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| author | Michael Guralnik <michaelgur@mellanox.com> | 2020-01-08 19:05:38 +0100 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2020-01-16 20:55:46 +0100 |
| commit | 2233c6609c11146ed1a26eec2e4335131077a608 (patch) | |
| tree | b0a5ada6488e1dd8dccb74626b400c54d5306c06 | |
| parent | RDMA/efa: Allow passing of optional access flags for MR registration (diff) | |
| download | linux-2233c6609c11146ed1a26eec2e4335131077a608.tar.xz linux-2233c6609c11146ed1a26eec2e4335131077a608.zip | |
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>
| -rw-r--r-- | include/rdma/ib_verbs.h | 1 | ||||
| -rw-r--r-- | include/uapi/rdma/ib_user_ioctl_verbs.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index ed6cf11612b3..6506df9f31ae 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -1418,6 +1418,7 @@ enum ib_access_flags { IB_ZERO_BASED = IB_UVERBS_ACCESS_ZERO_BASED, IB_ACCESS_ON_DEMAND = IB_UVERBS_ACCESS_ON_DEMAND, IB_ACCESS_HUGETLB = IB_UVERBS_ACCESS_HUGETLB, + IB_ACCESS_RELAXED_ORDERING = IB_UVERBS_ACCESS_RELAXED_ORDERING, IB_ACCESS_OPTIONAL = IB_UVERBS_ACCESS_OPTIONAL_RANGE, IB_ACCESS_SUPPORTED = 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) |