From a93a962669cdbe56bb0bcd88156f0f1598f31c88 Mon Sep 17 00:00:00 2001 From: Xie Yongji Date: Tue, 31 Aug 2021 18:36:22 +0800 Subject: iova: Export alloc_iova_fast() and free_iova_fast() Export alloc_iova_fast() and free_iova_fast() so that some modules can make use of the per-CPU cache to get rid of rbtree spinlock in alloc_iova() and free_iova() during IOVA allocation. Signed-off-by: Xie Yongji Acked-by: Jason Wang Acked-by: Will Deacon Link: https://lore.kernel.org/r/20210831103634.33-2-xieyongji@bytedance.com Signed-off-by: Michael S. Tsirkin --- drivers/iommu/iova.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/iommu/iova.c') diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c index b6cf5f16123b..3941ed6bb99b 100644 --- a/drivers/iommu/iova.c +++ b/drivers/iommu/iova.c @@ -521,6 +521,7 @@ retry: return new_iova->pfn_lo; } +EXPORT_SYMBOL_GPL(alloc_iova_fast); /** * free_iova_fast - free iova pfn range into rcache @@ -538,6 +539,7 @@ free_iova_fast(struct iova_domain *iovad, unsigned long pfn, unsigned long size) free_iova(iovad, pfn); } +EXPORT_SYMBOL_GPL(free_iova_fast); #define fq_ring_for_each(i, fq) \ for ((i) = (fq)->head; (i) != (fq)->tail; (i) = ((i) + 1) % IOVA_FQ_SIZE) -- cgit v1.2.3