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 <xieyongji@xxxxxxxxxxxxx> This needs ack from iommu maintainers. Guys? > --- > 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
