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| author | Mike Marciniszyn <mike.marciniszyn@qlogic.com> | 2011-01-10 17:42:22 -0800 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2011-01-10 17:42:22 -0800 |
| commit | 2a600f14d25fda341b5633c75cc50a7574fc1007 (patch) | |
| tree | 02d0af0c74dc1e7ef99d2798d4b5e0a375b4deb8 /Documentation/gpio.txt | |
| parent | 7c3edd3ff3098093e594dbcbc9dbeeae09b1b4a0 (diff) | |
IB/qib: RDMA lkey/rkey validation is inefficient for large MRs
The current code loops during rkey/lkey validiation to isolate the MR
for the RDMA, which is expensive when the current operation is inside
a very large memory region.
This fix optimizes rkey/lkey validation routines for user memory
regions and fast memory regions. The MR entry can be isolated by
shifts/mods instead of looping. The existing loop is preserved for
phys memory regions for now.
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'Documentation/gpio.txt')
0 files changed, 0 insertions, 0 deletions