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| author | Xie Yongji <xieyongji@bytedance.com> | 2021-08-31 18:36:22 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2021-09-06 07:20:56 -0400 |
| commit | a93a962669cdbe56bb0bcd88156f0f1598f31c88 (patch) | |
| tree | 5779bd356d7e499a76d8e137eb7233bb93f0c479 /drivers/iommu | |
| parent | 6105d1fe6f4c24ce8c13e2e6568b16b76e04983d (diff) | |
| download | linux-a93a962669cdbe56bb0bcd88156f0f1598f31c88.tar.bz2 | |
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 <xieyongji@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20210831103634.33-2-xieyongji@bytedance.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/iova.c | 2 |
1 files changed, 2 insertions, 0 deletions
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) |