Re: [PATCH v11 01/12] iova: Export alloc_iova_fast() and free_iova_fast()
From: "Michael S. Tsirkin" <mst@redhat.com>
Date: 2021-08-24 18:08:43
Also in:
kvm, linux-fsdevel, linux-iommu, lkml, virtualization
On Wed, Aug 18, 2021 at 08:06:31PM +0800, Xie Yongji wrote:
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 <redacted>
This needs ack from iommu maintainers. Guys?
quoted hunk ↗ jump to hunk
--- drivers/iommu/iova.c | 2 ++ 1 file changed, 2 insertions(+)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 @@ alloc_iova_fast(struct iova_domain *iovad, unsigned long size, 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)-- 2.11.0