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| author | Ralph Campbell <ralph.campbell@qlogic.com> | 2007-07-06 12:48:23 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2007-07-09 20:12:26 -0700 |
| commit | 4fc570bcbe77f823aae183dd824869f79e74cc97 (patch) | |
| tree | 3955946608a973b06db8b7e5b3ec319354a6fa73 /drivers/infiniband/hw/ipath/ipath_iba6110.c | |
| parent | 06cc85086e6896939f8c68f8518224748f6b0b2f (diff) | |
| download | lwn-4fc570bcbe77f823aae183dd824869f79e74cc97.tar.gz lwn-4fc570bcbe77f823aae183dd824869f79e74cc97.zip | |
IB/ipath: Add barrier before updating WC head in shared memory
Add a barrier to make sure the CPU doesn't reorder writes to memory,
since user programs can be polling on the head index update and the
entry should be written before that.
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_iba6110.c')
0 files changed, 0 insertions, 0 deletions