Messages in this thread | | | From | John Garry <> | Subject | Re: [PATCH v11 01/12] iova: Export alloc_iova_fast() and free_iova_fast() | Date | Wed, 25 Aug 2021 11:39:22 +0100 |
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On 25/08/2021 10:55, Will Deacon wrote: > On Tue, Aug 24, 2021 at 02:08:33PM -0400, Michael S. Tsirkin wrote: >> 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@bytedance.com> >> >> >> This needs ack from iommu maintainers. Guys? > > Looks fine to me: > > Acked-by: Will Deacon <will@kernel.org> > > Will > _______________________________________________ > iommu mailing list > iommu@lists.linux-foundation.org > https://lists.linuxfoundation.org/mailman/listinfo/iommu > . >
JFYI, There was a preliminary discussion to move the iova rcache code (which the iova fast alloc and free functions are based on) out of the iova code and maybe into dma-iommu (being the only user). There was other motivation.
https://lore.kernel.org/linux-iommu/83de3911-145d-77c8-17c1-981e4ff825d3@arm.com/
Having more users complicates that...
Thanks, John
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