[PATCH 4/4] arm64: tlb: set huge page size to stride for hugepage

[Kefeng Wang]

It is better to use huge_page_size() for hugepage(HugeTLB) instead of
PAGE_SIZE for stride, which has been done in flush_pmd/pud_tlb_range(),
it could reduce the loop in __flush_tlb_range().

Signed-off-by: Kefeng Wang <wangkefeng.wang at huawei.com>
---
 arch/arm64/include/asm/tlbflush.h | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
index 412a3b9a3c25..25e35e6f8093 100644
--- a/arch/arm64/include/asm/tlbflush.h
+++ b/arch/arm64/include/asm/tlbflush.h
@@ -360,16 +360,17 @@ static inline void __flush_tlb_range(struct vm_area_struct *vma,
 	dsb(ish);
 }
 
-static inline void flush_tlb_range(struct vm_area_struct *vma,
-				   unsigned long start, unsigned long end)
-{
-	/*
-	 * We cannot use leaf-only invalidation here, since we may be invalidating
-	 * table entries as part of collapsing hugepages or moving page tables.
-	 * Set the tlb_level to 0 because we can not get enough information here.
-	 */
-	__flush_tlb_range(vma, start, end, PAGE_SIZE, false, 0);
-}
+/*
+ * We cannot use leaf-only invalidation here, since we may be invalidating
+ * table entries as part of collapsing hugepages or moving page tables.
+ * Set the tlb_level to 0 because we can not get enough information here.
+ */
+#define flush_tlb_range(vma, start, end)				\
+	__flush_tlb_range(vma, start, end,				\
+				((vma)->vm_flags & VM_HUGETLB)		\
+				? huge_page_size(hstate_vma(vma))	\
+				: PAGE_SIZE, false, 0)
+
 
 static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end)
 {
-- 
2.41.0