud_free_tlb(tlb,pudp)
124 #define tlb_migrate_finish(mm) do { } while (0)
125 #define tlb_start_vma(tlb, vma) do { } while (0)
126 #define tlb_end_vma(tlb, vma) do { } while (0)
128 #endif /* _SPARC64_TLB_H */