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-rw-r--r--include/asm-generic/tlb.h6
-rw-r--r--include/asm-x86_64/tlbflush.h4
2 files changed, 9 insertions, 1 deletions
diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h
index faff403e1061..7d0298347ee7 100644
--- a/include/asm-generic/tlb.h
+++ b/include/asm-generic/tlb.h
@@ -23,7 +23,11 @@
* and page free order so much..
*/
#ifdef CONFIG_SMP
- #define FREE_PTE_NR 506
+ #ifdef ARCH_FREE_PTR_NR
+ #define FREE_PTR_NR ARCH_FREE_PTR_NR
+ #else
+ #define FREE_PTE_NR 506
+ #endif
#define tlb_fast_mode(tlb) ((tlb)->nr == ~0U)
#else
#define FREE_PTE_NR 1
diff --git a/include/asm-x86_64/tlbflush.h b/include/asm-x86_64/tlbflush.h
index 505b0cf906de..4a9c20ea9b10 100644
--- a/include/asm-x86_64/tlbflush.h
+++ b/include/asm-x86_64/tlbflush.h
@@ -109,6 +109,10 @@ static inline void flush_tlb_range(struct vm_area_struct * vma, unsigned long st
#define TLBSTATE_OK 1
#define TLBSTATE_LAZY 2
+/* Roughly an IPI every 20MB with 4k pages for freeing page table
+ ranges. Cost is about 42k of memory for each CPU. */
+#define ARCH_FREE_PTE_NR 5350
+
#endif
#define flush_tlb_kernel_range(start, end) flush_tlb_all()