Re: [PATCH v11 01/12] iova: Export alloc_iova_fast() and free_iova_fast()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 25/08/2021 13:17, Yongji Xie wrote:
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.

Would it be better to move the code into ./lib as a general library?

For a start we/I think that the rcache could be removed from the IOVA code, but prob should stay in drivers/iommu. I had another IOVA issue to solve, which complicates things. No solid plans. Need to talk to Robin more.


https://lore.kernel.org/linux-iommu/83de3911-145d-77c8-17c1-981e4ff825d3@xxxxxxx/

Having more users complicates that...

Do we have some plan for this work? From our test [1],
iova_alloc_fast() is much better than iova_alloc(). So I'd like to use
it as much as possible

[1]https://lore.kernel.org/kvm/CACycT3steXFeg7NRbWpo2J59dpYcumzcvM2zcPJAVe40-EvvEg@xxxxxxxxxxxxxx/

Well if you're alloc'ing and free'ing IOVAs a lot then I can imagine it is.

Thanks,
John



[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]

  Powered by Linux