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| author | Michael Guralnik <michaelgur@mellanox.com> | 2020-01-08 21:05:38 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2020-01-16 22:55:46 +0300 |
| commit | 2233c6609c11146ed1a26eec2e4335131077a608 (patch) | |
| tree | b0a5ada6488e1dd8dccb74626b400c54d5306c06 /include/uapi/rdma | |
| parent | 86dd738cf20cee4ac316274743e5707c4ccb6039 (diff) | |
| download | linux-2233c6609c11146ed1a26eec2e4335131077a608.tar.xz | |
RDMA/uverbs: Add new relaxed ordering memory region access flag
Add a new relaxed ordering access flag for memory regions. Using memory
regions with relaxed ordeing set can enhance performance.
This access flag is handled in a best-effort manner, drivers should ignore
if they don't support setting relaxed ordering.
Link: https://lore.kernel.org/r/1578506740-22188-9-git-send-email-yishaih@mellanox.com
Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'include/uapi/rdma')
| -rw-r--r-- | include/uapi/rdma/ib_user_ioctl_verbs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/rdma/ib_user_ioctl_verbs.h b/include/uapi/rdma/ib_user_ioctl_verbs.h index 76dbbd9b55fc..2a165f40ee38 100644 --- a/include/uapi/rdma/ib_user_ioctl_verbs.h +++ b/include/uapi/rdma/ib_user_ioctl_verbs.h @@ -54,6 +54,7 @@ enum ib_uverbs_access_flags { IB_UVERBS_ACCESS_ON_DEMAND = 1 << 6, IB_UVERBS_ACCESS_HUGETLB = 1 << 7, + IB_UVERBS_ACCESS_RELAXED_ORDERING = IB_UVERBS_ACCESS_OPTIONAL_FIRST, IB_UVERBS_ACCESS_OPTIONAL_RANGE = ((IB_UVERBS_ACCESS_OPTIONAL_LAST << 1) - 1) & ~(IB_UVERBS_ACCESS_OPTIONAL_FIRST - 1) |